{"id":1622,"date":"2026-03-26T01:48:52","date_gmt":"2026-03-26T01:48:52","guid":{"rendered":"https:\/\/www.ez-knowledge.com\/tw\/enforcing-data-integrity-erd-constraints\/"},"modified":"2026-03-26T01:48:52","modified_gmt":"2026-03-26T01:48:52","slug":"enforcing-data-integrity-erd-constraints","status":"publish","type":"post","link":"https:\/\/www.ez-knowledge.com\/tw\/enforcing-data-integrity-erd-constraints\/","title":{"rendered":"\u900f\u904e\u56b4\u683c\u7684ERD\u9650\u5236\u5f37\u5236\u57f7\u884c\u8cc7\u6599\u5b8c\u6574\u6027"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Kawaii-style infographic summarizing data integrity through ERD constraints: features cute database characters, four integrity layers (Entity, Domain, Referential, User-Defined), core constraint types (Primary Key, Foreign Key, Unique, Not Null, Check), relationship cardinality examples (One-to-One, One-to-Many, Many-to-Many), normalization steps (1NF, 2NF, 3NF), and implementation tips, all in pastel colors with friendly icons for educational web content about database design best practices\" decoding=\"async\" src=\"https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/03\/kawaii-erd-data-integrity-constraints-infographic.jpg\"\/><\/figure>\n<\/div>\n<p>\u5728\u73fe\u4ee3\u8cc7\u6599\u67b6\u69cb\u4e2d\uff0c\u8cc7\u8a0a\u7684\u53ef\u9760\u6027\u53d6\u6c7a\u65bc\u8a2d\u8a08\u968e\u6bb5\u6240\u5efa\u7acb\u7684\u7d50\u69cb\u6027\u9632\u8b77\u6a5f\u5236\u3002\u8cc7\u6599\u5b8c\u6574\u6027\u4e26\u975e\u4e8b\u5f8c\u88dc\u6551\uff0c\u800c\u662f\u53ef\u4fe1\u4efb\u7cfb\u7d71\u7684\u57fa\u77f3\u3002\u5728\u8a2d\u8a08\u5be6\u9ad4\u95dc\u4fc2\u5716\uff08ERD\uff09\u6642\uff0c\u76ee\u6a19\u662f\u5efa\u7acb\u4e00\u500b\u5167\u5efa\u9632\u7bc4\u8cc7\u6599\u640d\u58de\u3001\u4e0d\u4e00\u81f4\u8207\u907a\u5931\u7684\u85cd\u5716\u3002\u900f\u904e\u61c9\u7528\u56b4\u683c\u7684\u9650\u5236\u689d\u4ef6\uff0c\u67b6\u69cb\u5e2b\u53ef\u78ba\u4fdd\u8cc7\u6599\u5eab\u5728\u8ca0\u8f09\u4e0b\u8207\u8de8\u4ea4\u6613\u904e\u7a0b\u4e2d\u7686\u80fd\u7a69\u5b9a\u4e14\u53ef\u9810\u6e2c\u5730\u904b\u4f5c\u3002<\/p>\n<p>\u82e5\u7121\u9019\u4e9b\u5f37\u5236