{"id":91,"date":"2026-04-02T21:33:12","date_gmt":"2026-04-02T21:33:12","guid":{"rendered":"https:\/\/www.we-notes.com\/tw\/reverse-engineer-database-er-diagram\/"},"modified":"2026-04-02T21:33:12","modified_gmt":"2026-04-02T21:33:12","slug":"reverse-engineer-database-er-diagram","status":"publish","type":"post","link":"https:\/\/www.we-notes.com\/tw\/reverse-engineer-database-er-diagram\/","title":{"rendered":"\u6559\u7a0b\uff1a\u5c07\u6df7\u4e82\u7684\u8cc7\u6599\u5eab\u53cd\u5411\u5de5\u7a0b\u8f49\u63db\u70ba\u4e7e\u6de8\u7684\u5be6\u9ad4\u95dc\u4fc2\u5716\u7d50\u69cb"},"content":{"rendered":"<p>\u8cc7\u6599\u5eab\u7d50\u69cb\u901a\u5e38\u6703\u81ea\u7136\u6f14\u8b8a\uff0c\u800c\u975e\u7d93\u904e\u523b\u610f\u8a2d\u8a08\u3002\u96a8\u8457\u6642\u9593\u63a8\u79fb\uff0c\u5feb\u901f\u7684\u958b\u767c\u9031\u671f\u3001\u7f3a\u4e4f\u6587\u4ef6\u7d00\u9304\u4ee5\u53ca\u4e0d\u65b7\u8b8a\u52d5\u7684\u5546\u696d\u9700\u6c42\uff0c\u5c0e\u81f4\u7d50\u69cb\u8b8a\u5f97\u8907\u96dc\u4e14\u96e3\u4ee5\u5c0e\u822a\u3002\u8a31\u591a\u7d44\u7e54\u767c\u73fe\u81ea\u5df1\u7e7c\u627f\u4e86\u820a\u7cfb\u7d71\uff0c\u539f\u59cb\u8a2d\u8a08\u5e2b\u5df2\u4e0d\u5728\uff0c\u800c\u8cc7\u6599\u6a21\u578b\u5247\u56e0\u591a\u5e74\u4f86\u7684\u4fee\u88dc\u8207\u7dca\u6025\u4fee\u5fa9\u800c\u8b8a\u5f97\u6a21\u7cca\u4e0d\u6e05\u3002\u6b64\u904e\u7a0b\u6d89\u53ca\u5206\u6790\u73fe\u6709\u7684\u8cc7\u6599\u5c64\uff0c\u4e26\u5c07\u5176\u91cd\u69cb\u70ba\u6a19\u6e96\u5316\u7684\u5be6\u9ad4\u95dc\u4fc2\u5716\uff08ERD\uff09\u3002\u76ee\u6a19\u662f\u5be6\u73fe\u6e05\u6670\u6027\u3001\u53ef\u7dad\u8b77\u6027\u8207\u5b8c\u6574\u6027\u3002<\/p>\n<p>\u53cd\u5411\u5de5\u7a0b\u8cc7\u6599\u5eab\u4e0d\u50c5\u50c5\u662f\u7c21\u55ae\u5730\u5728\u8868\u683c\u4e4b\u9593\u756b\u7dda\uff1b\u66f4\u91cd\u8981\u7684\u662f\u7406\u89e3\u8cc7\u6599\u4e2d\u5167\u5d4c\u7684\u5546\u696d\u908f\u8f2f\u3002\u4e00\u500b\u4e7e\u6de8\u7684ERD\u53ef\u4f5c\u70ba\u672a\u4f86\u958b\u767c\u7684\u85cd\u5716\u3001\u5229\u76ca\u76f8\u95dc\u8005\u4e4b\u9593\u7684\u6e9d\u901a\u5de5\u5177\uff0c\u4ee5\u53ca\u9632\u6b62\u8cc7\u6599\u640d\u58de\u7684\u4fdd\u969c\u3002\u672c\u6307\u5357\u8a73\u7d30\u8aaa\u660e\u4e86\u5c07\u6df7\u4e82\u7684\u7d50\u69cb\u8f49\u63db\u70ba\u6709\u7d44\u7e54\u3001\u5df2\u898f\u7bc4\u5316\u7684\u8a2d\u8a08\u7684\u6280\u8853\u6d41\u7a0b\uff0c\u4e14\u4e0d\u4f9d\u8cf4\u7279\u5b9a\u7684\u5c08\u6709\u5de5\u5177\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Hand-drawn