{"id":1596,"date":"2026-03-27T07:34:32","date_gmt":"2026-03-27T07:34:32","guid":{"rendered":"https:\/\/www.go-diagram.com\/cn\/common-erd-design-mistakes-and-how-to-avoid-them\/"},"modified":"2026-03-27T07:34:32","modified_gmt":"2026-03-27T07:34:32","slug":"common-erd-design-mistakes-and-how-to-avoid-them","status":"publish","type":"post","link":"https:\/\/www.go-diagram.com\/cn\/common-erd-design-mistakes-and-how-to-avoid-them\/","title":{"rendered":"\u5e38\u89c1\u7684ERD\u8bbe\u8ba1\u9519\u8bef\u53ca\u5982\u4f55\u907f\u514d"},"content":{"rendered":"<p>\u5b9e\u4f53\u5173\u7cfb\u56fe\uff08ERD\uff09\u662f\u4efb\u4f55\u5f3a\u5927\u6570\u636e\u5e93\u7cfb\u7edf\u7684\u57fa\u7840\u84dd\u56fe\u3002\u5b83\u4ee5\u53ef\u89c6\u5316\u65b9\u5f0f\u5c55\u793a\u6570\u636e\u7ed3\u6784\u3001\u5b9e\u4f53\u4e4b\u95f4\u7684\u5173\u7cfb\u4ee5\u53ca\u63a7\u5236\u4ea4\u4e92\u7684\u7ea6\u675f\u6761\u4ef6\u3002\u6b63\u786e\u6267\u884c\u65f6\uff0cERD\u80fd\u591f\u786e\u4fdd\u6570\u636e\u5b8c\u6574\u6027\u3001\u67e5\u8be2\u6027\u80fd\u548c\u53ef\u6269\u5c55\u6027\u3002\u7136\u800c\uff0c\u5982\u679c\u5728\u6b64\u9636\u6bb5\u5b58\u5728\u8bbe\u8ba1\u7f3a\u9677\uff0c\u8fd9\u4e9b\u7f3a\u9677\u5c06\u8d2f\u7a7f\u6574\u4e2a\u5f00\u53d1\u751f\u547d\u5468\u671f\uff0c\u5e38\u5e38\u5bfc\u81f4\u4ee3\u4ef7\u9ad8\u6602\u7684\u91cd\u6784\u3001\u6027\u80fd\u74f6\u9888\u6216\u6570\u636e\u635f\u574f\u3002\u672c\u6307\u5357\u5206\u6790\u4e86\u6570\u636e\u5e93\u6a21\u5f0f\u8bbe\u8ba1\u4e2d\u7684\u5e38\u89c1\u9519\u8bef\uff0c\u5e76\u63d0\u4f9b\u4e86\u5207\u5b9e\u53ef\u884c\u7684\u7b56\u7565\uff0c\u4ee5\u4fdd\u6301\u9ad8\u6807\u51c6\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Line art infographic illustrating 6 common Entity Relationship Diagram design mistakes: ambiguous relationships, normalization balance issues, naming convention chaos, cardinality misinterpretation, data type inconsistencies, and key management errors\u2014each paired with actionable solutions and a pre-implementation checklist for robust database schema design\" decoding=\"async\" src=\"https:\/\/www.go-diagram.com\/wp-content\/uploads\/2026\/03\/erd-design-mistakes-infographic-line-art-16x9-1.jpg\"\/><\/figure>\n<\/div>\n<h2>1. \u5173\u7cfb\u5b9a\u4e49\u6a21\u7cca \ud83e\udd14<\/h2>\n<p>\u6700\u5e38\u89c1\u7684\u95ee\u9898\u4e4b\u4e00\u662f\u5b9e\u4f53\u4e4b\u95f4\u5173\u7cfb\u4e0d\u660e\u786e\u6216\u672a\u5b9a\u4e49\u3002\u5173\u7cfb\u5b9a\u4e49\u4e86\u67d0\u4e00\u8868\u4e2d\u7684\u6570\u636e\u5982\u4f55\u4e0e\u53e6\u4e00\u8868\u4e2d\u7684\u6570\u636e\u8fde\u63a5\u3002\u5982\u679c\u8fd9\u79cd\u8fde\u63a5\u6a21\u7cca\u4e0d\u6e05\uff0c\u6570\u636e\u5e93\u5f15\u64ce\u5c06\u65e0\u6cd5\u5f3a\u5236\u5b9e\u65bd\u5f15\u7528\u5b8c\u6574\u6027\uff0c\u5e94\u7528\u7a0b\u5e8f\u903b\u8f91\u4e5f\u4f1a\u53d8\u5f97\u8106\u5f31\u3002<\/p>\n<ul>\n<li><strong>\u7f3a\u5c11\u57fa\u6570\uff1a<\/strong>\u672a\u660e\u786e\u8bf4\u660e\u5173\u7cfb\u662f\u4e00\u5bf9\u4e00\u3001\u4e00\u5bf9\u591a\u8fd8\u662f\u591a\u5bf9\u591a\uff0c\u4f1a\u9020\u6210\u6b67\u4e49\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a\u5ba2\u6237\u662f\u5426\u53ef\u4ee5\u62e5\u6709\u591a\u4e2a\u8ba2\u5355\uff0c\u8fd8\u662f\u53ea\u80fd\u6709\u4e00\u4e2a\uff1f\u5982\u679c\u6ca1\u6709\u660e\u786e\u7684\u57fa\u6570\uff0c\u5f00\u53d1\u4eba\u5458\u4f1a\u505a\u51fa\u53ef\u80fd\u4e0e\u4e1a\u52a1\u89c4\u5219\u4e0d\u7b26\u7684\u5047\u8bbe\u3002<\/li>\n<li><strong>\u672a\u6807\u6ce8\u7684\u8fde\u7ebf\uff1a<\/strong>\u8fde\u63a5\u5b9e\u4f53\u7684ERD\u8fde\u7ebf\u5e94\u59cb\u7ec8\u6807\u6ce8\u5173\u7cfb\u7684\u6027\u8d28\u3002\u4e00\u6761\u6ca1\u6709\u4efb\u4f55\u6807\u6ce8\u7684\u8fde\u7ebf\u65e0\u6cd5\u63d0\u4f9b\u5173\u4e8e\u6570\u636e\u91cf\u6216\u5173\u7cfb\u65b9\u5411\u7684\u4efb\u4f55\u4e0a\u4e0b\u6587\u4fe1\u606f\u3002<\/li>\n<li><strong>\u9519\u8bef\u7684\u591a\u5bf9\u591a\u5904\u7406\uff1a<\/strong>\u4e00\u4e2a\u5e38\u89c1\u9519\u8bef\u662f\u76f4\u63a5\u5728\u4e24\u4e2a\u8868\u4e4b\u95f4\u8868\u793a\u591a\u5bf9\u591a\u5173\u7cfb\u3002\u5173\u7cfb\u578b\u6570\u636e\u5e93\u5728\u6ca1\u6709\u4e2d\u95f4\u8868\u7684\u60c5\u51b5\u4e0b\u4e0d\u539f\u751f\u652f\u6301\u8fd9\u79cd\u5173\u7cfb\u3002\u8fd9\u4f1a\u5bfc\u81f4\u6570\u636e\u7c92\u5ea6\u4e22\u5931\uff0c\u5e76\u96be\u4ee5\u8ffd\u8e2a\u4e2d\u95f4\u72b6\u6001\u3002<\/li>\n<\/ul>\n<h3>\u5173\u7cfb\u8bbe\u8ba1\u7684\u6700\u4f73\u5b9e\u8df5<\/h3>\n<p>\u4e3a\u6d88\u9664\u6b67\u4e49\uff0c\u786e\u4fdd\u6bcf\u6761\u8fde\u63a5\u7ebf\u90fd\u660e\u786e\u6807\u660e\u6700\u5c0f\u548c\u6700\u5927\u53c2\u4e0e\u5ea6\u3002\u5728\u591a\u5bf9\u591a\u573a\u666f\u4e2d\u4f7f\u7528\u8fde\u63a5\u8868\u3002\u8be5\u4e2d\u95f4\u8868\u4fdd\u5b58\u4e24\u4e2a\u7236\u5b9e\u4f53\u7684\u4e3b\u952e\uff0c\u4ece\u800c\u5f62\u6210\u4e24\u4e2a\u72ec\u7acb\u7684\u4e00\u5bf9\u591a\u5173\u7cfb\u3002\u8fd9\u79cd\u7ed3\u6784\u5141\u8bb8\u5728\u5173\u7cfb\u672c\u8eab\u4e0a\u6dfb\u52a0\u989d\u5916\u5c5e\u6027\uff0c\u5982\u65f6\u95f4\u6233\u6216\u72b6\u6001\u6807\u5fd7\u3002<\/p>\n<h2>2. \u89c4\u8303\u5316\u5e73\u8861\u95ee\u9898 \u2696\ufe0f<\/h2>\n<p>\u89c4\u8303\u5316\u662f\u901a\u8fc7\u7ec4\u7ec7\u6570\u636e\u6765\u51cf\u5c11\u5197\u4f59\u5e76\u63d0\u9ad8\u5b8c\u6574\u6027\u7684\u4e00\u79cd\u8fc7\u7a0b\u3002\u7136\u800c\uff0c\u5982\u679c\u4e0d\u8003\u8651\u5b9e\u9645\u8fd0\u884c\u73af\u5883\u800c\u673a\u68b0\u5730\u5e94\u7528\u89c4\u8303\u5316\u89c4\u5219\uff0c\u53ef\u80fd\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u76f8\u53cd\uff0c\u5b8c\u5168\u5ffd\u7565\u89c4\u8303\u5316\u5219\u4f1a\u4ea7\u751f\u5f02\u5e38\u3002<\/p>\n<ul>\n<li><strong>\u8fc7\u5ea6\u89c4\u8303\u5316\uff1a<\/strong>\u521b\u5efa\u8fc7\u591a\u7684\u8868\u4f1a\u8feb\u4f7f\u67e5\u8be2\u901a\u8fc7\u590d\u6742\u7684\u8fde\u63a5\u6765\u83b7\u53d6\u57fa\u672c\u6570\u636e\u3002\u5982\u679c\u4e00\u4e2a\u67e5\u8be2\u9700\u8981\u8fde\u63a5\u5341\u4e2a\u8868\u624d\u80fd\u83b7\u53d6\u4e00\u4e2a\u7528\u6237\u8d44\u6599\uff0c\u8bfb\u53d6\u6027\u80fd\u5c06\u663e\u8457\u4e0b\u964d\u3002\u8fd9\u79cd\u60c5\u51b5\u901a\u5e38\u53d1\u751f\u5728\u8bbe\u8ba1\u8005\u4e3a\u4e86\u6ee1\u8db3\u7b2c\u4e09\u8303\u5f0f\uff083NF\uff09\u800c\u5c06\u6bcf\u4e2a\u5c5e\u6027\u90fd\u5355\u72ec\u5f52\u5165\u4e00\u4e2a\u8868\uff0c\u5374\u672a\u8fdb\u884c\u5b9e\u9645\u9a8c\u8bc1\u65f6\u3002<\/li>\n<li><strong>\u89c4\u8303\u5316\u4e0d\u8db3\uff1a<\/strong>\u5b58\u50a8\u5197\u4f59\u6570\u636e\uff0c\u4f8b\u5982\u5728\u6bcf\u4e2a\u8ba2\u5355\u8868\u4e2d\u90fd\u4fdd\u5b58\u5ba2\u6237\u5730\u5740\uff0c\u4f1a\u5bfc\u81f4\u66f4\u65b0\u5f02\u5e38\u3002\u5982\u679c\u5ba2\u6237\u642c\u5bb6\uff0c\u5fc5\u987b\u66f4\u65b0\u4e0e\u8be5\u5ba2\u6237\u76f8\u5173\u7684\u6bcf\u4e00\u9879\u8bb0\u5f55\u3002\u82e5\u672a\u80fd\u5b8c\u6210\u66f4\u65b0\uff0c\u5c06\u5bfc\u81f4\u6570\u636e\u72b6\u6001\u4e0d\u4e00\u81f4\u3002<\/li>\n<li><strong>\u5ffd\u89c6\u8bfb\u53d6\u5bc6\u96c6\u578b\u5de5\u4f5c\u8d1f\u8f7d\u4e2d\u7684\u53cd\u89c4\u8303\u5316\uff1a<\/strong>\u5728\u8bfb\u53d6\u64cd\u4f5c\u8fdc\u591a\u4e8e\u5199\u5165\u64cd\u4f5c\u7684\u573a\u666f\u4e2d\uff0c\u53cd\u89c4\u8303\u5316\u53ef\u4ee5\u662f\u4e00\u79cd\u6709\u6548\u7684\u7b56\u7565\u3002\u7f13\u5b58\u91cd\u590d\u6570\u636e\u53ef\u4ee5\u51cf\u5c11\u8fde\u63a5\u5f00\u9500\uff0c\u524d\u63d0\u662f\u5fc5\u987b\u6709\u673a\u5236\u786e\u4fdd\u6570\u636e\u4fdd\u6301\u540c\u6b65\u3002<\/li>\n<\/ul>\n<h2>3. \u547d\u540d\u89c4\u8303\u6df7\u4e71 \ud83c\udff7\ufe0f<\/h2>\n<p>\u5b9e\u4f53\u3001\u5c5e\u6027\u548c\u5173\u7cfb\u547d\u540d\u7684\u4e00\u81f4\u6027\u5bf9\u4e8e\u53ef\u7ef4\u62a4\u6027\u81f3\u5173\u91cd\u8981\u3002\u5982\u679c\u4e00\u4e2a\u6a21\u5f0f\u4e2d\u67d0\u4e9b\u8868\u4f7f\u7528snake_case\uff0c\u800c\u5176\u4ed6\u8868\u4f7f\u7528CamelCase\uff0c\u4f1a\u4ee4\u5f00\u53d1\u4eba\u5458\u56f0\u60d1\uff0c\u5e76\u589e\u52a0\u5728\u7f16\u5199\u67e5\u8be2\u65f6\u51fa\u73b0\u8bed\u6cd5\u9519\u8bef\u7684\u53ef