{"id":1598,"date":"2026-03-24T23:50:44","date_gmt":"2026-03-24T23:50:44","guid":{"rendered":"https:\/\/www.viz-read.com\/tw\/7-erd-mistakes-break-databases-avoid\/"},"modified":"2026-03-24T23:50:44","modified_gmt":"2026-03-24T23:50:44","slug":"7-erd-mistakes-break-databases-avoid","status":"publish","type":"post","link":"https:\/\/www.viz-read.com\/tw\/7-erd-mistakes-break-databases-avoid\/","title":{"rendered":"7 \u500b\u6703\u7834\u58de\u8cc7\u6599\u5eab\u7684 ERD \u932f\u8aa4\uff08\u4ee5\u53ca\u5982\u4f55\u907f\u514d\u5b83\u5011\uff09"},"content":{"rendered":"<p>\u8a2d\u8a08\u7a69\u5065\u7684\u8cc7\u6599\u7d50\u69cb\u662f\u4efb\u4f55\u53ef\u9760\u8edf\u9ad4\u7cfb\u7d71\u7684\u57fa\u77f3\u3002\u5be6\u9ad4\u95dc\u4fc2\u5716\uff08ERD\uff09\u4f5c\u70ba\u8cc7\u6599\u5132\u5b58\u3001\u9023\u7d50\u8207\u53d6\u5f97\u7684\u85cd\u5716\u3002\u7576\u6b64\u85cd\u5716\u5b58\u5728\u7f3a\u9677\u6642\uff0c\u5f8c\u679c\u5c07\u6ce2\u53ca\u6574\u500b\u61c9\u7528\u7a0b\u5f0f\uff0c\u5f71\u97ff\u6548\u80fd\u3001\u8cc7\u6599\u5b8c\u6574\u6027\u8207\u958b\u767c\u901f\u5ea6\u3002\u8a31\u591a\u5718\u968a\u5728\u672a\u9a57\u8b49\u5176\u8cc7\u6599\u7d50\u69cb\u8a2d\u8a08\u7684\u60c5\u6cc1\u4e0b\u4fbf\u5306\u5fd9\u9032\u5165\u5be6\u4f5c\u968e\u6bb5\uff0c\u5c0e\u81f4\u5f8c\u7e8c\u96e3\u4ee5\u4fee\u6b63\u7684\u7d50\u69cb\u6027\u50b5\u52d9\u3002<\/p>\n<p>\u672c\u6307\u5357\u63a2\u8a0e\u8cc7\u6599\u5eab\u5efa\u6a21\u4e2d\u767c\u73fe\u7684\u4e03\u500b\u95dc\u9375\u932f\u8aa4\u3002\u6bcf\u4e00\u9ede\u90fd\u8a73\u7d30\u8aaa\u660e\u5176\u7279\u5b9a\u7684\u6280\u8853\u5f71\u97ff\uff0c\u4e26\u63d0\u4f9b\u53ef\u57f7\u884c\u7684\u6307\u5c0e\u539f\u5247\u4ee5\u907f\u514d\u9019\u4e9b\u932f\u8aa4\u3002\u900f\u904e\u7406\u89e3\u6b63\u898f\u5316\u3001\u7d04\u675f\u8207\u95dc\u4fc2\u5c0d\u61c9\u7684\u6a5f\u5236\uff0c\u60a8\u4fbf\u80fd\u5efa\u69cb\u51fa\u53ef\u64f4\u5c55\u4e14\u4e0d\u72a7\u7272\u7a69\u5b9a\u6027\u7684\u7cfb\u7d71\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Whimsical infographic illustrating 7 common Entity Relationship Diagram mistakes that break databases: missing primary keys, ambiguous cardinality, poor normalization, circular dependencies, inconsistent naming, hardcoded values, and neglected scalability. Each pitfall is depicted with playful cartoon visuals and practical solutions, guiding developers toward robust, scalable database design best practices.