infographic illustrating the 7-phase workflow for reverse engineering a messy database into a clean ER diagram: Schema Discovery with metadata extraction, Entity Identification applying 1NF\/2NF\/3NF normalization, Relationship Mapping with Crow's Foot notation for 1:1\/1:N\/M:N cardinality, Data Integrity constraints (foreign keys, unique, check, NOT NULL), ERD Visualization best practices, Documentation and version control strategies, and Validation testing steps. Visual transformation from chaotic 'spaghetti schema' to organized entity-relationship structure with anti-pattern warnings and key takeaways for database governance.\" decoding=\"async\" src=\"https:\/\/www.we-notes.com\/wp-content\/uploads\/2026\/04\/reverse-engineer-database-erd-infographic-hand-drawn.jpg\"\/><\/figure>\n<\/div>\n<h2>\u70ba\u4f55\u8cc7\u6599\u5eab\u6703\u8b8a\u5f97\u6df7\u4e82 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\ud83d\udd0d<\/h2>\n<p>\u5728\u756b\u4efb\u4f55\u7dda\u689d\u4e4b\u524d\uff0c\u4f60\u5fc5\u9808\u4e86\u89e3\u8cc7\u6599\u5eab\u7684\u7576\u524d\u72c0\u614b\u3002\u6b64\u968e\u6bb5\u5c08\u6ce8\u65bc\u8cc7\u6599\u63d0\u53d6\u8207\u5206\u6790\uff0c\u800c\u975e\u4fee\u6539\u3002<\/p>\n<h3>\u63d0\u53d6\u5143\u8cc7\u6599<\/h3>\n<p>\u6bcf\u500b\u95dc\u806f\u5f0f\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u90fd\u7dad\u8b77\u7cfb\u7d71\u76ee\u9304\u6216\u8cc7\u8a0a\u7d50\u69cb\u6aa2\u8996\u3002\u9019\u4e9b\u5132\u5b58\u5eab\u5305\u542b\u6709\u95dc\u8868\u683c\u3001\u6b04\u4f4d\u3001\u8cc7\u6599\u985e\u578b\u3001\u7d04\u675f\u8207\u7d22\u5f15\u7684\u8a73\u7d30\u8cc7\u8a0a\u3002\u8acb\u4f7f\u7528\u67e5\u8a62\u4ecb\u9762\u4f86\u53d6\u5f97\u9019\u4e9b\u5143\u8cc7\u6599\u3002<\/p>\n<ul>\n<li><strong>\u8868\u683c\u6e05\u55ae\uff1a<\/strong>\u53d6\u5f97\u6240\u6709\u8868\u683c\u540d\u7a31\u53ca\u5176\u5efa\u7acb\u65e5\u671f\uff0c\u4ee5\u8b58\u5225\u820a\u6709\u7d50\u69cb\u3002<\/li>\n<li><strong>\u6b04\u4f4d\u5b9a\u7fa9\uff1a<\/strong>\u63d0\u53d6\u6b04\u4f4d\u540d\u7a31\u3001\u8cc7\u6599\u985e\u578b\u3001\u662f\u5426\u53ef\u70ba\u7a7a\u503c\u4ee5\u53ca\u9810\u8a2d\u503c\u3002<\/li>\n<li><strong>\u7d04\u675f\uff1a<\/strong