\u80fd\u6027\u3002<\/p>\n<ul>\n<li><strong>\u5927\u5c0f\u5199\u4f7f\u7528\u4e0d\u4e00\u81f4\uff1a<\/strong>\u6df7\u5408\u4f7f\u7528<code>user_id<\/code>\u548c<code>userId<\/code>\u5728\u540c\u4e00\u6a21\u5f0f\u4e2d\u6df7\u7528user_id\u548cuserId\uff0c\u4f1a\u4f7f\u7f16\u5199\u4f9d\u8d56\u7ea6\u5b9a\u7684\u81ea\u52a8\u5316\u811a\u672c\u6216ORM\uff08\u5bf9\u8c61\u5173\u7cfb\u6620\u5c04\u5668\uff09\u53d8\u5f97\u56f0\u96be\u3002<\/li>\n<li><strong>\u547d\u540d\u4e0d\u5177\u63cf\u8ff0\u6027\uff1a<\/strong>\u4f7f\u7528\u7c7b\u4f3c<code>tbl_1<\/code> \u6216 <code>field_a<\/code> \u9664\u4e86\u63d0\u4f9b\u96f6\u8bed\u4e49\u610f\u4e49\u5916\uff0c\u672a\u6765\u7ef4\u62a4\u8005\u5728\u6ca1\u6709\u5916\u90e8\u6587\u6863\u7684\u60c5\u51b5\u4e0b\u5c06\u96be\u4ee5\u7406\u89e3\u8be5\u8868\u7684\u76ee\u7684\u3002<\/li>\n<li><strong>\u4fdd\u7559\u5173\u952e\u5b57\uff1a<\/strong> \u547d\u540d\u4e00\u4e2a\u5217 <code>order<\/code> \u6216 <code>group<\/code> \u53ef\u80fd\u4e0e SQL \u8bed\u6cd5\u51b2\u7a81\u3002\u8fd9\u4e9b\u540d\u79f0\u5728\u67e5\u8be2\u4e2d\u9700\u8981\u7279\u6b8a\u8f6c\u4e49\uff0c\u4e14\u5728 SQL \u8bed\u6cd5\u66f4\u65b0\u65f6\u5bb9\u6613\u51fa\u9519\u3002<\/li>\n<\/ul>\n<h3>\u6807\u51c6\u5316\u547d\u540d<\/h3>\n<p>\u91c7\u7528\u4e25\u683c\u7684\u547d\u540d\u7b56\u7565\u3002\u8868\u540d\u5e94\u4e3a\u590d\u6570\u540d\u8bcd\uff08\u4f8b\u5982\uff0c<code>customers<\/code>\uff09\uff0c\u800c\u5217\u540d\u5e94\u4e3a\u63cf\u8ff0\u6570\u636e\u7684\u5355\u6570\u540d\u8bcd\uff08\u4f8b\u5982\uff0c<code>first_name<\/code>\uff09\u3002\u4e3b\u952e\u5e94\u9075\u5faa\u7c7b\u4f3c <code>_id<\/code> \u6216 <code>_pk<\/code> \u7684\u547d\u540d\u89c4\u8303\u3002\u5916\u952e\u5e94\u53cd\u6620\u6240\u5f15\u7528\u7684\u8868\u540d\uff0c\u4f8b\u5982 <code>customer_id<\/code>.<\/p>\n<h2>4. \u57fa\u6570\u8bef\u89e3 \ud83d\udcc9<\/h2>\n<p>\u57fa\u6570\u5b9a\u4e49\u4e86\u4e24\u4e2a\u8868\u4e2d\u8bb0\u5f55\u4e4b\u95f4\u7684\u6570\u503c\u5173\u7cfb\u3002\u8bef\u89e3\u8fd9\u4e00\u57fa\u672c\u6982\u5ff5\u4f1a\u5bfc\u81f4\u6570\u636e\u5b8c\u6574\u6027\u8fdd\u89c4\u4ee5\u53ca\u5e94\u7528\u7a0b\u5e8f\u67e5\u8be2\u4e2d\u7684\u903b\u8f91\u9519\u8bef\u3002<\/p>\n<ul>\n<li><strong>\u6df7\u6dc6 1:1 \u4e0e 1:N\uff1a<\/strong> \u5f53\u4e1a\u52a1\u903b\u8f91\u652f\u6301\u591a\u6761\u8bb0\u5f55\u65f6\uff0c\u4ecd\u8bbe\u8ba1\u4e3a\u4e00\u5bf9\u4e00\u5173\u7cfb\u4f1a\u4eba\u4e3a\u8bbe\u7f6e\u9650\u5236\u3002\u4f8b\u5982\uff0c\u9650\u5236\u7528\u6237\u53ea\u80fd\u4e0a\u4f20\u4e00\u5f20\u5934\u50cf\uff0c\u800c\u5b9e\u9645\u4e0a\u4ed6\u4eec\u5e94\u8be5\u80fd\u591f\u4e0a\u4f20\u4e00\u4e2a\u76f8\u518c\u3002<\/li