{"id":1599,"date":"2026-03-27T07:35:10","date_gmt":"2026-03-27T07:35:10","guid":{"rendered":"https:\/\/www.go-diagram.com\/tw\/common-erd-design-mistakes-and-how-to-avoid-them\/"},"modified":"2026-03-27T07:35:10","modified_gmt":"2026-03-27T07:35:10","slug":"common-erd-design-mistakes-and-how-to-avoid-them","status":"publish","type":"post","link":"https:\/\/www.go-diagram.com\/tw\/common-erd-design-mistakes-and-how-to-avoid-them\/","title":{"rendered":"\u5e38\u898b\u7684ERD\u8a2d\u8a08\u932f\u8aa4\u53ca\u5176\u907f\u514d\u65b9\u6cd5"},"content":{"rendered":"<p>\u5be6\u9ad4\u95dc\u4fc2\u5716\uff08ERD\uff09\u662f\u4efb\u4f55\u7a69\u5065\u8cc7\u6599\u5eab\u7cfb\u7d71\u7684\u57fa\u790e\u85cd\u5716\u3002\u5b83\u4ee5\u8996\u89ba\u65b9\u5f0f\u5448\u73fe\u8cc7\u6599\u7d50\u69cb\u3001\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u4fc2\uff0c\u4ee5\u53ca\u898f\u7bc4\u4e92\u52d5\u7684\u7d04\u675f\u689d\u4ef6\u3002\u82e5\u6b63\u78ba\u57f7\u884c\uff0cERD \u53ef\u78ba\u4fdd\u8cc7\u6599\u5b8c\u6574\u6027\u3001\u67e5\u8a62\u6548\u80fd\u8207\u53ef\u64f4\u5c55\u6027\u3002\u7136\u800c\uff0c\u82e5\u5728\u6b64\u968e\u6bb5\u5b58\u5728\u8a2d\u8a08\u7f3a\u9677\uff0c\u9019\u4e9b\u554f\u984c\u5c07\u6703\u50b3\u64ad\u81f3\u6574\u500b\u958b\u767c\u9031\u671f\uff0c\u5e38\u5c0e\u81f4\u9ad8\u6602\u7684\u91cd\u69cb\u6210\u672c\u3001\u6548\u80fd\u74f6\u9838\u6216\u8cc7\u6599\u640d\u6bc0\u3002\u672c\u6307\u5357\u63a2\u8a0e\u8cc7\u6599\u5eab\u7d50\u69cb\u8a2d\u8a08\u4e2d\u7684\u5e38\u898b\u932f\u8aa4\uff0c\u4e26\u63d0\u4f9b\u5177\u9ad4\u53ef\u884c\u7684\u7b56\u7565\uff0c\u4ee5\u7dad\u6301\u9ad8\u6a19\u6e96\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. \u95dc\u4fc2\u5b9a\u7fa9\u6a21\u7cca \ud83e\udd14<\/h2>\n<p>\u6700\u5e38\u898b\u7684\u554f\u984c\u4e4b\u4e00\u662f\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u4fc2\u4e0d\u6e05\u6670\u6216\u672a\u660e\u78ba\u5b9a\u7fa9\u3002\u95dc\u4fc2\u5b9a\u7fa9\u4e86\u8cc7\u6599\u8868\u4e2d\u8cc7\u6599\u8207\u53e6\u4e00\u8cc7\u6599\u8868\u4e2d\u8cc7\u6599\u7684\u9023\u7d50\u65b9\u5f0f\u3002\u82e5\u6b64\u9023\u7d50\u6a21\u7cca\u4e0d\u6e05\uff0c\u8cc7\u6599\u5eab\u5f15\u64ce\u5c07\u7121\u6cd5\u5f37\u5236\u57f7\u884c\u53c3\u8003\u5b8c\u6574\u6027\uff0c\u61c9\u7528\u7a0b\u5f0f\u908f\u8f2f\u4e5f\u6703\u8b8a\u5f97\u8106\u5f31\u3002<\/p>\n<ul>\n<li><strong>\u907a\u6f0f\u57fa\u6578\uff1a<\/strong>\u672a\u660e\u78ba\u6307\u5b9a\u95dc\u4fc2\u662f\u4e00\u5c0d\u4e00\u3001\u4e00\u5c0d\u591a\uff0c\u9084\u662f\u591a\u5c0d\u591a\uff0c\u6703\u9020\u6210\u6a21\u7cca\u6027\u3002\u4f8b\u5982\uff0c\u55ae