{"id":1524,"date":"2026-03-29T00:02:40","date_gmt":"2026-03-29T00:02:40","guid":{"rendered":"https:\/\/www.viz-read.com\/tw\/first-step-database-design-solid-erd\/"},"modified":"2026-03-29T00:02:40","modified_gmt":"2026-03-29T00:02:40","slug":"first-step-database-design-solid-erd","status":"publish","type":"post","link":"https:\/\/www.viz-read.com\/tw\/first-step-database-design-solid-erd\/","title":{"rendered":"\u8cc7\u6599\u5eab\u8a2d\u8a08\u7684\u7b2c\u4e00\u6b65\uff1a\u5982\u4f55\u5f9e\u7a69\u56fa\u7684ERD\u958b\u59cb"},"content":{"rendered":"<p>\u8a2d\u8a08\u8cc7\u6599\u5eab\u4e26\u975e\u50c5\u50c5\u662f\u8f38\u5165\u7a0b\u5f0f\u78bc\uff0c\u800c\u66f4\u5728\u65bc\u7406\u89e3\u8cc7\u6599\u4e4b\u9593\u7684\u95dc\u4fc2\u3002\u5728\u64b0\u5beb\u4efb\u4f55\u7a0b\u5f0f\u78bc\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u5efa\u7acb\u8996\u89ba\u5316\u7684\u57fa\u790e\u3002\u9019\u500b\u57fa\u790e\u5c31\u662f\u5be6\u9ad4-\u95dc\u4fc2\u5716\uff08ERD\uff09\u3002\u8df3\u904e\u9019\u4e00\u6b65\uff0c\u7b49\u65bc\u5728\u6c92\u6709\u8a2d\u8a08\u5716\u7684\u60c5\u6cc1\u4e0b\u5efa\u9020\u6469\u5929\u5927\u6a13\u3002\u7d50\u69cb\u6216\u8a31\u80fd\u6490\u4e00\u9663\u5b50\uff0c\u4f46\u96a8\u8457\u8cc7\u6599\u91cf\u589e\u52a0\uff0c\u554f\u984c\u5c31\u6703\u6d6e\u73fe\u3002\ud83e\uddf1<\/p>\n<p>\u672c\u6307\u5357\u5c07\u5e36\u9818\u60a8\u8d70\u904e\u8cc7\u6599\u5eab\u67b6\u69cb\u7684\u521d\u59cb\u968e\u6bb5\u3002\u91cd\u9ede\u5728\u65bc\u5efa\u7acb\u5f37\u5065\u8cc7\u6599\u7d50\u69cb\u6240\u9700\u7684\u6982\u5ff5\u6a21\u578b\u8207\u908f\u8f2f\u6a21\u578b\u3002\u7121\u8ad6\u60a8\u662f\u5728\u7ba1\u7406\u5ba2\u6236\u8cc7\u6599\u3001\u5eab\u5b58\uff0c\u9084\u662f\u8907\u96dc\u7684\u4ea4\u6613\u8cc7\u6599\uff0c\u9019\u4e9b\u539f\u5247\u90fd\u662f\u4e00\u81f4\u7684\u3002\u6211\u5011\u5c07\u63a2\u8a0e\u5be6\u9ad4\u3001\u5c6c\u6027\u3001\u95dc\u4fc2\u8207\u57fa\u6578\uff0c\u4e14\u4e0d\u4f9d\u8cf4\u7279\u5b9a\u5de5\u5177\u6216\u5c08\u6709\u8edf\u9ad4\u3002\u76ee\u6a19\u662f\u5efa\u7acb\u4e00\u500b\u53ef\u64f4\u5c55\u3001\u9ad8\u6548\u4e14\u6613\u65bc\u7dad\u8b77\u7684\u7cfb\u7d71\u3002\ud83d\ude80<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Hand-drawn infographic illustrating the 5-step process for creating a solid Entity-Relationship Diagram (ERD) in database design: identifying entities (Customer, Order, Product), defining attributes with primary keys, establishing relationships (1:1, 1:N, M:N) with crow's foot notation, specifying cardinality and modality constraints, and applying normalization principles (1NF, 2NF, 3NF). Visual elements include sketchy thick-outline illustrations, warning icons for common pitfalls like data redundancy and weak keys, and iterative design workflow symbols. Style: hand-drawn aesthetic with watercolor accents on white background, 16:9 aspect ratio, English labels for developers and database architects learning foundational schema design best practices.\" decoding=\"async\" src=\"https:\/\/www.viz-read.com\/wp-content\/uploads\/2026\/03\/erd-database-design-fundamentals-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>\u7406\u89e3\u5be6\u9ad4-\u95dc\u4fc2\u5716 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\ud83c\udfe2<\/h2>\n<p>\u4efb\u4f55\u8cc7\u6599\u5eab\u7684\u57fa\u77f3\u90fd\u662f\u5be6\u9ad4\u3002\u5be6\u9ad4\u4ee3\u8868\u4e00\u500b\u7368\u7279\u7684\u7269\u4ef6\u3001\u6982\u5ff5\u6216\u4eba\u7269\uff0c\u8cc7\u6599\u5373\u570d\u7e5e\u5176\u6536\u96c6\u3002\u5728\u5716\u8868\u7684\u8108\u7d61\u4e2d\uff0c\u9019\u4e9b\u5c31\u662f\u60a8\u5728\u9700\u6c42\u4e2d\u8b58\u5225\u51fa\u7684\u540d\u8a5e\u3002<\/p>\n<h3>\u73fe\u5be6\u4e16\u754c\u5be6\u9ad4 vs. \u908f\u8f2f\u5be6\u9ad4<\/h3>\n<p>\u5206\u6790\u696d\u52d9\u6d41\u7a0b\u6642\uff0c\u5fc5\u9808\u5340\u5206\u5be6\u9ad4\u7269\u4ef6\u8207\u908f\u8f2f\u6982\u5ff5\u3002\u4f8b\u5982\uff0c\u300c\u7522\u54c1\u300d\u662f\u4e00\u500b\u908f\u8f2f\u5be6\u9ad4\uff0c\u800c\u5009\u5eab\u4e2d\u7684\u4e00\u500b\u7279\u5b9a\u300c\u5c0f\u96f6\u4ef6\u300d\u5247\u662f\u5be6\u9ad4\u7684\u5177\u9ad4\u7bc4\u4f8b\u3002\u8cc7\u6599\u5eab\u5132\u5b58\u7684\u662f\u908f\u8f2f\u5be6\u9ad4\uff0c\u4e26\u900f\u904e\u552f\u4e00\u8b58\u5225\u78bc\u8ffd\u8e64\u5404\u500b\u5be6\u4f8b\u3002<\/p>\n<h3>\u8b58\u5225\u5019\u9078\u5be6\u9ad4<\/h3>\n<p>\u8981\u627e\u51fa\u5be6\u9ad4\uff0c\u8acb\u6aa2\u8996\u696d\u52d9\u898f\u5247\u8207\u529f\u80fd\u9700\u6c42\u3002\u8acb\u5c0b\u627e\uff1a<\/p>\n<ul>\n<li><strong>\u540d\u8a5e\uff1a<\/strong> \u5728\u9700\u6c42\u6587\u4ef6\u4e2d\u5c0b\u627e\u5927\u5beb\u7684\u540d\u8a5e\u3002<\/li>\n<li><strong>\u6838\u5fc3\u529f\u80fd\uff1a<\/strong> \u57f7\u884c\u4e86\u54ea\u4e9b\u52d5\u4f5c\uff1f\u8ab0\u53c3\u8207\u5176\u4e2d\uff1f<\/li>\n<li><strong>\u6cd5\u898f\u9700\u6c42\uff1a<\/strong> \u54ea\u4e9b\u8cc7\u6599\u5fc5\u9808\u4fdd\u7559\u4ee5\u7b26\u5408\u6