>\n<li><strong>\u5ffd\u7565\u53ef\u9009\u6027\uff1a<\/strong> \u5224\u65ad\u5173\u7cfb\u662f\u5f3a\u5236\u7684\u8fd8\u662f\u53ef\u9009\u7684\u81f3\u5173\u91cd\u8981\u3002\u5982\u679c\u4e00\u4e2a\u8868\u8981\u6c42\u5916\u952e\uff0c\u5219\u5173\u7cfb\u4e3a\u5f3a\u5236\u7684\uff1b\u5982\u679c\u5916\u952e\u5217\u5141\u8bb8\u4e3a\u7a7a\u503c\uff0c\u5219\u5173\u7cfb\u4e3a\u53ef\u9009\u7684\u3002\u672a\u80fd\u8bb0\u5f55\u8fd9\u4e00\u70b9\u4f1a\u5bfc\u81f4\u9519\u8bef\uff0c\u5373\u5e94\u7528\u7a0b\u5e8f\u5c1d\u8bd5\u63d2\u5165\u6ca1\u6709\u6709\u6548\u5f15\u7528\u7684\u8bb0\u5f55\u3002<\/li>\n<li><strong>\u65b9\u5411\u6df7\u6dc6\uff1a<\/strong> \u5173\u7cfb\u5177\u6709\u65b9\u5411\u6027\u3002\u4e00\u4e2a <code>\u7528\u6237<\/code> \u6709\u591a\u4e2a <code>\u5e16\u5b50<\/code>\uff0c\u4f46\u4e00\u4e2a <code>\u5e16\u5b50<\/code> \u5c5e\u4e8e\u4e00\u4e2a <code>\u7528\u6237<\/code>\u3002\u5728\u6a21\u5f0f\u4e2d\u53cd\u8f6c\u8fd9\u4e00\u65b9\u5411\u4f1a\u7834\u574f\u7ea7\u8054\u5220\u9664\u6216\u66f4\u65b0\u7684\u903b\u8f91\u3002<\/li>\n<\/ul>\n<h2>5. \u6570\u636e\u7c7b\u578b\u4e0d\u4e00\u81f4 \ud83d\udcca<\/h2>\n<p>\u4e3a\u5217\u9009\u62e9\u9519\u8bef\u7684\u6570\u636e\u7c7b\u578b\u4f1a\u5f71\u54cd\u5b58\u50a8\u6548\u7387\u3001\u67e5\u8be2\u901f\u5ea6\u548c\u6570\u636e\u51c6\u786e\u6027\u3002\u8fd9\u4e00\u70b9\u5728\u521d\u59cb\u8bbe\u8ba1\u9636\u6bb5\u5e38\u5e38\u88ab\u5ffd\u89c6\u3002<\/p>\n<ul>\n<li><strong>\u4f7f\u7528 VARCHAR \u5b58\u50a8\u56fa\u5b9a\u6570\u636e\uff1a<\/strong> \u5c06\u56fd\u5bb6\u4ee3\u7801\u6216\u72b6\u6001\u6807\u5fd7\u5b58\u50a8\u5728 <code>VARCHAR<\/code> \u5b57\u6bb5\u4f1a\u6d6a\u8d39\u5b58\u50a8\u7a7a\u95f4\u5e76\u51cf\u6162\u6bd4\u8f83\u901f\u5ea6\u3002\u5bf9\u4e8e\u56fa\u5b9a\u503c\u96c6\u5408\uff0c\u4f7f\u7528\u6574\u6570\u6216\u7279\u5b9a\u7684\u679a\u4e3e\u7c7b\u578b\u66f4\u4e3a\u9ad8\u6548\u3002<\/li>\n<li><strong>\u6574\u6570\u6ea2\u51fa\u98ce\u9669\uff1a<\/strong> \u4f7f\u7528\u6807\u51c6 <code>INT<\/code> \u6765\u5904\u7406\u53ef\u80fd\u8d85\u8fc720\u4ebf\u7684\u8d22\u52a1\u4ea4\u6613\u6216\u7528\u6237ID\uff0c\u53ef\u80fd\u5bfc\u81f4\u65e0\u58f0\u5931\u8d25\u3002\u4f7f\u7528 <code>BIGINT<\/code> \u6216 <code>DECIMAL<\/code> \u7528\u4e8e\u8d27\u5e01\u503c\u53ef\u4ee5\u9632\u6b62\u4e0e\u6d6e\u70b9\u7c7b\u578b\u76f8\u5173\u7684\u820d\u5165\u9519\u8bef\u3002<\/li>\n<li><strong>\u65f6\u95f4\u6233\u7cbe\u5ea6\uff1a<\/strong> \u4f7f\u7528 <code>DATETIME<\/code> \u5728\u672a\u8003\u8651\u65f6\u533a\u5b58\u50a8\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528 