\u57f7\u884c\u7684\u898f\u5247\uff0c\u8cc7\u6599\u5c07\u5bb9\u6613\u53d7\u5230\u4eba\u70ba\u932f\u8aa4\u3001\u61c9\u7528\u7a0b\u5f0f\u6f0f\u6d1e\u8207\u4e26\u884c\u5b58\u53d6\u554f\u984c\u7684\u5f71\u97ff\u3002\u4e00\u500b\u7d50\u69cb\u826f\u597d\u7684ERD\u5982\u540c\u61c9\u7528\u7a0b\u5f0f\u908f\u8f2f\u8207\u5132\u5b58\u5c64\u4e4b\u9593\u7684\u5408\u7d04\uff0c\u660e\u78ba\u754c\u5b9a\u4f55\u8005\u5141\u8a31\u3001\u4f55\u8005\u7981\u6b62\u3002\u672c\u6587\u8a73\u8ff0\u5982\u4f55\u900f\u904e\u56b4\u8b39\u7684\u8a2d\u8a08\u539f\u5247\uff0c\u7dad\u6301\u8cc7\u6599\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<h2>\u7406\u89e3\u8cc7\u6599\u5b8c\u6574\u6027\u7684\u5c64\u6b21 \ud83d\udd0d<\/h2>\n<p>\u5b8c\u6574\u6027\u4e26\u975e\u55ae\u4e00\u6982\u5ff5\uff0c\u800c\u662f\u9069\u7528\u65bc\u8cc7\u6599\u5eab\u7d50\u69cb\u4e0d\u540c\u5c64\u7d1a\u7684\u4e00\u7d44\u898f\u5247\u3002\u8b58\u5225\u9019\u4e9b\u5c64\u6b21\uff0c\u6709\u52a9\u65bc\u91dd\u5c0d\u6027\u5730\u5be6\u65bd\u9650\u5236\u689d\u4ef6\u3002<\/p>\n<h3>1. \u5be6\u9ad4\u5b8c\u6574\u6027<\/h3>\n<p>\u5be6\u9ad4\u5b8c\u6574\u6027\u78ba\u4fdd\u8cc7\u6599\u8868\u4e2d\u7684\u6bcf\u4e00\u5217\u7686\u53ef\u552f\u4e00\u8b58\u5225\u3002\u9019\u662f\u4efb\u4f55\u95dc\u4fc2\u6a21\u578b\u4e2d\u6700\u57fa\u672c\u7684\u8981\u6c42\u3002\u82e5\u7f3a\u4e4f\u552f\u4e00\u8b58\u5225\uff0c\u8ffd\u8e64\u8b8a\u66f4\u6216\u95dc\u4fc2\u5c07\u8b8a\u5f97\u4e0d\u53ef\u80fd\u3002<\/p>\n<ul>\n<li><strong>\u4e3b\u9375\uff1a<\/strong> \u7528\u65bc\u6a19\u793a\u8a18\u9304\u552f\u4e00\u8b58\u5225\u7684\u6b04\u4f4d\u6216\u6b04\u4f4d\u7d44\u3002<\/li>\n<li><strong>\u4e0d\u53ef\u70ba\u7a7a\uff1a<\/strong> \u4e3b\u9375\u6b04\u4f4d\u4e0d\u5f97\u5305\u542b\u7a7a\u503c\uff0c\u4ee5\u78ba\u4fdd\u6bcf\u4e00\u7b46\u8a18\u9304\u7686\u5b58\u5728\u3002<\/li>\n<li><strong>\u552f\u4e00\u6027\uff1a<\/strong> \u7121\u6cd5\u6709\u5169\u5217\u64c1\u6709\u76f8\u540c\u7684\u4e3b\u9375\u503c\u3002<\/li>\n<\/ul>\n<h3>2. \u7bc4\u570d\u5b8c\u6574\u6027<\/h3>\n<p>\u7bc4\u570d\u5b8c\u6574\u6027\u9650\u5236\u7279\u5b9a\u6b04\u4f4d\u53ef\u5132\u5b58\u7684\u503c\u3002\u9019\u78ba\u4fdd\u8cc7\u6599\u7dad\u6301