\u4e00\u5ba2\u6236\u662f\u5426\u53ef\u64c1\u6709\u6578\u7b46\u8a02\u55ae\uff0c\u9084\u662f\u50c5\u9650\u4e00\u7b46\uff1f\u82e5\u7f3a\u4e4f\u660e\u78ba\u7684\u57fa\u6578\u5b9a\u7fa9\uff0c\u958b\u767c\u4eba\u54e1\u5c07\u505a\u51fa\u53ef\u80fd\u8207\u696d\u52d9\u898f\u5247\u4e0d\u7b26\u7684\u5047\u8a2d\u3002<\/li>\n<li><strong>\u672a\u6a19\u793a\u7684\u7dda\u689d\uff1a<\/strong>\u9023\u63a5\u5be6\u9ad4\u7684ERD\u7dda\u689d\u61c9\u59cb\u7d42\u6a19\u793a\u95dc\u4fc2\u7684\u6027\u8cea\u3002\u50c5\u50c5\u4e00\u689d\u7a7a\u767d\u7dda\u689d\u7121\u6cd5\u63d0\u4f9b\u6709\u95dc\u8cc7\u6599\u91cf\u6216\u95dc\u4fc2\u65b9\u5411\u7684\u4efb\u4f55\u4e0a\u4e0b\u6587\u8cc7\u8a0a\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\u591a\u5c0d\u591a\u95dc\u4fc2\uff1a<\/strong>\u5e38\u898b\u932f\u8aa4\u662f\u76f4\u63a5\u5728\u5169\u500b\u8cc7\u6599\u8868\u4e4b\u9593\u8868\u793a\u591a\u5c0d\u591a\u95dc\u4fc2\u3002\u95dc\u4fc2\u578b\u8cc7\u6599\u5eab\u5728\u6c92\u6709\u4e2d\u4ecb\u8cc7\u6599\u8868\u7684\u60c5\u6cc1\u4e0b\uff0c\u7121\u6cd5\u539f\u751f\u652f\u63f4\u6b64\u985e\u95dc\u4fc2\u3002\u9019\u5c07\u5c0e\u81f4\u8cc7\u6599\u7d30\u7c92\u5ea6\u7684\u55aa\u5931\uff0c\u4e26\u96e3\u4ee5\u8ffd\u8e64\u4e2d\u9593\u72c0\u614b\u3002<\/li>\n<\/ul>\n<h3>\u95dc\u4fc2\u8a2d\u8a08\u7684\u6700\u4f73\u5be6\u52d9<\/h3>\n<p>\u70ba\u89e3\u6c7a\u6a21\u7cca\u6027\uff0c\u8acb\u78ba\u4fdd\u6bcf\u689d\u9023\u63a5\u7dda\u90fd\u660e\u78ba\u6a19\u793a\u6700\u5c0f\u8207\u6700\u5927\u53c3\u8207\u5ea6\u3002\u5728\u591a\u5c0d\u591a\u60c5\u5883\u4e2d\u4f7f\u7528\u95dc\u806f\u8868\u3002\u6b64\u4e2d\u4ecb\u8868\u5132\u5b58\u5169\u500b\u7236\u5be6\u9ad4\u7684\u4e3b\u9375\uff0c\u5f9e\u800c\u5efa\u7acb\u5169\u500b\u660e\u78ba\u7684\u4e00\u5c0d\u591a\u95dc\u4fc2\u3002\u6b64\u7d50\u69cb\u5141\u8a31\u5728\u95dc\u4fc2\u672c\u8eab\u4e0a\u65b0\u589e\u5c6c\u6027\uff0c\u4f8b\u5982\u6642\u9593\u6233\u8a18\u6216\u72c0\u614b\u65d7\u6a19\u3002<\/p>\n<h2>2. \u6b63\u898f\u5316\u5e73\u8861\u554f\u984c \u2696\ufe0f<\/h2>\n<p>\u6b63\u898f\u5316\u662f\u900f\u904e\u7d44\u7e54\u8cc7\u6599\u4f86\u6e1b\u5c11\u5197\u9918\u4e26\u63d0\u5347\u5b8c\u6574\u6027\u7684\u4e00\u7a2e\u904e\u7a0b\u3002\u7136\u800c\uff0c\u82e5\u5728\u672a\u8003\u616e\u5be6\u969b\u904b\u4f5c\u74b0\u5883\u7684\u60c5\u6cc1\u4e0b\uff0c\u50f5\u5316\u5730\u5957\u7528\u6b63\u898f\u5316\u898f\u5247\uff0c\u5c07\u5c0e\u81f4\u6548\u80fd\u4e0b\u964d\u3002\u53cd\u4e4b\uff0c\u5b8c\u5168\u5ffd\u7565\u6b63\u898f\u5316\u5247\u6703\u7522\u751f\u7570\u5e38\u3002<\/p>\n<ul>\n<li><strong>\u904e\u5ea6\u6b63\u898f\u5316\uff1a<\/strong