>\u8b58\u5225\u4e3b\u9375\u3001\u552f\u4e00\u6027\u7d04\u675f\u4ee5\u53ca\u5916\u9375\u95dc\u4fc2\u3002\u8acb\u6ce8\u610f\uff0c\u67d0\u4e9b\u95dc\u4fc2\u53ef\u80fd\u50c5\u5728\u61c9\u7528\u7a0b\u5f0f\u5c64\u7d1a\u5f37\u5236\u57f7\u884c\uff0c\u800c\u975e\u5728\u8cc7\u6599\u5eab\u4e2d\u3002<\/li>\n<li><strong>\u7d22\u5f15\uff1a<\/strong>\u5206\u6790\u73fe\u6709\u7684\u7d22\u5f15\uff0c\u4ee5\u4e86\u89e3\u67e5\u8a62\u6548\u80fd\u6a21\u5f0f\uff0c\u4e26\u8b58\u5225\u53ef\u80fd\u7684\u5019\u9078\u9375\u3002<\/li>\n<\/ul>\n<h3>\u8cc7\u6599\u5206\u6790<\/h3>\n<p>\u5143\u8cc7\u6599\u544a\u8a34\u4f60\u7d50\u69cb\u300c\u61c9\u8a72\u300d\u662f\u4ec0\u9ebc\u6a23\u5b50\uff0c\u4f46\u8cc7\u6599\u5206\u6790\u5247\u544a\u8a34\u4f60\u5b83\u300c\u5be6\u969b\u4e0a\u300d\u662f\u4ec0\u9ebc\u6a23\u5b50\u3002\u6383\u63cf\u5be6\u969b\u7684\u8cc7\u6599\u503c\u80fd\u63ed\u793a\u51fa\u7d50\u69cb\u5b9a\u7fa9\u6240\u5ffd\u7565\u7684\u4e0d\u4e00\u81f4\u4e4b\u8655\u3002<\/p>\n<ul>\n<li><strong>\u503c\u5206\u4f48\uff1a<\/strong>\u6aa2\u67e5\u9ad8\u57fa\u6578\u6216\u4f4e\u57fa\u6578\u7684\u6b04\u4f4d\uff0c\u9019\u4e9b\u53ef\u80fd\u6697\u793a\u9700\u8981\u9032\u884c\u898f\u7bc4\u5316\u3002<\/li>\n<li><strong>\u7a7a\u503c\u7387\uff1a<\/strong>\u5fc5\u8981\u6b04\u4f4d\u4e2d\u51fa\u73fe\u9ad8\u6bd4\u4f8b\u7684\u7a7a\u503c\uff0c\u8868\u793a\u53ef\u80fd\u5b58\u5728\u907a\u6f0f\u7684\u7d04\u675f\u689d\u4ef6\u6216\u8cc7\u6599\u8f38\u5165\u7fd2\u6163\u4e0d\u4f73\u3002<\/li>\n<li><strong>\u8cc7\u6599\u54c1\u8cea\uff1a<\/strong>\u8b58\u5225\u683c\u5f0f\u4e0d\u4e00\u81f4\u7684\u554f\u984c\uff0c\u4f8b\u5982\u96fb\u8a71\u865f\u78bc\u4ee5\u4e0d\u540c\u683c\u5f0f\u5132\u5b58\u70ba\u6587\u5b57\u8cc7\u6599\u3002<\/li>\n<\/ul>\n<h2>\u7b2c\u4e8c\u968e\u6bb5\uff1a\u5be6\u9ad4\u8b58\u5225\u8207\u6a19\u6e96\u5316 \ud83e\uddf1<\/h2>\n<p>\u7576\u539f\u59cb\u8cc7\u6599\u88ab\u7406\u89e3\u5f8c\uff0c\u4e0b\u4e00\u6b65\u662f\u908f\u8f2f\u91cd\u69cb\u3002\u9019\u5305\u62ec\u8b58\u5225\u5be6\u9ad4\u4e26\u5957\u7528\u6a19\u6e96\u5316\u898f\u5247\uff0c\u4ee5\u6e1b\u5c11\u8cc7\u6599\u5197\u9918\u3002<\/p>\n<h3>\u8b58\u5225\u5be6\u9ad4<\/h3>\n<p>\u5be6\u9ad4\u4ee3\u8868\u5546\u696d\u9818\u57df\u4e2d\u7684\u4e00\u500b\u660e\u78ba\u7269\u4ef6\u6216\u6982\u5ff5\u3002\u5728\u96dc\u4e82\u7684\u8cc7\u6599\u5eab\u4e2d\uff0c\u5be6\u9ad4\u901a