\u5728\u9810\u671f\u7684\u53c3\u6578\u7bc4\u570d\u5167\uff0c\u4f8b\u5982\u8cc7\u6599\u985e\u578b\u3001\u7bc4\u570d\u6216\u683c\u5f0f\u3002<\/p>\n<ul>\n<li><strong>\u8cc7\u6599\u985e\u578b\uff1a<\/strong> \u78ba\u4fdd\u5e74\u9f61\u6b04\u4f4d\u50c5\u5132\u5b58\u6574\u6578\uff0c\u800c\u975e\u6587\u5b57\u3002<\/li>\n<li><strong>\u6aa2\u67e5\u7d04\u675f\uff1a<\/strong> \u9a57\u8b49\u503c\u662f\u5426\u843d\u5728\u7279\u5b9a\u7bc4\u570d\u5167\uff0c\u4f8b\u5982\u4ecb\u65bc0\u81f3100\u4e4b\u9593\u7684\u767e\u5206\u6bd4\u3002<\/li>\n<li><strong>\u9810\u8a2d\u503c\uff1a<\/strong> \u82e5\u63d2\u5165\u6642\u672a\u63d0\u4f9b\u503c\uff0c\u5247\u63d0\u4f9b\u9810\u8a2d\u503c\u4f5c\u70ba\u5099\u7528\u3002<\/li>\n<\/ul>\n<h3>3. \u53c3\u7167\u5b8c\u6574\u6027<\/h3>\n<p>\u9019\u78ba\u4fdd\u8868\u8207\u8868\u4e4b\u9593\u7684\u95dc\u4fc2\u4fdd\u6301\u4e00\u81f4\u3002\u82e5\u4e00\u8868\u4e2d\u7684\u8a18\u9304\u6307\u5411\u53e6\u4e00\u8868\uff0c\u5247\u76ee\u6a19\u8a18\u9304\u5fc5\u9808\u5b58\u5728\u3002\u9019\u53ef\u9632\u6b62\u51fa\u73fe\u53c3\u8003\u4e0d\u5b58\u5728\u8cc7\u6599\u7684\u5b64\u5152\u8a18\u9304\u3002<\/p>\n<ul>\n<li><strong>\u5916\u9375\uff1a<\/strong> \u9023\u7d50\u81f3\u53e6\u4e00\u8868\u4e3b\u9375\u7684\u6b04\u4f4d\u3002<\/li>\n<li><strong>\u7d1a\u806f\u898f\u5247\uff1a<\/strong> \u7576\u7236\u8a18\u9304\u8b8a\u66f4\u6642\uff0c\u5b9a\u7fa9\u76f8\u95dc\u52d5\u4f5c\uff08\u522a\u9664\u6216\u66f4\u65b0\uff09\u3002<\/li>\n<li><strong>\u7a7a\u503c\u8655\u7406\uff1a<\/strong> \u6c7a\u5b9a\u95dc\u4fc2\u662f\u5426\u53ef\u9078\uff08\u7a7a\u503c\uff09\u6216\u5fc5\u9808\u5b58\u5728\u3002<\/li>\n<\/ul>\n<h3>4. \u4f7f\u7528\u8005\u5b9a\u7fa9\u5b8c\u6574\u6027<\/h3>\n<p>\u9019\u4e9b\u662f\u4e0d\u7b26\u5408\u6a19\u6e96\u5206\u985e\u7684\u696d\u52d9\u7279\u5b9a\u898f\u5247\u3002\u5b83\u5011\u901a\u5e38\u9700\u8981\u5728\u8a2d\u8a08\u6216\u61c9\u7528\u7a0b\u5f0f\u5c64\u4e2d\u4f7f\u7528\u81ea\u8a02\u908f\u8f2f\u3002<\/p>\n<ul>\n<li><strong>\u81ea\u8a02\u9a57\u8b49\uff1a<\/strong>\u78ba\u4fdd\u65e5\u671f\u4e0d\u6703\u5728\u672a\u4f86\u3002<\/li>\n<li><strong>\u689d\u4ef6\u908f\u8f2f\uff1a<\/strong> \u5982\u679c\u72c0\u614b\u70ba\u300c\u5df2\u53d6\u6d88\u300d\uff0c\u5247\u4e0d\u5141\u8a31\u5176\u4ed6\u4ed8\u6b3e\u8a18\u9304\u3002<\/li>\n<\/ul>\n<h2>\u6838\u5fc3ERD\u9650\u5236\u53ca\u5176\u5f71\u97ff \ud83e\uddf1<\/h2>\n<p>ERD\u5c07\u9019\u4e9b\u9650\u5236\u53ef\u8996\u5316\uff0c\u4f7f\u958b\u767c\u4eba\u54e1\u548c\u5229\u76ca\u76f8\u95dc\u8005\u80fd\u5920\u6e05\u695a\u770b\u898b\u3002\u4e0b\u8868\u6982\u8ff0\u4e86\u5e38\u898b\u7684\u9650\u5236\u3001\u5176\u76ee\u7684\u4ee5\u53ca\u5c0d\u8cc7\u6599\u4e00\u81f4\u6027\u7684\u5f71\u97ff\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u9650\u5236\u985e\u578b<\/th>\n<th>\u529f\u80fd<\/th>\n<th>\u57f7\u884c\u9ede<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u4e3b\u8981\u9375<\/td>\n<td>\u552f\u4e00\u8b58\u5225\u8cc7\u6599\u5217<\/td>\n<td>\u8868\u683c\u5b9a\u7fa9<\/td>\n<\/tr>\n<tr>\n<td>\u5916\u9375<\/td>\n<td>\u9023\u7d50\u8868\u683c<\/td>\n<td>\u95dc\u4fc2\u7dda<\/td>\n<\/tr>\n<tr>\n<td>\u552f\u4e00<\/td>\n<td>\u9632\u6b62\u6b04\u4f4d\u4e2d\u51fa\u73fe\u91cd\u8907\u503c<\/td>\n<td>\u6b04\u4f4d\u5b9a\u7fa9<\/td>\n<\/tr>\n<tr>\n<td>\u4e0d\u53ef\u70ba\u7a7a<\/td>\n<td>\u6b04\u4f4d\u5fc5\u9808\u6709\u503c<\/td>\n<td>\u6b04\u4f4d\u5b9a\u7fa9<\/td>\n<\/tr>\n<tr>\n<td>\u6aa2\u67e5<\/td>\n<td>\u6839\u64da\u689d\u4ef6\u9a57\u8b49\u503c<\/td>\n<td>\u6b04\u4f4d\u6216\u8868\u683c\u5b9a\u7fa9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u7576\u9019\u4e9b\u9650\u5236\u5728\u8a2d\u8a08\u4e2d\u6b63\u78ba\u5b9a\u7fa9\u6642\uff0c\u5e95\u5c64\u8cc7\u6599\u5eab\u5f15\u64ce\u6703\u81ea\u52d5\u57f7\u884c\u5b83\u5011\u3002\u9019\u53ef\u5c07\u9a57\u8b49\u7684\u8ca0\u64d4\u5f9e\u61c9\u7528\u7a0b\u5f0f\u7a0b\u5f0f\u78bc\u4e2d\u79fb\u9664\uff0c\u964d\u4f4e\u932f\u8aa4\u548c\u5b89\u5168\u6f0f\u6d1e\u7684\u98a8\u96aa\u3002<\/p>\n<h2>\u95dc\u4fc2\u57fa\u6578\u8207\u5b8c\u6574\u6027 \ud83d\udd04<\/h2>\n<p>ERD\u4e2d\u9023\u63a5\u5be6\u9ad4\u7684\u7dda\u689d\u4ee3\u8868\u95dc\u4fc2\u3002\u9019\u4e9b\u95dc\u4fc2\u7684\u57fa\u6578\u6c7a\u5b9a\u4e86\u6240\u9700\u5b8c\u6574\u6027\u898f\u5247\u7684\u56b4\u683c\u7a0b\u5ea6\u3002<\/p>\n<h3>\u4e00\u5c0d\u4e00\u95dc\u4fc2<\/h3>\n<p>\u7576Table