>\u5efa\u7acb\u904e\u591a\u8cc7\u6599\u8868\u6703\u8feb\u4f7f\u8907\u96dc\u7684\u9023\u63a5\u64cd\u4f5c\u4f86\u53d6\u5f97\u57fa\u672c\u8cc7\u8a0a\u3002\u82e5\u67e5\u8a62\u9700\u9023\u63a5\u5341\u500b\u8cc7\u6599\u8868\u624d\u80fd\u53d6\u5f97\u55ae\u4e00\u4f7f\u7528\u8005\u7684\u500b\u4eba\u8cc7\u6599\uff0c\u8b80\u53d6\u6548\u80fd\u5c07\u56b4\u91cd\u53d7\u640d\u3002\u9019\u901a\u5e38\u767c\u751f\u5728\u8a2d\u8a08\u5e2b\u70ba\u4e86\u7b26\u5408\u7b2c\u4e09\u6b63\u898f\u5316\u5f62\u5f0f\uff083NF\uff09\u800c\u5c07\u6bcf\u500b\u5c6c\u6027\u90fd\u6b63\u898f\u5316\u70ba\u7368\u7acb\u8cc7\u6599\u8868\uff0c\u537b\u672a\u7d93\u904e\u5be6\u969b\u9a57\u8b49\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<li><strong>\u6b63\u898f\u5316\u4e0d\u8db3\uff1a<\/strong>\u5132\u5b58\u91cd\u8907\u8cc7\u6599\uff0c\u4f8b\u5982\u5728\u6bcf\u500b\u8a02\u55ae\u8cc7\u6599\u8868\u4e2d\u90fd\u5132\u5b58\u5ba2\u6236\u5730\u5740\uff0c\u6703\u5c0e\u81f4\u66f4\u65b0\u7570\u5e38\u3002\u82e5\u5ba2\u6236\u642c\u5bb6\uff0c\u5fc5\u9808\u66f4\u65b0\u8207\u5176\u76f8\u95dc\u7684\u6bcf\u4e00\u7b46\u8a18\u9304\u3002\u82e5\u672a\u80fd\u5982\u6b64\u57f7\u884c\uff0c\u5c07\u5c0e\u81f4\u8cc7\u6599\u72c0\u614b\u4e0d\u4e00\u81f4\u3002<\/li>\n<li><strong>\u5ffd\u7565\u91dd\u5c0d\u8b80\u53d6\u5bc6\u96c6\u578b\u5de5\u4f5c\u8ca0\u8f09\u7684\u53cd\u6b63\u898f\u5316\uff1a<\/strong>\u5728\u8b80\u53d6\u6b21\u6578\u9060\u8d85\u904e\u5beb\u5165\u6b21\u6578\u7684\u60c5\u5883\u4e0b\uff0c\u53cd\u6b63\u898f\u5316\u53ef\u4f5c\u70ba\u4e00\u7a2e\u6709\u6548\u7b56\u7565\u3002\u900f\u904e\u5feb\u53d6\u91cd\u8907\u8cc7\u6599\uff0c\u53ef\u964d\u4f4e\u9023\u63a5\u64cd\u4f5c\u7684\u8ca0\u64d4\uff0c\u524d\u63d0\u662f\u5fc5\u9808\u6709\u6a5f\u5236\u78ba\u4fdd\u8cc7\u6599\u540c\u6b65\u3002<\/li>\n<\/ul>\n<h2>3. \u547d\u540d\u6163\u4f8b\u6df7\u4e82 \ud83c\udff7\ufe0f<\/h2>\n<p>\u5be6\u9ad4\u3001\u5c6c\u6027\u8207\u95dc\u4fc2\u547d\u540d\u7684\u4e00\u81f4\u6027\u5c0d\u65bc\u7dad\u8b77\u6027\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u8cc7\u6599\u5eab\u7d50\u69cb\u4e2d\u90e8\u5206\u8cc7\u6599\u8868\u4f7f\u7528\u86c7\u5f62\u547d\u540d\u6cd5\uff08snake_case\uff09\uff0c\u800c\u5176\u4ed6\u8cc7\u6599\u8868\u4f7f\u7528\u99dd\u5cf0\u547d\u540d\u6cd5\uff08CamelCase\uff09\uff0c\u5c07\u4f7f\u958b\u767c\u4eba\u54e1\u611f\u5230\u56f0\u60d1\uff0c\u4e26\u589e\u52a0\u64b0\u5beb\u67e5\u8a62\u6642\u767c\u751f\u8a9e\u6cd5\u932f\u8aa4\u7684\u6a5f\u7387\u3002<\/p>\n<ul>\n<li><strong>\u5927\u5c0f\u5beb\u4f7f\u7528\u4e0d\u4e00\u81f4\uff1a<\/strong>\u6df7\u5408\u4f7f\u7528 <code>user_id<\/code> \u8207 <code>userId<\/code>\u65bc\u540c\u4e00\u7d50\u69cb\u4e2d\u6df7\u7528\uff0c\u5c07\u4f7f\u64b0\u5beb\u4f9d\u8cf4\u6163\u4f8b\u7684\u81ea\u52d5\u5316\u8173\u672c\u6216 ORM\uff08\u7269\u4ef6\u95dc\u4fc2\u5c0d\u61c9\u5668\uff09\u8b8a\u5f97\u56f0\u96e3\u3002<\/li>\n<li><strong>\u63cf\u8ff0\u6027\u4e0d\u8db3\u7684\u540d\u7a31\uff1a<\/strong> \u4f7f\u7528\u5982 <code>tbl_1<\/code> \u6216 <code>field_a<\/code> \u4e26\u672a\u63d0\u4f9b\u4efb\u4f55\u8a9e\u7fa9\u610f\u7fa9\u3002\u672a\u4f86\u7684\u7dad\u8b77\u4eba\u54e1\u5728\u6c92\u6709\u5916\u90e8\u6587\u4ef6\u7684\u60c5\u6cc1\u4e0b\uff0c\u5c07\u96e3\u4ee5\u7406\u89e3\u8a72\u8cc7\u6599\u8868\u7684\u76ee\u7684\u3002<\/li>\n<li><strong>\u4fdd\u7559\u95dc\u9375\u5b57\uff1a<\/strong> \u6b04\u4f4d\u547d\u540d <code>order<\/code> \u6216 <code>group<\/code> \u53ef\u80fd\u8207 SQL \u8a9e\u6cd5\u885d\u7a81\u3002\u9019\u4e9b\u540d\u7a31\u5728\u67e5\u8a62\u4e2d\u9700\u8981\u7279\u5225\u8f49\u7fa9\uff0c\u4e14\u5728 SQL \u8a9e\u6cd5\u7248\u672c\u66f4\u65b0\u6642\u5bb9\u6613\u5931\u6548\u3002<\/li>\n<\/ul>\n<h3>\u7d71\u4e00\u547d\u540d\u898f\u7bc4<\/h3>\n<p>\u63a1\u7528\u56b4\u683c\u7684\u547d\u540d\u653f\u7b56\u3002\u8cc7\u6599\u8868\u61c9\u4f7f\u7528\u8907\u6578\u540d\u8a5e\uff08\u4f8b\u5982\uff0c<code>customers<\/code>\uff09\uff0c\u800c\u6b04\u4f4d\u61c9\u4f7f\u7528\u55ae\u6578\u540d\u8a5e\u4f86\u63cf\u8ff0\u8cc7\u6599\uff08\u4f8b\u5982\uff0c<code>first_name<\/code>\uff09\u3002\u4e3b\u9375\u61c9\u9075\u5faa\u5982 <code>_id<\/code> \u6216 <code>_pk<\/code> \u7684\u6163\u4f8b\u3002\u5916\u9375\u61c9\u53cd\u6620\u6240\u53c3\u8003\u7684\u8cc7\u6599\u8868\u540d\u7a31\uff0c\u4f8b\u5982 <code>customer_id<\/code>.<\/p>\n<h2>4. \u9060\u5ea6\u8aa4\u89e3 \ud83d\udcc9<\/h2>\n<p>\u9060\u5ea6\u5b9a\u7fa9\u4e86\u5169\u500b\u8cc7\u6599\u8868\u4e2d\u8a18\u9304\u4e4b\u9593\u7684\u6578\u503c\u95dc\u4fc2\u3002\u8aa4\u89e3\u9019\u500b\u57fa\u672c\u6982\u5ff5\u6703\u5c0e\u81f4\u8cc7\u6599\u5b8c\u6574\u6027\u88ab\u7834\u58de\uff0c\u4e26\u5728\u61c9\u7528\u7a0b\u5f0f\u67e5\u8a62\u4e2d\u7522\u751f\u908f\u8f2f\u932f\u8aa4\u3002<\/p>\n<ul>\n<li><strong>\u6df7\u6dc6 1:1 \u8207 1:N\uff1a<\/strong> \u7576\u696d\u52d9\u908f\u8f2f\u652f\u63f4\u591a\u7b46\u8a18\u9304\u6642\uff0c\u4ecd\u8a2d\u8a08\u70ba\u4e00\u5c0d\u4e00\u95dc\u4fc2\uff0c\u6703\u9020\u6210\u4eba\u70ba\u9650\u5236\u3002\u4f8b\u5982\uff0c\u9650\u5236\u4f7f\u7528\u8005\u53ea\u80fd\u4e0a\u50b3\u4e00\u5f35\u982d\u50cf\uff0c\u800c\u5be6\u969b\u4e0a\u61c9\u5141\u8a31\u4e0a\u50b3\u76f8\u7c3f\u3002<\/li>\n<li><strong>\u5ffd\u7565\u53ef\u9078\u6027\uff1a<\/strong> \u5224\u65b7\u95dc\u4fc2\u662f\u5426\u70ba\u5f37\u5236\u6027\u6216\u53ef\u9078\u6027\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u8cc7\u6599\u8868\u8981\u6c42\u5916\u9375\uff0c\u5247\u95dc\u4fc2\u70ba\u5f37\u5236\u6027\u3002\u82e5\u5916\u9375\u6b04\u4f4d\u5141\u8a31 