cd5\u898f\uff1f<\/li>\n<\/ul>\n<p>\u5e38\u898b\u7bc4\u4f8b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5ba2\u6236\uff1a<\/strong> \u8ab0\u5728\u8cfc\u8cb7\u6216\u4e92\u52d5\uff1f<\/li>\n<li><strong>\u8a02\u55ae\uff1a<\/strong> \u4ea4\u6613\u8a18\u9304\u3002<\/li>\n<li><strong>\u7522\u54c1\uff1a<\/strong> \u6b63\u5728\u92b7\u552e\u7684\u9805\u76ee\u3002<\/li>\n<li><strong>\u54e1\u5de5\uff1a<\/strong> \u8ab0\u5728\u7ba1\u7406\u7cfb\u7d71\uff1f<\/li>\n<li><strong>\u5730\u9ede\uff1a<\/strong> \u8ca8\u7269\u767c\u9001\u5230\u54ea\u88e1\uff1f<\/li>\n<\/ul>\n<h3>\u5be6\u9ad4\u547d\u540d\u6163\u4f8b<\/h3>\n<p>\u4e00\u81f4\u6027\u662f\u53ef\u8b80\u6027\u7684\u95dc\u9375\u3002\u5728\u5716\u8868\u4e2d\u4f7f\u7528\u55ae\u6578\u3001\u8907\u6578\u6216\u4e00\u81f4\u7684\u547d\u540d\u6a19\u6e96\u3002\u9664\u975e\u662f\u696d\u754c\u6a19\u6e96\uff0c\u5426\u5247\u907f\u514d\u4f7f\u7528\u7e2e\u5beb\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u300c\u5ba2\u6236\u300d\u800c\u975e\u300cCust\u300d\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u65b9\u9762<\/th>\n<th>\u5efa\u8b70<\/th>\n<th>\u7bc4\u4f8b<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6848\u4f8b<\/td>\n<td>PascalCase \u6216 snake_case<\/td>\n<td>CustomerRecord \u6216 customer_record<\/td>\n<\/tr>\n<tr>\n<td>\u55ae\u8907\u6578<\/td>\n<td>\u8868\u683c\u4f7f\u7528\u55ae\u6578<\/td>\n<td>\u4f7f\u7528<em>\u5ba2\u6236<\/em>\uff0c\u800c\u975e<em>\u5ba2\u6236\u5011<\/em><\/td>\n<\/tr>\n<tr>\n<td>\u6e05\u6670\u5ea6<\/td>\n<td>\u907f\u514d\u4f7f\u7528\u901a\u7528\u540d\u7a31<\/td>\n<td>\u4f7f\u7528<em>\u767c\u7968<\/em>\uff0c\u800c\u975e<em>\u6587\u4ef6<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u6b65\u9a5f 2\uff1a\u5b9a\u7fa9\u5c6c\u6027 \ud83d\udcdd<\/h2>\n<p>\u4e00\u65e6\u8b58\u5225\u51fa\u5be6\u9ad4\uff0c\u60a8\u5fc5\u9808\u5b9a\u7fa9\u95dc\u65bc\u5b83\u5011\u5132\u5b58\u54ea\u4e9b\u8cc7\u8a0a\u3002\u9019\u4e9b\u7d30\u7bc0\u7a31\u70ba\u5c6c\u6027\u3002\u5c6c\u6027\u63cf\u8ff0\u5be6\u9ad4\u7684\u7279\u5fb5\u3002<\/p>\n<h3>\u5c6c\u6027\u7684\u985e\u578b<\/h3>\n<p>\u5c6c\u6027\u6839\u64da\u5176\u89d2\u8272\u548c\u884c\u70ba\u53ef\u5206\u70ba\u5e7e\u500b\u985e\u5225\uff1a<\/p>\n<ul>\n<li><strong>\u63cf\u8ff0\u6027\u5c6c\u6027\uff1a<\/strong> \u57fa\u672c\u4e8b\u5be6\uff0c\u4f8b\u5982\u59d3\u540d\u3001\u5730\u5740\u6216\u96fb\u8a71\u865f\u78bc\u3002<\/li>\n<li><strong>\u95dc\u9375\u5c6c\u6027\uff1a<\/strong