\u5e38\u5206\u6563\u65bc\u591a\u500b\u8cc7\u6599\u8868\u4e2d\uff0c\u6216\u88ab\u932f\u8aa4\u5730\u5408\u4f75\u3002<\/p>\n<ul>\n<li><strong>\u7d30\u7c92\u5ea6\uff1a<\/strong>\u78ba\u4fdd\u6bcf\u500b\u8cc7\u6599\u8868\u50c5\u4ee3\u8868\u55ae\u4e00\u6982\u5ff5\u3002\u82e5\u8cc7\u6599\u8868\u540c\u6642\u5132\u5b58\u5ba2\u6236\u8cc7\u8a0a\u8207\u8a02\u55ae\u8cc7\u8a0a\uff0c\u5f88\u53ef\u80fd\u9055\u53cd\u6a19\u6e96\u5316\u539f\u5247\u3002<\/li>\n<li><strong>\u4e3b\u8981\u9375\uff1a<\/strong>\u70ba\u6bcf\u500b\u5be6\u9ad4\u5efa\u7acb\u552f\u4e00\u7684\u8b58\u5225\u78bc\u3002\u82e5\u81ea\u7136\u9375\uff08\u5982\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\uff09\u53ef\u80fd\u8b8a\u66f4\uff0c\u61c9\u907f\u514d\u4f7f\u7528\uff0c\u6539\u7528\u4ee3\u7406\u9375\u3002<\/li>\n<li><strong>\u547d\u540d\u6163\u4f8b\uff1a<\/strong>\u5c07\u8cc7\u6599\u8868\u540d\u7a31\u7d71\u4e00\u70ba\u4e00\u81f4\u7684\u683c\u5f0f\uff0c\u4f8b\u5982\u4f7f\u7528\u55ae\u6578\u540d\u8a5e\uff08\u4f8b\u5982 <code>\u5ba2\u6236<\/code> \u800c\u975e <code>\u5ba2\u6236\u5011<\/code>).<\/li>\n<\/ul>\n<h3>\u61c9\u7528\u6a19\u6e96\u5316<\/h3>\n<p>\u6a19\u6e96\u5316\u662f\u7d44\u7e54\u8cc7\u6599\u4ee5\u6e1b\u5c11\u5197\u9918\u4e26\u63d0\u5347\u5b8c\u6574\u6027\u7684\u4e00\u7a2e\u904e\u7a0b\u3002\u96d6\u7136\u76ee\u6a19\u672a\u5fc5\u7e3d\u662f\u9054\u5230\u7406\u8ad6\u4e0a\u7684\u6975\u9650\uff08\u535a\u4f0a\u65af-\u79d1\u5fb7\u6a19\u6e96\u5f62\u5f0f\uff09\uff0c\u4f46\u91dd\u5c0d\u4ea4\u6613\u7cfb\u7d71\uff0c\u8ffd\u6c42\u7b2c\u4e09\u6a19\u6e96\u5f62\u5f0f\uff083NF\uff09\u662f\u4e00\u9805\u7a69\u5065\u7684\u6a19\u6e96\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5f62\u5f0f<\/th>\n<th>\u5b9a\u7fa9<\/th>\n<th>\u76ee\u6a19<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u7b2c\u4e00\u6a19\u6e96\u5f62\u5f0f\uff081NF\uff09<\/strong><\/td>\n<td>\u6b04\u4f4d\u4e2d\u70ba\u539f\u5b50\u503c\uff1b\u7121\u91cd\u8907\u7fa4\u7d44\u3002<\/td>\n<td>\u78ba\u4fdd\u6bcf\u500b\u55ae\u5143\u683c\u50c5\u5305\u542b\u55ae\u4e00\u503c\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u7b2c\u4e8c\u6a19\u6e96\u5f62\u5f0f\uff082NF\uff09<\/strong><\/td>\n<td>\u7b26\u54081NF\uff0c\u4e26\u79fb\u9664\u90e8\u5206\u4f9d\u8cf4\u3002<\/td>\n<td>\u78ba\u4fdd\u975e\u9375\u5c6c\u6027\u4f9d\u8cf4\u65bc\u6574\u500b\u4e3b\u8981\u9375