NULL \u503c\uff0c\u5247\u95dc\u4fc2\u70ba\u53ef\u9078\u6027\u3002\u672a\u52a0\u4ee5\u8a18\u9304\u5c07\u5c0e\u81f4\u932f\u8aa4\uff0c\u4f7f\u61c9\u7528\u7a0b\u5f0f\u5617\u8a66\u63d2\u5165\u7121\u6709\u6548\u53c3\u8003\u7684\u8a18\u9304\u3002<\/li>\n<li><strong>\u65b9\u5411\u6df7\u6dc6\uff1a<\/strong> \u95dc\u4fc2\u5177\u6709\u65b9\u5411\u6027\u3002\u4e00\u500b <code>\u4f7f\u7528\u8005<\/code> \u6709\u8a31\u591a <code>\u6587\u7ae0<\/code>\uff0c\u4f46\u4e00\u5247 <code>\u6587\u7ae0<\/code> \u5c6c\u65bc\u4e00\u4f4d <code>\u4f7f\u7528\u8005<\/code>\u3002\u5728\u8cc7\u6599\u7d50\u69cb\u4e2d\u53cd\u8f49\u6b64\u65b9\u5411\u6703\u7834\u58de\u7d1a\u806f\u522a\u9664\u6216\u66f4\u65b0\u7684\u908f\u8f2f\u3002<\/li>\n<\/ul>\n<h2>5. \u8cc7\u6599\u985e\u578b\u4e0d\u4e00\u81f4 \ud83d\udcca<\/h2>\n<p>\u70ba\u6b04\u4f4d\u9078\u64c7\u932f\u8aa4\u7684\u8cc7\u6599\u985e\u578b\u6703\u5f71\u97ff\u5132\u5b58\u6548\u7387\u3001\u67e5\u8a62\u901f\u5ea6\u548c\u8cc7\u6599\u6e96\u78ba\u6027\u3002\u9019\u5728\u521d\u671f\u8a2d\u8a08\u968e\u6bb5\u7d93\u5e38\u88ab\u5ffd\u7565\u3002<\/p>\n<ul>\n<li><strong>\u4f7f\u7528 VARCHAR \u5b58\u653e\u56fa\u5b9a\u8cc7\u6599\uff1a<\/strong> \u5c07\u570b\u5bb6\u4ee3\u78bc\u6216\u72c0\u614b\u65d7\u6a19\u5132\u5b58\u5728 <code>VARCHAR<\/code>\u6b04\u4f4d\u6703\u6d6a\u8cbb\u5132\u5b58\u7a7a\u9593\u4e26\u6e1b\u6162\u6bd4\u8f03\u901f\u5ea6\u3002\u5c0d\u65bc\u56fa\u5b9a\u503c\u96c6\u5408\uff0c\u4f7f\u7528\u6574\u6578\u6216\u7279\u5b9a\u7684\u5217\u8209\u985e\u578b\u66f4\u70ba\u9ad8\u6548\u3002<\/li>\n<li><strong>\u6574\u6578\u6ea2\u4f4d\u98a8\u96aa\uff1a<\/strong> \u4f7f\u7528\u6a19\u6e96 <code>INT<\/code> \u4f86\u8655\u7406\u53ef\u80fd\u8d85\u904e\u4e8c\u5341\u5104\u7684\u91d1\u878d\u4ea4\u6613\u6216\u4f7f\u7528\u8005\u8b58\u5225\u78bc\uff0c\u53ef\u80fd\u5c0e\u81f4\u975c\u9ed8\u5931\u6557\u3002\u4f7f\u7528 <code>BIGINT<\/code> \u6216 <code>DECIMAL<\/code> \u7528\u65bc\u91d1\u9322\u503c\u53ef\u907f\u514d\u6d6e\u9ede\u985e\u578b\u76f8\u95dc\u7684\u56db\u6368\u4e94\u5165\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6642\u9593\u6233\u8a18\u7cbe\u78ba\u5ea6\uff1a<\/strong> \u4f7f\u7528 <code>DATETIME<\/code> \u5728\u672a\u8003\u616e\u6642\u5340\u5132\u5b58\u7684\u60c5\u6cc1\u4e0b\u4f7f\u7528 