> \u552f\u4e00\u8b58\u5225\u78bc\u3002\u6bcf\u500b\u5be6\u9ad4\u90fd\u81f3\u5c11\u9700\u8981\u4e00\u500b\u95dc\u9375\u5c6c\u6027\u4f86\u5340\u5206\u65bc\u5176\u4ed6\u5be6\u9ad4\u3002<\/li>\n<li><strong>\u8907\u5408\u5c6c\u6027\uff1a<\/strong> \u53ef\u4ee5\u7d30\u5206\u70ba\u8f03\u5c0f\u90e8\u5206\u7684\u8cc7\u6599\uff08\u4f8b\u5982\uff0c\u5730\u5740\u53ef\u62c6\u5206\u70ba\u8857\u9053\u3001\u57ce\u5e02\u3001\u90f5\u905e\u5340\u865f\uff09\u3002<\/li>\n<li><strong>\u884d\u751f\u5c6c\u6027\uff1a<\/strong> \u5f9e\u5176\u4ed6\u8cc7\u6599\u8a08\u7b97\u5f97\u51fa\u7684\u503c\uff08\u4f8b\u5982\uff0c\u5e74\u9f61\u7531\u51fa\u751f\u65e5\u671f\u63a8\u5c0e\u5f97\u51fa\uff09\u3002<\/li>\n<li><strong>\u591a\u503c\u5c6c\u6027\uff1a<\/strong> \u53ef\u4ee5\u5132\u5b58\u591a\u500b\u503c\u7684\u6b04\u4f4d\uff08\u4f8b\u5982\uff0c\u55ae\u4e00\u500b\u4eba\u7684\u591a\u500b\u96fb\u8a71\u865f\u78bc\uff09\u3002<\/li>\n<\/ul>\n<h3>\u4e3b\u9375\uff1a\u6838\u5fc3\u9328\u9ede \ud83d\udd11<\/h3>\n<p>\u4e3b\u9375\uff08PK\uff09\u662f\u6700\u95dc\u9375\u7684\u5c6c\u6027\u3002\u5b83\u5fc5\u9808\u5728\u8868\u683c\u4e2d\u7684\u6bcf\u7b46\u8a18\u9304\u4e2d\u90fd\u662f\u552f\u4e00\u7684\u3002\u9019\u78ba\u4fdd\u4e86\u6c92\u6709\u5169\u5217\u662f\u76f8\u540c\u7684\u3002\u4e3b\u9375\u901a\u5e38\u7531\u7cfb\u7d71\u81ea\u52d5\u7522\u751f\uff0c\u4f8b\u5982\u81ea\u52d5\u905e\u589e\u7684\u6574\u6578\u6216 UUID\u3002<\/p>\n<p>\u9078\u64c7\u9375\u6642\u7684\u8003\u91cf\uff1a<\/p>\n<ul>\n<li><strong>\u7a69\u5b9a\u6027\uff1a<\/strong> \u8a72\u503c\u4e0d\u61c9\u96a8\u6642\u9593\u6539\u8b8a\u3002\u4f7f\u7528\u59d3\u540d\u6709\u98a8\u96aa\uff1b\u4f7f\u7528 ID \u66f4\u5b89\u5168\u3002<\/li>\n<li><strong>\u552f\u4e00\u6027\uff1a<\/strong> \u4e0d\u5141\u8a31\u91cd\u8907\u3002<\/li>\n<li><strong>\u975e\u7a7a\u6027\uff1a<\/strong> \u6c92\u6709\u9375\uff0c\u8a18\u9304\u5c31\u7121\u6cd5\u5b58\u5728\u3002<\/li>\n<\/ul>\n<h2>\u6b65\u9a5f 3\uff1a\u5efa\u7acb\u95dc\u4fc2 \ud83d\udd17<\/h2>\n<p>\u5be6\u9ad4\u5f88\u5c11\u5b64\u7acb\u5b58\u5728\u3002\u9867\u5ba2\u4e0b\u8a02\u55ae\u3002\u54e1\u5de5\u53c3\u8207\u5c08\u6848\u3002\u9019\u4e9b\u9023\u7d50\u5c31\u662f\u95dc\u4fc2\u3002\u5b9a\u7fa9\u95dc\u4fc2\u6b63\u662f\u5be6\u9ad4\u95dc\u4fc2\u5716\uff08ERD\uff09\u771f\u6b63\u5f37\u5927\u7684\u5730\u65b9\u3002<\/p>\n<h3>\u95dc\u4fc2\u7684\u985e\u578b<\/h3>\n<p>\u6709\u4e09\u7a2e\u6a19\u6e96\u7684\u57fa\u6578\u7528\u4f86\u63cf\u8ff0\u5be6\u9ad4\u4e4b\u9593\u7684\u4e92\u52d5\u65b9\u5f0f\uff1a<\/p>\n<ol>\n<li><strong>\u4e00\u5c0d\u4e00\uff081:1\uff09\uff1a<\/strong> \u5be6\u9ad4 