DATETIME\uff0c\u53ef\u80fd\u5bfc\u81f4\u5e94\u7528\u7a0b\u5e8f\u4e3a\u4e0d\u540c\u5730\u533a\u7528\u6237\u63d0\u4f9b\u670d\u52a1\u65f6\u51fa\u73b0\u9519\u8bef\u3002\u5c06\u65f6\u95f4\u6233\u4ee5 UTC \u683c\u5f0f\u5b58\u50a8\uff0c\u5e76\u5728\u5e94\u7528\u5c42\u8fdb\u884c\u8f6c\u6362\u662f\u4e00\u79cd\u66f4\u5b89\u5168\u7684\u6a21\u5f0f\u3002<\/li>\n<\/ul>\n<h2>6. \u952e\u7ba1\u7406\u9519\u8bef \ud83d\udd11<\/h2>\n<p>\u4e3b\u952e\u548c\u5916\u952e\u662f\u5173\u7cfb\u5b8c\u6574\u6027\u7684\u91cd\u8981\u57fa\u7840\u3002\u5b9a\u4e49\u8fd9\u4e9b\u952e\u65f6\u7684\u9519\u8bef\u4f1a\u7834\u574f\u6574\u4e2a\u6570\u636e\u5e93\u7ed3\u6784\u3002<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u590d\u5408\u952e\u4ee5\u7b80\u5316\u8bbe\u8ba1\uff1a<\/strong> \u867d\u7136\u590d\u5408\u952e\u662f\u6709\u6548\u7684\uff0c\u4f46\u5c06\u5176\u7528\u4f5c\u4e3b\u952e\u4f1a\u4f7f\u5916\u952e\u5173\u7cfb\u53d8\u5f97\u590d\u6742\u4e14\u66f4\u96be\u7d22\u5f15\u3002\u4f7f\u7528\u4ee3\u7406\u952e\uff08\u5982 UUID \u6216\u81ea\u589e\u6574\u6570\uff09\u901a\u5e38\u80fd\u7b80\u5316\u5e94\u7528\u903b\u8f91\u3002<\/li>\n<li><strong>\u7f3a\u5c11\u5916\u952e\u7ea6\u675f\uff1a<\/strong>\u5728\u5b50\u8868\u4e2d\u5b9a\u4e49\u5217\u4f46\u4e0d\u6dfb\u52a0\u7269\u7406\u7ea6\u675f\uff0c\u4f1a\u5bfc\u81f4\u5b64\u7acb\u8bb0\u5f55\u7684\u5b58\u5728\u3002\u8fd9\u7834\u574f\u4e86\u5f15\u7528\u5b8c\u6574\u6027\uff0c\u4f7f\u6570\u636e\u6e05\u7406\u53d8\u5f97\u56f0\u96be\u3002<\/li>\n<li><strong>\u7ea7\u8054\u5220\u9664\u98ce\u9669\uff1a<\/strong>\u5728\u4e0d\u4e86\u89e3\u4e1a\u52a1\u5f71\u54cd\u7684\u60c5\u51b5\u4e0b\u914d\u7f6e\u7ea7\u8054\u5220\u9664\uff0c\u53ef\u80fd\u5bfc\u81f4\u610f\u5916\u7684\u6570\u636e\u4e22\u5931\u3002\u5220\u9664\u7236\u8bb0\u5f55\u5e76\u4e0d\u603b\u662f\u5e94\u8be5\u5220\u9664\u6240\u6709\u76f8\u5173\u5b50\u8bb0\u5f55\uff0c\u7279\u522b\u662f\u5f53\u8fd9\u4e9b\u8bb0\u5f55\u5c5e\u4e8e\u5386\u53f2\u5ba1\u8ba1\u8ffd\u8e2a\u65f6\u3002<\/li>\n<\/ul>\n<h2>\u5e38\u89c1\u9519\u8bef\u4e0e\u89e3\u51b3\u65b9\u6848\u5bf9\u6bd4<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u9519\u8bef<\/th>\n<th>\u540e\u679c<\/th>\n<th>\u7ea0\u6b63\u63aa\u65bd<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u591a\u5bf9\u591a\u76f4\u63a5\u8fde\u63a5<\/td>\n<td>\u65e0\u6cd5\u5b58\u50a8\u5173\u7cfb\u5c5e\u6027<\/td>\n<td>\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u4e24\u4e2a\u5916\u952e\u7684\u8fde\u63a5\u8868<\/td>\n<\/tr>\n<tr>\n<td>\u5197\u4f59\u6570\u636e\u5b58\u50a8<\/td>\n<td>\u66f4\u65b0\u5f02\u5e38\u548c\u4e0d\u4e00\u81f4<\/td>\n<td>\u89c4\u8303\u5316\u5230\u7b2c\u4e09\u8303\u5f0f\u5e76\u4f7f\u7528\u5916\u952e<\/td>\n<\/tr>\n<tr>\n<td>\u975e\u63