DATETIME\uff0c\u7576\u61c9\u7528\u7a0b\u5f0f\u670d\u52d9\u4e0d\u540c\u5730\u5340\u7684\u4f7f\u7528\u8005\u6642\u53ef\u80fd\u5c0e\u81f4\u932f\u8aa4\u3002\u5c07\u6642\u9593\u6233\u8a18\u5132\u5b58\u5728 UTC\uff0c\u4e26\u5728\u61c9\u7528\u7a0b\u5f0f\u5c64\u7d1a\u9032\u884c\u8f49\u63db\uff0c\u662f\u4e00\u7a2e\u66f4\u5b89\u5168\u7684\u6a21\u5f0f\u3002<\/li>\n<\/ul>\n<h2>6. \u91d1\u9470\u7ba1\u7406\u932f\u8aa4 \ud83d\udd11<\/h2>\n<p>\u4e3b\u9375\u548c\u5916\u9375\u662f\u95dc\u806f\u5f0f\u5b8c\u6574\u6027\u7684\u91cd\u8981\u652f\u67f1\u3002\u5b9a\u7fa9\u9019\u4e9b\u91d1\u9470\u6642\u7684\u932f\u8aa4\u6703\u640d\u5bb3\u6574\u500b\u8cc7\u6599\u5eab\u7d50\u69cb\u3002<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u8907\u5408\u91d1\u9470\u4ee5\u6c42\u7c21\u5316\uff1a<\/strong> \u96d6\u7136\u8907\u5408\u91d1\u9470\u662f\u6709\u6548\u7684\uff0c\u4f46\u5c07\u5176\u7528\u4f5c\u4e3b\u9375\u6703\u4f7f\u5916\u9375\u95dc\u4fc2\u8b8a\u5f97\u8907\u96dc\u4e14\u66f4\u96e3\u7d22\u5f15\u3002\u4f7f\u7528\u4ee3\u7406\u91d1\u9470\uff08\u5982 UUID \u6216\u81ea\u52d5\u905e\u589e\u6574\u6578\uff09\u901a\u5e38\u80fd\u7c21\u5316\u61c9\u7528\u7a0b\u5f0f\u908f\u8f2f\u3002<\/li>\n<li><strong>\u7f3a\u5c11\u5916\u9375\u7d04\u675f\uff1a<\/strong>\u5728\u5b50\u8868\u4e2d\u5b9a\u7fa9\u6b04\u4f4d\u4f46\u672a\u6dfb\u52a0\u7269\u7406\u7d04\u675f\uff0c\u6703\u5c0e\u81f4\u5b64\u7acb\u8a18\u9304\u7684\u5b58\u5728\u3002\u9019\u6703\u7834\u58de\u5f15\u7528\u5b8c\u6574\u6027\uff0c\u4e26\u4f7f\u6578\u64da\u6e05\u7406\u8b8a\u5f97\u56f0\u96e3\u3002<\/li>\n<li><strong>\u7d1a\u806f\u522a\u9664\u98a8\u96aa\uff1a<\/strong>\u5728\u672a\u7406\u89e3\u696d\u52d9\u5f71\u97ff\u7684\u60c5\u6cc1\u4e0b\u914d\u7f6e\u7d1a\u806f\u522a\u9664\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u610f\u5916\u7684\u6578\u64da\u4e1f\u5931\u3002\u522a\u9664\u7236\u8a18\u9304\u4e26\u4e0d\u61c9\u7e3d\u662f\u522a\u9664\u6240\u6709\u76f8\u95dc\u7684\u5b50\u8a18\u9304\uff0c\u7279\u5225\u662f\u7576\u9019\u4e9b\u8a18\u9304\u5c6c\u65bc\u6b77\u53f2\u5be9\u8a08\u8ffd\u8e64\u6642\u3002<\/li>\n<\/ul>\n<h2>\u5e38\u898b\u932f\u8aa4\u8207\u89e3\u6c7a\u65b9\u6848\u5c0d\u6bd4<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u932f\u8aa4<\/th>\n<th>\u5f8c\u679c<\/th>\n<th>\u4fee\u6b63\u63aa\u65bd<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u591a\u5c0d\u591a\u76f4\u63a5\u9023\u7d50<\/td>\n<td>\u7121\u6cd5\u5132\u5b58\u95dc\u4fc2\u5c6c\u6027<\/td>\n<td>\u5efa\u7acb\u4e00\u500b\u5305\u542b\u5169\u500b\u5916\u9375\u7684\u4e2d\u9593\u8868<\/td>\n<\/tr>\n<tr>\n<td>\u91cd\u8907\u7684\u6578\u64da\u5132\u5b