{"id":238,"date":"2026-05-31T23:00:18","date_gmt":"2026-05-31T15:00:18","guid":{"rendered":"http:\/\/sonetto.online\/?p=238"},"modified":"2026-05-31T23:00:19","modified_gmt":"2026-05-31T15:00:19","slug":"%e6%95%b0%e6%8d%ae%e5%ba%93%e7%b3%bb%e7%bb%9f%e5%b7%a5%e7%a8%8b%e5%b8%88%e5%ad%a6%e4%b9%a0","status":"publish","type":"post","link":"https:\/\/sonetto.online\/index.php\/2026\/05\/31\/%e6%95%b0%e6%8d%ae%e5%ba%93%e7%b3%bb%e7%bb%9f%e5%b7%a5%e7%a8%8b%e5%b8%88%e5%ad%a6%e4%b9%a0\/","title":{"rendered":"\u6570\u636e\u5e93\u7cfb\u7edf\u5de5\u7a0b\u5e08\u5b66\u4e60"},"content":{"rendered":"

\u89c6\u9891\u5185\u5bb9<\/h1>\n

1.\u8f93\u5165\u8f93\u51fa\u63a7\u5236\u65b9\u5f0f<\/h2>\n

\u76f4\u63a5\u7a0b\u5e8f\u63a7\u5236<\/p>\n

\"Pasted<\/div><\/figure>\n

\u4e2d\u65ad\u9a71\u52a8\u65b9\u5f0f<\/p>\n

\"Pasted<\/div><\/figure>\n

\u76f4\u63a5\u5b58\u50a8\u5668\u5b58\u50a8\u65b9\u5f0f<\/p>\n

\"Pasted<\/div><\/figure>\n

\u603b\u7ed3<\/p>\n

\"Pasted<\/div><\/figure>\n

\u603b\u7684\u6765\u8bf4\u5c31\u662f
\n\u7a0b\u5e8f\u67e5\u8be2\u65b9\u5f0f\u4f1a\u4e00\u76f4\u5360\u7528CPU\uff0c\u4e00\u76f4\u8ba9CPU\u68c0\u6d4b\u5f53\u524d\u8f93\u5165\u8f93\u51fa\u8bbe\u5907\u7684\u72b6\u6001\u4ece\u800c\u63a7\u5236\u8f93\u5165\u8f93\u51fa\u64cd\u4f5c\uff0c\u4f1a\u4e00\u76f4\u5360\u7528CPU\u4ece\u800c\u6d6a\u8d39CPU\u7684\u65f6\u95f4\uff0c\u53ea\u80fd\u5b9e\u73b0\u4e32\u884c\u64cd\u4f5c
\n\u800c\u4e2d\u65ad\u9a71\u52a8\u65b9\u5f0f\u5219\u662f\u5728\u8f93\u5165\u8f93\u51fa\u64cd\u4f5c\u5b8c\u6210\u4e4b\u540e\uff0c\u8bbe\u5907\u4f1a\u53d1\u9001\u4e00\u4e2a\u4e2d\u65ad\u6307\u4ee4\u7ed9CPU\uff0c\u800cCPU\u5c31\u53ef\u4ee5\u4e0e\u8bbe\u5907\u8fdb\u884c\u5e76\u884c\u64cd\u4f5c\uff0c\u5e76\u884c\u64cd\u4f5c
\n\u6700\u540e\u5c31\u662fDMA\u65b9\u5f0f\uff0c\u80fd\u66ff\u4ee3CPU\u53bb\u5b8c\u6210\u6570\u636e\u4f20\u8f93\uff0c\u5927\u5927\u51cf\u5c11\u4e86\u4e2d\u65ad\u6b21\u6570\uff0c\u80fd\u591f\u8ba9CPU\u6709\u66f4\u591a\u8d44\u6e90\u548c\u65f6\u95f4\u53bb\u6267\u884c\u5176\u4ed6\u4efb\u52a1\uff0c\u5e76\u884c\u64cd\u4f5c<\/p>\n

2.\u64cd\u4f5c\u7cfb\u7edf\u6982\u8ff0<\/h2>\n

\u57fa\u672c\u6982\u5ff5<\/h3>\n
\"Pasted<\/div><\/figure>\n

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\n\u5305\u62ec\u8fdb\u7a0b\u7ba1\u7406\uff0c\u5b58\u50a8\u7ba1\u7406\uff0c\u6587\u4ef6\u7ba1\u7406\uff0c\u8bbe\u5907\u7ba1\u7406\uff0c\u4f5c\u4e1a\u7ba1\u7406\u7b49\u529f\u80fd<\/p>\n

\u8fdb\u7a0b\u7ba1\u74061<\/h3>\n
\"Pasted<\/div><\/figure>\n

\u8fdb\u7a0b\u662f\u7a0b\u5e8f\u5728\u6570\u636e\u96c6\u5408\u4e0a\u8fd0\u884c\u7684\u8fc7\u7a0b\uff0c
\n\u662f\u7cfb\u7edf\u8fdb\u884c\u3010\u8d44\u6e90\u5206\u914d\u3011\u7684\u57fa\u672c\u5355\u4f4d\uff0c
\n\u7531\u7a0b\u5e8f\u5757\u3001PCB\u3001\u6570\u636e\u5757\u4e09\u90e8\u5206\u7ec4\u6210\u3002<\/p>\n

\u7ebf\u7a0b\u662f\u3010\u8c03\u5ea6\u3011\u7684\u57fa\u672c\u5355\u4f4d\uff0c\u4f9d\u9644\u4e8e\u8fdb\u7a0b\u5b58\u5728\u3002
\n\u8fdb\u7a0b\u95f4\u76f8\u4e92\u72ec\u7acb\uff0c\u8fdb\u7a0b\u5185\u53ef\u591a\u7ebf\u7a0b\u5e76\u53d1\u3002
\n\u540c\u4e00\u8fdb\u7a0b\u5185\u7684\u7ebf\u7a0b\u5171\u4eab\u8fdb\u7a0b\u8d44\u6e90\uff08\u5982\u5185\u5b58\u3001\u6587\u4ef6\uff09\uff0c
\n\u4f46\u6bcf\u4e2a\u7ebf\u7a0b\u6709\u81ea\u5df1\u79c1\u6709\u7684\u6570\u636e\uff08\u5982\u6808\u3001\u5bc4\u5b58\u5668\uff09\uff0c\u7ebf\u7a0b\u95f4\u79c1\u6709\u6570\u636e\u4e0d\u5171\u4eab\u3002<\/p>\n

\"Pasted<\/div><\/figure>\n

\u56fe\u4e2d\u662f\u57fa\u672c\u7684\u4e09\u6001\u6a21\u578b\uff0c\u5206\u522b\u4e3a\u7b49\u5f85\uff0c\u5c31\u7eea\u548c\u8fd0\u884c
\n\u9700\u8981\u8bb0\u4f4f\u5c31\u662f
\n\u8fd0\u884c\u72b6\u6001\u662f\u6709CPU\u548c\u6709\u8d44\u6e90
\n\u5c31\u7eea\uff1a\u53ea\u7f3aCPU<\/strong> \u7b49\u5f85
\n\u7b49\u5f85\uff1a\u7f3a\u5176\u4ed6\u8d44\u6e90<\/strong>\uff0cCPU\u90fd\u4e0d\u7ed9<\/p>\n

\"Pasted<\/div><\/figure>\n

\u63a5\u4e0b\u6765\u662f\u4e94\u6001\u6a21\u578b
\n\u5176\u4e2d\u8fd0\u884c\uff0c\u6d3b\u8dc3\u5c31\u7eea\uff0c\u6d3b\u8dc3\u963b\u585e\u5206\u522b\u5bf9\u5e94\u6211\u4eec\u4e0a\u9762\u4e09\u6001\u6a21\u578b\u4e2d\u7684\u8fd0\u884c\uff0c\u5c31\u7eea\u548c\u7b49\u5f85
\n\u7136\u540e\u8fd9\u91cc\u7684\u6302\u8d77\u52a8\u4f5c\u5c31\u7c7b\u4f3c\u4e8e\u6682\u505c
\n\u9759\u6b62\u5c31\u7eea\u7531\u6d3b\u8dc3\u5c31\u7eea\u548c\u8fd0\u884c\u7684\u6302\u8d77\u52a8\u4f5c\u89e6\u53d1\uff0c\u540c\u65f6\u4e5f\u53ef\u4ee5\u7531\u9759\u6b62\u963b\u585e\u83b7\u53d6\u5176\u4ed6\u8d44\u6e90\u89e6\u53d1
\n\u800c\u9759\u6b62\u963b\u585e\u5219\u7531\u6d3b\u8dc3\u963b\u585e\u6302\u8d77\u89e6\u53d1
\n\u4fe9\u8005\u7686\u53ef\u901a\u8fc7\u6062\u590d\u6216\u6fc0\u6d3b\u518d\u6b21\u56de\u5230\u5bf9\u5e94\u7684\u6d3b\u8dc3\u72b6\u6001<\/p>\n

\"Pasted<\/div><\/figure>\n

\u524d\u9a71\u56fe\u7684\u8bdd\uff0c\u5176\u5b9e\u6ca1\u592a\u591a\u8bf4\u7684
\n\u5c31\u662f\u5f15\u5165\u4e86\u51fa\u5ea6\u5165\u5ea6\u7684\u6982\u5ff5\uff0c\u6bd4\u5982\u56fe\u4e2dA\u6709\u4e00\u4e2a\u7bad\u5934\u6307\u5411D\u90a3\u5c31\u662f\u51fa\u5ea6\u4e3a1\uff0cD\u88ab\u4e09\u4e2a\u7bad\u5934\u63d2\u4e86\u90a3\u5c31\u662f\u5165\u5ea6\u4e3a3
\n\u5de6\u8fb9 = \u4e32\u884c\u6267\u884c\uff08A\u2192B\u2192C\u2192D\u2192E \u4e00\u4e2a\u63a5\u4e00\u4e2a\uff09
\n\u53f3\u8fb9 = \u5e76\u53d1\u6267\u884c\uff08ABC \u540c\u65f6\u8dd1\uff0c\u6548\u7387\u66f4\u9ad8\uff09
\n\u540c\u65f6\uff0c\u6b64\u65f6\u7684D\u4e8b\u4ef6\u9700\u8981ABC\u5168\u90e8\u5b8c\u6210\u624d\u80fd\u89e6\u53d1
\n\u5c31\u8fd9\u4e48\u591a\u4e86<\/p>\n

\"Pasted<\/div><\/figure>\n

\u4e92\u65a5\uff1a\u95f4\u63a5\u5236\u7ea6
\n\u8fdb\u7a0b\u95f4\u7ade\u4e89\u540c\u4e00\u8d44\u6e90\uff0c\u540c\u4e00\u65f6\u95f4\u53ea\u80fd\u6709\u4e00\u4e2a\u8fdb\u7a0b\u4f7f\u7528
\n\u4f8b\uff1a\u72ec\u6728\u6865\uff0c\u540c\u65f6\u53ea\u80fd\u8fc7\u4e00\u4e2a\u4eba<\/p>\n

\u540c\u6b65\uff1a\u76f4\u63a5\u5236\u7ea6
\n\u8fdb\u7a0b\u95f4\u5b58\u5728\u4f9d\u8d56\u5173\u7cfb\uff0c\u4e00\u4e2a\u8fdb\u7a0b\u5fc5\u987b\u7b49\u53e6\u4e00\u4e2a\u8fdb\u7a0b
\n\u5b8c\u6210\u67d0\u4e2a\u64cd\u4f5c\u540e\u624d\u80fd\u7ee7\u7eed\u6267\u884c
\n\u4f8b\uff1a\u5f20\u4e09\u6b65\u884c\u3001\u674e\u56db\u9a91\u8f66\uff0c\u674e\u56db\u5230\u4e86\u4e5f\u8981\u7b49\u5f20\u4e09<\/p>\n

\u518d\u8865\u5145\u4e00\u4e2a\u6982\u5ff5\u5427
\n– \u5e76\u53d1<\/strong>\uff08\u5355\u6838CPU\uff09= \u8fdb\u7a0b\u4eec\u4ea4\u66ff\u6267\u884c<\/strong>\uff0c\u5b8f\u89c2\u4e0a\u770b\u8d77\u6765\u540c\u65f6\uff0c\u5fae\u89c2\u4e0a\u5176\u5b9e\u5728\u8f6e\u6d41\u62a2CPU
\n– \u5e76\u884c<\/strong>\uff08\u591a\u6838CPU\uff09= \u8fdb\u7a0b\u4eec\u771f\u6b63\u540c\u65f6<\/strong>\u8dd1\u5728\u4e0d\u540c\u7684\u6838\u4e0a<\/p>\n

\u90a3\u4e48\u4e5f\u5c31\u6709\u4e86
\nP\u64cd\u4f5c \u2192 \u4e0a\u9501\uff08\u6211\u5728\u7528\uff0c\u522b\u4eba\u7b49\u7740\uff09
\nV\u64cd\u4f5c \u2192 \u89e3\u9501\uff08\u6211\u7528\u5b8c\u4e86\uff0c\u4e0b\u4e00\u4e2a\u6765\uff09<\/p>\n

\"Pasted<\/div><\/figure>\n

OK\u63a5\u4e0b\u6765\u662fPV\u64cd\u4f5c<\/p>\n

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\u4e34\u754c\u533a\u5c31\u662f\u8fdb\u7a0b<\/strong>\u4ee3\u7801\u4e2d\u8bbf\u95ee\u4e34\u754c\u8d44\u6e90\u7684\u4ee3\u7801<\/p>\n

\u4fe1\u53f7\u91cf\u5c31\u662f\u50cf\u6211\u4eec\u4e0a\u9762\u8bf4\u7684P\u64cd\u4f5c\u4e0eV\u64cd\u4f5c\uff0c\u4e5f\u5c31\u662f\u4e0a\u9501\u548c\u89e3\u9501<\/p>\n

P\u64cd\u4f5c\u5c31\u662f\u8ba9S\u81ea\u51cf1\uff0c\u4e5f\u5c31\u662f\u6211\u62ff\u4e86\u8fd9\u4e2a\u8d44\u6e90\uff0c\u7136\u540e\u5224\u65adS\u6b64\u65f6\u662f\u4e0d\u662f\u5c0f\u4e8e0\uff0c\u5982\u679c\u662f\u90a3\u5c31\u963b\u585e\u5e76\u8fdb\u5165\u963b\u585e\u961f\u5217\uff0c\u5982\u679c\u4e0d\u662f\u90a3\u5c31\u7ee7\u7eed\u8fdb\u7a0b\uff0c\u53ef\u4ee5\u8bb0\u6210\u201dplease\u7ed9\u6211\u4e2a\u8d44\u6e90\u5427\u201c\u91cc\u9762\u7684P<\/p>\n

V\u64cd\u4f5c\u5c31\u662f\u8ba9S\u81ea\u52a01\uff0c\u4e5f\u5c31\u662f\u6211\u91ca\u653e\u4e86\u8fd9\u4e2a\u8d44\u6e90\uff0c\u7136\u540e\u5224\u65ad\u6b64\u65f6S\u662f\u4e0d\u662f\u5c0f\u4e8e\u7b49\u4e8e0\uff0c\u5982\u679c\u662f\u90a3\u5c31\u8ba9\u963b\u585e\u961f\u5217\u91cc\u7684\u8fdb\u7a0b\u62ff\u5230\u8d44\u6e90\u7136\u540e\u8fdb\u884c\u4ed6\u7684\u8fdb\u7a0b\uff0c\u5982\u679c\u4e0d\u662f\u90a3\u5c31\u7ee7\u7eed\u6211\u4eec\u81ea\u5df1\u7684\u8fdb\u7a0b<\/p>\n

\"Pasted<\/div><\/figure>\n

\u4f8b\u5982\u8fd9\u9898\uff0c\u5728\u6ca1\u6709PV\u4fe9\u4e2a\u4fe1\u53f7\u64cd\u4f5c\u7684\u60c5\u51b5\u4e0b\uff0c\u73b0\u5b9e\u903b\u8f91\u4f1a\u53d8\u6210\u5373\u4fbf\u5e02\u573a\u6ca1\u6709\u4e1c\u897f\u4e86\u4f46\u6d88\u8d39\u8005\u8fd8\u662f\u4f1a\u53d6\u4ea7\u54c1\uff0c\u903b\u8f91\u51fa\u73b0\u9519\u8bef
\n\u5f15\u5165\u4fe1\u53f7\u91cf\u540e\uff0c\u5b9e\u9645\u903b\u8f91\u6d41\u7a0b\u5927\u6982\u662f<\/p>\n

\u751f\u4ea7\u8005\u8fdb\u7a0b\uff1a
\n\u751f\u4ea7\u4e00\u4e2a\u4ea7\u54c1\uff0c\u7136\u540eP\u64cd\u4f5cS1-1\u53d8\u4e3a0\uff0c\u9001\u4ea7\u54c1\u5230\u7f13\u51b2\u533a\uff0cV\u64cd\u4f5cS2+1
\n\u7136\u540e\u5faa\u73af\u4e00\u904d\uff0c\u7136\u540e\u8fd9\u65f6\u5019\u6211\u4eec\u518d\u6267\u884cP\u64cd\u4f5c\u540eS1\u53d8\u4e3a-1\uff0c\u8fdb\u5165\u963b\u585e<\/p>\n

\u6d88\u8d39\u8005\u8fdb\u7a0b\uff1a
\n\u597d\uff0c\u90a3\u4e48\u63a5\u4e0b\u6765\u5c31\u662f\u6d88\u8d39\u8005\u8fdb\u7a0b\uff0c\u6267\u884cP\u64cd\u4f5c\u4f7fS2-1\uff0c\u4e1b\u7f13\u51b2\u533a\u62ff\u8d70\u4ea7\u54c1\uff0c\u6267\u884cV\u64cd\u4f5c\u4f7fS1+1\uff0c\u6d88\u8d39\u4ea7\u54c1\uff0c\u8fd9\u65f6\u5019\u6211\u4eec\u518d\u6b21\u8d70\u5230\u8fd9\u4e2a\u8fdb\u7a0b\u7684P\u64cd\u4f5c\u53d1\u73b0\u6b38\u4e5f\u963b\u585e\u4e86\uff0c\u4e14\u8fd9\u65f6\u5019\u6211\u4eec\u7684S1\u662f=0\u7684
\n\u90a3\u4e48\u518d\u8d70\u4e00\u904d\u751f\u4ea7\u8005\u6d41\u7a0b\u4ee5\u6b64\u5f80\u590d<\/p>\n

\"Pasted<\/div><\/figure>\n

\u63a5\u4e0b\u6765\u662f\u8fd9\u4e2a
\n\u5176\u5b9e\u8fd9\u91cc\u7684S1-5\u548c\u5404\u4e2aP\u90fd\u6ca1\u6709\u7279\u5b9a\u7684\u7ed1\u5b9a\u5173\u7cfb\uff0c\u6240\u4ee5\u8fd9\u91cc\u6211\u4eec\u53ea\u9700\u8981\u5224\u65ad\u6bcf\u4e2aP\u7684\u51fa\u5ea6\u548c\u5165\u5ea6\u5c31\u53ef\u4ee5\u4e86
\n\u6bd4\u5982\u8fd9\u91ccP1\u4fe9\u4e2a\u51fa\u5ea6\u5c31\u662f\u4fe9\u4e2aV
\nP2\u4fe9\u4e2a\u5165\u5ea6\u4e00\u4e2a\u51fa\u5ea6\u5c31\u662f2P 1V\u4e86
\n\u7c7b\u6bd4\u4e0b\u6765\u5c31\u5dee\u4e0d\u591a\u662f\u8fd9\u6837<\/p>\n

\u8fdb\u7a0b\u7ba1\u74062<\/h3>\n
\"Pasted<\/div><\/figure>\n
\"Pasted<\/div><\/figure>\n

OK\u63a5\u4e0b\u6765\u662f\u6b7b\u9501
\n\u6b7b\u9501\u7684\u89e6\u53d1\u6761\u4ef6\u5c31\u662f\u7b2c\u4e8c\u5f20\u56fe\u4e2d\u663e\u793a\u7684
\n\u9700\u8981\u8d44\u6e90\u4e92\u65a5\u548c\u8fdb\u7a0b\u4e92\u65a5\u7684\u60c5\u51b5\u4e0b\uff0c\u51e0\u4e2a\u8fdb\u7a0b\u4e92\u76f8\u4e89\u62a2\u8d44\u6e90
\n\u90a3\u4e48\u4e00\u65e6\u51fa\u73b0\u50cf\u56fe\u4e00\u90a3\u79cd\u6211\u4eec\u4ee8\u90fd\u9700\u8981\u4e94\u4e2a\u8d44\u6e90\uff0c\u4f46\u4f60\u90fd\u7ed9\u6211\u5361\u5728\u56db\u8d44\u6e90
\n\u90a3\u4e48\u5c31\u4f1a\u89e6\u53d1\u4fdd\u6301\u548c\u7b49\u5f85
\n\u800c\u5927\u4f19\u53c8\u4e0d\u4f1a\u4e92\u76f8\u5265\u593a\u8d44\u6e90
\n\u90a3\u4e48\u5c31\u4f1a\u53d1\u751f\u90a3\u79cdA\u7b49\u5f85B\u5b8c\u6210\u7136\u540e\u62ff\u8d44\u6e90\uff0cB\u4e5f\u5728\u7b49\u5f85C\uff0cC\u4e5f\u5728\u7b49\u5f85A\u7684\u5c34\u5c2c\u5c40\u9762<\/p>\n

\u90a3\u4e48\u50cf\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4e5f\u5c31\u662f\u6240\u6709\u8fdb\u7a0b\u6240\u9700\u8d44\u6e90\u76f8\u540c\u7684\u60c5\u51b5\u4e0b\uff0c\u4e0d\u4f1a\u89e6\u53d1\u6b7b\u9501\u6240\u9700\u6700\u5c0f\u8d44\u6e90\u7684\u516c\u5f0f\u662f
\nn*(m-1)+1
\n\u5176\u4e2dn\u662f\u8fdb\u7a0b\u6570\u91cf\uff0cm\u662f\u5927\u4f19\u90fd\u9700\u8981\u7684\u8d44\u6e90\u6570\u91cf\uff0c-1\u662f\u6240\u6709\u4eba\u521a\u597d\u963b\u585e\u7684\u524d\u63d0\uff0c+1\u662f\u521a\u597d\u6709\u4e00\u4e2a\u8fdb\u7a0b\u80fd\u8fd0\u884c\u7684\u5fc5\u8981\u6761\u4ef6
\n\u90a3\u4e48\u7531\u6b64\u5f15\u7533\uff0c\u5982\u679c\u6211\u4eec\u5927\u4f19\u90fd\u9700\u8981\u7684\u662f\u4e0d\u540c\u7684\u5462\u6bd4\u59823\uff0c4\uff0c5
\n\u90a3\u4e48\u516c\u5f0f\u5c31\u53d8\u4e3a
\n$$sum_{i=1}^{N} n_i – N + 1$$
\n\u5176\u4e2dN\u4e3a\u8fdb\u7a0b\u603b\u6570<\/p>\n

