{"id":1656,"date":"2026-04-07T22:58:20","date_gmt":"2026-04-07T22:58:20","guid":{"rendered":"https:\/\/www.viz-note.com\/cn\/common-erd-mistakes-data-integrity-violations\/"},"modified":"2026-04-07T22:58:20","modified_gmt":"2026-04-07T22:58:20","slug":"common-erd-mistakes-data-integrity-violations","status":"publish","type":"post","link":"https:\/\/www.viz-note.com\/cn\/common-erd-mistakes-data-integrity-violations\/","title":{"rendered":"\u5bfc\u81f4\u6570\u636e\u5b8c\u6574\u6027\u8fdd\u89c4\u7684\u5b9e\u4f53\u5173\u7cfb\u56fe\u5efa\u6a21\u5e38\u89c1\u9519\u8bef"},"content":{"rendered":"<p>\u8bbe\u8ba1\u4e00\u4e2a\u5065\u58ee\u7684\u6570\u636e\u5e93\u7ed3\u6784\u59cb\u4e8e\u7cbe\u786e\u7684\u8ba1\u5212\u3002\u5b9e\u4f53\u5173\u7cfb\u56fe\uff08ERD\uff09\u662f\u6570\u636e\u5c06\u5982\u4f55\u5b58\u50a8\u3001\u5173\u8054\u548c\u8bbf\u95ee\u7684\u84dd\u56fe\u3002\u7136\u800c\uff0c\u5373\u4f7f\u662f\u7ecf\u9a8c\u4e30\u5bcc\u7684\u67b6\u6784\u5e08\u5728\u5efa\u6a21\u9636\u6bb5\u4e5f\u53ef\u80fd\u5f15\u5165\u7ec6\u5fae\u7684\u9519\u8bef\u3002\u8fd9\u4e9b\u9519\u8bef\u901a\u5e38\u5728\u540e\u671f\u8868\u73b0\u4e3a\u5173\u952e\u7684\u6570\u636e\u5b8c\u6574\u6027\u8fdd\u89c4\u3002\u5f53\u6570\u636e\u5b8c\u6574\u6027\u5931\u6548\u65f6\uff0c\u6574\u4e2a\u5e94\u7528\u7a0b\u5e8f\u7684\u53ef\u9760\u6027\u5c06\u53d7\u5230\u5a01\u80c1\u3002 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Entity Relationship Diagram modeling mistakes that cause data integrity violations, including ambiguous cardinality, missing foreign keys, poor normalization, incorrect data types, circular references, weak primary keys, and inconsistent naming conventions, with solutions and best practices for robust database design\" decoding=\"async\" src=\"https:\/\/www.viz-note.com\/wp-content\/uploads\/2026\/04\/erd-modeling-mistakes-data-integrity-infographic-line-art.jpg\"\/><\/figure>\n<\/div>\n<h2>\u7406\u89e3\u6570\u636e\u5e93\u8bbe\u8ba1\u4e2d\u7684\u6570\u636e\u5b8c\u6574\u6027 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<em>\u7ecf\u7406<\/em>\uff0c\u800c\u8be5\u7ecf\u7406\u672c\u8eab\u4e5f\u662f\u4e00\u540d\u5458\u5de5\u3002\u5efa\u6a21\u9519\u8bef\u53ef\u80fd\u5bfc\u81f4\u65e0\u9650\u5faa\u73af\u6216\u6570\u636e\u4e0d\u4e00\u81f4\u3002<\/p>\n<h3>\u95ee\u9898<\/h3>\n<p>\u8bbe\u8ba1\u5e08\u6709\u65f6\u4f1a\u521b\u5efa\u5916\u952e\u4f46\u672a\u5b9a\u4e49\u5c42\u7ea7\u9650\u5236