A \u7684\u4e00\u500b\u5be6\u4f8b\u50c5\u8207\u5be6\u9ad4 B \u7684\u4e00\u500b\u5be6\u4f8b\u76f8\u95dc\u3002<\/li>\n<li><strong>\u4e00\u5c0d\u591a\uff081:N\uff09\uff1a<\/strong> \u5be6\u9ad4 A \u7684\u4e00\u500b\u5be6\u4f8b\u8207\u5be6\u9ad4 B \u7684\u591a\u500b\u5be6\u4f8b\u76f8\u95dc\u3002<\/li>\n<li><strong>\u591a\u5c0d\u591a (M:N)\uff1a<\/strong>\u5be6\u9ad4 A \u7684\u591a\u500b\u5be6\u4f8b\u8207\u5be6\u9ad4 B \u7684\u591a\u500b\u5be6\u4f8b\u76f8\u95dc\u806f\u3002<\/li>\n<\/ol>\n<h3>\u8655\u7406\u591a\u5c0d\u591a\u95dc\u4fc2<\/h3>\n<p>\u5728\u95dc\u4fc2\u6a21\u578b\u4e2d\uff0c\u76f4\u63a5\u7684\u591a\u5c0d\u591a\u95dc\u4fc2\u5728\u7269\u7406\u4e0a\u4e0d\u88ab\u652f\u63f4\u3002\u5fc5\u9808\u4f7f\u7528\u95dc\u806f\u5be6\u9ad4\uff08\u4e5f\u7a31\u70ba\u6a4b\u63a5\u8868\u6216\u806f\u7d50\u8868\uff09\u4f86\u89e3\u6c7a\u3002\u9019\u500b\u65b0\u7684\u5be6\u9ad4\u5c07 M:N \u95dc\u4fc2\u62c6\u5206\u70ba\u5169\u500b\u4e00\u5c0d\u591a\u95dc\u4fc2\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u4e00\u540d\u5b78\u751f\u53ef\u4ee5\u9078\u4fee\u591a\u9580\u8ab2\u7a0b\uff0c\u800c\u4e00\u9580\u8ab2\u7a0b\u4e5f\u53ef\u4ee5\u6709\u8a31\u591a\u5b78\u751f\u3002\u4e0d\u61c9\u76f4\u63a5\u9023\u7d50\u5b83\u5011\uff0c\u800c\u662f\u5efa\u7acb\u4e00\u500b<em>\u8a3b\u518a<\/em>\u5be6\u9ad4\u3002\u6b64\u8868\u683c\u5132\u5b58\u5b78\u751f ID \u548c\u8ab2\u7a0b ID\uff0c\u4ee5\u53ca\u8a72\u8a3b\u518a\u7684\u4efb\u4f55\u7279\u5b9a\u8cc7\u6599\uff08\u4f8b\u5982\u6210\u7e3e\uff09\u3002<\/p>\n<h2>\u6b65\u9a5f 4\uff1a\u57fa\u6578\u8207\u6a21\u614b\u6027 \ud83d\udd22<\/h2>\n<p>\u57fa\u6578\u5b9a\u7fa9\u95dc\u4fc2\u7684\u6578\u91cf\u3002\u6a21\u614b\u6027\u5b9a\u7fa9\u53ef\u9078\u6027\uff08\u95dc\u4fc2\u662f\u5f37\u5236\u7684\u9084\u662f\u53ef\u9078\u7684\uff09\u3002\u9019\u4e9b\u7d30\u7bc0\u78ba\u4fdd\u8cc7\u6599\u5b8c\u6574\u6027\u3002<\/p>\n<h3>\u57fa\u6578\u7b26\u865f<\/h3>\n<p>\u8996\u89ba\u7b26\u865f\u6709\u52a9\u65bc\u958b\u767c\u4eba\u54e1\u7406\u89e3\u7d04\u675f\u3002\u5e38\u898b\u7b26\u865f\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u4e00\uff1a<\/strong> \u4e00\u689d\u76f4\u7dda\u6216\u77ed\u7dda\uff08-\uff09\u3002<\/li>\n<li><strong>\u591a\uff1a<\/strong> \u4e4c\u9e26\u8173\u7b26\u865f\uff08\u221e\uff09\u6216\u4e09\u500b\u5206\u53c9\u3002<\/li>\n<li