\" decoding=\"async\" src=\"https:\/\/www.viz-read.com\/wp-content\/uploads\/2026\/03\/7-erd-mistakes-database-design-whimsical-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>1. \u7f3a\u5c11\u6216\u5f31\u5316\u7684\u4e3b\u9375 \ud83d\udd11<\/h2>\n<p>\u4e3b\u9375\u662f\u8868\u683c\u4e2d\u8a18\u9304\u7684\u552f\u4e00\u8b58\u5225\u78bc\u3002\u5b83\u662f\u78ba\u4fdd\u6bcf\u4e00\u5217\u90fd\u7368\u7279\u4e14\u53ef\u53d6\u5f97\u7684\u95dc\u9375\u3002\u907a\u6f0f\u4e3b\u9375\u6216\u8a2d\u8a08\u4e0d\u4f73\uff0c\u662f\u8cc7\u6599\u5eab\u67b6\u69cb\u4e2d\u6700\u57fa\u672c\u7684\u932f\u8aa4\u4e4b\u4e00\u3002<\/p>\n<h3>\u6280\u8853\u4e0a\u7684\u5f8c\u679c<\/h3>\n<ul>\n<li><strong>\u8cc7\u6599\u91cd\u8907\uff1a<\/strong> \u82e5\u7121\u552f\u4e00\u6027\u7d04\u675f\uff0c\u8cc7\u6599\u5eab\u7121\u6cd5\u9632\u6b62\u91cd\u8907\u8a18\u9304\u3002\u9019\u5c07\u5c0e\u81f4\u5831\u8868\u4e0d\u4e00\u81f4\u8207\u8cc7\u6599\u5b8c\u6574\u6027\u554f\u984c\u3002<\/li>\n<li><strong>\u9023\u63a5\u6548\u80fd\uff1a<\/strong> \u5916\u9375\u95dc\u4fc2\u4f9d\u8cf4\u4e3b\u9375\u9032\u884c\u9ad8\u6548\u7d22\u5f15\u3002\u82e5\u4e3b\u9375\u907a\u6f0f\u6216\u672a\u5efa\u7acb\u7d22\u5f15\uff0c\u9023\u63a5\u6642\u5c07\u88ab\u8feb\u9032\u884c\u5168\u8868\u6383\u63cf\uff0c\u5927\u5e45\u964d\u4f4e\u67e5\u8a62\u57f7\u884c\u901f\u5ea6\u3002<\/li>\n<li><strong>\u66f4\u65b0\u8907\u96dc\u5ea6\uff1a<\/strong> \u82e5\u9700\u66f4\u65b0\u8a18\u9304\uff0c\u7cfb\u7d71\u5fc5\u9808\u4f9d\u8cf4\u975e\u552f\u4e00\u6b04\u4f4d\u4f86\u5c0b\u627e\u8a72\u5217\u3002\u82e5\u6709\u591a\u5217\u7b26\u5408\u641c\u5c0b\u689d\u4ef6\uff0c\u66f4\u65b0\u53ef\u80fd\u61c9\u7528\u65bc\u975e\u9810\u671f\u7684\u8cc7\u6599\u3002<\/li>\n<\/ul>\n<h3>\u907f\u514d\u6b64\u554f\u984c\u7684\u6700\u4f73\u5be6\u52d9<\/h3>\n<ul>\n<li>\u70ba\u6bcf\u500b\u8868\u683c\u660e\u78ba\u5b9a\u7fa9\u4e3b\u9375\uff0c\u5373\u4f7f\u770b\u4f3c\u91cd\u8907\u3002<\/li>\n<li>\u512a\u5148\u4f7f\u7528\u4ee3\u7406\u9375\uff08\u81ea\u52d5\u905e\u589e\u7684\u6574\u6578\u6216 UUID\uff09\u800c\u975e\u81ea\u7136\u9375\uff08\u5982\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u6216\u96fb\u8a71\u865f\u78bc\uff09\uff0c\u4ee5\u907f\u514d\u696d\u52d9\u908f\u8f2f\u8b8a\u66f4\u5f71\u97ff\u8cc7\u6599\u7d50\u69cb\u3002<\/li>\n<li>\u78ba\u4fdd\u4e3b\u9375\u6b04\u4f4d\u4e0d\u53ef\u70ba\u7a7a\u503c\u3002<\/li>\n<li>\u50c5\u5728\u55ae\u4e00\u6b04\u4f4d\u7121\u6cd5\u552f\u4e00\u8b58\u5225\u4e00\u5217\u6642\u624d\u4f7f\u7528\u8907\u5408\u9375\uff0c\u4f8b\u5982\u5728\u591a\u5c0d\u591a\u95dc\u4fc2\u7684\u8868\u683c\u4e2d\u3002<\/li>\n<\/ul>\n<h2>2. \u6a21\u7cca\u7684\u95dc\u4fc2\u57fa\u6578 \ud83d\udd04<\/h2>\n<p>\u57fa\u6578\u5b9a\u7fa9\u4e86\u5169\u500b\u8868\u683c\u4e2d\u8a18\u9304\u4e4b\u9593\u7684\u6578\u503c\u95dc\u4fc2\u3002\u5e38\u898b\u985e\u578b\u5305\u62ec\u4e00\u5c0d\u4e00\u3001\u4e00\u5c0d\u591a\u8207\u591a\u5c0d\u591a\u3002\u5728\u5716\u8868\u4e2d\u932f\u8aa4\u5730\u8868\u793a\u9019\u4e9b\u95dc\u4fc2\uff0c\u5c07\u5c0e\u81f4\u5be6\u969b\u8cc7\u6599\u5eab\u7d50\u69cb\u4e0a\u7684\u4e0d\u5339\u914d\u3002<\/p>\n<h3>\u5e38\u898b\u9677\u9631<\/h3>\n<ul>\n<li><strong>\u5047\u8a2d\u70ba\u4e00\u5c0d\u591a\uff1a<\/strong>\u8a2d\u8a08\u5e2b\u5e38\u5728\u591a\u5c0d\u591a\u95dc\u4fc2\u5b58\u5728\u6642\uff0c\u9810\u8a2d\u70ba\u4e00\u5c0d\u591a\u95dc\u4fc2\u3002\u4f8b\u5982\uff0c\u4e00\u540d\u5b78\u751f\u53ef\u8a3b\u518a\u591a\u9580\u8ab2\u7a0b\uff0c\u800c\u4e00\u9580\u8ab2\u7a0b\u4e5f\u53ef\u5305\u542b\u591a\u540d\u5b78\u751f\u3002\u82e5\u5c07\u6b64\u95dc\u4fc2\u5efa\u6a21\u70ba\u4e00\u5c0d\u591a\uff0c\u5247\u9700\u5728\u591a\u500b\u8ab2\u7a0b\u6b04\u4f4d\u4e2d\u91cd\u8907\u5b78\u751f\u8cc7\u6599\u3002<\/li>\n<li><strong>\u672a\u6a19\u793a\u7684\u7dda\u689d\uff1a<\/strong>ERD \u7684\u7dda\u689d\u61c9\u6a19\u793a\u57fa\u6578\uff08\u4f8b\u5982\u70cf\u9d09\u8173\u7b26\u865f\uff09\u3002\u82e5\u672a\u6a19\u793a\uff0c\u958b\u767c\u4eba\u54e1\u5c07\u7121\u6cd5\u5224\u65b7\u8cc7\u6599\u4e4b\u9593\u7684\u95dc\u806f\u65b9\u5f0f\u3002<\/li>\n<li><strong>\u5ffd\u7565\u53ef\u7a7a\u6027\uff1a<\/strong> \u82e5\u4e00\u5c0d\u4e00\u95dc\u4fc2\u70ba\u53ef\u9078\uff0c\u5916\u9375\u6b04\u4f4d\u53ef\u80fd\u5141\u8a31\u7a7a\u503c\u3002\u82e5\u672a\u5efa\u6a21\u6b64\u7d04\u675f\uff0c\u5c07\u5c0e\u81f4\u5b64\u7acb\u8a18\u9304\u7684\u7522\u751f\u3002<\/li>\n<\/ul>\n<h3>\u6b63\u78ba\u7684\u505a\u6cd5<\/h3>\n<ul>\n<li>\u660e\u78ba\u4f7f\u7528\u95dc\u806f\u8868\uff08junction table\uff09\u4f86\u6620\u5c04\u591a\u5c0d\u591a\u95dc\u4fc2\uff0c\u8a72\u8868\u5305\u542b\u5169\u500b\u76f8\u95dc\u8868\u683c\u7684\u5916\u9375\u3002<\/li>\n<li>\u5728\u5716\u8868\u7dda\u689d\u4e0a\u6e05\u695a\u6a19\u793a\u57fa\u6578\u3002<\/li>\n<li>\u5957\u7528\u8cc7\u6599\u5eab\u7d04\u675f\uff08\u5982\u5728\u5916\u9375\u4e0a\u4f7f\u7528 UNIQUE \u7d04\u675f\uff09\u4ee5\u5f37\u5236\u57f7\u884c\u5716\u8868\u7684\u908f\u8f2f\u3002<\/li>\n<\/ul>\n<table>\n<thead>\n<tr>\n<th>\u95dc\u4fc2\u985e\u578b<\/th>\n<th>\u5be6\u65bd\u7b56\u7565<\/th>\n<th>\u5e38\u898b\u932f\u8aa4<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u4e00\u5c0d\u4e00<\/td>\n<td>\u4e00\u5f35\u8868\u683c\u4e2d\u7684\u5916\u9375\u5177\u6709 UNIQUE \u7d04\u675f<\/td>\n<td>\u4e0d\u5fc5\u8981\u5730\u5728\u5169\u5f35\u8868\u683c\u4e2d\u90fd\u52a0\u5165\u5916\u9375<\/td>\n<\/tr>\n<tr>\n<td>\u4e00\u5c0d\u591a<\/td>\n<td>\u300c\u591a\u300d\u7aef\u8868\u683c\u4e2d\u7684\u5916\u9375<\/td>\n<td>\u5c07\u7236\u8cc7\u6599\u5132\u5b58\u5728\u5b50\u8868\u683c\u4e2d\uff08\u53bb\u6b63\u898f\u5316\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u591a\u5c0d\u591a<\/td>\n<td>\u4e2d\u9593\u95dc\u806f\u8868\u683c<\/td>\n<td>\u5c07\u591a\u500b