\u3002\u5982\u679c\u672a\u5904\u7406\u9012\u5f52\uff0c\u67e5\u8be2\u53ef\u80fd\u4f1a\u65e0\u9650\u8fdb\u884c\u3002\u6b64\u5916\uff0c\u5982\u679c\u81ea\u5f15\u7528\u5141\u8bb8\u5f62\u6210\u5faa\u73af\uff08\u4f8b\u5982\uff0cA\u7ba1\u7406B\uff0cB\u7ba1\u7406C\uff0cC\u7ba1\u7406A\uff09\uff0c\u5219\u5173\u4e8e\u5c42\u7ea7\u7684\u6570\u636e\u5b8c\u6574\u6027\u5c06\u4e22\u5931\u3002<\/p>\n<h3>\u540e\u679c<\/h3>\n<ul>\n<li><strong>\u67e5\u8be2\u8d85\u65f6\uff1a<\/strong> 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\ud83d\udd11<\/h2>\n<p>\u4e3b\u952e\u662f\u8bb0\u5f55\u7684\u552f\u4e00\u6807\u8bc6\u7b26\u3002\u5b83\u662f\u5b9e\u4f53\u5b8c\u6574\u6027\u7684\u57fa\u7840\u3002\u5982\u679c\u4e3b\u952e\u672a\u5f3a\u5236\u4e3a\u552f\u4e00\uff0c\u5c31\u53ef\u80fd\u5b58\u5728\u91cd\u590d\u8bb0\u5f55\u3002<\/p>\n<h3>\u95ee\u9898<\/h3>\n<p>\u4e00\u4e9b\u6a21\u578b\u5efa\u8bae\u4f7f\u7528\u4ee3\u7406\u952e\uff08\u5982\u81ea\u589eID\uff09\uff0c\u4f46\u5728\u56fe\u8868\u4e2d\u672a\u5c06\u5176\u6807\u8bb0\u4e3a\u4e3b\u952e\u3002\u6216\u8005\uff0c\u4f7f\u7528\u81ea\u7136\u952e\uff08\u5982\u793e\u4f1a\u4fdd\u969c\u53f7\u7801\uff09\u4f46\u672a\u8bbe\u7f6e\u552f\u4e00\u6027\u7ea6\u675f\u3002\u8fd9\u4f1a\u5bfc\u81f4\u6570\u636e\u5e93\u63a5\u53d7\u540c\u4e00\u903b\u8f91\u5b9e\u4f53\u7684\u91cd\u590d\u6761\u76ee\u3002<\/p>\n<h3>\u540e\u679c<\/h3>\n<ul>\n<li><strong>\u91cd\u590d\u6570\u636e\uff1a<\/strong> \u540c\u4e00\u5ba2\u6237\u6216\u4ea7\u54c1\u591a\u6b21\u51fa\u73b0\u3002<\/li>\n<li><strong>\u66f4\u65b0\u6df7\u6dc6\uff1a<\/strong> \u66f4\u65b0\u53ef\u80fd\u53ea\u5e94\u7528\u4e8e\u5176\u4e2d\u4e00\u4e2a\u91cd\u590d\u8bb0\u5f55\u3002<\/li>\n<li><strong>\u8fde\u63a5\u6a21\u7cca\u6027\uff1a<\/strong> \u5728\u952e\u4e0a\u8fdb\u884c\u8fde\u63a5\u7684\u67e5\u8be2\u53ef\u80fd\u4f1a\u610f\u5916\u8fd4\u56de\u591a\u884c\u7ed3\u679c\u3002<\/li>\n<\/ul>\n<h3>\u89e3\u51b3\u65b9\u6848<\/h3>\n<p>\u5728ERD\u4e2d\u59cb\u7ec8\u660e\u786e\u6807\u8bc6\u4e3b\u952e\u3002\u4f7f\u7528\u94a5\u5319\u56fe\u6807\u6216\u7279\u5b9a\u7b26\u53f7\u8fdb\u884c\u6807\u8bb0\u3002\u786e\u4fdd\u8be5\u5217\u88ab\u5b9a\u4e49\u4e3aNOT NULL\u3002\u5982\u679c\u4f7f\u7528\u81ea\u7136\u952e\uff0c\u8bf7\u6dfb\u52a0\u552f\u4e00\u7ea6\u675f\u4ee5\u9632\u6b62\u91cd\u590d\u3002\u5bf9\u4e8e\u4ee3\u7406\u952e\uff0c\u786e\u4fdd\u751f\u6210\u673a\u5236\u53ef\u9760\u4e14\u65e0\u51b2\u7a81\u3002\ud83d\udd12<\/p>\n<h2>\u9519\u8bef7\uff1a\u547d\u540d\u7ea6\u5b9a\u4e0d\u4e00\u81f4 \ud83c\udff7\ufe0f<\/h2>\n<p>\u867d\u7136\u8fd9\u770b\u4f3c\u53ea\u662f\u5916\u89c2\u95ee\u9898\uff0c\u4f46\u547d\u540d\u7ea6\u5b9a\u4f1a\u76f4\u63a5\u5f71\u54cd\u6570\u636e\u5b8c\u6574\u6027\u3002\u547d\u540d\u4e0d\u4e00\u81f4\u4f1a\u5bfc\u81f4\u6df7\u6dc6\uff0c\u5e76\u5f15\u53d1\u91cd\u590d\u5b9e\u4f53\u7684\u521b\u5efa\u3002<\/p>\n<h3>\u95ee\u9898\u6240\u5728<\/h3>\n<p>\u4e00\u4e2a\u8868\u53ef\u80fd\u4f7f\u7528<code>user_id<\/code>\uff0c\u800c\u53e6\u4e00\u4e2a\u8868\u4f7f\u7528<code>UserID<\/code> \u6216 <code>userIdentifier<\/code>\u3002\u5f53\u5f00\u53d1\u4eba\u5458\u6784\u5efa\u67e5\u8be2\u65f6\uff0c\u4ed6\u4eec\u53ef\u80fd\u4f1a\u6df7\u6dc6\u8fd9\u4e9b\u540d\u79f0\u3002\u4ed6\u4eec\u53ef\u80fd\u4f1a\u9519\u8bef\u5730\u8fde\u63a5\u5230\u5217\uff0c\u6216\u521b\u5efa\u65b0\u7684\u5217\u6765\u590d\u5236\u73b0\u6709\u6570\u636e\uff0c\u56e0\u4e3a\u4ed6\u4eec\u6ca1\u6709\u8bc6\u522b\u51fa\u8fd9\u4e9b\u540d\u79f0\u662f\u540c\u4e49\u8bcd\u3002<\/p>\n<h3>\u540e\u679c<\/h3>\n<ul>\n<li><strong>\u96c6\u6210\u5931\u8d25\uff1a<\/strong>\u4e0d\u540c\u6a21\u5757\u7684\u6570\u636e\u65e0\u6cd5\u6b63\u786e\u8fde\u63a5\u3002<\/li>\n<li><strong>\u7ef4\u62a4\u8d1f\u62c5\uff1a<\/strong>\u5f00\u53d1\u4eba\u5458\u9700\u8981\u82b1\u8d39\u65f6\u95f4\u6765\u7406\u89e3\u6bcf\u4e00\u5217\u7684\u542b\u4e49\u3002<\/li>\n<li><strong>\u6a21\u5f0f\u6f02\u79fb\uff1a<\/strong>\u968f\u7740\u65f6\u95f4\u63a8\u79fb\uff0c\u6570\u636e\u5e93\u7ed3\u6784\u53d8\u5f97\u652f\u79bb\u7834\u788e\u4e14\u4e0d\u4e00\u81f4\u3002<\/li>\n<\/ul>\n<h3>\u89e3\u51b3\u65b9\u6848<\/h3>\n<p>\u5efa\u7acb\u4e25\u683c\u7684\u547d\u540d\u6807\u51c6\u3002\u5217\u540d\u4f7f\u7528\u5c0f\u5199\u5b57\u6bcd\u52a0\u4e0b\u5212\u7ebf\u3002\u8868\u540d\u4f7f\u7528\u590d\u6570\u540d\u8bcd\uff08\u4f8b\u5982\uff0c<code>orders<\/code>\uff0c\u800c\u4e0d\u662f<code>order<\/code>\uff09\u3002\u786e\u4fdd\u76f8\u5173\u5b9e\u4f53\u4f7f\u7528\u76f8\u540c\u7684\u5916\u952e\u540d\u79f0\u3002\u5728\u6570\u636e\u5b57\u5178\u4e2d\u8bb0\u5f55\u8fd9\u4e9b\u7ea6\u5b9a\u3002\u8fd9\u79cd\u4e00\u81f4\u6027\u53ef\u4ee5\u51cf\u8f7b\u5f00\u53d1\u4eba\u5458\u7684\u8ba4\u77e5\u8d1f\u62c5\uff0c\u5e76\u51cf\u5c11\u9519\u8bef\u3002\ud83d\udcd6<\/p>\n<h2>\u5e38\u89c1\u5efa\u6a21\u9519\u8bef\u6c47\u603b<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u9519\u8bef\u7c7b\u522b<\/th>\n<th>\u4e3b\u8981\u98ce\u9669<\/th>\n<th>\u63a8\u8350\u89e3\u51b3\u65b9\u6848<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6a21\u7cca\u7684\u57fa\u6570<\/td>\n<td>\u5197\u4f59\u6216\u6570\u636e\u9650\u5236<\/td>\n<td>\u660e\u786e\u5b9a\u4e49 