A\u4e2d\u7684\u8a18\u9304\u6070\u597d\u8207Table B\u4e2d\u7684\u8a18\u9304\u5339\u914d\u6642\uff0c\u5c31\u6703\u767c\u751f\u9019\u7a2e\u60c5\u6cc1\u3002\u9019\u5728\u70ba\u4e86\u5b89\u5168\u6216\u6548\u80fd\u800c\u62c6\u5206\u5927\u578b\u8868\u683c\u6642\u5f88\u5e38\u898b\u3002<\/p>\n<ul>\n<li><strong>\u7d04\u675f\uff1a<\/strong> \u5169\u65b9\u901a\u5e38\u5728\u5916\u9375\u4e0a\u5f37\u5236\u57f7\u884c\u552f\u4e00\u6027\u3002<\/li>\n<li><strong> \u7bc4\u4f8b\uff1a<\/strong> \u4e00\u500b\u4eba\u53ca\u5176\u8b77\u7167\u3002\u4e00\u500b\u4eba\u64c1\u6709\u4e00\u5f35\u8b77\u7167\uff1b\u4e00\u5f35\u8b77\u7167\u5c6c\u65bc\u4e00\u500b\u4eba\u3002<\/li>\n<\/ul>\n<h3>\u4e00\u5c0d\u591a\u95dc\u4fc2<\/h3>\n<p>\u6700\u5e38\u898b\u7684\u95dc\u4fc2\u985e\u578b\u3002Table A \u4e2d\u7684\u4e00\u7b46\u8a18\u9304\u53ef\u4ee5\u8207 Table B \u4e2d\u7684\u591a\u7b46\u8a18\u9304\u95dc\u806f\u3002<\/p>\n<ul>\n<li><strong>\u7d04\u675f\uff1a<\/strong> \u5916\u9375\u4f4d\u65bc\u300c\u591a\u300d\u7684\u4e00\u65b9\u7684\u8cc7\u6599\u8868\u4e2d\u3002<\/li>\n<li><strong>\u5b8c\u6574\u6027\uff1a<\/strong> \u5916\u9375\u5fc5\u9808\u53c3\u8003\u300c\u4e00\u300d\u65b9\u8cc7\u6599\u8868\u4e2d\u5df2\u5b58\u5728\u7684\u4e3b\u9375\u3002<\/li>\n<li><strong> \u7bc4\u4f8b\uff1a<\/strong> \u4e00\u4f4d\u9867\u5ba2\u53ca\u5176\u8a02\u55ae\u3002\u4e00\u4f4d\u9867\u5ba2\u6709\u8a31\u591a\u8a02\u55ae\uff1b\u4e00\u7b46\u8a02\u55ae\u5c6c\u65bc\u4e00\u4f4d\u9867\u5ba2\u3002<\/li>\n<\/ul>\n<h3>\u591a\u5c0d\u591a\u95dc\u4fc2<\/h3>\n<p>\u9019\u9700\u8981\u4e00\u500b\u4ea4\u96c6\u8cc7\u6599\u8868\uff0c\u5c07\u95dc\u4fc2\u5206\u89e3\u70ba\u5169\u500b\u4e00\u5c0d\u591a\u7684\u9023\u63a5\u3002<\/p>\n<ul>\n<li><strong>\u7d04\u675f\uff1a<\/strong> \u4ea4\u96c6\u8cc7\u6599\u8868\u5305\u542b\u8907\u5408\u4e3b\u9375\u6216\u552f\u4e00\u6027\u7d04\u675f\uff0c\u4ee5\u9632\u6b62\u91cd\u8907\u95dc\u806f\u3002<\/li>\n<li><strong>\u5b8c\u6574\u6027\uff1a<\/strong> \u9632\u6b62\u9023\u7d50\u8cc7\u6599\u8868\u4e2d\u7684\u5faa\u74b0\u8cc7\u6599\u6216\u91cd\u8907\u9805\u76ee\u3002<\/li>\n<li><strong> \u7bc4\u4f8b\uff1a<\/strong> 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