ID \u5132\u5b58\u5728\u55ae\u4e00\u4ee5\u9017\u865f\u5206\u9694\u7684\u6b04\u4f4d\u4e2d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>3. \u5ffd\u7565\u6b63\u898f\u5316\u6a19\u6e96 \ud83d\udcc9<\/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\u500b\u904e\u7a0b\u3002\u96d6\u7136\u67d0\u4e9b\u73fe\u4ee3\u7cfb\u7d71\u70ba\u4e86\u63d0\u5347\u8b80\u53d6\u6548\u80fd\u800c\u63a5\u53d7\u53bb\u6b63\u898f\u5316\uff0c\u4f46\u5728\u8a2d\u8a08\u968e\u6bb5\u5b8c\u5168\u8df3\u904e\u6b63\u898f\u5316\uff0c\u6703\u9020\u6210\u986f\u8457\u7684\u7dad\u8b77\u8ca0\u64d4\u3002<\/p>\n<h3>\u4e0d\u826f\u6b63\u898f\u5316\u7684\u98a8\u96aa<\/h3>\n<ul>\n<li><strong>\u66f4\u65b0\u7570\u5e38\uff1a<\/strong> \u5982\u679c\u5ba2\u6236\u5730\u5740\u5132\u5b58\u5728\u4e94\u500b\u4e0d\u540c\u7684\u8a02\u55ae\u8868\u683c\u4e2d\uff0c\u66f4\u65b0\u5176\u5730\u5740\u9700\u8981\u9032\u884c\u4e94\u6b21\u7368\u7acb\u7684\u66f4\u65b0\u3002\u82e5\u5176\u4e2d\u4e00\u6b21\u66f4\u65b0\u5931\u6557\uff0c\u8cc7\u6599\u5c31\u6703\u8b8a\u5f97\u4e0d\u4e00\u81f4\u3002<\/li>\n<li><strong>\u63d2\u5165\u7570\u5e38\uff1a<\/strong> \u4f60\u53ef\u80fd\u7121\u6cd5\u5728\u4e0d\u540c\u6642\u65b0\u589e\u7522\u54c1\u8a18\u9304\u7684\u60c5\u6cc1\u4e0b\u52a0\u5165\u65b0\u7684\u7522\u54c1\u985e\u5225\uff0c\u9019\u8feb\u4f7f\u4f60\u5fc5\u9808\u5efa\u7acb\u865b\u5047\u8cc7\u6599\u3002<\/li>\n<li><strong>\u522a\u9664\u7570\u5e38\uff1a<\/strong> \u522a\u9664\u4e00\u7b46\u8a18\u9304\u53ef\u80fd\u6703\u610f\u5916\u5730\u79fb\u9664\u8207\u5176\u4ed6\u5be6\u9ad4\u76f8\u95dc\u7684\u95dc\u9375\u8cc7\u6599\u3002<\/li>\n<\/ul>\n<h3>\u5be6\u65bd\u6307\u5357<\/h3>\n<ul>\n<li>\u4ee5\u7b2c\u4e09\u6b63\u898f\u5316\u5f62\u5f0f\uff083NF\uff09\u70ba\u57fa\u6e96\u3002\u9019\u53ef\u78ba\u4fdd\u6b04\u4f4d\u50c5\u4f9d\u8cf4\u65bc\u4e3b\u9375\u3002<\/li>\n<li>\u8b58\u5225\u50b3\u905e\u4f9d\u8cf4\u95dc\u4fc2\uff0c\u5373\u975e\u9375\u6b04\u4f4d\u4f9d\u8cf4\u65bc\u53e6\u4e00\u500b\u975e\u9375\u6b04\u4f4d\u3002<\/li>\n<li>\u5206\u96e2\u4e0d\u540c\u7684\u5be6\u9ad4\u3002\u5982\u679c\u4e00\u500b\u8868\u683c\u540c\u6642\u5305\u542b\u300c\u8a02\u55ae\u300d\u548c\u300c\u5ba2\u6236\u300d\u7684\u8cc7\u8a0a\uff0c\u61c9\u5c07\u5176\u62c6\u5206\u3002<\/li>\n<li>\u50c5\u5728\u5206\u6790\u67e5\u8a62\u6548\u80fd\u5f8c\u518d\u9032\u884c\u53bb\u6b63\u898f\u5316\u3002\u4e0d\u8981\u70ba\u4e86\u901f\u5ea6\u800c\u63d0\u524d\u512a\u5316\uff0c\u4ee5\u72a7\u7272\u5b8c\u6574\u6027\u70ba\u4ee3\u50f9\u3002<\/li>\n<\/ul>\n<h2>4. \u5efa\u7acb\u5faa\u74b0\u4f9d\u8cf4 \ud83d\udd01<\/h2>\n<p>\u7576\u8868\u683c\u5f7c\u6b64\u4e4b\u9593\u5f62\u6210\u8ff4\u5708\u5f15\u7528\uff0c\u5c0e\u81f4\u7121\u6cd5\u521d\u59cb\u5316\u6216\u5728\u67e5\u8a62\u4e2d\u9020\u6210\u7121\u9650\u905e\u8ff4\u6642\uff0c\u5c31\u6703\u767c\u751f\u5faa\u74b0\u4f9d\u8cf4\u3002\u96d6\u7136\u905e\u8ff4\u95dc\u4fc2\uff08\u4f8b\u5982\u7d44\u7e54\u67b6\u69cb\u5716\u4e2d\u54e1\u5de5\u6709\u7d93\u7406\uff09\u662f\u5408\u7406\u7684\uff0c\u4f46\u4e0d\u53d7\u63a7\u5236\u7684\u5faa\u74b0\u5916\u9375\u53ef\u80fd\u6703\u5c0e\u81f4\u8cc7\u6599\u5eab\u640d\u58de\u3002<\/p>\n<h3>\u70ba\u4f55\u9019\u6703\u5c0e\u81f4\u7cfb\u7d71\u5d29\u6f70<\/h3>\n<ul>\n<li><strong>\u521d\u59cb\u5316\u932f\u8aa4\uff1a<\/strong> \u5728\u90e8\u7f72\u671f\u9593\uff0c\u5982\u679c\u5b58\u5728\u5faa\u74b0\u5f15\u7528\uff08\u4f8b\u5982\uff0c\u8868 A \u5f15\u7528 B\uff0c\u800c B \u53c8\u5f15\u7528 A\uff09\uff0c\u8cc7\u6599\u5eab\u5f15\u64ce\u53ef\u80fd\u6703\u62d2\u7d55\u5efa\u7acb\u5916\u9375\u7d04\u675f\uff0c\u9664\u975e\u4f7f\u7528\u5ef6\u9072\u7d04\u675f\u4f86\u8655\u7406\u3002<\/li>\n<li><strong>\u67e5\u8a62\u5806\u758a\u6ea2\u51fa\uff1a<\/strong> \u672a\u8a2d\u7f6e\u505c\u6b62\u689d\u4ef6\u800c\u904d\u6b77\u9019\u4e9b\u5faa\u74b0\u7684\u905e\u6b78\u67e5\u8a62\u53ef\u80fd\u6703\u6d88\u8017\u6240\u6709\u53ef\u7528\u8a18\u61b6\u9ad4\u3002<\/li>\n<li><strong>\u53c3\u8003\u5b8c\u6574\u6027\u9055\u898f\uff1a<\/strong> \u5982\u679c\u5b50\u8868\u5c1a\u672a\u6e05\u9664\uff0c\u522a\u9664\u7236\u8868\u53ef\u80fd\u6703\u5931\u6557\uff1b\u4f46\u6e05\u9664\u5b50\u8868\u4e5f\u53ef\u80fd\u56e0\u5176\u4ed6\u4f9d\u8cf4\u95dc\u4fc2\u800c\u5931\u6557\u3002<\/li>\n<\/ul>\n<h3>\u5982\u4f55\u89e3\u6c7a<\/h3>\n<ul>\n<li>\u4f7f\u7528<strong>\u5ef6\u9072\u7d04\u675f<\/strong> \u5982\u679c\u4f60\u7684\u8cc7\u6599\u5eab\u652f\u63f4\u6b64\u529f\u80fd\uff0c\u53ef\u8b93\u8cc7\u6599\u5eab\u5728\u6240\u6709\u8cc7\u6599\u8f09\u5165\u5f8c\u518d\u6aa2\u67e5\u95dc\u4fc2\u3002<\/li>\n<li>\u5c0d\u65bc\u81ea\u6211\u5f15\u7528\u7684\u8868\u683c\uff08\u4f8b\u5982\u5206\u985e\uff09\uff0c\u8acb\u78ba\u4fdd\u5916\u9375\u5141\u8a31\u70ba\u7a7a\uff0c\u4ee5\u5141\u8a31\u6839\u7bc0\u9ede\u7684\u5b58\u5728\u3002<\/li>\n<li>\u8a2d\u8a08\u8cc7\u6599\u7d50\u69cb\u6642\uff0c\u61c9\u5141\u8a31\u908f\u8f2f\u5c64\u6b21\u7d50\u69cb\uff0c\u800c\u4e0d\u5fc5\u5728\u6bcf\u4e00\u5c64\u5f37\u5236\u5efa\u7acb\u7269\u7406\u4e0a\u7684\u5916\u9375\u5faa\u74b0\u3002<\/li>\n<li>\u5be6\u4f5c\u8edf\u522a\u9664\u4ee5\u5b89\u5168\u5730\u7ba1\u7406\u522a\u9664\u7d1a\u806f\u3002<\/li>\n<\/ul>\n<h2>5. \u4e0d\u4e00\u81f4\u7684\u547d\u540d\u6163\u4f8b \ud83d\udcdd<\/h2>\n<p>\u540d\u7a31\u662f\u4eba\u985e\u8207\u6a5f\u5668\u4e4b\u9593\u7684\u4ecb\u9762\u3002\u8868\u683c\u548c\u6b04\u4f4d\u540d\u7a31\u4e2d\u4e0d\u4e00\u81f4\u7684\u547d\u540d\u6703\u8b93\u8cc7\u6599\u7d50\u69cb\u96e3\u4ee5\u7406\u89e3\u3001\u7dad\u8b77\u548c\u67e5\u8a62\u3002\u9019\u901a\u5e38\u6e90\u65bc\u7f3a\u4e4f\u5171\u4eab\u7684\u547d\u540d\u98a8\u683c\u6307\u5357\u3002<\/p>\n<h3>\u5177\u9ad4\u554f\u984c<\/h3>\n<ul>\n<li><strong>\u6df7\u5408\u5927\u5c0f\u5beb\uff1a<\/strong>\u6df7\u5408\u4f7f\u7528<code>camelCase<\/code>, <code>snake_case<\/code>\u3001\u4ee5\u53ca<code>PascalCase<\/code> \u6703\u8b93\u67e5\u8a62\u8cc7\u6599\u7684\u958b\u767c\u4eba\u54e1\u611f\u5230\u56f0\u60d1\u3002<\/li>\n<li><strong>\u4fdd\u7559\u95dc\u9375\u5b57\uff1a<\/strong> \u4f7f\u7528\u50cf<code>order<\/code>, <code>group<\/code>\u3001\u6216<code>user<\/code> \u82e5\u672a\u9032\u884c\u8f49\u7fa9\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4 SQL \u67e5\u8a62\u4e2d\u7684\u8a9e\u6cd5\u932f\u8aa4\u3002<\/li>\n<li><strong>\u7e2e\u5beb\uff1a<\/strong> \u4f7f\u7528 <code>usr_id<\/code> \u5c0d\u6bd4 <code>user_id<\/code> \u5c0d\u6bd4 <code>uid<\/code> \u5728\u4e0d\u540c\u8cc7\u6599\u8868\u4e2d\u6703\u964d\u4f4e\u6e05\u6670\u5ea6\u3002<\/li>\n<li><strong>\u5197\u9577\u8207\u7c21\u6f54\u4e4b\u9593\u7684\u6b0a\u8861\uff1a<\/strong> \u67d0\u4e9b\u6b04\u4f4d\u904e\u65bc\u5197\u9577\uff0c\u800c\u5176\u4ed6\u6b04\u4f4d\u5247\u662f\u96e3\u4ee5\u7406\u89e3\u7684\u7e2e\u5beb\u3002<\/li>\n<\/ul>\n<h3>\u5efa\u7acb\u6a19\u6e96<\/h3>\n<ul>\n<li>\u63a1\u7528\u4e00\u81f4\u7684\u5927\u5c0f\u5beb\u7b56\u7565\uff08\u4f8b\u5982\uff0c<code>snake_case<\/code> \u7528\u65bc SQL \u8cc7\u6599\u8868\u88ab\u5ee3\u6cdb\u63a8\u85a6\uff09\u3002<\/li>\n<li>\u4f7f\u7528\u80fd\u53cd\u6620\u696d\u52d9\u610f\u7fa9\u7684\u63cf\u8ff0\u6027\u540d\u7a31\uff0c\u800c\u975e\u5167\u90e8\u5be6\u4f5c\u7d30\u7bc0\u3002<\/li>\n<li>\u5b8c\u5168\u907f\u514d\u4f7f\u7528\u4fdd\u7559\u95dc\u9375\u5b57\u3002\u82e5\u7121\u6cd5\u907f\u514d\uff0c\u8acb\u4f7f\u7528\u8cc7\u6599\u5eab\u5f15\u64ce\u7279\u5b9a\u7684\u5f15\u865f\u6216\u62ec\u865f\u5305\u8986\u3002<\/li>\n<li>\u7d71\u4e00\u8cc7\u6599\u8868\u540d\u7a31\u7684\u55ae\u8907\u6578\u5f62\u5f0f\u3002\u9078\u64c7\u4e00\u7a2e\u4e26\u5805\u6301\u4f7f\u7528\uff08\u4f8b\u5982\uff0c<code>users<\/code> \u5c0d\u6bd4 <code>user<\/code>).