1:1\u30011:N\u3001M:N \u5173\u7cfb<\/td>\n<\/tr>\n<tr>\n<td>\u7f3a\u5931\u5916\u952e<\/td>\n<td>\u5b64\u7acb\u8bb0\u5f55<\/td>\n<td>\u5f3a\u5236\u5b9e\u65bd\u53c2\u7167\u5b8c\u6574\u6027\u7ea6\u675f<\/td>\n<\/tr>\n<tr>\n<td>\u89c4\u8303\u5316\u7a0b\u5ea6\u5dee<\/td>\n<td>\u66f4\u65b0\/\u63d2\u5165\u5f02\u5e38<\/td>\n<td>\u5e94\u7528 1NF\u30012NF\u30013NF \u89c4\u5219<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u7c7b\u578b\u9519\u8bef<\/td>\n<td>\u8ba1\u7b97\u4e0e\u9a8c\u8bc1\u9519\u8bef<\/td>\n<td>\u660e\u786e\u6307\u5b9a\u7cbe\u786e\u7684\u57df\u548c\u7c7b\u578b<\/td>\n<\/tr>\n<tr>\n<td>\u9012\u5f52\u5faa\u73af<\/td>\n<td>\u67e5\u8be2\u8d85\u65f6<\/td>\n<td>\u9650\u5236\u5c42\u6b21\u6df1\u5ea6\u5e76\u68c0\u67e5\u5faa\u73af<\/td>\n<\/tr>\n<tr>\n<td>\u5f31\u4e3b\u952e<\/td>\n<td>\u91cd\u590d\u8bb0\u5f55<\/td>\n<td>\u5f3a\u5236\u552f\u4e00\u6027 + \u975e\u7a7a<\/td>\n<\/tr>\n<tr>\n<td>\u547d\u540d\u4e0d\u4e00\u81f4<\/td>\n<td>\u96c6\u6210\u5931\u8d25<\/td>\n<td>\u91c7\u7528\u4e25\u683c\u7684\u547d\u540d\u6807\u51c6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u7a33\u5065ERD\u8bbe\u8ba1\u7b56\u7565 \ud83d\udee0\ufe0f<\/h2>\n<p>\u9632\u6b62\u8fd9\u4e9b\u9519\u8bef\u9700\u8981\u4e25\u8c28\u7684\u65b9\u6cd5\u3002\u4ec5\u4ec5\u753b\u51fa\u7ebf\u6761\u662f\u4e0d\u591f\u7684\uff1b\u4f60\u5fc5\u987b\u9a8c\u8bc1\u903b\u8f91\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u7b56\u7565\uff0c\u4ee5\u786e\u4fdd\u4f60\u7684\u6a21\u578b\u5728\u5ba1\u67e5\u4e0b\u4f9d\u7136\u7a33\u56fa\u3002<\/p>\n<ul>\n<li><strong>\u540c\u884c\u8bc4\u5ba1\uff1a<\/strong>\u8bf7\u53e6\u4e00\u4f4d\u67b6\u6784\u5e08\u5ba1\u67e5\u8be5\u56fe\u3002\u65b0\u9c9c\u7684\u89c6\u89d2\u901a\u5e38\u80fd\u53d1\u73b0\u521b\u5efa\u8005\u5ffd\u7565\u7684\u903b\u8f91\u6f0f\u6d1e\u3002<\/li>\n<li><strong>\u6a21\u62df\u6570\u636e\u6d4b\u8bd5\uff1a<\/strong>\u5728\u5b9e\u65bd\u4e4b\u524d\uff0c\u4f7f\u7528\u793a\u4f8b\u6570\u636e\u586b\u5145\u6d4b\u8bd5\u6570\u636e\u5e93\u3002\u5c1d\u8bd5\u8fdd\u53cd\u4f60\u8bbe\u8ba1\u7684\u89c4\u5219\u3002\u770b\u770b\u7cfb\u7edf\u662f\u5426\u4f1a\u963b\u6b62\u4f60\u3002<\/li>\n<li><strong>\u6587\u6863\uff1a<\/strong>\u5728ERD\u65c1\u8fb9\u7f16\u5199\u6570\u636e\u5b57\u5178\u3002\u89e3\u91ca\u6bcf\u4e2a\u5173\u7cfb\u548c\u7ea6\u675f\u80cc\u540e\u7684\u4e1a\u52a1\u89c4\u5219\u3002<\/li>\n<li><strong>\u8fed\u4ee3\u8bbe\u8ba1\uff1a<\/strong>\u4e0d\u8981\u671f\u671b\u7b2c\u4e00\u7248\u5c31\u5b8c\u7f8e\u65e0\u7f3a\u3002\u968f\u7740\u4e1a\u52a1\u9700\u6c42\u7684\u6f14\u53d8\uff0c\u4e0d\u65ad\u4f18\u5316\u6a21\u578b\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u65bd\u524d\u7684\u9a8c\u8bc1\u6280\u672f \ud83e\uddea<\/h2>\n<p>ERD\u786e\u5b9a\u540e\uff0c\u9a8c\u8bc1\u662f\u4e0b\u4e00\u6b65\u7684\u5173\u952e\u6b65\u9aa4\u3002\u6b64\u8fc7\u7a0b\u786e\u4fdd\u8bbe\u8ba1\u80fd\u6b63\u786e\u8f6c\u6362\u4e3a\u7269\u7406\u6a21\u5f0f\u3002<\/p>\n<ol>\n<li><strong>\u811a\u672c\u751f\u6210\uff1a<\/strong> \u4f7f\u7528\u5de5\u5177\u4ece\u56fe\u8868\u751f\u6210SQL\u811a\u672c\u3002\u68c0\u67e5\u751f\u6210\u7684\u811a\u672c\u662f\u5426\u5b58\u5728\u8bed\u6cd5\u9519\u8bef\u6216\u7f3a\u5931\u7684\u7ea6\u675f\u3002<\/li>\n<li><strong>\u7ea6\u675f\u9a8c\u8bc1\uff1a<\/strong> \u68c0\u67e5\u811a\u672c\u4e2d\u7684\u6bcf\u4e2a\u5916\u952e\u662f\u5426\u90fd\u4e0e\u7236\u8868\u4e2d\u7684\u4e3b\u952e\u5339\u914d\u3002<\/li>\n<li><strong>\u7d22\u5f15\u5206\u6790\uff1a<\/strong> \u786e\u4fdd\u5916\u952e\u548c\u552f\u4e00\u7ea6\u675f\u88ab\u7d22\u5f15\uff0c\u4ee5\u63d0\u5347\u6027\u80fd\u3002<\/li>\n<li><strong>\u8fb9\u7f18\u60c5\u51b5\u5ba1\u67e5\uff1a<\/strong> \u8003\u8651\u7a7a\u503c\u3002\u5728\u4f60\u7684\u8bbe\u8ba1\u4e2d\uff0c\u5fc5\u586b\u5b57\u6bb5\u80fd\u5426\u4e3aNULL\uff1f\u5982\u679c\u4e0d\u80fd\uff0c\u5e94\u660e\u786e\u6807\u8bb0\u4e3aNOT NULL\u3002<\/li>\n<\/ol>\n<p>\u6b64\u9636\u6bb5\u80fd\u591f\u53d1\u73b0\u89c6\u89c9\u56fe\u8868\u4e2d\u672a\u4f53\u73b0\u7684\u5b9e\u65bd\u9519\u8bef\u3002\u5b83\u5f25\u5408\u4e86\u7406\u8bba\u4e0e\u73b0\u5b9e\u4e4b\u95f4\u7684\u5dee\u8ddd\u3002 \ud83d\udd2c<\/p>\n<h2>\u957f\u671f\u7ef4\u62a4\u6a21\u5f0f \ud83d\udd04<\/h2>\n<p>\u6570\u636e\u5e93\u8bbe\u8ba1\u5e76\u975e\u4e00\u6b21\u6027\u4e8b\u4ef6\u3002\u9700\u6c42\u4f1a\u53d8\u5316\uff0c\u6a21\u5f0f\u5fc5\u987b\u6f14\u8fdb\uff0c\u540c\u65f6\u4e0d\u80fd\u7834\u574f\u73b0\u6709\u6570\u636e\u5b8c\u6574\u6027\u3002\u4fee\u6539ERD\u65f6\uff0c\u8bf7\u9075\u5faa\u4ee5\u4e0b\u51c6\u5219\u3002<\/p>\n<ul>\n<li><strong>\u7248\u672c\u63a7\u5236\uff1a<\/strong> 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