\u90a3\u4e48\u4e3a\u4e86\u9632\u6b62\u6b7b\u9501\u89e6\u53d1\u6211\u4eec\u5c31\u9700\u8981\u4fe9\u4e2a\u7b97\u6cd5\uff0c\u4e00\u4e2a\u662f\u6709\u5e8f\u8d44\u6e90\u5206\u914d\u6cd5\uff0c\u53e6\u5916\u4e00\u4e2a\u662f\u94f6\u884c\u5bb6\u7b97\u6cd5<\/p>\n

\"Pasted<\/div><\/figure>\n

\u90a3\u4e48\u63a5\u4e0b\u6765\u5c31\u4f9d\u9760\u4f8b\u9898\u6765\u5c55\u793a\u94f6\u884c\u5bb6\u7b97\u6cd5<\/p>\n

\u9996\u5148\u6211\u4eec\u770b\u5230\u9898\u76ee\u91cc\u5199\u4e86\u53c8R1,R2,R3\u4e09\u4e2a\u4e92\u65a5\u7684\u8d44\u6e90\u5206\u522b\u53ef\u7528\u8d44\u6e90\u6570\u4e3a10\uff0c5\uff0c3
\n\u800c\u6709P1,P2,P3,P4,P5\u4e94\u4e2a\u8fdb\u7a0b
\n\u6839\u636e\u56fe\u4e2d\u4fe1\u606f\u6211\u4eec\u5c06\u53ef\u7528\u8d44\u6e90-\u5df2\u5206\u914d\u8d44\u6e90\uff1a
\nR1=10-1-2-3-1-1=2
\nR2=5-1-1-1-1-1=0
\nR3=3-1-1=1
\n\u6700\u540e\u5f97\u76ee\u524d\u53ef\u7528\u8d44\u6e90\u4e3a2,0,1<\/p>\n

\u597d\u90a3\u4e48\u63a5\u4e0b\u6765\u6211\u4eec\u5728\u6a2a\u5411\u83b7\u53d6\u76ee\u524d\u6bcf\u4e2a\u8fdb\u7a0b\u6240\u9700\u7684\u8d44\u6e90\u6570
\nP1\u4e3a(5-1, 3-1, 1-1)->(4,2,0)
\nP2\u4e3a(3-2, 2-1, 0-0)->(1,1,0)
\nP3\u4e3a(6-3, 1-1, 1-0)->(3,0,1)
\nP4\u4e3a(3-1, 3-1, 2-1)->(2,2,1)
\nP5\u4e3a(2-1, 1-1, 1-0)->(1,0,1)<\/p>\n

\u90a3\u4e48\u6309\u7167\u94f6\u884c\u5bb6\u7b97\u6cd5\uff0c\u6211\u4eec\u9700\u8981\u4e1b\u6700\u5c0f\u53ef\u517c\u5bb9\u7684\u8fdb\u7a0b\u5f00\u59cb\u7ed9\u4ed6\u4eec\u501f\u8d37
\n\u9996\u5148\u662fP5\uff0c\u628a\u76ee\u524d\u53ef\u7528\u8d44\u6e90\u7ed9P5\u4ee5\u542f\u52a8\u8fdb\u7a0b\uff0c\u8fdb\u7a0b\u7ed3\u675f\u540e\u91ca\u653e\u8d44\u6e90
\n\u5f97\u76ee\u524d\u53ef\u7528\u8d44\u6e90\u4e3aR1+R2+R3+P5=\uff083\uff0c1\uff0c1\uff09
\n\u597d\u63a5\u4e0b\u6765\u6211\u4eec\u6309\u7167\u987a\u5e8f\u4f9d\u6b21\u5bfb\u627e\u517c\u5bb9\u7684\uff0c\u627e\u5230P2
\n\u7ed9\u4ed6\u8d44\u6e90\u5f00\u542f\u8fdb\u7a0b\uff0c\u7136\u540e\u91ca\u653e\u8d44\u6e90\uff0c\u6839\u636e\u4e0a\u9762\u5f97\u516c\u5f0f\u6211\u4eec\u5f97\u5230\u73b0\u5728\u53ef\u7528\u8d44\u6e90\u53d8\u4e3a
\n\uff085\uff0c2\uff0c1\uff09
\n\u5728\u7ee7\u7eed\u68c0\u7d22\u6211\u4eec\u627e\u5230P4
\n\u540c\u7406\u83b7\u5f97\u73b0\u5728\u53ef\u7528\u8d44\u6e90\u4e3a\uff086\uff0c3\uff0c2\uff09
\n\u4ee5\u6b64\u5f80\u590d<\/p>\n

\u5b8c\u6574\u5b89\u5168\u5e8f\u5217<\/h3>\n\n\n\n\n\n\n\n\n\n
\u6b65\u9aa4<\/th>\n\u8fdb\u7a0b<\/th>\n\u9700\u6c42<\/th>\n\u5f53\u524d\u53ef\u7528<\/th>\n\u91ca\u653e\u540e\u53ef\u7528<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nP5<\/td>\n(1,0,1)<\/td>\n(2,0,1) \u2713<\/td>\n(3,1,1)<\/td>\n<\/tr>\n
2<\/td>\nP2<\/td>\n(1,1,0)<\/td>\n(3,1,1) \u2713<\/td>\n(5,2,1)<\/td>\n<\/tr>\n
3<\/td>\nP4<\/td>\n(2,2,1)<\/td>\n(5,2,1) \u2713<\/td>\n(6,3,2)<\/td>\n<\/tr>\n
4<\/td>\nP1<\/td>\n(4,2,0)<\/td>\n(6,3,2) \u2713<\/td>\n(7,4,3)<\/td>\n<\/tr>\n
5<\/td>\nP3<\/td>\n(3,0,1)<\/td>\n(7,4,3) \u2713<\/td>\n\u5b8c\u6210\uff01<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5b89\u5168\u5e8f\u5217\u4e3a P5\u2192P2\u2192P4\u2192P1\u2192P3<\/strong><\/p>\n

\u94f6\u884c\u5bb6\u7b97\u6cd5\u6838\u5fc3\u6b65\u9aa4\u603b\u7ed3<\/p>\n

\u2460 \u8ba1\u7b97\u5f53\u524d\u53ef\u7528\u8d44\u6e90 = \u603b\u8d44\u6e90 – \u6240\u6709\u5df2\u5206\u914d
\n\u2461 \u8ba1\u7b97\u6bcf\u4e2a\u8fdb\u7a0b\u8fd8\u9700\u8981 = \u6700\u5927\u9700\u6c42 – \u5df2\u5206\u914d
\n\u2462 \u627e\u9700\u6c42 \u2264 \u53ef\u7528\u8d44\u6e90\u7684\u8fdb\u7a0b \u2192 \u6267\u884c\u5e76\u91ca\u653e
\n\u2463 \u91cd\u590d\u2462\u76f4\u5230\u6240\u6709\u8fdb\u7a0b\u5b8c\u6210 \u2192 \u5b89\u5168\u72b6\u6001 \u2713<\/p>\n

\u5b58\u50a8\u7ba1\u7406<\/h3>\n
\"Pasted<\/div><\/figure>\n

\u554a\u63a5\u4e0b\u6765\u5c31\u662f\u5b58\u50a8\u7ba1\u7406<\/p>\n

\u90a3\u6211\u4eec\u5148\u8bb2\u8fd9\u4e2a\u5206\u533a\u5b58\u50a8\u7ba1\u7406\u5427
\n\u6bd4\u5982\u6211\u4eec\u5185\u5b58\u6709100K\u7684\u5bb9\u91cf
\n\u90a3\u4e48\u5728\u5355\u4e00\u8fde\u7eed\u5206\u914d\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4efb\u52a1\u53ea\u80fd\u4e00\u4e2a\u4e00\u4e2a\u5730\u8c03\u7528\uff0c\u800c\u4e0d\u80fd\u540c\u65f6\u6267\u884c\u4fe9\u4e2a\u4efb\u52a1\uff0c\u6bd4\u5982\u6211\u6709\u4e00\u4e2a50K\u548c\u4e00\u4e2a80K\u7684\u4efb\u52a1\uff0c\u90a3\u4e48\u53ea\u80fd\u540c\u65f6\u6267\u884c\u4e00\u4e2a<\/p>\n

\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u6211\u4eec\u5c31\u6709\u4e86\u56fa\u5b9a\u5206\u533a\uff0c\u6211\u5c31\u53ef\u4ee5\u628a\u5185\u5b58\u5212\u5206\u4e3a80K\u548c20K\u4fe9\u4e2a\u5206\u533a\u4ece\u800c\u80fd\u591f\u540c\u65f6\u89e3\u51b3\u5c0f\u4e8e\u7b49\u4e8e80K\u548c\u5c0f\u4e8e\u7b49\u4e8e20K\u7684\u4efb\u52a1\uff0c\u4f46\u8fd9\u53c8\u51fa\u73b0\u4e86\u4e00\u4e2a\u95ee\u9898\u5c31\u662f\uff0c\u6211\u53ea\u80fd\u5728\u8fd9\u4fe9\u4e2a\u5206\u533a\u6267\u884c\u4fe9\u4e2a\u4efb\u52a1\uff08\u5373\u4fbf\u5206\u533a\u591a\u4e86\u4f46\u53ef\u540c\u65f6\u6267\u884c\u7684\u4efb\u52a1\u4e5f\u662f\u56fa\u5b9a\u7684\uff0c\u5373\u5206\u533a\u6570\u91cf\uff09<\/p>\n

\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u9760\u53ef\u53d8\u5206\u533a\u52a8\u6001\u5730\u8c03\u6574\u6211\u4eec\u7684\u4efb\u52a1\u533a\uff0c\u6bd4\u5982\u6211\u6709\u4fe9\u4e2a20K\u7684\u4efb\u52a1\u8fdb\u5165\u4e86\u5185\u5b58\uff0c\u597d\u90a3\u4e48\u8fd9\u65f6\u5019\u8fd9\u4fe9\u4efb\u52a1\u5c31\u7b97\u88ab\u52a8\u6001\u5730\u5212\u5206\u4e86\u4fe9\u4e2a\u4efb\u52a1\u533a\uff0c\u5269\u4e0b80K\u8fd8\u53ef\u4ee5\u6839\u636e\u540e\u7eed\u7684\u4efb\u52a1\u52a8\u6001\u5212\u5206\u4efb\u52a1\u533a\uff0c\u4f7f\u5f97\u6211\u4eec\u7684\u7a7a\u95f4\u5229\u7528\u7387\u88ab\u6781\u5927\u5730\u63d0\u5347\u4e86\uff0c\u800c\u4e14\u6bcf\u5f53\u4efb\u52a1\u7ed3\u675f\uff0c\u8d44\u6e90\u88ab\u91ca\u653e\u540e\uff0c\u7a7a\u767d\u7684\u533a\u57df\u4f1a\u81ea\u52a8\u8fdb\u884c\u6574\u5408\uff0c\u6574\u5408\u6210\u4e00\u4e2a\u7a7a\u767d\u533a\uff08\u975e\u8fde\u7eed\u4e0d\u5408\u5e76\uff09<\/p>\n

OK\u554a\u662f\u4e0d\u662f\u8fd9\u4e9b\u770b\u7740\u90fd\u5f88\u7f8e\u597d\uff0c\u4f46\u662f\u5982\u679c\u4f60\u9047\u5230\u4e86\u4e00\u4e2a200K\u7684\u4efb\u52a1\u662f\u5427\uff0c\u600e\u4e48\u529e\u5462\uff0c\u5206\u533a\u5b58\u50a8\u7ba1\u7406\u7684\u6a21\u5f0f\u4e0b\u6bcf\u4e2a\u4efb\u52a1\u90fd\u5f97\u6574\u4e2a\u585e\u8fdb\u53bb\u800c\u4f60\u8fd9200K\u585e\u4e0d\u8fdb\u53bb
\n\u90a3\u4e48\u8fd9\u65f6\u5019\u6211\u4eec\u5c31\u9700\u8981\u5206\u9875\u5b58\u50a8\u7ba1\u7406\u4e86<\/p>\n

\"Pasted<\/div><\/figure>\n

yep\uff0c\u8fd9\u5c31\u662f\u9875\u5f0f\u5b58\u50a8
\n\u4e00\u822c\u6bcf\u9875\u7684\u5927\u5c0f\u90fd\u7531\u8ba1\u7b97\u673a\u51b3\u5b9a\uff0c\u4e0d\u7531\u6211\u4eec\u51b3\u5b9a\uff0c\u548c\u5206\u6bb5\u5b58\u50a8\u7ba1\u7406\u4e0d\u4e00\u6837\u6211\u4eec\u4e00\u4f1a\u8bb2
\n\u90a3\u4e00\u9875\u5927\u6982\u90fd\u662f4K\u5dee\u4e0d\u591a\uff0c\u5bf9\u4e5f\u5c31\u662f\u6211\u4eec\u4e0b\u9762\u90a3\u4e2a\u9875\u5185\u5730\u5740\uff0c\u6211\u4eec\u8981\u770b\u4ed6\u662f0-11\u603b\u517112\u4f4d
\n\u90a3\u4e48\u5c31\u662f2^12 byte\uff0c\u4e5f\u5c31\u662f4K\u7684\u5927\u5c0f
\n\u7136\u540e\u5c31\u662f\u8fd9\u91cc\u7684\u9875\u8868\uff0c\u6211\u4eec\u4e00\u822c\u6709\u4fe9\u79cd\u5730\u5740\uff0c\u4e00\u79cd\u662f\u903b\u8f91\u5730\u5740\u4e00\u79cd\u662f\u7269\u7406\u5730\u5740\uff0c\u5c06\u903b\u8f91\u5730\u5740\u8f6c\u6362\u4e3a\u7269\u7406\u5730\u5740\u8fdb\u884c\u5bfb\u5740\u5c31\u662f\u901a\u8fc7\u6211\u4eec\u7684\u9875\u8868\u8fdb\u884c\u9875\u53f7\u5757\u53f7\u8f6c\u6362\u8fdb\u884c\u64cd\u4f5c\u7684
\n\u4f60\u770b\uff0c\u6211\u4eec\u903b\u8f91\u5730\u5740\u6709\u9875\u53f7\u548c\u9875\u5185\u5730\u5740
\n\u90a3\u4e48\u7269\u7406\u5730\u5740\u4e5f\u540c\u6837\u6709\u5757\u53f7\u548c\u5757\u5185\u5730\u5740
\n\u90a3\u4e48\u6211\u4eec\u7684\u9875\u53f7\u5c31\u901a\u8fc7\u8868\u5185\u7684\u6620\u5c04\u8fdb\u884c\u8f6c\u6362
\n\u6bd4\u5982\u6211\u6709\u4e00\u4e2a\u903b\u8f91\u5730\u5740\u662f2C38H\uff0c\u5176\u4e2d2\u5bf9\u5e94\u9875\u53f7\uff0cC38H\u5bf9\u5e94\u9875\u5185\u5730\u5740\uff0c\u8f6c\u6362\u8fc7\u7a0b\u4e2d\u9875\u53f7\u5bf9\u7167\u9875\u8868\u6620\u5c04\u8fdb\u884c\u8f6c\u6362\uff0c\u5730\u5740\u9879\u4e0d\u53d8\uff0c\u90a3\u4e48\u6211\u4eec\u627e\u5230\u9875\u53f7\u5728\u9875\u8868\u4e2d\u7684\u6620\u5c04\uff0c\u4e5f\u5c31\u662f6
\n\u90a3\u4e48\u8f6c\u6362\u540e\u7684\u7269\u7406\u5730\u5740\u5c31\u662f6C38H<\/p>\n

\u800c\u4e14\uff0c\u6211\u4eec\u9875\u5f0f\u7ba1\u7406\u5185\u5b58\u5229\u7528\u7387\u8f83\u9ad8\uff0c\u6ca1\u6709\u5916\u90e8\u788e\u7247\uff0c\u56e0\u4e3a\u9875\u7684\u5927\u5c0f\u56fa\u5b9a\uff0c\u4f46\u53ef\u80fd\u6709\u5185\u90e8\u788e\u7247\uff0c\u56e0\u4e3a\u6700\u540e\u4e00\u9875\u53ef\u80fd\u586b\u4e0d\u6ee1\uff0c\u6d6a\u8d39\u7a7a\u95f4
\n\u800c\u4e14\u8fd8\u6709\u4e00\u79cd\u6296\u52a8\u73b0\u8c61\uff0c\u5c31\u662f\u6211\u5185\u5b58\u4e0d\u8db3\u65f6\uff0c\u521a\u6362\u51fa\u53bb\u7684\u9875\u9762\u53c8\u88ab\u9a6c\u4e0a\u9700\u8981\uff0c\u7cfb\u7edf\u4e0d\u65ad\u5207\u9875\u6362\u5165\u6362\u51fa\u5bfc\u81f4CPU\u5927\u90e8\u5206\u65f6\u95f4\u90fd\u5728\u5207\u9875\u9762\u800c\u975e\u6267\u884c\u4efb\u52a1\uff0c\u6548\u7387\u6781\u4f4e<\/p>\n

\"Pasted<\/div><\/figure>\n

\u90a3\u6709\u4e00\u4e2a\u8fd9\u6837\u7684\u4f8b\u9898\u54b1\u5c31\u6765\u56de\u987e\u4e00\u4e0b\u521a\u521a\u7684\u5206\u533a\u5b58\u50a8\u7ba1\u7406\u91cc\u7684\u53ef\u53d8\u5206\u533a
\n \u8fd9\u91cc\u770b\u5230\u5982\u679c\u6211\u4eecP5\u6267\u884c\u5b8c\u91ca\u653e\u5185\u5b58\uff0c\u90a3\u4e486\u533a\u5c31\u53d8\u4e3a\u7a7a\u95f2\u533a\u7684\uff0c\u53ef\u4ee5\u4e0e5\uff0c7\u4fe9\u533a\u8fde\u7eed\uff0c\u4ece\u800c\u5408\u5e76\u6210\u4e00\u4e2a\u7a7a\u95f2\u533a<\/p>\n

\"Pasted<\/div><\/figure>\n

OK\u90a3\u63a5\u4e0b\u6765\u5c31\u662f\u6bb5\u5f0f\u5b58\u50a8\u4e86
\n\u5de6\u4fa7\u6211\u4eec\u770b\u5230\u7684\u4f5c\u4e1a\u7a7a\u95f4\u5c31\u662f\u7c7b\u4f3c\u7a0b\u5e8f\u4e2d\u4e3b\u51fd\u6570\u548c\u5b50\u51fd\u6570\u6240\u5360\u7528\u7684\u7a7a\u95f4\uff0c\u90a3\u4e48\u6839\u636e\u8fd9\u4e9b\u6bb5\u7684\u5927\u5c0f\u6211\u4eec\u53ef\u4ee5\u5bf9\u5e94\u5730\u5728\u5185\u5b58\u4e2d\u5206\u914d\u5185\u5b58\u7a7a\u95f4\uff0c\u800c\u4e14\u8fd9\u4e9b\u6bb5\u7684\u5927\u5c0f\u662f\u7531\u7a0b\u5e8f\u5458\u51b3\u5b9a\u7684\uff0c\u8fd9\u4e0e\u9875\u5f0f\u5b58\u50a8\u4e0d\u540c
\n\u7c7b\u4f3c\u7684\u6bb5\u53f7\u548c\u6bb5\u5185\u5730\u5740\u4e5f\u4e0e\u6211\u4eec\u4e0a\u9762\u9875\u5f0f\u5b58\u50a8\u5730\u7ed3\u6784\u76f8\u540c
\n\u540c\u6837\u7684\u6211\u4eec\u4e5f\u7531\u76f8\u5e94\u7684\u5bfb\u5740\u65b9\u6cd5\u4e5f\u5c31\u662f<\/p>\n

\u903b\u8f91\u5730\u5740 = \u6bb5\u53f7 + \u6bb5\u5185\u5730\u5740
\n \u2193
\n\u67e5\u6bb5\u8868\u627e\u5230\u8be5\u6bb5\u7684\u57fa\u5740
\n \u2193
\n\u7269\u7406\u5730\u5740 = \u57fa\u5740 + \u6bb5\u5185\u5730\u5740<\/p>\n

\u90a3\u4e48\u6211\u4eec\u7684\u51fd\u6570\u53ef\u4ee5\u88ab\u5171\u4eab\u8c03\u7528\uff0c\u540c\u7406\u6211\u4eec\u8fd9\u8fb9\u7684\u5185\u5b58\u4e5f\u53ef\u4ee5\u88ab\u5171\u4eab\u8c03\u7528
\n\u4f46\u7531\u4e8e\u6211\u4eec\u6bb5\u957f\u5728\u5185\u5b58\u4e2d\u7684\u5212\u5206\uff0c\u6211\u4eec\u788e\u7247\u5229\u7528\u7387\u6d6a\u8d39\u8f83\u5927\uff0c\u4e5f\u5c31\u662f\u5916\u788e\u7247
\n\u90a3\u4e48\u5bf9\u6bd4\u800c\u8a00<\/p>\n\n\n\n\n\n\n
<\/th>\n\u5185\u90e8\u788e\u7247<\/th>\n\u5916\u90e8\u788e\u7247<\/th>\n<\/tr>\n<\/thead>\n
\u9875\u5f0f<\/td>\n\u6709<\/td>\n\u65e0<\/td>\n<\/tr>\n
\u6bb5\u5f0f<\/td>\n\u65e0<\/td>\n\u6709<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\"Pasted<\/div><\/figure>\n

\u90a3\u4e48\u4e3a\u4e86\u5f25\u8865\u4fe9\u8005\u7684\u4f18\u7f3a\u70b9\uff0c\u5c31\u6709\u4e86\u6bb5\u9875\u5f0f\u5b58\u50a8
\n\u6d41\u7a0b\u5927\u6982\u662f<\/p>\n

\u6bb5\u53f7 \u2192 \u67e5\u6bb5\u8868 \u2192 \u627e\u5230\u5bf9\u5e94\u7684\u9875\u8868
\n\u9875\u53f7 \u2192 \u67e5\u9875\u8868 \u2192 \u627e\u5230\u7269\u7406\u5757\u53f7
\n\u7269\u7406\u5730\u5740 = \u5757\u53f7 + \u9875\u5185\u5730\u5740<\/p>\n