<\/li>\n<li>\u4ee5\u5916\u9375\u6b04\u4f4d\u524d\u7db4\u52a0\u4e0a\u6240\u53c3\u8003\u7684\u8cc7\u6599\u8868\u540d\u7a31\uff08\u4f8b\u5982\uff0c<code>user_id<\/code>\uff09\u4ee5\u4f7f\u95dc\u806f\u95dc\u4fc2\u4e00\u76ee\u4e86\u7136\u3002<\/li>\n<\/ul>\n<h2>6. \u5728\u7d50\u69cb\u4e2d\u786c\u7de8\u78bc\u503c \ud83d\uded1<\/h2>\n<p>\u8a2d\u8a08\u5e2b\u6709\u6642\u6703\u5c07\u7279\u5b9a\u7684\u696d\u52d9\u503c\u76f4\u63a5\u5d4c\u5165\u8cc7\u6599\u5eab\u7d50\u69cb\u4e2d\uff0c\u4f8b\u5982\u4f7f\u7528\u6b04\u4f4d\u5132\u5b58\u7279\u5b9a\u7684\u72c0\u614b\u4ee3\u78bc\uff0c\u5982<code>active<\/code> \u6216 <code>inactive<\/code> \u800c\u4e0d\u662f\u4f7f\u7528\u901a\u7528\u7684\u72c0\u614b\u6b04\u4f4d\uff0c\u6216\u786c\u7de8\u78bc\u8ca8\u5e63\u985e\u578b\u3002<\/p>\n<h3>\u5c0d\u5f48\u6027\u7684\u5f71\u97ff<\/h3>\n<ul>\n<li><strong>\u7d50\u69cb\u8b8a\u66f4\uff1a<\/strong> \u5982\u679c\u9700\u8981\u65b0\u589e\u72c0\u614b\uff0c\u53ef\u80fd\u5fc5\u9808\u8b8a\u66f4\u8868\u683c\u7d50\u69cb\u6216\u65b0\u589e\u6b04\u4f4d\uff0c\u9032\u800c\u5f15\u767c\u90e8\u7f72\u505c\u6a5f\u3002<\/li>\n<li><strong>\u8cc7\u6599\u9a57\u8b49\uff1a<\/strong> \u61c9\u7528\u7a0b\u5f0f\u7a0b\u5f0f\u78bc\u901a\u5e38\u6703\u9a57\u8b49\u9019\u4e9b\u503c\uff0c\u4f46\u8cc7\u6599\u5eab\u7d50\u69cb\u61c9\u900f\u904e\u9650\u5236\u689d\u4ef6\u5f37\u5236\u57f7\u884c\u6709\u6548\u7684\u7bc4\u570d\u6216\u96c6\u5408\u3002<\/li>\n<li><strong>\u672c\u5730\u5316\u554f\u984c\uff1a<\/strong> \u786c\u7de8\u78bc\u6587\u5b57\u503c\uff0c\u4f8b\u5982<code>USD<\/code> \u6216 <code>English<\/code> \u6703\u8b93\u5168\u7403\u64f4\u5c55\u8b8a\u5f97\u56f0\u96e3\u3002<\/li>\n<\/ul>\n<h3>\u70ba\u53ef\u64f4\u5c55\u6027\u9032\u884c\u91cd\u69cb<\/h3>\n<ul>\n<li>\u4f7f\u7528<strong>\u67e5\u95b1\u8868<\/strong> \u7528\u65bc\u4efb\u4f55\u53ef\u80fd\u8b8a\u66f4\u6216\u589e\u9577\u7684\u503c\u96c6\u5408\uff08\u4f8b\u5982\uff1a\u72c0\u614b\u3001\u8ca8\u5e63\u3001\u570b\u5bb6\uff09\u3002<\/li>\n<li>\u5be6\u4f5c<strong>\u6aa2\u67e5\u7d04\u675f<\/strong> \u4ee5\u78ba\u4fdd\u50c5\u8f38\u5165\u6709\u6548\u503c\uff0c\u4f46\u5c07\u9019\u4e9b\u503c\u7684\u5b9a\u7fa9\u4fdd\u7559\u5728\u61c9\u7528\u7a0b\u5f0f\u6216\u7368\u7acb\u7684\u8a2d\u5b9a\u8868\u683c\u4e2d\u3002<\/li>\n<li>\u50c5\u5728\u8cc7\u6599\u5eab\u7cfb\u7d71\u7a69\u5065\u652f\u63f4\u5217\u8209\u985e\u578b\uff0c\u4e14\u96c6\u5408\u78ba\u5be6\u56fa\u5b9a\u6642\u624d\u4f7f\u7528\u3002<\/li>\n<li>\u5c07\u8a2d\u5b9a\u8cc7\u6599\u8207\u4ea4\u6613\u8cc7\u6599\u5206\u96e2\u3002<\/li>\n<\/ul>\n<h2>7. \u5ffd\u7565\u672a\u4f86\u7684\u53ef\u64f4\u5c55\u6027 \ud83d\udcc8<\/h2>\n<p>\u8a31\u591aERD\u662f\u91dd\u5c0d\u76ee\u524d\u7684\u8cc7\u6599\u96c6\u5927\u5c0f\u8a2d\u8a08\uff0c\u537b\u672a\u8003\u616e\u6210\u9577\u56e0\u7d20\u3002\u4e00\u500b\u57281,000\u7b46\u8a18\u9304\u4e0b\u904b\u4f5c\u826f\u597d\u7684\u7d50\u69cb\uff0c\u53ef\u80fd\u56e0\u9396\u5b9a\u3001\u7d22\u5f15\u6216\u5206\u5272\u554f\u984c\uff0c\u57281,000\u842c\u7b46\u8a18\u9304\u6642\u6158\u6557\u3002<\/p>\n<h3>\u53ef\u64f4\u5c55\u6027\u9677\u9631<\/h3>\n<ul>\n<li><strong>\u5927\u578b\u6587\u5b57\u6b04\u4f4d\uff1a<\/strong> \u5728\u4e3b\u8868\u683c\u4e2d\u5132\u5b58\u5927\u91cf\u4e8c\u9032\u4f4d\u5927\u7269\u4ef6\u6216\u9577\u6587\u5b57\u5b57\u4e32\uff0c\u53ef\u80fd\u5c0e\u81f4\u7d22\u5f15\u81a8\u8139\u4e26\u6e1b\u6162\u8b80\u53d6\u901f\u5ea6\u3002<\/li>\n<li><strong>\u7f3a\u4e4f\u5206\u5272\u9375\uff1a<\/strong> \u5982\u679c\u7d50\u69cb\u672a\u8003\u616e\u8cc7\u6599\u5c07\u5982\u4f55\u5206\u7247\u6216\u5206\u5272\uff08\u4f8b\u5982\u6309\u65e5\u671f\u6216\u5730\u5340\uff09\uff0c\u672a\u4f86\u7684\u6c34\u5e73\u64f4\u5c55\u5c07\u8b8a\u6210\u91cd\u5927\u91cd\u69cb\u3002<\/li>\n<li><strong>\u7f3a\u5c11\u7d22\u5f15\uff1a<\/strong> \u672a\u80fd\u9810\u898b\u672a\u4f86\u54ea\u4e9b\u6b04\u4f4d\u5c07\u7528\u65bc\u904e\u6ffe\u6216\u6392\u5e8f\uff0c\u5c07\u5c0e\u81f4\u6548\u80fd\u74f6\u9838\u3002<\/li>\n<li><strong>\u5beb\u5165\u5bc6\u96c6\u578b\u6a21\u5f0f\uff1a<\/strong> \u4e00\u500b\u91dd\u5c0d\u8b80\u53d6\u512a\u5316\u7684\u8a2d\u8a08\u53ef\u80fd\u56e0\u5916\u9375\u4e0a\u7684\u9396\u5b9a\u6a5f\u5236\u800c\u5728\u9ad8\u983b\u7387\u5beb\u5165\u6642\u51fa\u73fe\u74f6\u9838\u3002<\/li>\n<\/ul>\n<h3>\u70ba\u6210\u9577\u800c\u8a2d\u8a08<\/h3>\n<ul>\n<li>\u6aa2\u8996 <strong>\u8b80\u5beb\u6bd4\u4f8b<\/strong> \u60a8\u61c9\u7528\u7a0b\u5f0f\u7684\u8b80\u5beb\u6bd4\u4f8b\u3002\u82e5\u662f\u5beb\u5165\u5bc6\u96c6\u578b\uff0c\u61c9\u76e1\u91cf\u6e1b\u5c11\u6703\u5c0e\u81f4\u9396\u5b9a\u7684\u5916\u9375\u7d04\u675f\u3002<\/li>\n<li>\u8a2d\u8a08 <strong>\u5206\u5272\u9375<\/strong> \u7d0d\u5165\u60a8\u7684\u4e3b\u8981\u8cc7\u6599\u7d50\u69cb\u4e2d\u3002\u78ba\u4fdd\u6bcf\u500b\u8cc7\u6599\u8868\u90fd\u6709\u4e00\u500b\u53ef\u7528\u65bc\u908f\u8f2f\u5206\u5272\u8cc7\u6599\u7684\u6b04\u4f4d\u3002<\/li>\n<li> \u5c07\u5927\u91cf\u6587\u5b57\u8cc7\u6599\u5206\u96e2\u81f3\u7368\u7acb\u7684\u8cc7\u6599\u8868\uff08\u4e00\u5c0d\u4e00\u95dc\u4fc2\uff09\uff0c\u4ee5\u4fdd\u6301\u4e3b\u8981\u7d22\u5f15\u7684\u8f15\u91cf\u5316\u3002<\/li>\n<li>\u898f\u5283 <strong>\u8edf\u522a\u9664<\/strong> \u800c\u975e\u786c\u522a\u9664\uff0c\u4ee5\u4fdd\u7559\u8cc7\u6599\u6b77\u53f2\uff0c\u540c\u6642\u4e0d\u5f71\u97ff\u7576\u524d\u67e5\u8a62\u6548\u80fd\u3002<\/li>\n<\/ul>\n<h2>\u6700\u4f73\u5be6\u52d9\u7e3d\u7d50 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