\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u7b2c\u4e09\u6a19\u6e96\u5f62\u5f0f\uff083NF\uff09<\/strong><\/td>\n<td>\u7b26\u5408\u7b2c\u4e8c\u7bc4\u5f0f\u4e26\u6d88\u9664\u50b3\u905e\u4f9d\u8cf4\u3002<\/td>\n<td>\u78ba\u4fdd\u975e\u9375\u5c6c\u6027\u50c5\u4f9d\u8cf4\u65bc\u4e3b\u9375\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u53cd\u5411\u5de5\u7a0b\u6642\uff0c\u8acb\u5c0b\u627e\u5132\u5b58\u503c\u6e05\u55ae\u7684\u6b04\u4f4d\uff08\u4f8b\u5982\uff0c\u4ee5\u9017\u865f\u5206\u9694\u7684\u6a19\u7c64\u5b57\u4e32\uff09\u3002\u9019\u4e9b\u5fc5\u9808\u62c6\u5206\u70ba\u95dc\u806f\u8868\u4e2d\u7684\u7368\u7acb\u8cc7\u6599\u5217\uff0c\u4ee5\u6eff\u8db3\u7b2c\u4e00\u7bc4\u5f0f\u3002\u540c\u6a23\u5730\uff0c\u63cf\u8ff0\u4e0d\u540c\u5be6\u9ad4\u7684\u5c6c\u6027\uff08\u4f8b\u5982\uff0c<code>\u7522\u54c1\u540d\u7a31<\/code> \u548c <code>\u4f9b\u61c9\u5546\u5730\u5740<\/code>\u4f4d\u65bc\u540c\u4e00\u5f35\u8868\u4e2d\u7684\u5c6c\u6027\uff09\u61c9\u5206\u96e2\u70ba\u7368\u7acb\u7684\u5be6\u9ad4\uff0c\u4ee5\u6eff\u8db3\u7b2c\u4e8c\u8207\u7b2c\u4e09\u7bc4\u5f0f\u3002<\/p>\n<h2>\u7b2c\u4e09\u968e\u6bb5\uff1a\u6620\u5c04\u95dc\u4fc2 \ud83d\udd17<\/h2>\n<p>\u95dc\u4fc2\u5b9a\u7fa9\u4e86\u5be6\u9ad4\u4e4b\u9593\u7684\u4e92\u52d5\u65b9\u5f0f\u3002\u5728\u96dc\u4e82\u7684\u8cc7\u6599\u5eab\u4e2d\uff0c\u9019\u4e9b\u95dc\u4fc2\u901a\u5e38\u96b1\u542b\u6216\u907a\u6f0f\u3002\u6b64\u968e\u6bb5\u6d89\u53ca\u5b9a\u7fa9\u9019\u4e9b\u9023\u63a5\u7684\u57fa\u6578\u8207\u53ef\u9078\u6027\u3002<\/p>\n<h3>\u57fa\u6578\u985e\u578b<\/h3>\n<ul>\n<li><strong>\u4e00\u5c0d\u4e00\uff081:1\uff09\uff1a<\/strong>\u8868 A \u4e2d\u7684\u4e00\u7b46\u8a18\u9304\u50c5\u8207\u8868 B \u4e2d\u7684\u4e00\u7b46\u8a18\u9304\u76f8\u95dc\u3002\u9019\u7a2e\u60c5\u6cc1\u8f03\u70ba\u7f55\u898b\uff0c\u901a\u5e38\u8868\u793a\u56e0\u5b89\u5168\u6216\u6548\u80fd\u539f\u56e0\u800c\u9032\u884c\u62c6\u5206\u3002<\/li>\n<li><strong>\u4e00\u5c0d\u591a\uff081:N\uff09\uff1a<\/strong>\u8868 A \u4e2d\u7684\u4e00\u7b46\u8a18\u9304\u8207\u8868 B \u4e2d\u7684\u591a\u7b46\u8a18\u9304\u76f8\u95dc\u3002\u9019\u662f\u6700\u5e38\u898b\u7684\u95dc\u4fc2\uff08\u4f8b\u5982\uff0c\u4e00\u4f4d\u5ba2\u6236\u4e0b\u591a\u7b46\u8a02\u55ae\uff09\u3002<\/li>\n<li><strong>\u591a\u5c0d\u591a\uff08M:N\uff09\uff1a<\/strong>\u8868 A \u4e2d\u7684\u591a\u7b46\u8a18\u9304\u8207\u8868 B \u4e2d\u7684\u591a\u7b46\u8a18\u9304\u76f8\u95dc\u3002\u9019\u9700\u8981\u4e00\u500b\u4e2d\u9593\u7684\u95dc\u806f\u8868\uff08\u4f8b\u5982\uff0c\u5b78\u751f\u8207\u8ab2\u7a0b\uff09\u3002<\/li>\n<\/ul>\n<h3>\u89e3\u6c7a\u591a\u5c0d\u591a\u95dc\u4fc2<\/h3>\n<p>\u96dc\u4e82\u7684\u8cc7\u6599\u5eab\u7d93\u5e38\u8a66\u5716\u900f\u904e\u91cd\u8907\u8cc7\u6599\u6216\u5efa\u7acb\u5305\u542b\u591a\u500b\u5916\u9375\u6b04\u4f4d\u7684\u5bec\u8868\u4f86\u8655\u7406\u591a\u5c0d\u591a\u95dc\u4fc2\u3002\u6b63\u78ba\u7684\u505a\u6cd5\u662f\u5f15\u5165\u4e00\u500b\u6a4b\u63a5\u8868\u3002<\/p>\n<ul>\n<li>\u8b58\u5225\u5169\u500b\u7236\u5be6\u9ad4\u3002<\/li>\n<li>\u5efa\u7acb\u4e00\u500b\u5305\u542b\u5169\u500b\u7236\u5be6\u9ad4\u4e3b\u9375\u7684\u65b0\u8868\u3002<\/li>\n<li>\u52a0\u5165\u8207\u95dc\u4fc2\u672c\u8eab\u76f8\u95dc\u7684\u4efb\u4f55\u7279\u5b9a\u5c6c\u6027\uff08\u4f8b\u5982\uff0c<code>\u8a3b\u518a\u65e5\u671f<\/code>\u5728\u5b78\u751f-\u8ab2\u7a0b\u6a4b\u63a5\u8868\u4e2d\uff09\u3002<\/li>\n<\/ul>\n<h2>\u7b2c\u56db\u968e\u6bb5\uff1a\u7d04\u675f\u8207\u8cc7\u6599\u5b8c\u6574\u6027 \ud83d\udd12<\/h2>\n<p>\u5982\u679c\u5716\u8868\u7121\u6cd5\u5f37\u5236\u57f7\u884c\u5176\u6240\u63cf\u8ff0\u7684\u898f\u5247\uff0c\u5247\u6beb\u7121\u7528\u8655\u3002\u7269\u7406\u5be6\u73fe\u5fc5\u9808\u900f\u904e\u7d04\u675f\u4f86\u53cd\u6620\u908f\u8f2f\u8a2d\u8a08\u3002<\/p>\n<ul>\n<li><strong>\u5916\u9375\uff1a<\/strong>\u660e\u78ba\u5b9a\u7fa9\u5916\u9375\u7d04\u675f\uff0c\u4ee5\u9632\u6b62\u5b64\u5152\u8a18\u9304\u3002\u9019\u53ef\u81ea\u52d5\u78ba\u4fdd\u53c3\u7167\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u552f\u4e00\u6027\u7d04\u675f\uff1a<\/strong>\u5c0d\u5fc5\u9808\u5177\u6709\u552f\u4e00\u6027\u7684\u6b04\u4f4d\u5957\u7528\u552f\u4e00\u6027\u7d04\u675f\uff08\u4f8b\u5982\uff0c\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u3001\u4f7f\u7528\u8005\u540d\u7a31\uff09\u3002<\/li>\n<li><strong>\u6aa2\u67e5\u7d04\u675f\uff1a<\/strong> \u4f7f\u7528\u6aa2\u67e5\u7d04\u675f\u4f86\u9a57\u8b49\u8cc7\u6599\u683c\u5f0f\u6216\u7bc4\u570d\uff08\u4f8b\u5982\uff0c<code>\u5e74\u9f61 &gt;= 0<\/code>).