\u6bb5\u9875\u5f0f = \u6bb5\u5f0f\u7684\u903b\u8f91\u6e05\u6670<\/strong>\u4f18\u70b9 + \u9875\u5f0f\u7684\u65e0\u5916\u90e8\u788e\u7247<\/strong>\u4f18\u70b9 \u4ee3\u4ef7\u662f\u9700\u8981\u67e5\u4e24\u6b21\u8868\uff0c\u6548\u7387\u8f83\u4f4e
\n\u90a3\u4e48\u4e5f\u5bf9\u5e94\u6709\u76f8\u540c\u7684\u7ed3\u6784
\n\u6700\u591a\u6709256\u4e2a\u6bb5\uff0c\u6bcf\u4e2a\u6bb5\u6700\u5927\u5141\u8bb8\u67094096\u4e2a\u9875\u53f7\uff0c\u9875\u7684\u5927\u5c0f\u4e3a4K<\/p>\n

\u603b\u7ed3\u800c\u8a00<\/p>\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/th>\n\u788e\u7247\u7c7b\u578b<\/th>\n\u5927\u5c0f\u51b3\u5b9a\u8005<\/th>\n\u5171\u4eab<\/th>\n\u6548\u7387<\/th>\n<\/tr>\n<\/thead>\n
\u9875\u5f0f<\/strong><\/td>\n\u5185\u90e8\u788e\u7247<\/td>\n\u7cfb\u7edf\u51b3\u5b9a<\/td>\n\u96be<\/td>\n\u9ad8<\/td>\n<\/tr>\n
\u6bb5\u5f0f<\/strong><\/td>\n\u5916\u90e8\u788e\u7247<\/td>\n\u7a0b\u5e8f\u5458\u51b3\u5b9a<\/td>\n\u6613<\/td>\n\u4e2d<\/td>\n<\/tr>\n
\u6bb5\u9875\u5f0f<\/strong><\/td>\n\u5185\u90e8\u788e\u7247<\/td>\n\u4e24\u8005\u7ed3\u5408<\/td>\n\u6613<\/td>\n\u4f4e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u6587\u4ef6\u7ba1\u7406<\/h2>\n
\"Pasted<\/div><\/figure>\n

\u8fd9\u5757\u7684\u5185\u5bb9\u5176\u5b9e\u633a\u5c11\u7684
\n\u5c31\u50cf\u4e0a\u56fe\u6240\u8bf4\uff0c\u6587\u4ef6\u662f\u6309\u540d\u5b58\u50a8<\/p>\n

\u800c\u6587\u4ef6\u76ee\u5f55\u5c31\u7c7b\u4f3c\u4e00\u5f20\u8868\uff0c\u91cc\u9762\u7684\u6bcf\u4e00\u884c\u5c31\u662f\u4e00\u4e2a\u6587\u4ef6\u76ee\u5f55\u9879\uff08FCB\uff09
\nFCB=\u6587\u4ef6\u63a7\u5236\u5757
\n\u6574\u4e2a\u6587\u4ef6\u76ee\u5f55\u7531\u591a\u4e2aFCB\u7ec4\u6210<\/p>\n

\u800cFCB\u5305\u542b
\n– \u6587\u4ef6\u540d
\n– \u6587\u4ef6\u7269\u7406\u5730\u5740\uff08\u5b58\u5728\u78c1\u76d8\u54ea\u4e2a\u4f4d\u7f6e\uff09
\n– \u6587\u4ef6\u957f\u5ea6
\n– \u5b58\u53d6\u63a7\u5236\u4fe1\u606f\uff08\u8bfb\/\u5199\/\u6267\u884c\u6743\u9650\uff09
\n– \u65f6\u95f4\u4fe1\u606f\uff08\u521b\u5efa\u65f6\u95f4\u3001\u4fee\u6539\u65f6\u95f4\uff09<\/p>\n

\"Pasted<\/div><\/figure>\n

\u90a3\u63a5\u4e0b\u6765\u5c31\u662f\u6811\u5f62\u76ee\u5f55\u7ba1\u7406
\n\u54b1\u7ecf\u5e38\u7528\u7535\u8111\u90fd\u5bf9\u8fd9\u73a9\u610f\u4e0d\u964c\u751f\u5427<\/p>\n

\u90a3\u5c31\u7b80\u5355\u8bb2\u8bb2\u5427
\n\u6bcf\u4e2a\u6811\u72b6\u8282\u70b9\u53ef\u4ee5\u4ec0\u4e48\u90fd\u4e0d\u5b58\uff0c\u6216\u8005\u5b58\u6587\u4ef6\uff0c\u6587\u4ef6\u5939
\n\u5b83\u672c\u8eab\u53ef\u4ee5\u662f\u6587\u4ef6\u5939\u6216\u8005\u6587\u4ef6
\n\u90a3\u5982\u679c\u8981\u5bfb\u5740\u5462
\n\u6bd4\u5982\u6211\u73b0\u5728\u5728D1\u76ee\u5f55\uff0c\u90a3\u4e48\u6211\u8981\u627e\u6211\u7684F1
\n\u90a3\u4e48F1\u7684\u7edd\u5bf9\u8def\u5f84\u5c31\u8981\u4ece\u6211\u4eec\u7684\u6839\u76ee\u5f55\u5f00\u59cb\u627e\u4e5f\u5c31\u662f
\n\/D1\/W1\/F1
\n\u800c\u76f8\u5bf9\u8def\u5f84\u5c31\u662f\u4ece\u5f53\u524d\u76ee\u5f55\u5f00\u59cb\u627e\u4e5f\u5c31\u662f
\nW1\/F1
\n\u800c\u6587\u4ef6\u7684\u5168\u540d\u7684\u8bdd
\n\u6bd4\u5982\u6211\u4eec\u7684F1\u662ftxt\u6587\u4ef6\uff0c\u90a3\u4e48\u4ed6\u7684\u6587\u4ef6\u540d\u5c31\u662f\u7edd\u5bf9\u8def\u5f84\uff0b\u6587\u4ef6\u7c7b\u578b
\n\u4e5f\u5c31\u662f\/D1\/W1\/F1.txt\u4e86<\/p>\n

\"Pasted<\/div><\/figure>\n

\u63a5\u4e0b\u6765\u5c31\u662f\u8fd9\u4e2a\u4f4d\u793a\u56fe\u4e86<\/p>\n

\u5176\u4e2d\u6bcf\u4e00\u884c\u4ee3\u8868\u4e00\u4e2a\u5b50\uff0c\u6bcf\u4e00\u4e2a\u683c\u5b50\u4ee3\u8868\u4e00\u4e2a\u7269\u7406\u5757<\/p>\n

\u8fd9\u91cc\u76841\uff0c0\u5206\u522b\u4ee3\u8868\u88ab\u5360\u7528\u548c\u672a\u88ab\u5360\u7528
\n\u7136\u540e\u7269\u7406\u5757\u4e1b\u7f16\u53f70\u5f00\u59cb\u8ba1\u7b97\uff0c\u5b57\u4e5f\u662f<\/p>\n

\u5df2\u77e5\u67d0\u4e2a\u683c\u5b50\u7684\u5b57\u53f7<\/strong>\u548c\u4f4d\u53f7<\/strong>\uff0c\u6c42\u5b83\u662f\u7b2c\u51e0\u53f7\u7269\u7406\u5757\uff1a<\/p>\n

\u7269\u7406\u5757\u53f7=\u5b57\u53f7\u00d7\u5b57\u957f+\u4f4d\u53f7<\/p>\n

\u4ee5\u8fd9\u9053\u9898\u4e3a\u4f8b\uff0c\u5b57\u957f = 16\uff08\u6bcf\u884c16\u5217\uff09<\/p>\n\n\n\n\n\n\n\n
\u4f8b\u5b50<\/th>\n\u8ba1\u7b97<\/th>\n\u7ed3\u679c<\/th>\n<\/tr>\n<\/thead>\n
\u7b2c0\u884c\u7b2c5\u5217<\/td>\n0 \u00d7 16 + 5<\/td>\n\u7b2c5\u53f7\u7269\u7406\u5757<\/td>\n<\/tr>\n
\u7b2c1\u884c\u7b2c3\u5217<\/td>\n1 \u00d7 16 + 3<\/td>\n\u7b2c19\u53f7\u7269\u7406\u5757<\/td>\n<\/tr>\n
\u7b2c2\u884c\u7b2c0\u5217<\/td>\n2 \u00d7 16 + 0<\/td>\n\u7b2c32\u53f7\u7269\u7406\u5757<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u53cd\u8fc7\u6765\u4e5f\u8981\u4f1a\uff1a\u5df2\u77e5\u7269\u7406\u5757\u53f7\uff0c\u6c42\u5b57\u53f7\u548c\u4f4d\u53f7<\/strong><\/p>\n

    \n
  • \u5b57\u53f7 = \u7269\u7406\u5757\u53f7 \u00f7 \u5b57\u957f\uff08\u53d6\u5546<\/strong>\uff09<\/li>\n
  • \u4f4d\u53f7 = \u7269\u7406\u5757\u53f7 \u00f7 \u5b57\u957f\uff08\u53d6\u4f59\u6570<\/strong>\uff09<\/li>\n<\/ul>\n
    \"Pasted<\/div><\/figure>\n

    \u6211\u4eec\u62ff\u4e00\u9053\u9898\u6765\u505a\u4f8b\u5b50\u5427
    \n\u9996\u5148\u7b2c\u4e00\u95ee\u4ed6\u95ee\u6211\u4eec16385\u53f7\u7269\u7406\u5757\u5728\u54ea\u4e2a\u5b57\u91cc\u9762
    \n\u597d\u9996\u5148\u7531\u4e8e\u6211\u4eec\u7684\u7269\u7406\u5757\u53f7\u4e1b0\u5f00\u59cb\uff0c\u6240\u4ee5\u6211\u4eec\u9700\u8981\u5728\u8fd9\u91cc\u7ed916385+1\u5f97\u5230\u4ed6\u662f\u7b2c16386\u4e2a\u7269\u7406\u5757
    \n\u7136\u540e\u5728\u8fd9\u91cc\u752816386\u00f732\uff08\u4e5f\u5c31\u662f\u5b57\u957f\uff0c\u6211\u4eec\u521a\u521a\u770b\u5230\u7684\u6bcf\u884c\u6709\u51e0\u5217\u7684\u90a3\u4e2a\uff09
    \n\u90a3\u4e48\u5c31\u53ef\u4ee5\u5f97\u5230512.1….
    \n\u90a3\u4e48\u8fd9\u91cc\u5f97\u5230\u7684\u5546\u4e3a512\uff0c\u5219\u6211\u4eec\u7684\u7ed3\u8bba\u4e5f\u662f\u7b2c512\u4e2a\u5b57<\/p>\n

    \u63a5\u4e0b\u6765\u662f\u7b2c\u4e8c\u9898\uff0c\u8fd9\u91cc\u8bf4\u78c1\u76d8\u5bb9\u91cf\u4e3a1000G\uff0c\u6362\u7b97\u6210M\u7684\u8bdd\u5c31\u662f1024 1000
    \n\u5bf9\u5e94\u5f97\u5230\u6211\u4eec\u7684\u7269\u7406\u5757\u603b\u6570\u5c31\u662f1024<\/em> 1000\/ 4
    \n\u7136\u540e\u53c8\u56e0\u4e3a\u6bcf\u4e2a\u5b57\u670932\u4f4d\u4e5f\u5c31\u662f32\u4e2a\u7269\u7406\u5757\uff0c\u90a3\u4e48\u53ef\u4ee5\u5f97\u5230\u6700\u7ec8\u7b97\u5f0f\u662f
    \n1024 1000 \/ 4<\/em> 32=2^3 * 1000=8000 <\/p>\n

    \u5b89\u5168\u6027\u57fa\u672c\u6982\u5ff5<\/h2>\n
    \"Pasted<\/div><\/figure>\n

    OK\u6211\u4eec\u6765\u5230\u4e86\u5b89\u5168\u6027\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u6211\u4e5f\u4e0d\u77e5\u9053\u8fd9\u5757\u4f1a\u8003\u591a\u5c11\u5206\u4e0d\u8fc7\u8fd8\u662f\u8981\u8ba4\u771f\u5bf9\u5f85\u4e00\u4e0b
    \n\u8fd9\u91cc\u7684
    \n\u7269\u7406\u5b89\u5168\u5c31\u662f\u7c7b\u4f3c\u4e8e\u673a\u623f\u554a\uff0c\u670d\u52a1\u5668\u8fd9\u4e9b\u5b9e\u4f53\u7684\u73a9\u610f\u7684\u5b89\u5168
    \n\u7f51\u7edc\u5b89\u5168\u5c31\u662f\u4f60\u4f20\u8f93\u6570\u636e\u8fc7\u7a0b\u4e2d\u4f60\u8981\u4fdd\u8bc1\u6570\u636e\u94fe\u8def\u5b89\u5168\uff0c\u4e0d\u80fd\u7ed9\u4eba\u5bb6\u7be1\u6539\u4e86\u6216\u8005\u6293\u5305\u4e86\u4e4b\u7c7b\u7684\uff0c\u8fd8\u8981\u68c0\u6d4b\u5165\u4fb5, \u9632ddos,\u4e2d\u95f4\u4eba\u653b\u51fb\u7b49
    \n\u7cfb\u7edf\u5b89\u5168\u7684\u8bdd\u5c31\u662f\u64cd\u4f5c\u7cfb\u7edf\u5c42\u9762\u7684\u5b89\u5168\u8fd9\u4e00\u5757\uff0c\u6bd4\u5982\u8d26\u53f7\u6743\u9650\uff0c\u8865\u4e01\u66f4\u65b0\uff0c\u75c5\u6bd2\u9632\u62a4\u7b49
    \n\u90a3\u5e94\u7528\u5b89\u5168\u7684\u8bdd\u5c31\u662f\u7c7b\u4f3c\u8f6f\u4ef6\u5b89\u5168\u8fd9\u4e00\u5757\uff0c\u6bd4\u5982\u767b\u9646\u6743\u9650\uff0c\u767b\u5165\u6821\u9a8c\uff0c\u9632SQL\u6ce8\u5165
    \n\u7ba1\u7406\u5b89\u5168\u5c31\u662f\u5c31\u662f\u516c\u53f8\u4eba\u5458\u7684\u7ba1\u7406\uff0c\u7ea6\u675f\uff0c\u6bd4\u5982\u4ec0\u4e48\u6837\u7684\u4eba\u8d4b\u4e88\u4ec0\u4e48\u6743\u9650\u4e4b\u7c7b\u7684<\/p>\n

    \u5b89\u5168\u6027\u57fa\u672c\u5c42\u6b21<\/h3>\n

    \u7269\u7406\u5b89\u5168
    \n \u2193
    \n\u7f51\u7edc\u5b89\u5168
    \n \u2193
    \n\u7cfb\u7edf\u5b89\u5168
    \n \u2193
    \n\u5e94\u7528\u5b89\u5168
    \n \u2193
    \n\u7ba1\u7406\u5b89\u5168<\/p>\n

    \"Pasted<\/div><\/figure>\n

    \u90a3\u4e0a\u9762\u5c31\u662f\u8ba1\u7b97\u673a\u5b89\u5168\u6027\u539f\u5219\uff0c\u89c6\u9891\u91cc\u9762\u57fa\u672c\u90fd\u5e2e\u6211\u4eec\u9610\u8ff0\u597d\u4e86<\/p>\n\n\n\n\n\n\n\n\n\n
    \u539f\u53e5<\/th>\n\u5bf9\u5e94\u539f\u5219<\/th>\n\u8be5\u600e\u4e48\u8bb0<\/th>\n<\/tr>\n<\/thead>\n
    \u5b89\u5168\u63aa\u65bd\u5e94\u5177\u6709\u7b80\u6d01\u6027<\/td>\n\u7b80\u5355\u6027\u539f\u5219<\/td>\n\u5b89\u5168\u673a\u5236\u8d8a\u7b80\u5355\uff0c\u8d8a\u5bb9\u6613\u9a8c\u8bc1\u3001\u7ef4\u62a4\uff0c\u6f0f\u6d1e\u8d8a\u5c11<\/td>\n<\/tr>\n
    \u4fdd\u62a4\u673a\u5236\u5e94\u8be5\u516c\u5f00<\/td>\n\u516c\u5f00\u8bbe\u8ba1\u539f\u5219<\/td>\n\u5b89\u5168\u4e0d\u80fd\u4f9d\u8d56\u201c\u7b97\u6cd5\u4fdd\u5bc6\u201d\uff0c\u5e94\u4f9d\u8d56\u5bc6\u94a5\u3001\u6743\u9650\u3001\u7b56\u7565<\/td>\n<\/tr>\n
    \u7528\u6237\u548c\u7a0b\u5e8f\u5e94\u4f7f\u7528\u5c3d\u53ef\u80fd\u5c11\u7684\u7279\u6743<\/td>\n\u6700\u5c0f\u7279\u6743\u539f\u5219<\/td>\n\u53ea\u7ed9\u5b8c\u6210\u4efb\u52a1\u6240\u5fc5\u9700\u7684\u6743\u9650<\/td>\n<\/tr>\n
    \u591a\u7528\u6237\u5171\u4eab\u8d44\u6e90\u673a\u5236\u5e94\u6700\u5c0f\u5316<\/td>\n\u6700\u5c0f\u5171\u4eab\u673a\u5236\u539f\u5219<\/td>\n\u5c3d\u91cf\u51cf\u5c11\u7528\u6237\u4e4b\u95f4\u5171\u4eab\u540c\u4e00\u5b89\u5168\u673a\u5236\u6216\u8d44\u6e90\uff0c\u964d\u4f4e\u76f8\u4e92\u5f71\u54cd\u548c\u4fe1\u606f\u6cc4\u9732\u98ce\u9669\uff0c\u5c31\u7c7b\u4f3c\u4e8e\u5b66\u751f\u673a\u623f\u91cc\u9762\u6bcf\u4e2a\u5b66\u751f\u6709\u81ea\u5df1\u7684\u8d26\u53f7\u90a3\u6837\uff0c\u964d\u4f4e\u98ce\u9669<\/td>\n<\/tr>\n
    <\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \"Pasted<\/div><\/figure>\n

    \u90a3\u8fd9\u4e2a\u5176\u5b9e\u5c31\u662f\u5bf9\u5b89\u5168\u673a\u5236\u7684\u62d3\u5c55\u4e86
    \n\u611f\u89c9\u6ca1\u4ec0\u4e48\u597d\u8bf4\u7684\uff08\uff1f<\/p>\n

    \u5185\u9632\u5185\u63a7\u7b56\u7565<\/h3>\n

    \u5185\u9632\u5185\u63a7\u7b56\u7565\u4e3b\u8981\u9488\u5bf9\u5185\u90e8\u7528\u6237\u3001\u5185\u90e8\u7ec8\u7aef\u548c\u5185\u90e8\u7f51\u7edc\u884c\u4e3a<\/strong>\u8fdb\u884c\u5b89\u5168\u7ba1\u7406\uff0c\u9632\u6b62\u5408\u6cd5\u7528\u6237\u5229\u7528\u5408\u6cd5\u8eab\u4efd\u8fdb\u884c\u8d8a\u6743\u8bbf\u95ee\u6216\u8fdd\u89c4\u64cd\u4f5c\u3002<\/p>\n

    \u4e3b\u8981\u63aa\u65bd\u5305\u62ec\uff1a<\/p>\n

      \n
    1. \u7ec8\u7aef\u8bbf\u95ee\u6388\u6743<\/strong><\/li>\n<\/ol>\n

      \u5bf9\u5185\u90e8\u7ec8\u7aef\u548c\u7528\u6237\u8d26\u53f7\u8fdb\u884c\u8eab\u4efd\u8ba4\u8bc1\u4e0e\u6743\u9650\u63a7\u5236\uff0c\u9632\u6b62\u5408\u6cd5\u7ec8\u7aef\u8bbf\u95ee\u672a\u6388\u6743\u8d44\u6e90\u3002<\/p>\n

      \u4f8b\u5b50\uff1a
      \n\u666e\u901a\u5458\u5de5\u53ea\u80fd\u8bbf\u95ee\u81ea\u5df1\u7684\u4e1a\u52a1\u7cfb\u7edf\uff0c\u4e0d\u80fd\u8bbf\u95ee\u8d22\u52a1\u6570\u636e\u5e93\u6216\u7ba1\u7406\u5458\u540e\u53f0\u3002<\/p>\n

        \n
      1. \u7ec8\u7aef\u5b89\u5168\u68c0\u67e5\u4e0e\u7b56\u7565\u7ba1\u7406<\/strong><\/li>\n<\/ol>\n

        \u5bf9\u7ec8\u7aef\u8bbe\u5907\u8fdb\u884c\u5b89\u5168\u68c0\u67e5\uff0c\u786e\u4fdd\u8bbe\u5907\u7b26\u5408\u5b89\u5168\u8981\u6c42\u3002<\/p>\n

        \u4f8b\u5b50\uff1a
        \n\u68c0\u67e5\u7535\u8111\u662f\u5426\u5b89\u88c5\u6740\u6bd2\u8f6f\u4ef6\u3001\u662f\u5426\u6253\u7cfb\u7edf\u8865\u4e01\u3001\u662f\u5426\u4f7f\u7528\u5f31\u53e3\u4ee4\u3001\u662f\u5426\u79c1\u81ea\u5b89\u88c5\u8fdd\u89c4\u8f6f\u4ef6\u3002<\/p>\n

          \n
        1. \u4e0a\u7f51\u884c\u4e3a\u7ba1\u7406\u4e0e\u8fdd\u89c4\u5ba1\u8ba1<\/strong><\/li>\n<\/ol>\n

          \u5bf9\u5458\u5de5\u8bbf\u95ee\u7f51\u7ad9\u3001\u4e0b\u8f7d\u6587\u4ef6\u3001\u767b\u5f55\u7cfb\u7edf\u3001\u5bfc\u51fa\u6570\u636e\u7b49\u884c\u4e3a\u8fdb\u884c\u8bb0\u5f55\u548c\u5ba1\u8ba1\u3002<\/p>\n

          \u4f8b\u5b50\uff1a
          \n\u5458\u5de5\u5927\u91cf\u4e0b\u8f7d\u5ba2\u6237\u8d44\u6599\uff0c\u7cfb\u7edf\u8bb0\u5f55\u5176\u8d26\u53f7\u3001\u65f6\u95f4\u3001IP\u3001\u8bbf\u95ee\u5185\u5bb9\uff0c\u65b9\u4fbf\u4e8b\u540e\u8ffd\u8d23\u3002<\/p>\n