cf\u8ff0\u6027\u5217\u540d<\/td>\n<td>\u7ef4\u62a4\u6210\u672c\u9ad8\u4e14\u5bb9\u6613\u6df7\u6dc6<\/td>\n<td>\u5b9e\u65bd\u4e25\u683c\u7684\u547d\u540d\u89c4\u8303<\/td>\n<\/tr>\n<tr>\n<td>\u5916\u952e\u4e0a\u7f3a\u5c11\u7d22\u5f15<\/td>\n<td>\u8fde\u63a5\u6027\u80fd\u7f13\u6162<\/td>\n<td>\u5728\u6240\u6709\u5916\u952e\u5217\u4e0a\u6dfb\u52a0\u7d22\u5f15<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u7c7b\u578b\u4e0d\u6b63\u786e<\/td>\n<td>\u5b58\u50a8\u81a8\u80c0\u6216\u8ba1\u7b97\u9519\u8bef<\/td>\n<td>\u6839\u636e\u6570\u636e\u7279\u5f81\u5339\u914d\u7c7b\u578b\uff08\u4f8b\u5982\uff0cINT \u4e0e VARCHAR\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>7. \u5b9e\u65bd\u524d\u5ba1\u67e5\u6e05\u5355 \u2705<\/h2>\n<p>\u5728\u90e8\u7f72\u6a21\u5f0f\u4e4b\u524d\uff0c\u8fdb\u884c\u4e25\u683c\u7684\u5ba1\u67e5\u4ee5\u53d1\u73b0\u8bbe\u8ba1\u7f3a\u9677\u3002\u672c\u6e05\u5355\u6db5\u76d6\u4e86\u4e0a\u8ff0\u8bc6\u522b\u51fa\u7684\u5173\u952e\u9886\u57df\u3002<\/p>\n<ul>\n<li><strong>\u9a8c\u8bc1\u5b9e\u4f53\u540d\u79f0\uff1a<\/strong>\u6240\u6709\u8868\u7684\u547d\u540d\u662f\u5426\u4e00\u81f4\uff1f\u5b83\u4eec\u662f\u5426\u4ee3\u8868\u4e86\u4e0d\u540c\u7684\u6982\u5ff5\uff1f<\/li>\n<li><strong>\u68c0\u67e5\u57fa\u6570\uff1a<\/strong>\u6240\u6709\u5173\u7cfb\u662f\u5426\u51c6\u786e\u53cd\u6620\u4e86\u4e1a\u52a1\u89c4\u5219\uff1f\u6700\u5c0f\u548c\u6700\u5927\u53c2\u4e0e\u5ea6\u662f\u5426\u660e\u786e\uff1f<\/li>\n<li><strong>\u9a8c\u8bc1\u952e\uff1a<\/strong>\u6bcf\u4e00\u884c\u662f\u5426\u6709\u552f\u4e00\u7684\u6807\u8bc6\u7b26\uff1f\u6240\u6709\u5173\u7cfb\u662f\u5426\u90fd\u5b58\u5728\u5916\u952e\uff1f<\/li>\n<li><strong>\u5ba1\u67e5\u6570\u636e\u7c7b\u578b\uff1a<\/strong>\u5217\u7c7b\u578b\u662f\u5426\u652f\u6301\u6570\u636e\u7684\u9884\u671f\u8303\u56f4\u548c\u7cbe\u5ea6\uff1f<\/li>\n<li><strong>\u8bc4\u4f30\u89c4\u8303\u5316\u7a0b\u5ea6\uff1a<\/strong>\u8be5\u6a21\u5f0f\u5728\u5197\u4f59\u4e0e\u8fde\u63a5\u590d\u6742\u6027\u4e4b\u95f4\u662f\u5426\u4fdd\u6301\u5e73\u8861\uff1f\u662f\u5426\u6ee1\u8db3\u5e94\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\uff1f<\/li>\n<li><strong>\u5b89\u5168\u68c0\u67e5\uff1a<\/strong>\u654f\u611f\u5217\u662f\u5426\u5df2\u6b63\u786e\u6807\u8bb0\uff1f\u662f\u5426\u6709\u6570\u636e\u9759\u6001\u52a0\u5bc6\u7684\u8ba1\u5212\uff1f<\/li>\n<li><strong>\u53ef\u6269\u5c55\u6027\uff1a<\/strong>\u8be5\u6a21\u5f0f\u80fd\u5426\u5e94\u5bf9\u6570\u636e\u91cf\u7684\u9884\u671f\u589e\u957f\uff1f\u662f\u5426\u8003\u8651\u4e86\u5927\u8868\u7684\u5206\u533a\u7b56\u7565\uff1f<\/li>\n<\/ul>\n<h2>8. \u6587\u6863\u4e0e\u6f14\u8fdb \ud83d\udcdd<\/h2>\n<p>ERD \u4e0d\u662f\u4e00\u4e2a\u9759\u6001\u6587\u6863\u3002\u4e1a\u52a1\u9700\u6c42\u4f1a\u53d8\u5316\uff0c\u6a21\u5f0f\u5fc5\u987b\u968f\u4e4b\u6f14\u8fdb\u3002\u5728\u7ef4\u62a4\u56fe\u8868\u7684\u540c\u65f6\u4fdd\u6301\u6587\u6863\uff0c\u53ef\u4ee5\u786e\u4fdd\u8bbe\u8ba1\u610f\u56fe\u968f\u65f6\u95f4\u5f97\u4ee5\u4fdd\u7559\u3002<\/p>\n<ul>\n<li><strong>\u7248\u672c\u63a7\u5236\uff1a<\/strong>\u5c06 ERD \u6587\u4ef6\u4e0e\u5e94\u7528\u7a0b\u5e8f\u4ee3\u7801\u4e00\u8d77\u5b58\u50a8\u5728\u7248\u672c\u63a7\u5236\u7cfb\u7edf\u4e2d\u3002\u8fd9\u6837\u53ef\u4ee5\u8ffd\u8e2a\u53d8\u66f4\uff0c\u5e76\u5728\u8bbe\u8ba1\u51b3\u7b56\u51fa\u73b0\u95ee\u9898\u65f6\u56de\u6eda\u3002<\/li>\n<li><strong>\u53d8\u66f4\u65e5\u5fd7\uff1a<\/strong>\u8bb0\u5f55\u53d8\u66f4\u7684\u539f\u56e0\u3002\u7406\u89e3\u6a21\u5f0f\u4fee\u6539\u80cc\u540e\u7684\u903b\u8f91\uff0c\u6709\u52a9\u4e8e\u672a\u6765\u7684\u5f00\u53d1\u4eba\u5458\u907f\u514d\u91cd\u8e48\u8986\u8f99\u3002<\/li>\n<li><strong>\u89c6\u89c9\u6e05\u6670\u5ea6\uff1a<\/strong>\u786e\u4fdd\u968f\u7740\u56fe\u8868\u89c4\u6a21\u6269\u5927\uff0c\u5176\u53ef\u8bfb\u6027\u4f9d\u7136\u4fdd\u6301\u3002\u5c06\u76f8\u5173\u8868\u5206\u7ec4\uff0c\u5e76\u4f7f\u7528\u4e00\u81f4\u7684\u7ebf\u578b\u6765\u8868\u793a\u5173\u7cfb\u7c7b\u578b\u3002<\/li>\n<\/ul>\n<h2>9. \u8bbe\u8ba1\u9009\u62e9\u7684\u6027\u80fd\u5f71\u54cd \u26a1<\/h2>\n<p>\u4f60\u7684 ERD \u7ed3\u6784\u76f4\u63a5\u5f71\u54cd\u6570\u636e\u5e93\u5f15\u64ce\u8bfb\u53d6\u548c\u5199\u5165\u6570\u636e\u7684\u65b9\u5f0f\u3002\u7cdf\u7cd5\u7684\u8bbe\u8ba1\u9009\u62e9\u4f1a\u4ea7\u751f\u9690\u85cf\u7684\u6027\u80fd\u5f00\u9500\uff0c\u53ea\u6709\u5728\u8d1f\u8f7d\u4e0b\u624d\u4f1a\u663e\u73b0\u3002<\/p>\n<ul>\n<li><strong>\u8fde\u63a5\u590d\u6742\u6027\uff1a<\/strong>\u9ad8\u5ea6\u89c4\u8303\u5316\u7684\u6a21\u5f0f\u9700\u8981\u591a\u6b21\u8fde\u63a5\u3002\u5982\u679c\u8fd9\u4e9b\u8fde\u63a5\u672a\u901a\u8fc7\u9002\u5f53\u7684\u7d22\u5f15\u8fdb\u884c\u4f18\u5316\uff0c\u67e5\u8be2\u6267\u884c\u65f6\u95f4\u5c06\u968f\u7740\u6570\u636e\u589e\u957f\u5448\u7ebf\u6027\u589e\u52a0\u3002<\/li>\n<li><strong>\u5199\u5165\u541e\u5410\u91cf\uff1a<\/strong>\u9ad8\u89c4\u8303\u5316\u4f1a\u51cf\u6162\u5199\u5165\u64cd\u4f5c\uff0c\u56e0\u4e3a\u4e3a\u4e86\u4fdd\u6301\u4e00\u81f4\u6027\uff0c\u5fc5\u987b\u540c\u65f6\u66f4\u65b0\u591a\u4e2a\u8868\u3002\u5728\u9ad8\u5199\u5165\u73af\u5883\u4e2d\uff0c\u5e94\u8003\u8651\u91c7\u7528\u6df7\u5408\u65b9\u6cd5\u3002<\/li>\n<li><strong>\u7d22\u5f15\u7b56\u7565\uff1a<\/strong>ERD 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