<\/li>\n<li><strong>\u975e\u7a7a\uff1a<\/strong>\u5c07\u5fc5\u8981\u6b04\u4f4d\u6a19\u8a18\u70ba<code>NOT NULL<\/code>\u4ee5\u78ba\u4fdd\u8cc7\u6599\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n<h2>\u7b2c\u4e94\u968e\u6bb5\uff1a\u53ef\u8996\u5316\u5be6\u9ad4\u95dc\u4fc2\u5716 \ud83c\udfa8<\/h2>\n<p>\u908f\u8f2f\u6a21\u578b\u5efa\u7acb\u5f8c\uff0c\u5fc5\u9808\u9032\u884c\u53ef\u8996\u5316\u3002\u96d6\u7136\u6709\u5c08\u9580\u7684\u8edf\u9ad4\u53ef\u7528\u65bc\u6b64\u76ee\u7684\uff0c\u4f46\u7e6a\u88fd\u5716\u8868\u7684\u539f\u5247\u59cb\u7d42\u4fdd\u6301\u4e00\u81f4\u3002<\/p>\n<h3>\u5716\u8868\u7e6a\u88fd\u6a19\u6e96<\/h3>\n<p>\u9078\u64c7\u4e00\u7a2e\u7b26\u865f\u6a19\u6e96\uff0c\u4ee5\u78ba\u4fdd\u4e0d\u540c\u5229\u76ca\u76f8\u95dc\u8005\u90fd\u80fd\u8f15\u9b06\u95b1\u8b80\u5716\u8868\u3002<\/p>\n<ul>\n<li><strong>\u70cf\u9d09\u8db3\u7b26\u865f\uff1a<\/strong>\u5de5\u696d\u4e2d\u5ee3\u6cdb\u4f7f\u7528\u3002\u4f7f\u7528\u7279\u5b9a\u7b26\u865f\u4f86\u8868\u793a\u57fa\u6578\uff08\u4f8b\u5982\uff0c\u55ae\u7dda\u4ee3\u8868\u300c\u4e00\u300d\uff0c\u70cf\u9d09\u8db3\u4ee3\u8868\u300c\u591a\u300d\uff09\u3002<\/li>\n<li><strong>UML \u985e\u5716\uff1a<\/strong>\u4f7f\u7528\u65b9\u6846\u548c\u7bad\u982d\uff0c\u901a\u5e38\u53d7\u5230\u719f\u6089\u7269\u4ef6\u5c0e\u5411\u8a2d\u8a08\u7684\u8edf\u9ad4\u958b\u767c\u4eba\u54e1\u9752\u775e\u3002<\/li>\n<li><strong>\u9673\u6c0f\u7b26\u865f\uff1a<\/strong>\u4f7f\u7528\u83f1\u5f62\u8868\u793a\u95dc\u4fc2\uff0c\u5728\u5b78\u8853\u74b0\u5883\u4e2d\u5e38\u898b\uff0c\u4f46\u5728\u73fe\u4ee3\u4f01\u696d\u5de5\u5177\u4e2d\u8f03\u5c11\u898b\u3002<\/li>\n<\/ul>\n<h3>\u4f48\u5c40\u6700\u4f73\u5be6\u52d9<\/h3>\n<ul>\n<li><strong>\u5206\u7d44\uff1a<\/strong>\u5c07\u76f8\u95dc\u7684\u8868\u683c\u805a\u96c6\u5728\u4e00\u8d77\uff08\u4f8b\u5982\uff0c\u5c07\u6240\u6709\u8a02\u55ae\u8868\u683c\u653e\u5728\u540c\u4e00\u5340\u57df\uff09\uff0c\u4ee5\u986f\u793a\u908f\u8f2f\u9818\u57df\u3002<\/li>\n<li><strong>\u6d41\u52d5\u65b9\u5411\uff1a<\/strong>\u5b89\u6392\u5716\u8868\u4f7f\u5176\u908f\u8f2f\u4e0a\u5f9e\u5de6\u5230\u53f3\u6216\u5f9e\u4e0a\u5230\u4e0b\u6d41\u52d5\u3002<\/li>\n<li><strong>\u53ef\u8b80\u6027\uff1a<\/strong>\u78ba\u4fdd\u8868\u683c\u540d\u7a31\u6e05\u6670\u53ef\u898b\uff0c\u4e26\u76e1\u91cf\u6e1b\u5c11\u7dda\u689d\u4ea4\u53c9\u3002<\/li>\n<\/ul>\n<h2>\u7b2c\u516d\u968e\u6bb5\uff1a\u6587\u4ef6\u7de8\u5beb\u8207\u7dad\u8b77 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