><strong>\u53ef\u9078\uff1a<\/strong> \u4e00\u500b\u5713\u5708\uff08\u25cb\uff09\uff0c\u8868\u793a\u5141\u8a31\u96f6\u500b\u3002<\/li>\n<li><strong>\u5f37\u5236\uff1a<\/strong> \u4e00\u689d\u5be6\u7dda\uff0c\u8868\u793a\u81f3\u5c11\u9700\u8981\u4e00\u500b\u3002<\/li>\n<\/ul>\n<h3>\u53c3\u8207\u7d04\u675f<\/h3>\n<p>\u7406\u89e3\u53c3\u8207\u95dc\u4fc2\u5c0d\u65bc\u61c9\u7528\u7a0b\u5f0f\u908f\u8f2f\u81f3\u95dc\u91cd\u8981\u3002\u8acb\u8003\u616e\u4ee5\u4e0b\u60c5\u5883\uff1a<\/p>\n<ul>\n<li><strong>\u5b8c\u5168\u53c3\u8207\uff1a<\/strong> \u6bcf\u4e00\u4f4d\u5ba2\u6236 <em>\u5fc5\u9808<\/em>\u64c1\u6709\u4e00\u7b46\u8a02\u55ae\u3002\uff08\u5f37\u5236\uff09<\/li>\n<li><strong>\u90e8\u5206\u53c3\u8207\uff1a<\/strong> \u4e00\u7b46\u8a02\u55ae <em>\u53ef\u80fd<\/em>\u64c1\u6709\u4e00\u500b\u9001\u8ca8\u5730\u5740\u3002\uff08\u53ef\u9078\uff09<\/li>\n<\/ul>\n<p>\u932f\u8aa4\u7684\u6a21\u614b\u6027\u6703\u5c0e\u81f4\u8cc7\u6599\u5eab\u932f\u8aa4\u3002\u5982\u679c\u7cfb\u7d71\u8981\u6c42\u5f37\u5236\u95dc\u4fc2\uff0c\u4f46\u8cc7\u6599\u5eab\u5141\u8a31\u7a7a\u503c\uff0c\u7576\u8cc7\u6599\u907a\u5931\u6642\uff0c\u61c9\u7528\u7a0b\u5f0f\u908f\u8f2f\u5c07\u6703\u5931\u6548\u3002<\/p>\n<h2>\u6b65\u9a5f 5\uff1a\u6a19\u6e96\u5316\u4e0a\u4e0b\u6587 \ud83d\udd04<\/h2>\n<p>\u96d6\u7136 ERD \u662f\u4e00\u500b\u908f\u8f2f\u6a21\u578b\uff0c\u4f46\u5fc5\u9808\u7b26\u5408\u6a19\u6e96\u5316\u539f\u5247\u3002\u6a19\u6e96\u5316\u80fd\u6e1b\u5c11\u5197\u9918\u4e26\u63d0\u5347\u8cc7\u6599\u5b8c\u6574\u6027\u3002\u9019\u5305\u62ec\u5c07\u5c6c\u6027\u7d44\u7e54\u6210\u8868\u683c\uff0c\u4ee5\u6700\u5c0f\u5316\u4f9d\u8cf4\u95dc\u4fc2\u3002<\/p>\n<h3>\u7b2c\u4e00\u7bc4\u5f0f (1NF)<\/h3>\n<p>\u78ba\u4fdd\u503c\u70ba\u539f\u5b50\u6027\u3002\u6b04\u4f4d\u4e0d\u61c9\u5305\u542b\u9805\u76ee\u6e05\u55ae\u3002\u4f8b\u5982\uff0c\u4e0d\u8981\u5728\u300c\u8208\u8da3\u300d\u6b04\u4f4d\u4e2d\u5132\u5b58\u300c\u95b1\u8b80\u3001\u5065\u884c\u3001\u7a0b\u5f0f\u8a2d\u8a08\u300d\uff0c\u800c\u61c9\u5efa\u7acb\u4e00\u500b\u7368\u7acb\u7684\u300c\u8208\u8da3\u300d\u8868\u683c\u3002<\/p>\n<h3>\u7b2c\u4e8c\u7bc4\u5f0f (2NF)<\/h3>\n<p>\u6d88\u9664\u90e8\u5206\u4f9d\u8cf4\u3002\u6240\u6709\u975e\u9375\u5c6c\u6027\u5fc5\u9808\u4f9d\u8cf4\u6574\u500b\u4e3b\u9375\uff0c\u800c\u975e\u50c5\u50c5\u5176\u4e2d\u4e00\u90e8\u5206\u3002\u9019\u901a\u5e38\u9069\u7528\u65bc\u8868\u683c\u5177\u6709\u8907\u5408\u9375\u7684\u60c5\u6cc1\u3002<\/p>\n<h3>\u7b2c\u4e09\u7bc4\u5f0f (3NF)<\/h3>\n<p>\u6d88\u9664\u50b3\u905e\u4f9d\u8cf4\u3002\u975e\u9375\u5c6c\u6027\u4e0d\u61c9\u4f9d\u8cf4\u5176\u4ed6\u975e\u9375\u5c6c\u6027\u3002\u4f8b\u5982\uff0c\u5728\u300c\u54e1\u5de5\u300d\u8868\u683c\u4e2d\uff0c\u82e5\u6839\u64da\u300c\u8fa6\u516c\u5ba4\u7de8\u865f\u300d\u5132\u5b58\u300c\u57ce\u5e02\u300d\uff0c\u5247\u61c9\u5c07\u300c\u8fa6\u516c\u5ba4\u7de8\u865f\u300d\u8207\u300c\u57ce\u5e02\u300d\u5206\u96e2\u81f3\u300c\u8fa6\u516c\u5ba4\u300d\u8868\u683c\u4e2d\u3002<\/p>\n<p>ERD \u6709\u52a9\u65bc\u8996\u89ba\u5316\u9019\u4e9b\u4f9d\u8cf4\u95dc\u4fc2\u3002\u5982\u679c\u4f60\u767c\u73fe\u5c6c\u6027\u4ee5\u6697\u793a\u91cd\u8907\u7684\u65b9\u5f0f\u5206\u7d44\uff0c\u5247\u5728\u64b0\u5beb SQL \u524d\u5fc5\u9808\u8abf\u6574 ERD\u3002\u2699\ufe0f<\/p>\n<h2>\u5e38\u898b\u9677\u9631\u9808\u907f\u514d \u26a0\ufe0f<\/h2>\n<p>\u5373\u4f7f\u7d93\u9a57\u8c50\u5bcc\u7684\u8a2d\u8a08\u5e2b\u5728\u521d\u671f\u968e\u6bb5\u4e5f\u6703\u72af\u932f\u3002\u53ca\u65e9\u8b58\u5225\u9019\u4e9b\u9677\u9631\u53ef\u5927\u5e45\u7bc0\u7701\u958b\u767c\u6642\u9593\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u9677\u9631<\/th>\n<th>\u5f8c\u679c<\/th>\n<th>\u89e3\u6c7a\u65b9\u6848<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u907a\u6f0f\u7684\u95dc\u4fc2<\/td>\n<td>\u8cc7\u6599\u8b8a\u6210\u5b64\u7acb\u7684\u5cf6\u5dbc<\/td>\n<td>\u5be9\u67e5\u6240\u6709\u9023\u63a5\u7684\u9700\u6c42<\/td>\n<\/tr>\n<tr>\n<td>\u904e\u5ea6\u6a19\u6e96\u5316<\/td>\n<td>\u67e5\u8a62\u8b8a\u5f97\u904e\u65bc\u8907\u96dc<\/td>\n<td>\u5e73\u8861\u8cc7\u6599\u5b8c\u6574\u6027\u8207\u8b80\u53d6\u6548\u80fd<\/td>\n<\/tr>\n<tr>\n<td>\u5ffd\u7565\u8cc7\u6599\u985e\u578b<\/td>\n<td>\u5132\u5b58\u6548\u7387\u4f4e\u4e0b\u8207\u932f\u8aa4<\/td>\n<td>\u76e1\u65e9\u5b9a\u7fa9\u985e\u578b\uff08\u65e5\u671f\u3001\u6578\u5b57\u3001\u6587\u5b57\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u786c\u7de8\u78bc\u503c<\/td>\n<td>\u7cfb\u7d71\u8b8a\u5f97\u50f5\u5316<\/td>\n<td>\u5c0d\u975c\u614b\u8cc7\u6599\u4f7f\u7528\u67e5\u95b1\u8868\u683c<\/td>\n<\/tr>\n<tr>\n<td>\u5f31\u9375<\/td>\n<td>\u8ffd\u8e64\u8a18\u9304\u56f0\u96e3<\/td>\n<td>\u78ba\u4fdd\u9375\u5177\u6709\u552f\u4e00\u6027\u8207\u7a69\u5b9a\u6027<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u6587\u4ef6\u7de8\u5beb\u8207\u5be9\u67e5 \ud83d\udcc4<\/h2>\n<p>ERD 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