58<\/td>\n<td>\u66f4\u65b0\u7570\u5e38\u8207\u4e0d\u4e00\u81f4<\/td>\n<td>\u898f\u7bc4\u5316\u81f3\u7b2c\u4e09\u7bc4\u5f0f\u4e26\u4f7f\u7528\u5916\u9375<\/td>\n<\/tr>\n<tr>\n<td>\u975e\u63cf\u8ff0\u6027\u7684\u6b04\u4f4d\u540d\u7a31<\/td>\n<td>\u9ad8\u7dad\u8b77\u6210\u672c\u8207\u6df7\u6dc6<\/td>\n<td>\u5be6\u65bd\u56b4\u683c\u7684\u547d\u540d\u898f\u7bc4<\/td>\n<\/tr>\n<tr>\n<td>\u5916\u9375\u4e0a\u7f3a\u5c11\u7d22\u5f15<\/td>\n<td>\u9023\u63a5\u6027\u80fd\u7de9\u6162<\/td>\n<td>\u5728\u6240\u6709\u5916\u9375\u6b04\u4f4d\u4e0a\u6dfb\u52a0\u7d22\u5f15<\/td>\n<\/tr>\n<tr>\n<td>\u8cc7\u6599\u985e\u578b\u932f\u8aa4<\/td>\n<td>\u5132\u5b58\u7a7a\u9593\u81a8\u8139\u6216\u8a08\u7b97\u932f\u8aa4<\/td>\n<td>\u6839\u64da\u8cc7\u6599\u7279\u6027\u5339\u914d\u985e\u578b\uff08\u4f8b\u5982\uff1aINT \u8207 VARCHAR\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>7. \u5be6\u65bd\u524d\u5be9\u67e5\u6e05\u55ae \u2705<\/h2>\n<p>\u5728\u90e8\u7f72\u8cc7\u6599\u7d50\u69cb\u4e4b\u524d\uff0c\u9032\u884c\u56b4\u683c\u7684\u5be9\u67e5\u4ee5\u767c\u73fe\u8a2d\u8a08\u7f3a\u9677\u3002\u6b64\u6e05\u55ae\u6db5\u84cb\u4e86\u4e0a\u8ff0\u8b58\u5225\u51fa\u7684\u95dc\u9375\u9818\u57df\u3002<\/p>\n<ul>\n<li><strong>\u9a57\u8b49\u5be6\u9ad4\u540d\u7a31\uff1a<\/strong> \u6240\u6709\u8868\u683c\u7684\u547d\u540d\u662f\u5426\u4e00\u81f4\uff1f\u5b83\u5011\u662f\u5426\u4ee3\u8868\u660e\u78ba\u7684\u7368\u7acb\u6982\u5ff5\uff1f<\/li>\n<li><strong>\u6aa2\u67e5\u57fa\u6578\uff1a<\/strong> \u6240\u6709\u95dc\u4fc2\u662f\u5426\u6e96\u78ba\u53cd\u6620\u696d\u52d9\u898f\u5247\uff1f\u6700\u5c0f\u8207\u6700\u5927\u53c3\u8207\u7a0b\u5ea6\u662f\u5426\u660e\u78ba\uff1f<\/li>\n<li><strong>\u9a57\u8b49\u9375\uff1a<\/strong> \u6bcf\u4e00\u884c\u662f\u5426\u6709\u552f\u4e00\u7684\u8b58\u5225\u7b26\uff1f\u6240\u6709\u95dc\u4fc2\u662f\u5426\u90fd\u5b58\u5728\u5916\u9375\uff1f<\/li>\n<li><strong>\u5be9\u67e5\u8cc7\u6599\u985e\u578b\uff1a<\/strong> \u6b04\u4f4d\u985e\u578b\u662f\u5426\u652f\u63f4\u8cc7\u6599\u9810\u671f\u7684\u7bc4\u570d\u8207\u7cbe\u78ba\u5ea6\uff1f<\/li>\n<li><strong>\u8a55\u4f30\u898f\u7bc4\u5316\uff1a<\/strong> \u8cc7\u6599\u7d50\u69cb\u5728\u5197\u9918\u8207\u9023\u63a5\u8907\u96dc\u5ea6\u4e4b\u9593\u662f\u5426\u53d6\u5f97\u5e73\u8861\uff1f\u662f\u5426\u7b26\u5408\u61c9\u7528\u7a0b\u5f0f\u7684\u9700\u6c42\uff1f<\/li>\n<li><strong>\u5b89\u5168\u6027\u6aa2\u67e5\uff1a<\/strong> \u654f\u611f\u6b04\u4f4d\u662f\u5426\u5df2\u6b63\u78ba\u6a19\u8a18\uff1f\u662f\u5426\u6709\u8cc7\u6599\u975c\u614b\u52a0\u5bc6\u7684\u8a08\u756b\uff1f<\/li>\n<li><strong>\u53ef\u64f4\u5c55\u6027\uff1a<\/strong> \u8cc7\u6599\u7d50\u69cb\u80fd\u5426\u61c9\u5c0d\u9810\u671f\u7684\u8cc7\u6599\u91cf\u589e\u9577\uff1f\u5927\u578b\u8cc7\u6599\u8868\u662f\u5426\u8003\u616e\u4e86\u5206\u5272\u7b56\u7565\uff1f<\/li>\n<\/ul>\n<h2>8. \u6587\u4ef6\u7de8\u5beb\u8207\u6f14\u9032 \ud83d\udcdd<\/h2>\n<p>ERD \u4e0d\u662f\u975c\u614b\u6587\u4ef6\u3002\u696d\u52d9\u9700\u6c42\u6703\u8b8a\u66f4\uff0c\u8cc7\u6599\u7d50\u69cb\u4e5f\u5fc5\u9808\u96a8\u4e4b\u6f14\u9032\u3002\u5728\u7dad\u8b77\u5716\u793a\u7684\u540c\u6642\u4fdd\u6301\u6587\u4ef6\u66f4\u65b0\uff0c\u53ef\u78ba\u4fdd\u8a2d\u8a08\u610f\u5716\u9577\u671f\u5f97\u4ee5\u4fdd\u5b58\u3002<\/p>\n<ul>\n<li><strong>\u7248\u672c\u63a7\u5236\uff1a<\/strong> \u5c07 ERD \u6a94\u6848\u8207\u61c9\u7528\u7a0b\u5f0f\u7a0b\u5f0f\u78bc\u4e00\u540c\u5132\u5b58\u5728\u7248\u672c\u63a7\u5236\u7cfb\u7d71\u4e2d\u3002\u5982\u6b64\u53ef\u8ffd\u8e64\u8b8a\u66f4\uff0c\u4e26\u5728\u8a2d\u8a08\u6c7a\u7b56\u51fa\u73fe\u554f\u984c\u6642\u9032\u884c\u9084\u539f\u3002<\/li>\n<li><strong>\u8b8a\u66f4\u7d00\u9304\uff1a<\/strong> \u8a18\u9304\u8b8a\u66f4\u7684\u539f\u56e0\u3002\u7406\u89e3\u8cc7\u6599\u7d50\u69cb\u4fee\u6539\u80cc\u5f8c\u7684\u8003\u91cf\uff0c\u6709\u52a9\u65bc\u672a\u4f86\u958b\u767c\u8005\u907f\u514d\u91cd\u8e48\u8986\u8f4d\u3002<\/li>\n<li><strong>\u8996\u89ba\u6e05\u6670\u5ea6\uff1a<\/strong> \u78ba\u4fdd\u5716\u793a\u96a8\u8457\u898f\u6a21\u64f4\u5927\u4ecd\u4fdd\u6301\u53ef\u8b80\u6027\u3002\u5c07\u76f8\u95dc\u8cc7\u6599\u8868\u5206\u7d44\uff0c\u4e26\u4f7f\u7528\u4e00\u81f4\u7684\u7dda\u689d\u6a23\u5f0f\u4f86\u8868\u793a\u95dc\u4fc2\u985e\u578b\u3002<\/li>\n<\/ul>\n<h2>9. \u8a2d\u8a08\u9078\u64c7\u7684\u6548\u80fd\u5f71\u97ff \u26a1<\/h2>\n<p>\u60a8\u7684 ERD \u7d50\u69cb\u76f4\u63a5\u5f71\u97ff\u8cc7\u6599\u5eab\u5f15\u64ce\u5b58\u53d6\u8207\u5beb\u5165\u8cc7\u6599\u7684\u65b9\u5f0f\u3002\u4e0d\u826f\u7684\u8a2d\u8a08\u9078\u64c7\u6703\u7522\u751f\u96b1\u85cf\u7684\u6548\u80fd\u6210\u672c\uff0c\u50c5\u5728\u8ca0\u8f09\u589e\u52a0\u6642\u624d\u6703\u986f\u73fe\u3002<\/p>\n<ul>\n<li><strong>\u9023\u63a5\u8907\u96dc\u5ea6\uff1a<\/strong> \u6df1\u5ea6\u898f\u7bc4\u5316\u7684\u7d50\u69cb\u9700\u8981\u591a\u6b21\u9023\u63a5\u3002\u82e5\u9019\u4e9b\u9023\u63a5\u672a\u900f\u904e\u9069\u7576\u7d22\u5f15\u512a\u5316\uff0c\u67e5\u8a62\u57f7\u884c\u6642\u9593\u5c07\u96a8\u8457\u8cc7\u6599\u589e\u9577\u5448\u7dda\u6027\u589e\u52a0\u3002<\/li>\n<li><strong>\u5beb\u5165\u541e\u5410\u91cf\uff1a<\/strong> 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