          \u7b80\u5355\u6765\u8bb0\u7684\u8bdd\u5c31\u662f
          \n\u5185\u9632\u5185\u63a7\u7b56\u7565\u662f\u5bf9\u5185\u90e8\u7ec8\u7aef\u3001\u5185\u90e8\u7528\u6237\u548c\u5185\u90e8\u8bbf\u95ee\u884c\u4e3a\u8fdb\u884c\u6388\u6743\u3001\u68c0\u67e5\u3001\u7ba1\u7406\u548c\u5ba1\u8ba1\uff0c\u9632\u6b62\u5185\u90e8\u8d8a\u6743\u8bbf\u95ee\u548c\u8fdd\u89c4\u64cd\u4f5c<\/p>\n

          \u7f51\u8def\u653b\u51fb<\/h2>\n
          \"Pasted<\/div><\/figure>\n

          OK\u554a\u90a3\u4e48\u6765\u5230\u7f51\u7edc\u653b\u51fb\u8fd9\u4e00\u7ae0<\/p>\n

          \u5206\u7c7b\u7684\u8bdd\u5c31\u662f\u53ef\u4ee5\u5206\u6210\u88ab\u52a8\u653b\u51fb\u548c\u4e3b\u52a8\u653b\u51fb\u4fe9\u79cd<\/p>\n

          \u88ab\u52a8\u653b\u51fb\u7684\u8bdd\u5927\u6982\u53ef\u4ee5\u7406\u89e3\u4e3a\u6211\u5c31\u5750\u5728\u90a3\u91cc\u4e0d\u52a8\uff0c\u4f60\u7684\u6570\u636e\u8fc7\u6765\u6211\u5c31\u53ef\u4ee5\u8fdb\u884c\u653b\u51fb\uff0c\u5c31\u50cf\u56fe\u4e2d\u7684\u622a\u83b7\u6570\u636e\u8fdb\u884c\u7a83\u542c\uff0c\u4e00\u822c\u90fd\u662f\u7528wireshark\u4e4b\u7c7b\u7684\u6765\u6293\u5305\u8fdb\u884c\u6d41\u91cf\u5206\u6790\u5427\uff0c\u4e3b\u8981\u7528\u6765\u6cc4\u9732\u4fe1\u606f\uff0c\u7834\u574f\u4fdd\u5bc6\u6027\uff0c\u7b80\u800c\u8a00\u4e4b\u5c31\u662f\u5077\u770b\u5566\uff0c\u800c\u4e14\u4e0d\u4f1a\u5f71\u54cd\u901a\u4fe1\u8fc7\u7a0b\uff0c\u6bd4\u8f83\u96be\u88ab\u53d1\u73b0\uff0c\u7136\u540e\u88ab\u52a8\u653b\u51fb\u4e0d\u4f1a\u5bf9\u6570\u636e\u4ea4\u6d41\u9020\u6210\u635f\u5931\u7b49<\/p>\n

          \u90a3\u4e3b\u52a8\u653b\u51fb\u6211\u4eec\u5c31\u5f88\u719f\u6089\u4e86\u54c8
          \n\u7be1\u6539\u5c31\u662f\u622a\u65ad\u6211\u4eec\u7684\u6570\u636e\u5305\u5bf9\u6570\u636e\u5185\u5bb9\u8fdb\u884c\u7be1\u6539\uff0c\u6bd4\u5982\u5bf9\u4f20\u8f93\u4e2d\u7684\u6570\u636e\u8fdb\u884c\u4fee\u6539\uff0c\u63d2\u5165\uff0c\u5220\u9664\u6216\u4f2a\u9020\uff0c\u4f7f\u63a5\u53d7\u65b9\u6536\u5230\u9519\u8bef\u4fe1\u606f
          \n\u6076\u610f\u7a0b\u5e8f\u5c31\u662f\u7c7b\u4f3c\u75c5\u6bd2\u6728\u9a6c\u7b49\uff0c\u6728\u9a6c\u901a\u5e38\u5177\u6709\u4f2a\u88c5\u6027\u548c\u9690\u853d\u6027\uff0c\u4e3b\u8981\u7528\u4e8e\u975e\u6cd5\u63a7\u5236\u4e3b\u673a\u3001\u7a83\u53d6\u4fe1\u606f\u6216\u6253\u5f00\u540e\u95e8
          \n\u5c55\u5f00\u6765\u8bf4\u7684\u8bdd\u5c31\u662f<\/p>\n\n\n\n\n\n\n\n\n\n\n
          \u7c7b\u578b<\/th>\n\u7279\u70b9<\/th>\n<\/tr>\n<\/thead>\n
          \u75c5\u6bd2<\/td>\n\u4f9d\u9644\u5728\u5176\u4ed6\u7a0b\u5e8f\u4e0a\uff0c\u80fd\u591f\u81ea\u6211\u590d\u5236\u548c\u4f20\u64ad<\/td>\n<\/tr>\n
          \u8815\u866b<\/td>\n\u53ef\u4ee5\u901a\u8fc7\u7f51\u7edc\u4e3b\u52a8\u4f20\u64ad\uff0c\u4e0d\u4e00\u5b9a\u4f9d\u9644\u5bbf\u4e3b\u7a0b\u5e8f<\/td>\n<\/tr>\n
          \u6728\u9a6c<\/td>\n\u4f2a\u88c5\u6210\u6b63\u5e38\u7a0b\u5e8f\uff0c\u8bf1\u5bfc\u7528\u6237\u8fd0\u884c\uff0c\u6697\u4e2d\u7a83\u53d6\u4fe1\u606f\u6216\u63a7\u5236\u7cfb\u7edf<\/td>\n<\/tr>\n
          \u540e\u95e8<\/td>\n\u7ed5\u8fc7\u6b63\u5e38\u8ba4\u8bc1\u673a\u5236\uff0c\u7ed9\u653b\u51fb\u8005\u7559\u4e0b\u8fdc\u7a0b\u63a7\u5236\u5165\u53e3<\/td>\n<\/tr>\n
          \u95f4\u8c0d\u8f6f\u4ef6<\/td>\n\u5077\u5077\u6536\u96c6\u7528\u6237\u4fe1\u606f\u3001\u8d26\u53f7\u3001\u5bc6\u7801\u3001\u884c\u4e3a\u8bb0\u5f55<\/td>\n<\/tr>\n
          \u52d2\u7d22\u8f6f\u4ef6<\/td>\n\u52a0\u5bc6\u7528\u6237\u6587\u4ef6\uff0c\u7136\u540e\u7d22\u8981\u8d4e\u91d1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          \u62d2\u7edd\u670d\u52a1\u5c31\u662f\u6211\u4eec\u6bd4\u8f83\u719f\u6089\u7684DOS\u4e86\uff0cDDOS\u5c31\u662f\u5206\u5e03\u5f0f\u62d2\u7edd\u670d\u52a1\uff0c\u4e00\u822c\u5c31\u662f\u7528\u8089\u9e21\u5bf9\u76ee\u6807\u7ad9\u8fdb\u884c\u5927\u91cf\u7684\u8bf7\u6c42\u7533\u8bf7\u4ece\u800c\u538b\u529b\u4ed6\u7684\u670d\u52a1\u5668\u8ba9\u76ee\u6807\u670d\u52a1\u5668\u762b\u75ea\uff0c\u800cDRDos\u662f\u5206\u5e03\u5f0f\u53cd\u5c04\u62d2\u7edd\u670d\u52a1\u653b\u51fb\uff0c\u5c31\u662f\u653b\u51fb\u8005\u4f2a\u9020\u53d7\u5bb3\u8005IP\u72e0\u72e0\u5730\u5411\u7b2c\u4e09\u65b9\u53d1\u9001\u8bf7\u6c42\uff0c\u7b2c\u4e09\u65b9\u628a\u54cd\u5e94\u6d41\u91cf\u53cd\u5c04\u7ed9\u53d7\u5bb3\u8005\uff0c\u4ece\u800c\u9020\u6210\u653b\u51fb\u6d41\u91cf\u5730\u653e\u5927<\/p>\n

          \u91cd\u653e\u653b\u51fb\u662f\u653b\u51fb\u8005\u622a\u83b7\u4e00\u6b21\u5408\u6cd5\u901a\u4fe1\u6570\u636e\uff0c\u7136\u540e\u5728\u4e4b\u540e\u91cd\u65b0\u53d1\u9001\u8be5\u6570\u636e\uff0c\u4f7f\u7cfb\u7edf\u8bef\u4ee5\u4e3a\u8fd9\u662f\u5408\u6cd5\u8bf7\u6c42\uff0c\u6570\u636e\u5185\u5bb9\u53ef\u4ee5\u5305\u62ec\u767b\u9646\u8ba4\u8bc1\u62a5\u6587\uff0c\u4f1a\u8bdd\u4ee4\u724ctoken\uff0c\u8f6c\u8d26\u8bf7\u6c42\u7b49
          \n\u5b9e\u9645\u60c5\u51b5\u7684\u8bdd\u5c31\u662f\u5728\u8f6c\u8d26\u4e2d\u53ef\u4ee5\u9047\u89c1\uff0c\u6bd4\u5982\u5411\u67d0\u67d0\u4eba\u8f6c100\u5757\uff0c\u88ab\u91cd\u653e\u4e86\u4f60\u53ef\u80fd\u5c31\u7834\u4ea7\u4e86<\/p>\n

          \"Pasted<\/div><\/figure>\n

          \u7136\u540e\u4e0b\u9762\u8fd9\u4e9b\u6211\u66f4\u719f\u6089\u4e86\u5440\uff08\u6211\u662f\u826f\u6c11<\/p>\n

          \u871c\u7f50\u5c31\u662f\u8ba9\u4e00\u4e2a\u770b\u8d77\u6765\u8106\u5f31\u4e0d\u582a\u4f46\u4e5f\u770b\u8d77\u6765\u771f\u5b9e\u7684\u7cfb\u7edf\u6765\u8bf1\u60d1\u653b\u51fb\u8005\u4ece\u800c\u8bb0\u5f55\u653b\u51fb\u884c\u4e3a\uff0c\u5206\u6790\u653b\u51fb\u65b9\u5f0f\uff0c\u4fdd\u62a4\u771f\u5b9e\u7684\u670d\u52a1\u5668\uff0c\u8bf1\u6355\u653b\u51fb\u8005\uff0c\u5c31\u662f\u5356\u4e2a\u7834\u7efd<\/p>\n

          SQL\u6ce8\u5165\u7684\u8bdd\uff0c\u6211\u9047\u5230\u8fc7\u7684\u5c31\u662f\u5728\u8f93\u5165\u8868\u5355\u91cc\u9762\u586b\u5199SQL\u8bed\u53e5\u6216\u8005\u5224\u65ad\u8bed\u53e5\u7b49\uff0c\u6bd4\u5982\u7528\u6237\u767b\u9646\u65f6\u8f93\u51651 or 1\uff0c\u90a3\u4e48\u7a0b\u5e8f\u903b\u8f91\u7684while\u5c31\u4f1a\u56e0\u4e3auser=1\u5224\u65ad\u4e3a\u771f\u7ed9\u653e\u884c\u4e86
          \nXSS\u653b\u51fb\u5c31\u662f\u628a\u6076\u610f\u811a\u672c\u63d2\u5165\u7f51\u9875\u4e2d\uff0c\u5f53\u5176\u4ed6\u7528\u6237\u8bbf\u95ee\u8be5\u7f51\u9875\u65f6\uff0c\u811a\u672c\u5c31\u5728\u7528\u6237\u6d4f\u89c8\u5668\u91cc\u9762\u8fd0\u884c\uff0c\u4ed6\u548cSQL\u6ce8\u5165\u7684\u533a\u522b\u5c31\u5728\u4e8e\uff0cSQL\u662f\u5bf9\u540e\u7aef\u67e5\u8be2\u7684\u4f4d\u7f6e\u8fdb\u884c\u653b\u51fb\uff0c\u76ee\u6807\u662f\u6570\u636e\u5e93\uff0c\u800cXSS\u662f\u5bf9\u524d\u7aef\u9875\u9762\u690d\u5165\u811a\u672c\uff0c\u76ee\u6807\u662f\u7528\u6237\u6d4f\u89c8\u5668\u548c\u4f1a\u8bdd\u4fe1\u606f<\/p>\n

          \u66b4\u529b\u7834\u89e3\u5c31\u662f\u7a77\u4e3e\u561b\uff0c\u4ec0\u4e48\u53ef\u80fd\u7684\u90fd\u585e\u8fdb\u53bb\uff0c\u90a3\u5b57\u5178\u653b\u51fb\u5c31\u662f\u628a\u5e38\u89c1\u7684\u7ec4\u5408\u690d\u5165\u811a\u672c\u7136\u540e\u6328\u4e2a\u5c1d\u8bd5\uff0c\u5e38\u89c1\u7684\u9884\u9632\u624b\u6bb5\u5c31\u662f\u56fe\u5f62\u9a8c\u8bc1\u7801\u6216\u8005\u51b7\u5374\u65f6\u95f4
          \n\u7ec4\u5408\u7834\u89e3\u5c31\u662f\u5728\u5b57\u5178\u653b\u51fb\u7684\u57fa\u7840\u4e0a\u5bf9\u5e38\u89c1\u8bcd\u8fdb\u884c\u7ec4\u5408\uff0c\u53d8\u5f62\u548c\u62fc\u63a5<\/p>\n

          \u793e\u4f1a\u5de5\u7a0b\u5b66\u5c31\u662f\u72e0\u72e0\u653b\u51fb\u4eba\u6027\u5f31\u70b9\uff0c\u6bd4\u5982\u4f60\u8981\u53bb\u5927\u89c4\u6a21\u653b\u51fb\u67d0\u4e2a\u516c\u53f8\u4f60\u5c31\u8d3f\u8d42\u4ed6\u4eec\u4fdd\u5b89\u665a\u4e0a\u7ed9\u516c\u53f8\u65ad\u7535\uff0c\u8fd9\u5c31\u7b97\u793e\u5de5\u7684\u4e00\u79cd\uff0c\u6ce8\u91cd\u4e8e\u5bf9\u4eba\u7684\u653b\u51fb\uff0c\u6700\u6709\u6548\u4e14\u6536\u76ca\u6700\u5927\u7684\u624b\u6bb5\u554a<\/p>\n

          \u90a3\u6f0f\u6d1e\u626b\u63cf\u5c31\u662f\u811a\u672c\u5c0f\u5b50\u62ff\u90a3\u51e0\u4e2a\u5e38\u7528\u5de5\u5177\u628a\u8fdc\u7a0b\u76ee\u6807\u4e3b\u673a\u7684\u5e38\u89c1\u6f0f\u6d1e\u90fd\u626b\u4e00\u904d\u7136\u540e\u627e\u6f0f\u6d1e\u8fdb\u884c\u653b\u51fb\uff0c\u4e0d\u8fc7\u6f0f\u6d1e\u68c0\u6d4b\u672c\u8eab\u4e5f\u662f\u5408\u6cd5\u7684\u5b89\u5168\u68c0\u6d4b\u624b\u6bb5<\/p>\n

          \u8ba1\u7b97\u673a\u75c5\u6bd2\u4e0e\u6728\u9a6c<\/h2>\n
          \"Pasted<\/div><\/figure>\n

          OK\uff0c\u7136\u540e\u6211\u4eec\u6765\u8c08\u8c08\u8ba1\u7b97\u673a\u75c5\u6bd2\u4e0e\u6728\u9a6c<\/p>\n

          \u597d\u50cf\u5185\u5bb9\u4e5f\u6ca1\u591a\u5c11\u6211\u4eec\u5c3d\u5feb\u6982\u62ec\u4e00\u4e0b\u5427<\/p>\n

          \u9996\u5148\u662f\u75c5\u6bd2\uff0c\u4ed6\u4f1a\u76f4\u63a5\uff0c\u5373\u65f6\u5730\u7834\u574f\u6211\u4eec\u8ba1\u7b97\u673a\uff0c\u6bd4\u5982\u4f1a\u8ba9\u6211\u4eec\u7684\u7a0b\u5e8f\u5d29\u6e83\uff0c\u6216\u8005\u7535\u8111\u9ed1\u5c4f\u7b49\u7b49
          \n\u5b83\u5177\u6709\u4f20\u67d3\u6027\u3001\u81ea\u6211\u590d\u5236\u80fd\u529b\uff0c\u4f9d\u9644\u5728\u7a0b\u5e8f\u3001\u6587\u4ef6\u6216\u5f15\u5bfc\u533a\u4e2d\uff0c\u8fd0\u884c\u540e\u4f20\u64ad\u5e76\u53ef\u80fd\u7834\u574f\u7cfb\u7edf\u6216\u6570\u636e<\/p>\n

          \u90a3\u6728\u9a6c\u5c31\u662f\u690d\u5165\u6211\u4eec\u7684\u7535\u8111\u4e2d\u7a83\u53d6\u6570\u636e\u7684\uff0c\u9759\u9ed8\u7684\uff0c\u53ef\u957f\u671f\u7559\u5b58\u7684\uff0c\u6728\u9a6c\u901a\u5e38\u4f2a\u88c5\u6210\u6b63\u5e38\u7a0b\u5e8f\uff0c\u8bf1\u4f7f\u7528\u6237\u8fd0\u884c\u6216\u88ab\u653b\u51fb\u8005\u690d\u5165\u7cfb\u7edf\u4e2d\uff0c\u968f\u540e\u9690\u85cf\u8fd0\u884c\uff0c\u7528\u4e8e\u7a83\u53d6\u4fe1\u606f\u3001\u8fdc\u7a0b\u63a7\u5236\u3001\u5efa\u7acb\u540e\u95e8\u6216\u4e0b\u8f7d\u5176\u4ed6\u6076\u610f\u7a0b\u5e8f
          \n\u5178\u578b\u573a\u666f\u662f\u653b\u51fb\u8005\u63a7\u5236\u7aef\u4e0e\u53d7\u5bb3\u4e3b\u673a\u4e0a\u7684\u6728\u9a6c\u7a0b\u5e8f\u5efa\u7acb\u901a\u4fe1\uff0c\u4ece\u800c\u5b9e\u73b0\u8fdc\u7a0b\u63a7\u5236\u3001\u4fe1\u606f\u7a83\u53d6\u7b49\u64cd\u4f5c<\/p>\n

          \u4fe1\u606f\u5b89\u5168\u7684\u5b9e\u73b0\u6280\u672f01<\/h2>\n
          \"Pasted<\/div><\/figure>\n

          \u8fd9\u4e00\u7ae0\u7a0d\u5fae\u6709\u70b9\u957f<\/p>\n

          \u9996\u5148\u662f\u5bf9\u79f0\u52a0\u5bc6\u6280\u672f
          \n\u7b80\u5355\u63cf\u8ff0\u7684\u8bdd\u5c31\u662fA\uff0cB\u4fe9\u4e2a\u7aef\u4ea4\u6d41\u7684\u8bdd\uff0c\u6211\u4eecA\u7aef\u53d1\u9001\u4fe1\u606f\u7528\u8fd9\u4e2a\u5bc6\u94a5\u52a0\u5bc6\uff0c\u6211\u4eecB\u7aef\u89e3\u8bfb\u4fe1\u606f\u7528\u8fd9\u4e2a\u5bc6\u94a5\u89e3\u5bc6\u8bfb\u53d6\u660e\u6587<\/p>\n

          \u90a3\u8fd9\u4e2a\u52a0\u5bc6\u6280\u672f\u6709\u6548\u7387\u9ad8\uff0c\u901f\u5ea6\u5feb\uff0c\u9002\u5408\u5bf9\u4e8e\u5927\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u7684\u7279\u70b9\uff0c\u4f46\u540c\u65f6\u4e5f\u9762\u4e34\u5bc6\u94a5\u5206\u53d1\u82e6\u96be\u7684\u95ee\u9898\uff08\u56e0\u4e3a\u8fd9\u6837\u505a\u5c31\u7b49\u4e8e\u4f60\u8981\u9488\u5bf9\u6bcf\u4e00\u4e2a\u5ba2\u6237\u521b\u5efa\u4e00\u4e2a\u5bc6\u94a5\u5e76\u70b9\u5bf9\u70b9\u5206\u53d1\uff0c\u8fdc\u6ca1\u6709\u975e\u5bf9\u79f0\u52a0\u5bc6\u7684\u4e00\u65b9\u6709\u516c\u94a5\u6765\u7684\u7b80\u4fbf\u9ad8\u6548\uff09<\/p>\n

          \u7136\u540e\u4e0a\u9762\u8fd9\u4e9b\u52a0\u5bc6\u7b97\u6cd5\u662f\u9700\u8981\u8bb0\u4f4f\u7684
          \n\u7b80\u5355\u8bb0\u4e00\u8bb0\u540d\u5b57\u5c31\u884c\u4e86\u4e0d\u662f\u5f88\u9700\u8981\u8be6\u7ec6\u4e86\u89e3\u5185\u6838
          \n\u7136\u540e\u8fd9\u91cc\u7684AES\u662f\u6709\u70b9\u66ff\u4ee3DES\u7684\u611f\u89c9\uff0c\u8f6f\u8003\u7ecf\u5e38\u8003<\/p>\n

          \u5982\u679c\u6709 n \u4e2a\u7528\u6237\u4e24\u4e24\u5b89\u5168\u901a\u4fe1\uff0c\u5bf9\u79f0\u52a0\u5bc6\u7406\u8bba\u4e0a\u9700\u8981\uff1a<\/p>\n

          \n

          n \u00d7 (n \u2212 1) \/ 2 \u4e2a\u5bc6\u94a5<\/p>\n<\/blockquote>\n

          \u56e0\u4e3a\u6bcf\u4e24\u4e2a\u7528\u6237\u4e4b\u95f4\u90fd\u8981\u6709\u4e00\u628a\u5171\u4eab\u5bc6\u94a5<\/p>\n

          \"Pasted<\/div><\/figure>\n

          \u90a3\u5bf9\u5e94\u7684\u6211\u4eec\u4e5f\u6709\u975e\u5bf9\u79f0\u52a0\u5bc6<\/p>\n

          \u6d41\u7a0b\u4e00\u822c\u5c31\u662f
          \nA \u60f3\u7ed9 B \u53d1\u9001\u673a\u5bc6\u6570\u636e
          \n \u2193
          \nA \u4f7f\u7528 B \u7684\u516c\u94a5\u52a0\u5bc6
          \n \u2193
          \n\u5bc6\u6587\u4f20\u7ed9 B
          \n \u2193
          \nB \u4f7f\u7528 B \u81ea\u5df1\u7684\u79c1\u94a5\u89e3\u5bc6
          \n \u2193
          \n\u5f97\u5230\u660e\u6587<\/p>\n

          \u4e5f\u5c31\u662f\u53d1\u9001\u65b9\u7528\u63a5\u53d7\u65b9\u7684\u516c\u94a5\u52a0\u5bc6\uff0c\u63a5\u53d7\u65b9\u7528\u81ea\u5df1\u7684\u79c1\u94a5\u89e3\u5bc6\u8fd9\u6837\u5b50<\/p>\n

          \u975e\u5bf9\u79f0\u52a0\u5bc6<\/strong>\uff1a\u6bcf\u4e2a\u7528\u6237\u62e5\u6709\u4e00\u5bf9\u5bc6\u94a5\uff0c\u5373\u516c\u94a5\u548c\u79c1\u94a5\u3002\u516c\u94a5\u53ef\u4ee5\u516c\u5f00\uff0c\u79c1\u94a5\u53ea\u80fd\u7531\u672c\u4eba\u4fdd\u5b58\u3002\u7528\u516c\u94a5\u52a0\u5bc6\u7684\u6570\u636e\u53ea\u80fd\u7528\u5bf9\u5e94\u79c1\u94a5\u89e3\u5bc6\u3002\u516c\u94a5\u548c\u79c1\u94a5\u6210\u5bf9\u51fa\u73b0\uff0c\u867d\u7136\u4e8c\u8005\u5b58\u5728\u6570\u5b66\u5173\u7cfb\uff0c\u4f46\u4ece\u516c\u94a5\u63a8\u51fa\u79c1\u94a5\u5728\u8ba1\u7b97\u4e0a\u4e0d\u53ef\u884c\u3002<\/p>\n

          \"Pasted<\/div><\/figure>\n

          \u63a5\u4e0b\u6765\u662f\u6570\u5b57\u4fe1\u5c01\u7684\u5185\u5bb9<\/p>\n

          \u8fd9\u91cc\u6d41\u7a0b\u5c31\u662f
          \n\u53d1\u9001\u65b9A\u5c06\u62a5\u6587X\u52a0\u5bc6\uff0c\u83b7\u5f97\u5bf9\u79f0\u5bc6\u94a5K\uff0c\u7ecf\u8fc7\u63a5\u6536\u65b9B\u7684\u516c\u94a5\u52a0\u5bc6\u540e\u83b7\u5f97\u5bc6\u6587K\uff0c\u5bc6\u6587K\u548c\u5bc6\u6587X\u7ec4\u5408\u540e\u53d1\u9001\u7ed9B\uff0cB\u5728\u83b7\u53d6\u540e\u901a\u8fc7\u81ea\u5df1\u7684\u79c1\u94a5\u89e3\u5bc6\u5185\u5bb9\u83b7\u5f97\u5bf9\u79f0\u5bc6\u94a5\u52a0\u5bc6\u540e\u7684\u5185\u5bb9\uff0c\u5728\u901a\u8fc7\u53cc\u65b9\u5171\u540c\u6301\u6709\u7684\u5bc6\u94a5\u89e3\u5bc6\u5185\u5bb9\u83b7\u5f97\u660e\u6587\u62a5\u6587X<\/p>\n

          \u6d41\u7a0b\u5c31\u662f<\/p>\n

          A \u751f\u6210\u4e00\u4e2a\u968f\u673a\u5bf9\u79f0\u5bc6\u94a5 K
          \n \u2193
          \nA \u7528 K \u52a0\u5bc6\u62a5\u6587 X\uff0c\u5f97\u5230\u62a5\u6587\u5bc6\u6587 C
          \n \u2193
          \nA \u7528 B \u7684\u516c\u94a5 PKB \u52a0\u5bc6 K\uff0c\u5f97\u5230\u52a0\u5bc6\u540e\u7684\u5bc6\u94a5 EK
          \n \u2193
          \nA \u628a C \u548c EK \u4e00\u8d77\u53d1\u9001\u7ed9 B
          \n \u2193
          \nB \u7528\u81ea\u5df1\u7684\u79c1\u94a5 SKB \u89e3\u5bc6 EK\uff0c\u5f97\u5230 K
          \n \u2193
          \nB \u7528 K \u89e3\u5bc6 C\uff0c\u6062\u590d\u51fa\u62a5\u6587 X<\/p>\n

          \u653b\u51fb\u8005\u5373\u4f7f\u622a\u83b7\u4e86\u62a5\u6587\u5bc6\u6587 C \u548c\u52a0\u5bc6\u540e\u7684\u5bc6\u94a5 EK\uff0c\u4e5f\u65e0\u6cd5\u5f97\u5230\u660e\u6587\uff0c\u56e0\u4e3a\u653b\u51fb\u8005\u65e0\u6cd5\u7528 B \u7684\u79c1\u94a5\u89e3\u5f00 EK\uff0c\u4e5f\u5c31\u65e0\u6cd5\u83b7\u5f97\u5bf9\u79f0\u5bc6\u94a5 K<\/p>\n

          \u603b\u800c\u8a00\u4e4b\u5c31\u662f\u5bf9\u79f0\uff0b\u975e\u5bf9\u79f0\u7ec4\u6210\u7684\u4e8c\u91cd\u4fdd\u62a4\u673a\u5236<\/p>\n

          \"Pasted<\/div><\/figure>\n

          \u90a3\u63a5\u4e0b\u6765\u5c31\u662f\u6570\u5b57\u7b7e\u540d
          \n\u8fd9\u7b97\u662f\u4e00\u79cd\u9632\u62b5\u8d56\u673a\u5236\u5427<\/p>\n

          \u57fa\u672c\u6d41\u7a0b\u5c31\u662fA\u7528\u81ea\u5df1\u7684\u79c1\u94a5\u52a0\u5bc6\u660e\u6587\u5f97\u5230\u5bc6\u6587\uff08\u5373\u7b7e\u540d\uff09\uff0cB\u6536\u5230\u5bc6\u6587\u540e\u7528A\u7684\u516c\u94a5\u89e3\u5bc6\u5f97\u5230\u660e\u6587\uff08\u5373\u6838\u5b9e\u7b7e\u540d\uff09
          \n\u4e3a\u4ec0\u4e48\u8bf4\u9632\u62b5\u8d56\u5462\uff0c\u56e0\u4e3a\u6211B\u5728\u6536\u5230\u4fe1\u606f\u540e\uff0c\u5982\u679c\u80fd\u7528\u4f60A\u7684\u516c\u94a5\u89e3\u5bc6\u5185\u5bb9\uff0c\u5c31\u8bf4\u660e\u8fd9\u73a9\u610f\u662f\u4f60A\u53d1\u7684\uff0c\u72ec\u4e00\u65e0\u4e8c\u7684
          \n\u90a3\u4e48B\u4e5f\u4e0d\u80fd\u4f2a\u9020\u4fe1\u606f\u5185\u5bb9<\/p>\n

          \u4f46\u6570\u5b57\u7b7e\u540d\u8fd9\u9879\u6280\u672f\u5b89\u5168\u6027\u8fc7\u4f4e\uff0c\u56e0\u4e3a\u9ed1\u5ba2\u53ef\u4ee5\u76f4\u63a5\u622a\u83b7\u6570\u636e\u7136\u540e\u7528A\u7684\u516c\u94a5\u76f4\u63a5\u622a\u83b7\u660e\u6587<\/p>\n

          \"Pasted<\/div><\/figure>\n

          \u90a3\u4e48\u4e5f\u5c31\u6709\u4e86\u6211\u4eec\u7684\u5177\u6709\u4fdd\u5bc6\u6027\u7684\u6570\u5b57\u7b7e\u540d
          \n\u5728\u666e\u901a\u6570\u5b57\u7b7e\u540d\u7684\u57fa\u7840\u4e0a\uff0c\u53c8\u4f7f\u7528\u4e86\u63a5\u6536\u65b9 B \u7684\u516c\u94a5\u548c\u79c1\u94a5\u6765\u8fdb\u884c\u52a0\u5bc6\u4e0e\u89e3\u5bc6<\/p>\n

          \u6d41\u7a0b\u5927\u6982\u5c31\u662f<\/p>\n

          A \u7528\u81ea\u5df1\u7684\u79c1\u94a5 SKA \u5bf9\u62a5\u6587 X \u8fdb\u884c\u7b7e\u540d
          \n \u2193
          \n\u5f97\u5230\u7b7e\u540d\u540e\u7684\u6570\u636e DSKA(X)
          \n \u2193
          \nA \u7528 B \u7684\u516c\u94a5 PKB \u5bf9\u7b7e\u540d\u540e\u7684\u6570\u636e\u52a0\u5bc6
          \n \u2193
          \n\u5f97\u5230\u5bc6\u6587 EPKB(DSKA(X))
          \n \u2193
          \n\u53d1\u9001\u7ed9 B
          \n \u2193
          \nB \u7528\u81ea\u5df1\u7684\u79c1\u94a5 SKB \u89e3\u5bc6
          \n \u2193
          \n\u5f97\u5230 DSKA(X)
          \n \u2193
          \nB \u7528 A \u7684\u516c\u94a5 PKA \u9a8c\u8bc1\u7b7e\u540d
          \n \u2193
          \n\u6062\u590d\u5e76\u786e\u8ba4\u62a5\u6587 X<\/p>\n

          \u8fd9\u53ef\u4ee5\u4fdd\u8bc1\u6211\u4eecB\u5728\u63a5\u6536\u5bc6\u6587\u65f6\u53ef\u4ee5\u7528\u81ea\u5df1\u7684\u79c1\u94a5\u89e3\u5bc6\u7b2c\u4e00\u5c42\u4fdd\u62a4\u6570\u636e\uff0c\u4ece\u800c\u9632\u6b62\u88ab\u9ed1\u5ba2\u622a\u83b7\u76f4\u63a5\u89e3\u5bc6\u5bc6\u6587<\/p>\n

          \"Pasted<\/div><\/figure>\n

          OK\u7136\u540e\u63a5\u4e0b\u6765\u65f6\u6d88\u606f\u6458\u8981\uff0c\u8fd9\u5176\u5b9e\u662f\u4e00\u79cd\u68c0\u6d4b\u6211\u4eec\u62a5\u6587\u662f\u5426\u88ab\u7be1\u6539\u7684\u6280\u672f<\/p>\n

          \u6d41\u7a0b\u5c31\u662f\u62a5\u6587\u901a\u8fc7\u6458\u8981\u7b97\u6cd5\u5f97\u5230\u62a5\u6587\u6458\u8981\uff0c\u7136\u540e\u518d\u901a\u8fc7\u53d1\u9001\u65b9\u7684\u79c1\u94a5\u52a0\u5bc6\u5f97\u5230\u8bc6\u522b\u7801\uff0c\u518d\u5c06\u8bc6\u522b\u7801\u548c\u62a5\u6587\u5185\u5bb9\u53d1\u9001\u7ed9B
          \nB\u901a\u8fc7A\u7684\u516c\u94a5\u89e3\u5bc6\u8bc6\u522b\u7801\u5185\u5bb9\uff0c\u518d\u901a\u8fc7\u4e0eA\u76f8\u540c\u7684\u6458\u8981\u7b97\u6cd5\u5bf9\u83b7\u5f97\u7684\u660e\u6587\u5185\u5bb9\u8fdb\u884c\u5904\u7406\uff0c\u6700\u540e\u5c06\u6211\u4eec\u89e3\u5bc6\u8bc6\u522b\u7801\u5f97\u5230\u7684\u7ed3\u679c\u548c\u6211\u672c\u5730\u5904\u7406\u5f97\u5230\u7684\u62a5\u6587\u6458\u8981\u8fdb\u884c\u5bf9\u6bd4
          \n\u5982\u679c\u76f8\u540c\u5c31\u8bf4\u660e\u6ca1\u88ab\u7be1\u6539\uff0c\u53cd\u4e4b\u5219\u88ab\u7be1\u6539\u8fc7\u4e86<\/p>\n

          \u5f53\u7136\uff0c\u5355\u72ec\u7684\u6d88\u606f\u6458\u8981\u53ea\u80fd\u68c0\u6d4b\u5b8c\u6574\u6027\uff0c\u4e0d\u80fd\u8bc1\u660e\u662f\u8c01\u53d1\u7684<\/p>\n

          \u5e38\u89c1\u6458\u8981\u7b97\u6cd5\u6709<\/p>\n\n\n\n\n\n\n\n
          \u7b97\u6cd5<\/th>\n\u6458\u8981\u957f\u5ea6<\/th>\n<\/tr>\n<\/thead>\n
          MD5<\/td>\n128 \u4f4d<\/td>\n<\/tr>\n
          SHA-1<\/td>\n160 \u4f4d<\/td>\n<\/tr>\n
          SHA-256<\/td>\n256 \u4f4d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          \u8fd9\u8fb9\u8bf4\u4e00\u4e0b\u8fd9\u4e2a\u62a5\u6587\u6458\u8981\u8fd0\u7b97
          \n\u4ed6\u5c31\u7c7b\u4f3c\u4e00\u4e2a\u51fd\u6570\uff0c\u54c8\u5e0c\u51fd\u6570\uff0c\u7531\u591a\u4e2a\u53d8\u91cf\u7ec4\u6210\uff0c\u6bd4\u5982f(x)=x+1\/2*x^2 \u8fd9\u79cd\uff0c\u6bd4\u5982\u6211\u8f93\u5165\u4e00\u4e2a2\u8fdb\u53bb\uff0c\u90a3\u4e48\u4f60\u53ea\u80fd\u5f97\u52303\uff0c\u4f46\u6211\u5982\u679c\u53ea\u629b\u7ed9\u4f60\u4e00\u4e2a3\u4f60\u6839\u672c\u4e0d\u77e5\u9053x\u662f\u591a\u5c11\uff0c\u6240\u4ee5\u62a5\u6587\u6458\u8981\u540e\u7684\u5185\u5bb9\u662f\u6ca1\u529e\u6cd5\u53cd\u63a8\u660e\u6587\u7684<\/p>\n

          \"Pasted<\/div><\/figure>\n
          \"Pasted<\/div><\/figure>\n

          \u63a5\u4e0b\u6765\u662f\u8fd9\u4e2a\u6570\u5b57\u8bc1\u4e66<\/p>\n

          \u6570\u5b57\u8bc1\u4e66\u7531 CA \u8ba4\u8bc1\u673a\u6784\u7b7e\u53d1\u3002CA \u4f1a\u628a\u7528\u6237\u8eab\u4efd\u4fe1\u606f\u3001\u516c\u94a5\u3001\u6709\u6548\u671f\u3001\u53d1\u884c\u8005\u7b49\u4fe1\u606f\u5199\u5165\u8bc1\u4e66\uff0c\u5e76\u4f7f\u7528 CA \u7684\u79c1\u94a5\u5bf9\u8bc1\u4e66\u8fdb\u884c\u6570\u5b57\u7b7e\u540d\u3002\u5176\u4ed6\u7528\u6237\u53ef\u4ee5\u4f7f\u7528 CA \u7684\u516c\u94a5\u9a8c\u8bc1\u8be5\u8bc1\u4e66\u662f\u5426\u53ef\u4fe1<\/p>\n

          \u90a3\u4e48\u5e94\u7528\u8fc7\u7a0b\u4e00\u822c\u5c31\u662f<\/p>\n

          \u6211\u6d88\u606f\u7684\u63a5\u6536\u8005B\u6ce8\u518c\u516c\u94a5\u79c1\u94a5\uff0c\u7136\u540e\u628a\u6211\u4eec\u7684\u79c1\u516c\u94a5\u62ff\u53bb\u7ed9CA\u673a\u6784\u7533\u8bf7\u8bc1\u4e66\uff0cCA\u673a\u6784\u5148\u5ba1\u6838\uff0c\u5ba1\u6838\u901a\u8fc7\u4e86\u5c31\u7528\u4ed6\u4eec\u81ea\u5df1\u7684\u79c1\u94a5\u751f\u6210\u6570\u5b57\u8bc1\u4e66\uff0c\u90a3A\u5c31\u53ef\u4ee5\u7528CA\u673a\u6784\u7684\u516c\u94a5\u53bb\u9a8c\u8bc1\u8fd9\u4e2a\u6570\u5b57\u8bc1\u4e66\uff0c\u9a8c\u8bc1\u901a\u8fc7\u540e\uff0cA \u5c31\u53ef\u4ee5\u4fe1\u4efb\u8bc1\u4e66\u4e2d\u7684 B \u516c\u94a5\uff0c\u5e76\u4f7f\u7528 \u516c\u94a5 \u52a0\u5bc6\u6d88\u606f\u6216\u52a0\u5bc6\u5bf9\u79f0\u5bc6\u94a5\uff0c\u518d\u53d1\u9001\u7ed9 B<\/p>\n

          \u53ef\u89c6\u5316\u6d41\u7a0b\u7684\u8bdd\u5c31\u662f
          \n1. B \u751f\u6210\u81ea\u5df1\u7684\u5bc6\u94a5\u5bf9\uff1aPKB \u548c SKB<\/p>\n

            \n
          1. \n

            B \u628a\u81ea\u5df1\u7684\u8eab\u4efd\u4fe1\u606f\u548c\u516c\u94a5 PKB \u63d0\u4ea4\u7ed9 CA<\/p>\n<\/li>\n

          2. \n

            CA \u5ba1\u6838 B \u7684\u8eab\u4efd<\/p>\n<\/li>\n

          3. \n

            \u5ba1\u6838\u901a\u8fc7\u540e\uff0cCA \u751f\u6210 B \u7684\u6570\u5b57\u8bc1\u4e66
            \n \u8bc1\u4e66\u4e2d\u5305\u542b B \u7684\u8eab\u4efd\u4fe1\u606f\u3001B \u7684\u516c\u94a5 PKB\u3001\u6709\u6548\u671f\u3001CA \u4fe1\u606f\u7b49<\/p>\n<\/li>\n

          4. \n

            CA \u7528\u81ea\u5df1\u7684\u79c1\u94a5 SKCA \u5bf9\u8bc1\u4e66\u8fdb\u884c\u7b7e\u540d<\/p>\n<\/li>\n

          5. \n

            A \u83b7\u53d6 B \u7684\u6570\u5b57\u8bc1\u4e66<\/p>\n<\/li>\n

          6. \n

            A \u7528 CA \u7684\u516c\u94a5 PKCA \u9a8c\u8bc1\u8bc1\u4e66\u7b7e\u540d<\/p>\n<\/li>\n

          7. \n

            \u9a8c\u8bc1\u901a\u8fc7\u540e\uff0cA \u786e\u4fe1\u8bc1\u4e66\u91cc\u7684\u516c\u94a5 PKB \u786e\u5b9e\u5c5e\u4e8e B<\/p>\n<\/li>\n

          8. \n

            A \u4f7f\u7528 B \u7684\u516c\u94a5 PKB \u52a0\u5bc6\u6d88\u606f\u6216\u52a0\u5bc6\u4f1a\u8bdd\u5bc6\u94a5\uff0c\u7136\u540e\u53d1\u9001\u7ed9 B<\/p>\n<\/li>\n

          9. \n

            B \u4f7f\u7528\u81ea\u5df1\u7684\u79c1\u94a5 SKB \u89e3\u5bc6<\/p>\n<\/li>\n<\/ol>\n

            \u90a3\u8fd9\u4e00\u7ae0\u7b2c\u4e00\u90e8\u5206\u5c31\u8fd9\u6837\u5566<\/p>\n

            \u4fe1\u606f\u5b89\u5168\u7684\u5b9e\u73b0\u6280\u672f02<\/h2>\n
            \"Pasted<\/div><\/figure>\n
            \"Pasted<\/div><\/figure>\n

            \u90a3\u8fd9\u5c31\u662f\u6211\u4eec\u7f51\u7edc\u6700\u57fa\u672c\u7684\u51e0\u5c42\u54c8\uff0c\u5176\u5b9e\u6211\u4eec\u5728\u5b66\u8ba1\u7f51\u7684\u65f6\u5019\u5e94\u8be5\u662f\u4e94\u5c42\u4ed6\u8fd9\u91cc\u7ec6\u5316\u6210\u4e03\u5c42\u4e86\uff0c\u5f53\u7136\u8fd9\u4e0d\u91cd\u8981<\/p>\n

            1.
            \n\u989d\u5148\u8bb2\u8bb2\u8fd9\u4e2a\u7269\u7406\u5c42\u5427\uff0c\u90a3\u5176\u5b9e\u8fd9\u4e2a\u7269\u7406\u5c42\u5c31\u662f\u5728\u7269\u7406\u5c42\u9762\u4e0a\u8fdb\u884c\u9694\u79bb\uff0c\u6bd4\u5982\u5bf9\u4fe1\u53f7\u8fdb\u884c\u5e72\u6270\u6216\u5c4f\u853d\u5565\u7684\uff0c\u7c7b\u4f3c\u4e8e\u90a3\u79cd\u519b\u961f\u91cc\u9762\u7684\u7f51\u7edc\uff0c\u4e0d\u5141\u8bb8\u5c06wifi\u4f20\u64ad\u5230\u5916\u754c\u53bb\uff0c\u5185\u90e8\u81ea\u5df1\u4f7f\u7528\u7684\uff0c\u751a\u81f3\u4e8e\u8bf4\u53ef\u4ee5\u5c4f\u853d\u82f9\u679c\u624b\u673a\u7684\u4fe1\u53f7\uff08\u4eb2\u8eab\u4f53\u9a8c\u8fc7\uff09<\/p>\n

            \u90a3\u8fd9\u4e2a\u9694\u79bb\u554a\uff0c\u5c31\u662f\u5185\u90e8\u6d89\u5bc6\u7f51\u7edc\u4e0d\u8fde\u63a5\u4e92\u8054\u7f51\uff0c\u91cd\u8981\u670d\u52a1\u5668\u653e\u5728\u72ec\u7acb\u7684\u673a\u623f\uff0c\u5185\u7f51\u5916\u7f51\u4e0d\u80fd\u4e92\u901a<\/p>\n

            \u90a3\u5c4f\u853d\u5462\u5c31\u662f\u9632\u6b62\u4fe1\u53f7\u6cc4\u9732\u6216\u8005\u5916\u90e8\u7684\u5e72\u6270<\/p>\n

            2.
            \n\u90a3\u63a5\u4e0b\u6765\u5c31\u662f\u8fd9\u4e2a\u6570\u636e\u94fe\u8def\u5c42\u554a
            \n\u5b83\u4e3b\u8981\u4fdd\u62a4\u7684\u5c31\u662f\u6211\u4eec\u76f8\u90bb\u8282\u70b9\u95f4\u7684\u6570\u636e\u4f20\u8f93<\/p>\n

            \u50cf\u4e0a\u9762\u7684\u6280\u672f\u5c31\u6709\u94fe\u8def\u52a0\u5bc6\u8fd9\u79cd\u5bf9\u901a\u4fe1\u94fe\u8def\u4e0a\u4f20\u8f93\u7684\u6570\u636e\u8fdb\u884c\u52a0\u5bc6<\/p>\n

            \u8fd8\u6709PPTP\u8fd9\u79cd\u7528\u4e8e\u70b9\u5bf9\u70b9\u96a7\u9053\u534f\u8bae\u548cL2TP\u8fd9\u79cd\u7b2c\u4e8c\u5c42\u96a7\u9053\u534f\u8bae\uff0c\u4fe9\u8005\u90fd\u5e38\u7528\u4e8eVPN\uff08\u865a\u62df\u7f51\u7edc\u901a\u9053\uff09<\/p>\n

            3.
            \n\u7136\u540e\u662f\u8fd9\u4e2a\u7f51\u7edc\u5c42\u65b9\u9762
            \n\u9632\u706b\u5899\u63a7\u5236\u4e0d\u540c\u7f51\u7edc\u4e4b\u95f4\u7684\u6570\u636e\u8bbf\u95ee\uff0c\u5373\u5141\u8bb8\u54ea\u4e9bIP\u8bbf\u95ee\uff0c\u5141\u8bb8\u54ea\u4e9b\u7aef\u53e3\u901a\u4fe1\uff0c\u963b\u6b62\u53ef\u7591\u7684\u6d41\u91cf\u8fdb\u5165\u5185\u90e8\u7f51\u7edc
            \n\u800c\u8fd9\u4e2aIPSec\u662f\u5728IP\u5c42\u63d0\u4f9b\u52a0\u5bc6\u548c\u8ba4\u8bc1\uff0c\u5bf9IP\u6570\u636e\u5305\u8fdb\u884c\u52a0\u5bc6\uff0c\u8ba4\u8bc1\u548c\u5b8c\u6574\u6027\u6821\u9a8c<\/p>\n

            4.
            \n\u4f20\u8f93\u5c42\u7684\u8bdd\u5c31\u662f\u6211\u4eec\u6bd4\u8f83\u719f\u6089\u7684TLS\uff0cSSL\u548cSET<\/p>\n

            TLS\u7684\u8bdd\u5c31\u662f\u4f20\u8f93\u5c42\u7684\u5b89\u5168\u534f\u8bae\uff0cSSL\u4e3a\u5b83\u7684\u524d\u8eab
            \n\u6211\u4eec\u5e73\u5e38\u770b\u5230\u7684HTTPS\u91cc\u9762\u7684S\u5373Security\uff0c\u540c\u65f6\u8fd9\u4e2a\u534f\u8bae\u7684\u542b\u4e49\u4e5f\u662f\u5728\u539f\u6709\u7684HTTP\u534f\u8bae\u4e0a\u52a0\u4e0a\u4e86TLS\/SSL\uff0c\u5373HTTP+TLS\/SSL=HTTPS
            \n\u7528\u4e8e\u5b89\u5168\u4f20\u8f93<\/p>\n

            \u90a3\u4e48SET\u7684\u8bdd\u4ed6\u5c31\u662f\u7528\u4e8e\u7535\u5b50\u652f\u4ed8\u7684\uff0c\u5373\u5b89\u5168\u7535\u5b50\u4ea4\u6613\u534f\u8bae<\/p>\n

            5.
            \n\u90a3\u6700\u540e\u5c31\u662f\u4f1a\u8bdd\u5c42\uff0c\u8868\u793a\u5c42\u548c\u5e94\u7528\u5c42\u4e86<\/p>\n

            PGP \u5e38\u7528\u4e8e\u7535\u5b50\u90ae\u4ef6\u5b89\u5168\u3002
            \nS\/MIME \u4e5f\u662f\u7535\u5b50\u90ae\u4ef6\u5b89\u5168\u534f\u8bae\u3002
            \nSSH \u662f\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff0c\u6b38\u5bf9\u5c31\u662f\u6211\u4eec\u7ecf\u5e38\u8fdc\u7a0b\u8fde\u63a5\u670d\u52a1\u5668\u7684\u65f6\u5019\u7528\u7684\u90a3\u4e2a\u534f\u8bae\uff0c\u53cd\u6b63\u5bf9\u6211\u6765\u8bf4\u662f\u633a\u719f\u6089\u7684\uff0c\u55ef\u5c31\u662f\u4ee5\u524d\u73a9\u6811\u8393\u6d3e\u90a3\u4f1a
            \n\u90a3HTTPS\u521a\u624d\u8bb2\u8fc7\u4e86<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u90a3\u8fd9\u8fb9\u8fd9\u4e2a\u662f\u5728\u8bb2\u9632\u706b\u5899\u7684\u554a
            \n\u6211\u4eec\u5148\u4ece\u6700\u4e0a\u9762\u5f80\u4e0b\u770b\u5427\uff0c\u9996\u5148\u662f\u8fd9\u4e2a\u5c4f\u853d\u8def\u7531\u5668\uff0c\u4ed6\u4f1a\u5bf9\u6309\u89c4\u5219\u6211\u4eec\u7684IP\u5305\u8fdb\u884c\u8fc7\u6ee4\uff0c\u5c4f\u853d\uff0c\u4ed6\u51b3\u5b9a\u4e86\u6211\u4eec\u54ea\u4e9bIP\u5305\u53ef\u4ee5\u901a\u8fc7\uff0c\u8fd9\u662f\u7f51\u7edc\u7ea7\u7684\u9632\u706b\u5899<\/p>\n

            \u90a3\u5e94\u7528\u7ea7\u7684\uff0c\u4e5f\u5c31\u662f\u53ef\u4ee5\u9488\u5bf9\u5e94\u7528\u5c42\u8fdb\u884c\u8fc7\u6ee4
            \n\u9996\u5148\u662f\u8fd9\u4e2a\u53cc\u7a74\u4e3b\u673a\uff0c\u63a5\u4e86\u4fe9\u4e2a\u7f51\u5361\uff0c\u4e00\u4e2a\u9762\u5411\u5916\u7f51\u4e00\u4e2a\u9762\u5411\u5185\u7f51\uff0c\u901a\u8fc7\u4e3b\u673a\u4e0a\u7684\u4ee3\u7406\u670d\u52a1\u6216\u5e94\u7528\u5c42\u63a7\u5236\u5b9e\u73b0\u8bbf\u95ee\u63a7\u5236
            \n\u90a3\u5c4f\u853d\u4e3b\u673a\u5c31\u662f\u5c06\u5c4f\u853d\u8def\u7531\u5668\u548c\u53cc\u7a74\u4e3b\u673a\u8fdb\u884c\u7ed3\u5408\uff0c\u5148\u7531\u5c4f\u853d\u8def\u7531\u5668\u8fdb\u884c\u8fc7\u6ee4\u518d\u7531\u53cc\u7a74\u4e3b\u673a\u8fdb\u884c\u8fc7\u6ee4\uff0c\u53cc\u91cd\u4fdd\u969c\u561b
            \n\u90a3\u6700\u540e\u5c31\u662f\u8fd9\u4e2a\u5c4f\u853d\u5b50\u7f51\uff0c\u4ed6\u6709\u4e2a\u6982\u5ff5\u5c31\u662f\u975e\u519b\u4e8b\u533a\uff0c\u8fd9\u4e2a\u975e\u519b\u4e8b\u533a\u91cc\u9762\u53ef\u4ee5\u653e\u4e00\u4e9b\u6211\u4eec\u53ef\u4ee5\u5411\u5916\u7f51\u8bbf\u95ee\u7684\u8d44\u6e90\uff0c\u6bd4\u5982\u6211\u4eec\u7684web\u670d\u52a1\u5668\uff0c\u90a3\u8fd9\u91cc\u7684\u4fe9\u4e2a\u5c4f\u853d\u8def\u7531\u5668\u5c31\u5206\u522b\u5bf9IP\u5305\u8fdb\u884c\u4e0d\u540c\u6761\u4ef6\u4e0a\u7684\u8fc7\u6ee4\uff0c\u7531\u6d45\u81f3\u6df1\u5b89\u5168\u6027\u9010\u6e10\u589e\u5f3a
            \n\u5178\u578b\u7684\u7ed3\u6784\u5c31\u662f<\/p>\n

            Internet
            \n \u2193
            \n\u5916\u90e8\u5c4f\u853d\u8def\u7531\u5668 \/ \u5916\u90e8\u9632\u706b\u5899
            \n \u2193
            \nDMZ \u533a\u57df
            \n \u2193
            \n\u5185\u90e8\u5c4f\u853d\u8def\u7531\u5668 \/ \u5185\u90e8\u9632\u706b\u5899
            \n \u2193
            \n\u5185\u90e8\u7f51\u7edc<\/p>\n

            \u5b89\u5168\u6027\u662f\u6700\u9ad8\u7684<\/p>\n

            \u5173\u7cfb\u6570\u636e\u5e93<\/h2>\n

            \u8bf4\u4e86\u8fd9\u4e48\u4e45\u7ec8\u4e8e\u5230\u6570\u636e\u5e93\u76f8\u5173\u7684\u5185\u5bb9\u4e86\uff0c\u771f\u7684\u662f\u5e9f\u8bdd\u4e00\u5927\u5806\uff0c\u53d7\u4e0d\u4e86\u4e86<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u89e3\u91ca\u4e00\u4e0b\u5c31\u57fa\u672c\u6982\u5ff5\uff0c\u8fd9\u91cc\u7684
            \n\u8fd9\u91cc\u9762\u8fd9\u4e2a\u8868\u5c31\u662f\u4e00\u4e2a\u5173\u7cfb
            \n\u90a3\u4e48\u5c5e\u6027\u5c31\u7c7b\u4f3c\u8fd9\u4e2a\u90e8\u95e8\u53f7\uff0c\u540d\u79f0\u8fd9\u4e9b\u5217
            \n\u57df\u5c31\u662f\u5c5e\u6027\u7684\u53d6\u503c\u8303\u56f4\uff0c\u6bd4\u5982\u6211\u7684\u6635\u79f0\u957f\u5ea6\u4e0d\u80fd\u8d85\u8fc750\u4e2a\u5b57
            \n\u5143\u7ec4\u5c31\u662f\u6211\u8fd9\u4e00\u884c\u884c\u7684\u6570\u636e\uff0c\u6bd4\u5982 {101\uff0c\u5f00\u53d1\u90e8\uff0c189XXXX\uff0c\u5f20\u4e09} \u8fd9\u6837\u7b97\u4e00\u4e2a\u5143\u7ec4
            \n\u5206\u91cf\u662f\u67d0\u4e2a\u5143\u7ec4\u5728\u67d0\u4e2a\u5c5e\u6027\u4e0a\u7684\u53d6\u503c\uff0c\u6bd4\u5982\u6211\u90e8\u95e8\u53f7\u91cc\u9762\u7684101\u5c31\u7b97\u4e00\u4e2a\u5206\u91cf
            \n\u76ee\u5c31\u662f\u6211\u4e00\u4e2a\u5143\u7ec4\u91cc\u9762\u7531\u51e0\u4e2a\u5c5e\u6027\uff0c\u6bd4\u5982\u4e0a\u9762\u6211\u9488\u5bf9\u5143\u7ec4\u4e3e\u7684\u90a3\u4e2a\u4f8b\u5b50\uff0c\u91cc\u9762\u6709\u56db\u4e2a\u5c5e\u6027\u5c31\u662f\u6709\u56db\u76ee<\/p>\n

            \u6807\u51c6\u5316\u800c\u8a00\u7684\u8bdd\u5c31\u662f<\/p>\n\n\n\n\n\n\n\n\n\n\n
            \u6982\u5ff5<\/th>\n\u901a\u4fd7\u7406\u89e3<\/th>\n\u4f8b\u5b50<\/th>\n<\/tr>\n<\/thead>\n
            \u5173\u7cfb<\/td>\n\u4e00\u5f20\u4e8c\u7ef4\u8868<\/td>\n\u5458\u5de5\u8868\u3001\u90e8\u95e8\u8868<\/td>\n<\/tr>\n
            \u5c5e\u6027<\/td>\n\u8868\u4e2d\u7684\u5217<\/td>\n\u5458\u5de5\u53f7\u3001\u59d3\u540d\u3001\u90e8\u95e8\u53f7<\/td>\n<\/tr>\n
            \u57df<\/td>\n\u5c5e\u6027\u7684\u53d6\u503c\u8303\u56f4<\/td>\n\u6027\u522b\u53ea\u80fd\u53d6\u7537\/\u5973\uff0c\u7535\u8bdd\u53f7\u7801\u957f\u5ea6\u6709\u9650<\/td>\n<\/tr>\n
            \u5143\u7ec4<\/td>\n\u8868\u4e2d\u7684\u4e00\u884c\u6570\u636e<\/td>\n\u4e00\u6761\u5458\u5de5\u8bb0\u5f55<\/td>\n<\/tr>\n
            \u5206\u91cf<\/td>\n\u5143\u7ec4\u4e2d\u7684\u67d0\u4e00\u4e2a\u5c5e\u6027\u503c<\/td>\n\u67d0\u5458\u5de5\u7684\u59d3\u540d\u3001\u67d0\u90e8\u95e8\u7684\u7535\u8bdd<\/td>\n<\/tr>\n
            \u76ee\/\u5ea6<\/td>\n\u5c5e\u6027\u4e2a\u6570<\/td>\n\u90e8\u95e8\u8868\u6709 4 \u4e2a\u5c5e\u6027\uff0c\u6240\u4ee5\u662f 4 \u76ee\u5173\u7cfb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \u5173\u7cfb\u6a21\u5f0f\u7684\u8bdd
            \n\u4e00\u822c\u662f\u8fd9\u6837\u7ec4\u6210\u7684
            \nR\uff08U,D,dom,.F)
            \nR\u5c31\u662f\u5bf9\u5e94\u8868\u7684\u540d\u79f0\u6bd4\u5982\u6211\u4eec\u7684\u5de5\u4f5c\u8868\u8fd9\u6837
            \nU\u5c31\u662f\u5c5e\u6027\u540d\u7684\u96c6\u5408\uff0c\u6bd4\u5982{\u90e8\u95e8\uff0c\u540d\u79f0\uff0c\u7535\u8bdd\uff0c\u8d1f\u8d23\u4eba}
            \ndom\u5c31\u662f\u5b9a\u4e49\u5177\u4f53\u54ea\u4e00\u5217\u5bf9\u5e94\u54ea\u4e2a\u53d6\u503c\u8303\u56f4\uff0c\u4e25\u683c\u6765\u8bf4\u5c31\u662f\u5c5e\u6027\u5230\u57df\u7684\u6620\u5c04\u5173\u7cfb\u5566\uff0c\u6bd4\u5982\u89c4\u5b9a\u7535\u8bdd\u53f7\u7801\u4e0d\u80fd\u8d85\u8fc711\u4f4d\u8fd9\u6837
            \nF\u7684\u8bdd\u5c31\u662f\u6838\u5fc3\u7684\u903b\u8f91\u7ea6\u675f\uff0c\u6bd4\u5982\u6211\u901a\u8fc7\u8fd9\u4e2a\u90e8\u95e8\u53f7\u80fd\u786e\u5b9a\u90e8\u95e8\u540d\u79f0\u8fd9\u6837\uff0c\u8fd9\u79cd\u903b\u8f91\u5173\u7cfb\u5c31\u662fF<\/p>\n

            \u7136\u540e\u662f\u5019\u9009\u7801\uff0c\u5c31\u662f\u53ef\u4ee5\u6807\u8bc6\u6211\u4eec\u67d0\u4e00\u4e2a\u5c5e\u6027\u6216\u8005\u5c5e\u6027\u7ec4\u7684\u6700\u5c0f\u96c6\u5408\uff0c\u53ef\u4ee5\u786e\u5b9a\u8fd9\u4e00\u6761\u5143\u7ec4\uff0c\u6bd4\u5982\u6211\u4eec\u770b\u770b\u4e0b\u9762\u8fd9\u4e2a\u5458\u5de5\uff0c\u5458\u5de5\u7684\u5019\u9009\u7801\u5c31\u662f{\u5458\u5de5\u53f7\uff0c\u8eab\u4efd\u8bc1\u53f7}<\/p>\n

            \u90a3\u4e3b\u952e\u5c31\u662f\u552f\u4e00\u6807\u8bc6\u8be5\u5143\u7ec4\u7684\u5c5e\u6027\uff0c\u6bd4\u5982\u5458\u5de5\u8fd9\u8fb9\u5c31\u662f\u5458\u5de5\u53f7\u4e86\uff08\u5176\u5b9e\u5c31\u662f\u4ece\u5019\u9009\u7801\u91cc\u9762\u9009\u4e00\u4e2a\u51fa\u6765\uff09<\/p>\n

            \u5916\u952e\u5c31\u662f\u4e00\u4e2a\u5173\u7cfb\u4e2d\u7684\u5c5e\u6027\u5f15\u7528\u53e6\u4e00\u4e2a\u5173\u7cfb\u7684\u4e3b\u7801\u6216\u5019\u9009\u7801\uff0c\u7528\u6765\u5efa\u7acb\u4e24\u4e2a\u8868\u4e4b\u95f4\u7684\u8054\u7cfb\u3002<\/p>\n

            \n

            \u4e3b\u5c5e\u6027<\/strong>\uff1a\u5305\u542b\u5728\u4efb\u610f\u4e00\u4e2a\u5019\u9009\u7801\u4e2d\u7684\u5c5e\u6027\u3002<\/p>\n

            \u975e\u4e3b\u5c5e\u6027<\/strong>\uff1a\u4e0d\u5305\u542b\u5728\u4efb\u4f55\u5019\u9009\u7801\u4e2d\u7684\u5c5e\u6027\u3002<\/p>\n

            \u5168\u7801<\/strong>\uff1a\u5173\u7cfb\u6a21\u5f0f\u7684\u6240\u6709\u5c5e\u6027\u5171\u540c\u7ec4\u6210\u5019\u9009\u7801\u3002<\/p>\n<\/blockquote>\n

            \"Pasted<\/div><\/figure>\n

            \u8fd9\u91cc\u7684\u5b9e\u4f53\u5b8c\u6574\u6027\u5c31\u662f\u6bd4\u5982\u6211\u4eec\u9700\u8981\u5bf9\u4e3b\u952e\u5b9a\u4e49\u4e00\u4e2anot null\u8fd9\u6837\u7684\uff0c\u4e5f\u5c31\u662f\u57fa\u672c\u5173\u7cfb\u7684\u4e3b\u5c5e\u6027\u4e0d\u80fd\u53d6\u7a7a\u503c<\/p>\n

            \u90a3\u7528\u6237\u81ea\u5b9a\u4e49\u5b8c\u6574\u6027\u5c31\u662f\u7c7b\u4f3c\u4e8e\u518d\u6027\u522b\u8fd9\u8fb9\u5b9a\u4e49\u4e00\u4e2aM\/F\uff0c\u53ea\u80fd\u7ea6\u675f\u6709\u4fe9\u4e2a\u6027\u522b\u8fd9\u6837\u7684\uff0c\u4e5f\u5c31\u662f\u6839\u636e\u4e1a\u52a1\u5177\u4f53\u5b9a\u4e49\u7684\u7ea6\u675f\u6761\u4ef6<\/p>\n

            \u90a3\u53c2\u7167\u5b8c\u6574\u6027\u5c31\u662f\u5916\u952e\u7684\u5b8c\u6574\u6027\u4e86
            \n\u82e5\u5c5e\u6027 F \u662f\u5173\u7cfb R \u7684\u5916\u7801\uff0c\u5b83\u5f15\u7528\u5173\u7cfb S \u7684\u4e3b\u7801\uff0c\u5219 R \u4e2d F \u7684\u53d6\u503c\u5fc5\u987b\u4e3a\u7a7a\u503c\uff0c\u6216\u8005\u7b49\u4e8e S \u4e2d\u67d0\u4e2a\u5143\u7ec4\u7684\u4e3b\u7801\u503c\u3002<\/p>\n

            \u5173\u7cfb\u4ee3\u6570\u8fd0\u7b97<\/h2>\n
            \"Pasted<\/div><\/figure>\n

            \u554a\u3002\u3002\u3002\u3002\u5173\u7cfb\u4ee3\u6570\u8fd0\u7b97\uff0c\u8fd9\u662f\u6700\u957f\u7684\u4e00\u7ae0\uff0c\u4f46\u8fd8\u597d\u6211\u4ee5\u524d\u5728\u4e0a\u6570\u636e\u5e93\u7cfb\u7edf\u6982\u8bba\u7684\u65f6\u5019\u5b66\u8fc7\u4e00\u70b9\uff0c\u6211\u4eec\u53ef\u4ee5\u5feb\u901f\u8fc7\u4e00\u8fc7\uff08\u56e0\u4e3a\u539f\u89c6\u9891\u53f3\u63a5\u8fd11h15min\u7684\u65f6\u957f\u4f46\u5927\u90e8\u5206\u90fd\u662f\u5e9f\u8bdd\uff09<\/p>\n

            \"Pasted<\/div><\/figure>\n
            \"Pasted<\/div><\/figure>\n

            \u5e76\u548c\u5dee\u90fd\u4e00\u76ee\u4e86\u7136
            \n\u5e76\u5c31\u662f\u4fe9\u8868\u76f8\u52a0\uff0c\u4e5f\u5c31\u662f\u56fe\u4e2dR\u8868\u548cS\u8868\u62e5\u6709\u7684\u96c6\u5408
            \n\u5dee\u5c31\u662f\u51cf\u8868\u5c06\u88ab\u51cf\u8868\u7684\u5185\u5bb9\u5728\u81ea\u5df1\u7684\u8868\u4e2d\u9664\u53bb\uff0c\u5c31\u50cf\u56fe\u4e2d\uff0cR\u8868\u5c06\u81ea\u5df1\u4e0eS\u8868\u91cd\u5408\u7684\u90e8\u5206\u5254\u9664\uff0c\u53ea\u7559\u4e0ba\u5f00\u5934\u548cc\u5f00\u5934\u7684\u4fe9\u4e2a\u5143\u7ec4<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u8fd9\u91cc\u4ea4\u5c31\u662f\u628a\u540c\u65f6\u5c5e\u4e8e\u4fe9\u8868\u7684\u5143\u7d20\u90fd\u62bd\u51fa\u6765
            \n\u6bd4\u5982\u8fd9\u91cc\u7684R\u548cS\u5c31\u662f\u628a\u4fe9\u8868\u5171\u6709\u7684\u5143\u7d20\u62bd\u51fa\u6765\u7ec4\u6210\u65b0\u8868<\/p>\n

            \"Pasted<\/div><\/figure>\n

            OK\u8fd9\u91cc\u7b1b\u5361\u5c14\u79ef\u770b\u7740\u5f88\u590d\u6742\u662f\u5427\uff0c\u6ca1\u4e8b\u6211\u4eec\u76f4\u63a5\u770b\u6f14\u793a\u56fe\u6280\u80fd\u61c2\u4e86\uff0c \u4f46\u8fd9\u91cc\u8fd8\u662f\u8981\u628a\u516c\u5f0f\u8bb0\u4e00\u4e0b\u5b50<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u4f60\u770b\uff0c\u8fd9\u91cc\u5c31\u662f\u628a\u6bcf\u4e2a\u8868\u7684\u6bcf\u4e2a\u5143\u7d20\u548c\u76f8\u4e58\u7684\u5176\u4ed6\u8868\u7684\u5143\u7d20\u7ec4\u6210\u6392\u5217\u7ec4\u5408
            \n\u6bd4\u5982\u6211\u4eec\u7684D1\u91cc\u9762\u76840\uff0c\u5c31\u9700\u8981\u548cD2\u7684a,b\uff0cD3\u7684c,d\u6392\u5217\u7ec4\u5408\u5f62\u6210
            \n{0,a,c},{0,a,d},{0,b,c},{0,b,d}\u8fd9\u6837\u505a\u7ec4\u5408\u8fd0\u7b97<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u8fd9\u91cc\u8fd9\u5f20\u56fe\u53ef\u4ee5\u66f4\u76f4\u89c2\u5730\u611f\u53d7\uff0c\u76f4\u767d\u6765\u8bb2\u5c31\u662f\u6211\u7684\u6bcf\u4e00\u884c\u90fd\u8981\u548c\u4f60\u7684\u6bcf\u4e00\u884c\u505a\u7ec4\u5408
            \n\u5bf9\u5c31\u8fd9\u4e48\u7b80\u5355<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u7136\u540e\u662f\u6295\u5f71
            \n\u5c31\u662f\u5355\u7eaf\u4ece\u8868\u4e2d\u9009\u53d6\u5c5e\u6027\uff0c\u8fd9\u91cc\u7684\u6570\u636e\u5e93\u8bed\u53e5\u4e5f\u53ef\u4ee5\u76f4\u89c2\u770b\u5230
            \nselect A,C from R
            \n\u597d\u7c7b\u6bd4\u4e8e\u6211\u4eec\u7684
            \nselect grade,name from Student_page
            \n\u8fd9\u6837<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u90a3\u9009\u62e9\u7684\u8bdd\u54b1\u4e5f\u5f88\u719f\u6089\uff0c\u5c31\u662f\u6839\u636e\u6761\u4ef6\u4ece\u8868\u4e2d\u9009\u62e9\u6211\u4eec\u9700\u8981\u7684\u5143\u7ec4<\/p>\n

            \u8fd9\u91cc\u7684\u6570\u636e\u5e93\u8bed\u53e5\u662fselect*from R where A>B<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u8fd9\u91cc\u7684\u9664\u7684\u8bdd\u5c31\u6bd4\u8f83\u590d\u6742\u4e86\uff0c\u6211\u4eec\u76f4\u63a5\u7ed3\u5408\u8be6\u7ec6\u7528\u4f8b\u770b\u770b\u5427<\/p>\n

            \"Pasted<\/div><\/figure>\n
            \"Pasted<\/div><\/figure>\n
            \"Pasted<\/div><\/figure>\n

            \u8fd9\u91cc\u5148\u627e\u6211\u4eecR\u8868\u548cS\u8868\u5c5e\u6027\u76f8\u4ea4\u7684\u90e8\u5206\uff0c\u627e\u51fa\u5b83\u5728R\u5173\u7cfb\u91cc\u9762\u7684\u6295\u5f71\uff0c\u4f5c\u4e3a\u8c61\u96c6A\uff0c\u5c06R\u7684\u5176\u4ed6\u51e0\u4e2a\u5217\u4f5c\u4e3a\u4e00\u4e2a\u8c61\u96c6B\uff0c\u90a3\u4e48\u5982\u679c\u8fd9\u4e2a\u8c61\u96c6B\u7684\u67d0\u4e00\u5143\u7ec4\u5728\u539f\u8868\u4e2d\u4efb\u610f\u5143\u7ec4\u6709\u5b8c\u6574\u7684\u8c61\u96c6A\uff0c\u90a3\u4e48\u8fd9\u4e2a\u5143\u7ec4\u5c31\u662f\u7ed3\u679c\u4e4b\u4e00<\/p>\n

            \u6bd4\u5982\u6211\u4eec\u4e0a\u56fe\uff0c\u6211\u5148\u627e\u5230S\u548cR\u8868\u91cd\u5408\u7684\u5c5e\u6027\u662fC,D
            \n\u90a3\u4e48\u6211\u4eec\u76f4\u63a5\u5728R\u8868\u91cc\u9762\u627e\u5230C,D
            \n\u7136\u540e\u8fd9\u91cc\u53ef\u4ee5\u770b\u5230A,B\u4fe9\u5217\u91cc\u9762\u53ea\u6709a,b\u548cc,k\u8fd9\u4e2a\u7ec4\u5408\u5b8c\u5168\u5305\u542bC,D\u5728S\u8868\u91cc\u9762\u7684
            \n\u62e5\u6709{c,d},{e,f}\u4fe9\u4e2a\u5143\u7ec4\u7684\u6761\u4ef6
            \n\u90a3\u4e48\u7ed3\u679c\u5c31\u662fR\/S={a,b}\u548c{c,k}<\/p>\n

            \"Pasted<\/div><\/figure>\n
            \"Pasted<\/div><\/figure>\n

            \u7136\u540e\u8fd9\u91cc\u662f\u8fde\u63a5<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u9996\u5148\u8981\u505a\u7b1b\u5361\u5c14\u79ef\u8fd0\u7b97
            \n\u7136\u540e\u518d\u6839\u636e\u6761\u4ef6\u505a\u5173\u7cfb\u8fd0\u7b97
            \n\u6bd4\u5982<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u8fd9\u91cc\u7684\u6761\u4ef6\u662fR.A<S.B
            \n\u90a3\u4e48\u6211\u4eec\u5c31\u4ece\u505a\u5b8c\u7b1b\u5361\u5c14\u79ef\u7684\u8868\u4e2d\u9009\u62e9\u5bf9\u5e94\u5143\u7ec4\u7ec4\u6210\u67e5\u8be2\u8868\u5c31\u884c\u4e86<\/p>\n

            \u554a\u4e0d\u662f\u56fe\u4e2d\u7ea2\u8272\u6846\u6846\u7684\u54c8\uff0c\u662f\u5254\u9664\u4ed6\u4eec\u7684\u7ec4\u6210\u65b0\u8868<\/p>\n

            \"Pasted<\/div><\/figure>\n
            \"Pasted<\/div><\/figure>\n

            \u5c31\u662f\u8981\u6c42\u8fdb\u884c\u6bd4\u8f83\u5206\u91cf\u5fc5\u987b\u662f\u76f8\u540c\u7684\u5c5e\u6027\u7ec4\uff0c\u5e76\u4e14\u7ed3\u679c\u96c6\u4e2d\u5c06\u91cd\u590d\u5c5e\u6027\u5217\u53bb\u6389<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u7136\u540e\u5c31\u662f\u5916\u8fde\u63a5\u4e86
            \n\u6570\u636e\u5e93\u8bed\u53e5\u91cc\u9762\u597d\u50cf\u662f
            \n\u5de6\u5916left join
            \n\u53f3\u5916right join
            \n\u5168\u5916\u8fde\u5c31\u662ffull join<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u6bd4\u5982\u8fd9\u91cc\u7684\u5de6\u8fde\u63a5\uff0c\u4f9d\u65e7\u662f\u627e\u6295\u5f71\u90a3\u5957\uff0c\u627e\u51fa\u6211\u4eecR\u548cS\u91cc\u9762\u76f8\u540c\u7684\u5c5e\u6027\u5217\uff0c\u7136\u540e\u6bd4\u5982\u8fd9\u91ccR\u7684\u7b2c\u4e00\u884c\u548cS\u7684\u7b2c\u4e00\u884c\u90fd\u6709b,c\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u7ec4\u6210\u8fde\u63a5\uff0c\u90a3\u4e48\u8fd9\u91cc\u7684\u5de6\u5916\u8fde\u63a5\u5176\u5b9e\u5c31\u662f\u4ee5R\u8868\u4e3a\u4e3b\u4f53\uff0c\u4f60\u770b\uff0c\u8fd9\u91cc\u7684b,a,d\u548cdf,g\u5728S\u8868\u4e2d\u7684B,C\u4fe9\u4e2a\u5c5e\u6027\u90fd\u6ca1\u6709\u91cd\u590d\uff0c\u90a3\u4e48\u76f8\u5e94\u7684D\u5c5e\u6027\u5c31\u662fnull<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u53f3\u5916\u8fde\u5219\u4e0e\u5de6\u5916\u8fde\u76f8\u53cd\uff0c\u53ef\u4ee5\u7c7b\u6bd4\u4e00\u4e0b\u5c31\u5f97\u5230\u7ed3\u679c\u54c8<\/p>\n

            \u554a\u592a\u597d\u4e86\u901f\u901f\u5199\u5b8c\u4e86\uff08\u6bd5\u7adf\u90fd\u662f\u4ee5\u524d\u4e0a\u8bfe\u4e0a\u5230\u8fc7\u7684\u5185\u5bb9\u901f\u901f\u8fc7\u4e00\u4e0b\u5dee\u4e0d\u591a
            \n\u90a3\u5c31\u5148\u8fd9\u6837\u4e86\u5427\u90fd\u51cc\u6668\u4fe9\u70b9\u4e86\uff0c\u4e5f\u7b97\u662f\u72e0\u72e0\u590d\u4e60\u4e86\u4e00\u6ce2\u4ee5\u524d\u7684\u77e5\u8bc6\u4e86<\/p>\n

            \u67e5\u8be2\u4f18\u5316<\/h2>\n

            \u554a\u592a\u597d\u4e86\u4e45\u8fdd\u7684\u4e94\u5206\u949f\u7b80\u77ed\u6559\u5b66\u89c6\u9891
            \n\u6211\u4eec\u5c31\u901f\u6218\u901f\u51b3\u5427<\/p>\n

            \"Pasted<\/div><\/figure>\n

            OK\u8fd9\u91cc\u6211\u4eec\u67e5\u8be2\u7684\u57fa\u672c\u6982\u5ff5\u6709\u8fd9\u4e9b
            \n\u67e5\u8be2\u5904\u7406\uff0c\u67e5\u8be2\u4ee3\u4ef7\u548c\u67e5\u8be2\u7684\u4f18\u5316<\/p>\n

            \u67e5\u8be2\u5904\u7406\u5c31\u662f\u4ece\u6570\u636e\u5e93\u91cc\u9762\u628a\u6570\u636e\u6252\u62c9\u51fa\u6765\uff0c\u4e0d\u7ba1\u662f\u78c1\u76d8\u6570\u636e\u5e93\uff08mysql\u90a3\u4e00\u7c7b)\u8fd8\u662f\u5185\u5b58\u6570\u636e\u5e93(\u4e5f\u5c31\u662fredis\u90a3\u4e00\u7c7b)<\/p>\n

            \u90a3\u67e5\u8be2\u4ee3\u4ef7\u5c31\u662fI\/O\uff08\u4e5f\u5c31\u662f\u6570\u636e\u7684input\u548coutput\u65f6\u95f4\uff09\uff0c\u4e3b\u8981\u6307\u6570\u636e\u4ece\u78c1\u76d8\u8bfb\u53d6\u6570\u636e\u9875\u5230\u5185\u5b58\u7684\u65f6\u95f4\uff0c\u8fd9\u79cd\u4ece\u4f20\u7edf\u6570\u636e\u5e93\u8bfb\u53d6\u6570\u636e\u6240\u9700\u7684\u65f6\u95f4\u6bd4\u6211\u4eec\u4ece\u5185\u5b58\u6570\u636e\u5e93\u91cc\u8bfb\u53d6\u6570\u636e\u7684\u65f6\u95f4\u8981\u6162\u5f88\u591a
            \n\u5df2\u7ecfCPU\u65f6\u95f4\uff0c\u6211\u4eecCPU\u6267\u884c\u67e5\u8be2\u64cd\u4f5c\u6240\u9700\u7684\u65f6\u95f4\uff0c\u6bd4\u5982\u9700\u8981\u5224\u65adwhere\u6216\u8005\u9700\u8981\u8fdb\u884c\u6392\u5e8f\u7684order by\u7b49
            \n\u5185\u5b58\u4ee3\u4ef7\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u6267\u884c\u67e5\u8be2\u65f6\u989d\u5916\u9700\u8981\u7684\u5185\u5b58\u8d44\u6e90<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u7136\u540e\u8fd9\u91cc\u662f\u4f18\u5316\u7684\u51c6\u5219\uff0c\u8003\u8bd5\u4e2d\u6709\u53ef\u80fd\u4f1a\u8003\u5230\u539f\u9898\u6240\u4ee5\u9700\u8981\u8bb0\u4e00\u8bb0\u54c8<\/p>\n

            \u603b\u7684\u6765\u8bf4\u5c31\u662f
            \n\u9009\u53d6\u8fd0\u7b97\u8981\u63d0\u524d\u6267\u884c
            \n\u5408\u5e76\u4e58\u79ef\uff08\u4e5f\u5c31\u662f\u8ba1\u7b97\u7b1b\u5361\u5c14\u79ef\u90a3\u79cd\uff09\u548c\u9009\u62e9\u8fd0\u7b97\uff08\u7c7b\u4f3c\u9009\u6295\u5f71\u4e4b\u7c7b\u7684\u5427\uff09\u4e3a\u8fde\u63a5\u8fd0\u7b97
            \n\u7136\u540e\u5c31\u662f\u6295\u5f71\u8fd0\u7b97\u548c\u5176\u540e\u7684\u5176\u4ed6\u8fd0\u7b97\u540c\u65f6\u8fdb\u884c\uff0c\u907f\u514d\u91cd\u590d\u626b\u63cf
            \n\u548c\u4e8c\u76ee\u8fd0\u7b97\u4e5f\u4e00\u6837
            \n\u6267\u884c\u8fde\u63a5\u524d\u8981\u5bf9\u5173\u7cfb\u505a\u9002\u5f53\u7684\u9884\u5904\u7406\uff0c\u5c31\u80fd\u5feb\u901f\u627e\u51fa\u8981\u94fe\u63a5\u7684\u5143\u7ec4
            \n\u6700\u540e\u5c31\u662f\u8981\u5b58\u50a8\u516c\u5171\u5b50\u8868\u8fbe\u5f0f<\/p>\n

            \u5173\u7cfb\u6570\u636e\u5e93\u7406\u8bba\u57fa\u7840\u77e5\u8bc6<\/h2>\n
            \"Pasted<\/div><\/figure>\n

            \u90a3\u51fd\u6570\u4f9d\u8d56\u5bf9\u5427
            \n\u6211\u4eec\u5c31\u8a00\u7b80\u610f\u8d45\u7684\u901f\u901f\u89e3\u91ca\uff0c\u4e0d\u6d6a\u8d39\u65f6\u95f4<\/p>\n

            \u5c31\u662f\u5b58\u5728\u5173\u7cfbX\u548cY\uff0c\u5982\u679cX\u80fd\u63a8\u51faY\u90a3\u4e48\u5c31\u8bf4\u660eX\u51b3\u5b9aY\uff0c\u6216\u8005\u8bf4Y\u4f9d\u8d56\u4e8eX
            \n\u6bd4\u5982\u5b66\u751f\u5b66\u53f7\u548c\u5b66\u751f\u59d3\u540d\u5c31\u662f
            \n\u5b66\u53f7ID->\u59d3\u540d
            \n\u5f88\u7b80\u5355\u5bf9\u4e0d\u5bf9\uff1f<\/p>\n

            \u7136\u540e\u5c31\u662f\u8fd9\u91cc\u9762\u7684X\u5c5e\u4e8e\u51b3\u5b9a\u56e0\u5b50
            \n\u82e5X->Y\u4e14Y->X\uff0c\u5219X<–>Y\uff0c\u5509\u4e5f\u5c31\u662f\u4e92\u76f8\u4f9d\u8d56\u561b
            \n\u7136\u540e\u5c31\u662f\u5982\u679cY\u51fd\u6570\u4e0d\u4f9d\u8d56\u4e8eX\u90a3\u4e48\u5c31\u662fX–>Y\u4e86\u5457<\/p>\n

            \"Pasted<\/div><\/figure>\n

            OK\u63a5\u4e0b\u6765\u8fd9\u4e2a
            \n\u5e73\u51e1\u4f9d\u8d56\u5c31\u662f\u5b58\u5728X->Y\uff0c\u4e14Y\u5c5e\u4e8eX\uff0c\u90a3\u4e48X->Y\u5c31\u662f\u5e73\u51e1\u4f9d\u8d56
            \n\u5c31\u6bd4\u5982\u6211\u5b58\u5728\u897f\u74dc1-100\u53f7\uff0c\u90a3\u4e48\u897f\u74dc2-5\u53f7\u5c31\u5c5e\u4e8e\u8fd9\u4e2a1-100\u53f7\u7684\u5173\u7cfb\u4e2d
            \n\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u7531\u6211\u4eec\u7531\u897f\u74dc1-100\u53f7\u63a8\u5bfc\u51fa\u897f\u74dc2-5\u53f7\u8fd9\u4e2a\u5173\u7cfb\uff0c\u4e5f\u5c31\u662f\u5e73\u51e1\u4f9d\u8d56<\/p>\n

            \u7136\u540e\u975e\u5e73\u51e1\u4f9d\u8d56\u5c31\u662f\u8ddf\u4e0a\u9762\u53cd\u7740\u6765\u7684\uff0c\u4e5f\u5c31\u662fY\u4e0d\u5c5e\u4e8eX\u4e14Y\u4f9d\u8d56\u4e8eX<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u5b8c\u5168\u51fd\u6570\u4f9d\u8d56\u7684\u8bdd\u5c31\u662f\uff0c\u6211\u8fd9\u4e2a\u5173\u7cfb\u8981\u5b8c\u5168\u4f9d\u8d56\u4f60\u90a3\u4e2a\u5173\u7cfb\u7684\u6574\u4e2a\u96c6\u5408\u624d\u80fd\u63a8\u5bfc\u51fa\u6765
            \n\u4efb\u4f55\u4e00\u4e2a\u5b50\u96c6\u90fd\u4e0d\u884c
            \n\u5f88\u76f4\u89c2\u7684\u5c31\u662f\u6211\u4eec\u4e0a\u9762\u6574\u4e2a\uff08Sno,Cno)->Grade\uff0c\u5b66\u53f7\uff0b\u73ed\u7ea7\u53f7\u63a8\u5bfc\u51fa\u6210\u7ee9\uff0c\u6574\u4e2a\u96c6\u5408\u624d\u80fd\u63a8\u5bfc\u51fa\u6211\u4eec\u7684\u5173\u7cfb<\/p>\n

            \u90a3\u90e8\u5206\u51fd\u6570\u4f9d\u8d56\u7684\u8bdd\u5c31\u76f8\u5bf9\u800c\u8a00\u6ca1\u90a3\u4e48\u82db\u523b\u4e86\uff0c\u53ea\u9700\u8981\u51b3\u5b9a\u56e0\u5b50\u91cc\u9762\u7684\u5b50\u96c6\u4fbf\u53ef\u4ee5\u88ab\u63a8\u5bfc\u51fa<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u7136\u540e\u662f\u8fd9\u4e2a\u4f20\u9012\u4f9d\u8d56\u51fd\u6570\uff0c\u8fd9\u91cc\u5f88\u76f4\u89c2\u554a
            \n\u5b66\u53f7\u63a8\u51fa\u5b66\u751f\u6240\u5728\u7684\u7cfb\uff0c\u5b66\u751f\u6240\u5728\u7684\u7cfb\u63a8\u51fa\u7cfb\u8d1f\u8d23\u4eba
            \n\u90a3\u4e48\u5c31\u53ef\u4ee5\u4f20\u9012\u4f9d\u8d56\u63a8\u5bfc\u51fa\u5b66\u751f\u5b66\u53f7\u63a8\u5bfc\u51fa\u7cfb\u8d1f\u8d23\u4eba\u540d\u5b57<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u7136\u540e\u662f\u8fd9\u4e2a\u591a\u503c\u51fd\u6570\u4f9d\u8d56\u554a
            \n\u8fd9\u4e2a\u8ddf\u6211\u4eec\u540e\u9762\u76844NF\u6709\u5173\u7cfb<\/p>\n

            \u8fd9\u4e0a\u9762\u90fd\u8f66\u8f71\u8f98\u8bdd\u6211\u4eec\u76f4\u63a5skip<\/p>\n

            \u6bd4\u5982\u6211\u4eec\u5b58\u5728\u8fd9\u4e48\u4e00\u4e2a\u5173\u7cfb\u96c6\u5408<\/p>\n\n\n\n\n\n\n\n\n
            \u8001\u5e08 (A)<\/strong><\/th>\n\u8bfe\u7a0b (B)<\/strong><\/th>\n\u7231\u597d (C)<\/strong><\/th>\n<\/tr>\n<\/thead>\n
            \u5f20\u8001\u5e08<\/td>\n\u6570\u636e\u5e93<\/td>\n\u7bee\u7403<\/td>\n<\/tr>\n
            \u5f20\u8001\u5e08<\/td>\n\u64cd\u4f5c\u7cfb\u7edf<\/td>\n\u7bee\u7403<\/td>\n<\/tr>\n
            \u5f20\u8001\u5e08<\/td>\n\u6570\u636e\u5e93<\/td>\n\u6e38\u6cf3<\/td>\n<\/tr>\n
            \u5f20\u8001\u5e08<\/td>\n\u64cd\u4f5c\u7cfb\u7edf<\/td>\n\u6e38\u6cf3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \u5176\u4e2d\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5f20\u8001\u5e08\u63a8\u5bfc\u51fa\uff08\u6570\u636e\u5e93\uff0c\u64cd\u4f5c\u7cfb\u7edf\uff09\uff0c\u5373\u8001\u5e08\uff0c\u8bfe\u7a0b\u8868\uff0c\u8fd9\u4e2a\u4f9d\u8d56\u5173\u7cfb\u548c\u7231\u597d\u65e0\u5173
            \n\u8fd8\u6709\u4e00\u4e2a\u662f\u8001\u5e08\uff0c\u7231\u597d\u8868\uff0c\u4e5f\u5c31\u662f\uff08\u7bee\u7403\uff0c\u6e38\u6cf3\uff09\uff0c\u540c\u6837\u8fd9\u4e2a\u4f9d\u8d56\u5173\u7cfb\u548c\u8bfe\u7a0b\u65e0\u5173<\/p>\n

            \u8fd9\u540c\u65f6\u4e5f\u4f53\u73b0\u4e86\u6211\u4eec\u591a\u503c\u4f9d\u8d56\u7684\u5bf9\u79f0\u6027
            \n\u5373\u5173\u7cfbR\uff08A,B,C\uff09\u4e2d
            \n\u82e5A–>B\uff0c\u5219\u5fc5\u6709A–>C\uff0c\u4e14C\u4e3aR-A-B<\/p>\n

            \u54e6\u5bf9\u4e86\u6211\u4eec\u8fd9\u91cc\u591a\u503c\u4f9d\u8d56\u7684\u7b26\u53f7\u5c31\u662fA–>B\u8fd9\u6837\u7684
            \n\uff08\u5f53\u7136\u4e5f\u6709\u5e73\u51e1\u548c\u975e\u5e73\u51e1\u4e4b\u5206\uff09<\/p>\n

            \u4ee5\u53ca\u6211\u4eec\u591a\u503c\u4f20\u9012\u8fd8\u5b58\u5728\u4e00\u4e2a\u4f20\u9012\u6027
            \n\u5f53\u6211\u4eec\u5b58\u5728A–>B,B–>C
            \n\u90a3\u4e48\u5c31\u6709A–>CB\uff08C\u5254\u9664B\u7684\u90e8\u5206\uff09
            \n\u8fd9\u91ccCB\u7684\u610f\u601d\u5c31\u662fC\u4e2d\u6ca1\u6709B\u7684\u90e8\u5206<\/p>\n

            OK\u5566\u8bb2\u5b8c\u8fd9\u4e00Part\u4e86\uff0c\u63a5\u4e0b\u6765\u8fd8\u6709\u4ee8\u89c6\u9891\u660e\u5929\u53ef\u80fd\u80fd\u770b\u5b8c\u7136\u540e\u505a\u5b8c\u7b14\u8bb0\uff0c\u7136\u540e\u5c31\u8fdb\u5165\u5237\u9898\u9636\u6bb5\uff0c\u6211\u611f\u89c9\u8fd9\u4e2a\u8bfe\u5b9e\u5728\u662f\u592a\u5570\u55e6\u4e86\u5bb3<\/p>\n

            Armstrong\u516c\u91cc\u7cfb\u7edf<\/h2>\n

            \u554a\u3002\u3002\u3002\u5012\u6570\u7b2c\u4e09\u7ae0\u4e86\u6211\u4eec\u901f\u901f\u8fc7\u4e00\u4e0b\uff0c\u5176\u5b9e\u6bcf\u4e2a\u89c6\u9891\u90fd\u670990%\u7684\u5185\u5bb9\u5145\u6ee1\u6c34\u5206<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u9996\u5148\u5c31\u662f\u8fd9\u4e2a\u51e0\u4e2a\u57fa\u672c\u5b9a\u5f8b
            \n\u5c31\u8bbe\u5b9a\u4e00\u4e2a\u5173\u7cfb\u6a21\u5f0fR\uff08U,F)
            \nU\u662fR\u5c5e\u6027\u7684\u5168\u96c6,F\u662f\u5173\u7cfb\u6a21\u5f0fR\u7684\u4f9d\u8d56\u96c6
            \n\u90a3\u4e48\u6839\u636e\u516c\u7406\u6709
            \n\u81ea\u53cd\u5f8b\uff1a\u5982\u679cY\u2208X\u2208U\uff0c\u5219X->Y\u4e3aF\u6240\u51fd\u6570\u8574\u542b
            \n\u589e\u5e7f\u5f8b\uff1a\u5982\u679cX->Y\u4e3aF\u6240\u51fd\u6570\u8574\u542b\uff0c\u4e14Z\u2208U\uff0c\u5219XZ->YZ\u4e3aF\u6240\u51fd\u6570\u8574\u542b
            \n\u4f20\u9012\u7387\uff1a\u82e5X->Y\u548cY->Z\u4e3aF\u6240\u51fd\u6570\u8574\u542b\uff0c\u5219X->Z\u4e3aF\u6240\u51fd\u6570\u8574\u542b<\/p>\n

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            \u90a3\u63a5\u4e0b\u6765\u5c31\u662f\u6839\u636e\u4e0a\u9762\u51e0\u4e2a\u516c\u7406\u62d3\u5c55\u51fa\u6765\u7684<\/p>\n

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            \n\u4f2a\u4f20\u9012\u5f8b\uff0c\u82e5X->Y,\u4e14WY->Z\uff0c\u5219XW->Z\u4e3aF\u6240\u8574\u542b\uff0c\u62c6\u5f00\u6765\u770b\u7684\u8bdd\u5c31\u662fX->Y\u8fd9\u4e2a\u5173\u7cfb\u4e24\u8fb9\u540c\u4e58\u4e00\u4e2aW\uff0c\u5c31\u6709XW->WY\uff0c\u53c8\u56e0\u4e3aWY->Z\uff0c\u90a3\u4e48\u5c31\u6709XW->Z
            \n\u6700\u540e\u4e00\u4e2a\u662f\u5206\u89e3\u89c4\u5219\uff0c\u82e5X->Y\uff0c\u4e14Z\u2208Y\uff0c\u5219X->Z\u4e3aF\u6240\u51fd\u6570\u8574\u542b\uff0c\u90a3\u8fd9\u5c31\u76f4\u63a5\u662f\u4e0a\u9762\u7684\u4f20\u9012\u5f8b\u7684\u62d3\u5c55\u4e86<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u63a5\u4e0b\u6765\u662f\u95ed\u5305\uff0c\u51fd\u6570\u95ed\u5305\u5c31\u662f\u6211\u8fd9\u4e2a\u5173\u7cfb\u6a21\u5f0f\u79cd\u6240\u6709\u7684\u51fd\u6570\u4f9d\u8d56\u5173\u7cfb\u7684\u5168\u96c6<\/p>\n

            \u90a3\u5c5e\u6027\u95ed\u5305\u5c31\u662f\u6211\u80fd\u591f\u6839\u636e\u5c5e\u6027\u96c6\u5185\u63a8\u5bfc\u51fa\u6765\u7684\u5b57\u6bb5\u6784\u6210\u7684\u96c6\u5408<\/p>\n

            \u4e2b\u7684\u6211\u53d1\u73b0\u8fd9\u4e9b\u89c6\u9891\u771f\u7684\u662f\u5e9f\u8bdd\u4e00\u5927\u5806<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u7b80\u5355\u6765\u8bf4\u5c31\u662f\u7c7b\u4f3cX->Y\u8fd9\u5f20\uff0cY\u90e8\u5206\u4e0d\u80fd\u6709\u591a\u4f59\u7684\u5c5e\u6027\uff0c\u4ec5\u80fd\u6709\u4e00\u4e2a\u5c5e\u6027
            \n\u7136\u540e\u4e0d\u80fd\u6709\u4f20\u9012\u4f9d\u8d56
            \n\u5de6\u4fa7\u4e5f\u4e0d\u80fd\u6709\u591a\u4f59\u5c5e\u6027\uff0c\u4e5f\u5c31\u662f\u4e0d\u80fd\u5b58\u5728\u90e8\u5206\u51fd\u6570\u4f9d\u8d56<\/p>\n

            \"Pasted<\/div><\/figure>\n
            \"Pasted<\/div><\/figure>\n

            \u76f4\u63a5\u53c2\u8003\u56fe\u4e2d\u7684\u5173\u7cfb\u5c31\u53ef\u4ee5\u4e86
            \n\u5c31\u662f\u6211\u4ece\u4e00\u4e2a\u5165\u5ea6\u4e3a0\u7684\u5c5e\u6027\u51fa\u53d1\u53ef\u4ee5\u904d\u5386\u5168\u56fe\uff0c\u90a3\u4e48\u4ed6\u5c31\u662f\u552f\u4e00\u5019\u9009\u7801
            \n\u5426\u5219\u5c31\u662f\u548c\u5176\u4ed6\u4e00\u8d77\u80fd\u591f\u904d\u5386\u5168\u56fe\u7684\u6784\u6210\u5019\u9009\u7801\u96c6<\/p>\n

            \u89c4\u8303\u5316<\/h2>\n

            \u8fd9\u4e2a\u5c31\u66f4\u4e0d\u9700\u8981\u770b\u89c6\u9891\u4e86\uff0c\u4e2b\u7684\u6574\u4e2a\u89c6\u9891\u534a\u4e2a\u591a\u5c0f\u65f6\u624d\u8bb2\u52304NF\u7eaf\u7cb9\u662f\u6d6a\u8d39\u65f6\u95f4\u554a\u6211\u770b<\/p>\n

            \u9996\u5148\u662f1NF
            \n\u8981\u6c42\u662f \u6bcf\u4e2a\u5b57\u6bb5\u90fd\u662f\u539f\u5b50\u503c\uff0c\u4e0d\u53ef\u518d\u5206<\/strong>
            \n\u4ec0\u4e48\u610f\u601d\u5462?
            \n\u5c31\u6bd4\u5982\u8fdd\u53cd1NF\u7684\u50cf<\/p>\n\n\n\n\n\n\n\n
            \u5b66\u53f7<\/th>\n\u59d3\u540d<\/th>\n\u7535\u8bdd<\/th>\n<\/tr>\n<\/thead>\n
            001<\/td>\n\u5f20\u4e09<\/td>\n139XXX, 189XXX<\/td>\n<\/tr>\n
            \u8fd9\u79cd\u4e00\u4e2a\u5b58\u6709\u6570\u7ec4\u7684\u5c31\u8fdd\u53cd<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
            \u8fd9\u91cc\u53ea\u80fd\u62c6\u6210<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n
            \u5b66\u53f7<\/th>\n\u59d3\u540d<\/th>\n\u7535\u8bdd<\/th>\n<\/tr>\n<\/thead>\n
            001<\/td>\n\u5f20\u4e09<\/td>\n139XXX<\/td>\n<\/tr>\n
            001<\/td>\n\u5f20\u4e09<\/td>\n189XXX<\/td>\n<\/tr>\n
            \u8fd9\u6837\u624d\u7b26\u54081NF<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \u63a5\u4e0b\u6765\u662f2NF<\/p>\n

            \u8981\u6c42\u662f \u5728\u6ee1\u8db31NF\u7684\u524d\u63d0\u4e0b\uff0c\u975e\u4e3b\u5c5e\u6027\u5fc5\u987b\u5b8c\u5168\u4f9d\u8d56\u4e8e\u5019\u9009\u952e\uff0c\u4e14\u4e0d\u80fd\u53ea\u4f9d\u8d56\u4e8e\u5019\u9009\u952e\u7684\u4e00\u90e8\u5206<\/strong><\/p>\n

            \u4e3e\u4e2a\u4f8b\u5b50\uff0c\u8fdd\u53cd2NF\u7684\u60c5\u51b5\u5c31\u662f<\/p>\n\n\n\n\n\n\n
            \u5b66\u53f7<\/th>\n\u8bfe\u7a0b<\/th>\n\u59d3\u540d<\/th>\n\u6210\u7ee9<\/th>\n<\/tr>\n<\/thead>\n
            001<\/td>\nC01<\/td>\n\u5f20\u4e09<\/td>\n90<\/td>\n<\/tr>\n
            \u8fd9\u79cd\u5c31\u8fdd\u53cd\u4e862NF\uff0c\u56e0\u4e3a\u6211\u4eec\u8fd9\u91cc\u7684\u4e3b\u952e\u662f\uff08\u5b66\u53f7\uff0c\u8bfe\u7a0b\u53f7\uff09\uff0c\u4f46\u59d3\u540d\u53ea\u4f9d\u8d56\u4e8e\u5b66\u53f7\uff0c\u5b58\u5728\u90e8\u4efd\u4f9d\u8d56\uff0c\u6240\u4ee5\u8fdd\u53cd\u4e862NF<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \u9700\u8981\u62c6\u5206\u6210<\/p>\n\n\n\n\n\n\n\n
            \u5b66\u53f7<\/th>\n\u59d3\u540d<\/th>\n<\/tr>\n<\/thead>\n
            001<\/td>\n\u5f20\u4e09<\/td>\n<\/tr>\n
            \u5373\u59d3\u540d\u4ec5\u4f9d\u8d56\u5b66\u53f7<\/td>\n<\/td>\n<\/tr>\n
            \u4ee5\u53ca<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n
            \u5b66\u53f7<\/th>\n\u8bfe\u7a0b\u53f7<\/th>\n\u6210\u7ee9<\/th>\n<\/tr>\n<\/thead>\n
            001<\/td>\nC01<\/td>\n90<\/td>\n<\/tr>\n
            \u5373\u6210\u7ee9\u4f9d\u8d56\u5b66\u53f7\u548c\u8bfe\u7a0b\u53f7<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \u603b\u7684\u6765\u8bf42NF\u5c31\u662f\u6d88\u9664\u90e8\u5206\u4f9d\u8d56\uff0c\u907f\u514d\u6570\u636e\u5197\u4f59\u548c\u66f4\u65b0\u5f02\u5e38<\/p>\n

            \u63a5\u4e0b\u6765\u662f3NF
            \n\u8981\u6c42\u662f \u6ee1\u8db32NF\u7684\u524d\u63d0\u4e0b\uff0c\u975e\u4e3b\u5c5e\u6027\u4e4b\u95f4\u4e0d\u80fd\u5b58\u5728\u4f20\u9012\u4f9d\u8d56<\/strong><\/p>\n

            \u5373\u4e0d\u80fd\u51fa\u73b0\uff1a \u4e3b\u952e->A->B\u8fd9\u79cd\u60c5\u51b5<\/p>\n

            \u7ecf\u5178\u7684\u8fdd\u53cd3NF\u7684\u5c31\u662f<\/p>\n\n\n\n\n\n\n\n\n\n\n
            \u5b66\u53f7<\/th>\n\u7cfb\u540d<\/th>\n\u7cfb\u4e3b\u4efb<\/th>\n<\/tr>\n<\/thead>\n
            001<\/td>\n\u8ba1\u7b97\u673a\u7cfb<\/td>\n\u674e\u6559\u6388<\/td>\n<\/tr>\n
            \u90a3\u4e48\u8fd9\u91cc\u5c31\u662f\u5b66\u53f7\u4e3a\u4e3b\u952e<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
            \u53ef\u4ee5\u6709\u5b66\u53f7->\u7cfb\u540d->\u7cfb\u4e3b\u4efb<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
            \u5b58\u5728\u975e\u4e3b\u5c5e\u6027\u7684\u4f20\u9012\u4f9d\u8d56\uff0c\u5219\u4e0d\u6ee1\u8db33NF<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
            \u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u628a\u8868\u62c6\u6210\uff08\u5b66\u53f7\uff0c\u7cfb\u540d\uff09\u548c\uff08\u7cfb\u540d\uff0c\u7cfb\u4e3b\u4efb\uff09<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
            \u5c31\u53ef\u4ee5\u4e86<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \u7136\u540e\u662f\u7279\u6b8a\u7684BCNF\uff0c\u53733NF\u7684\u52a0\u5f3a\u7248
            \n\u8981\u6c42 \u5bf9\u4e8e\u6bcf\u4e2a\u51fd\u6570\u4f9d\u8d56X->Y\uff0cX\u5fc5\u987b\u662f\u5019\u9009\u952e<\/strong>
            \n3NF\u53ea\u4fdd\u62a4\u975e\u4e3b\u5c5e\u6027\uff0c\u4f46BCNF\u8fde\u4e3b\u5c5e\u6027\u90fd\u4fdd\u62a4<\/p>\n

            \u4e00\u822c\u6ee1\u8db33NF\u4f46\u8fdd\u53cdBCNF\u7684\u4f8b\u5b50\u6709<\/p>\n\n\n\n\n\n\n\n\n
            \u5b66\u751f<\/th>\n\u8001\u5e08<\/th>\n\u8bfe\u7a0b<\/th>\n<\/tr>\n<\/thead>\n
            \u5f20\u4e09<\/td>\n\u738b\u8001\u5e08<\/td>\n\u6570\u5b66<\/td>\n<\/tr>\n
            \u5019\u9009\u952e\u6709\uff08\u5b66\u751f\uff0c\u8001\u5e08\uff09\u548c\uff08\u5b66\u751f\uff0c\u8bfe\u7a0b\uff09<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
            \u4f46\u5b58\u5728\u8001\u5e08->\u8bfe\u7a0b\uff0c\u8001\u5e08\u4e0d\u662f\u5019\u9009\u952e\uff0c\u8fdd\u53cd\u4e86BCNF<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
            \u8fd9\u91cc\u53ea\u9700\u8981\u62c6\u5206\u6210\uff08\u5b66\u751f\uff0c\u8001\u5e08\uff09\u548c\uff08\u8001\u5e08\uff0c\u8bfe\u7a0b\uff09\u8fd9\u4fe9\u4e2a\u8868\u5373\u53ef<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \u6700\u540e\u662f4NF
            \n\u8981\u6c42 \u6ee1\u8db3BCNF\u7684\u524d\u63d0\u4e0b\uff0c\u4e0d\u80fd\u5b58\u5728\u975e\u5e73\u51e1\u7684\u591a\u503c\u4f9d\u8d56<\/strong>
            \n\u90a3\u6211\u4eec\u4e4b\u524d\u4e5f\u8bb2\u8fc7\u4e86\u975e\u5e73\u51e1\u7684\u591a\u503c\u4f9d\u8d56\u662f\u4ec0\u4e48\u4e86
            \n\u7ecf\u5178\u7684\u8fdd\u53cd\u591a\u503c\u4f9d\u8d56\u7684\u6848\u4f8b\u957f\u8fd9\u6837<\/p>\n\n\n\n\n\n\n\n\n\n
            \u5458\u5de5<\/th>\n\u6280\u80fd<\/th>\n\u7231\u597d<\/th>\n<\/tr>\n<\/thead>\n
            \u5f20\u4e09<\/td>\nJava<\/td>\n\u8db3\u7403<\/td>\n<\/tr>\n
            \u5f20\u4e09<\/td>\nJava<\/td>\n\u7bee\u7403<\/td>\n<\/tr>\n
            \u5f20\u4e09<\/td>\nPython<\/td>\n\u8db3\u7403<\/td>\n<\/tr>\n
            \u5f20\u4e09<\/td>\nPython<\/td>\n\u7bee\u7403<\/td>\n<\/tr>\n
            \u8fd9\u79cd\u6280\u80fd\u4e0e\u7231\u597d\u5197\u4f59\u5374\u5f3a\u884c\u653e\u5728\u4e00\u5f20\u8868\u4e2d\uff0c\u4ea7\u751f\u7b1b\u5361\u5c14\u79ef\u5f0f\u5197\u4f59<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            \u89e3\u51b3\u65b9\u6cd5\u5c31\u662f\u628a\u8868\u62c6\u6210
            \n\uff08\u5458\u5de5\uff0c\u6280\u80fd\uff09\u548c\uff08\u5458\u5de5\uff0c\u7231\u597d\uff09
            \n\u5c31\u53ef\u4ee5\u4e86<\/p>\n

            \u6a21\u5f0f\u5206\u89e3<\/h2>\n

            \u592a\u597d\u4e86\u8fd9\u662f\u6700\u540e\u4e00\u4e2a\u89c6\u9891\u4e86<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u9996\u5148\u662f\u6a21\u5f0f\u5206\u89e3\u7684\u5b9a\u4e49\u554a
            \n\u6211\u4eec\u5728\u62c6\u5206\u8868\u7684\u65f6\u5019\u4e0d\u80fd\u968f\u4fbf\u62c6\u5206
            \n\u65e2\u8981\u4fdd\u6301\u65e0\u635f\u8fde\u63a5\u8fd8\u8981\u4fdd\u6301\u51fd\u6570\u4f9d\u8d56<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u4e3e\u4e2a\u4f8b\u5b50
            \n\u50cf\u4e0a\u9762\u8fd9\u79cd\u5173\u7cfb\u6a21\u5f0f\u4e00\u822c\u53ef\u4ee5\u62c6\u6210\u90a3\u4e0b\u9762\u7684\u56db\u79cd\u7ec4\u5408\uff08\u6709\u70b9\u7c7b\u4f3c\u6392\u5217\u7ec4\u5408\u7684\u611f\u89c9\u5427\uff09<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u7136\u540e\u5c31\u662f\u65e0\u635f\u8fde\u63a5\u7684\u5b9a\u4e49
            \n\u5176\u5b9e\u53ea\u8981\u628a\u8fd9\u4e2a\u516c\u5f0f\u8bb0\u4e00\u4e0b\u5c31OK\u4e86
            \n\u4e5f\u5c31\u662f\u6211\u4eec\u8981\u6c42\u8868\u5728\u5206\u89e3\u540e\u53ef\u4ee5\u901a\u8fc7\u81ea\u7136\u8fde\u63a5\u6765\u8fd8\u539f\u6211\u4eec\u539f\u672c\u7684\u8868\u7684<\/p>\n

            \"Pasted<\/div><\/figure>\n

            \u6bd4\u5982\u8bf4\u5728\u8fd9\u4e2a\u6848\u4f8b\u91cc\u9762
            \n\u6211\u4eec\u628a\u539f\u672c\u5e26\u6709\uff08sno,sdept,mname)\u8fd9\u4e09\u4e2a\u5c5e\u6027\u7684\u8868\u62c6\u5206\u6210
            \n\uff08sno,nname)\u548c(sdept\u548cmname)\u8fd9\u4fe9\u4e2a\u8868
            \n\u8fd9\u65f6\u5019\u518d\u5c06\u4fe9\u4e2a\u8868\u81ea\u7136\u8fde\u63a5\uff0c\u5c31\u4f1a\u83ab\u540d\u5176\u5999\u591a\u51fa\u4fe9\u4e2a\u5728\u539f\u8868\u4e2d\u4e0d\u5b58\u5728\u7684\u6570\u636e<\/p>\n

            \u8fd9\u91cc\u53ef\u4ee5\u901a\u8fc7\u4e0a\u9762\u7684\u516c\u5f0f\u8ba1\u7b97\u51fa\u6765
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