{"id":1600,"date":"2026-03-24T22:35:25","date_gmt":"2026-03-24T22:35:25","guid":{"rendered":"https:\/\/www.viz-read.com\/tw\/from-blank-page-to-erd-guide-for-new-engineers\/"},"modified":"2026-03-24T22:35:25","modified_gmt":"2026-03-24T22:35:25","slug":"from-blank-page-to-erd-guide-for-new-engineers","status":"publish","type":"post","link":"https:\/\/www.viz-read.com\/tw\/from-blank-page-to-erd-guide-for-new-engineers\/","title":{"rendered":"\u5f9e\u7a7a\u767d\u9801\u9762\u5230ERD\uff1a\u65b0\u5de5\u7a0b\u5e2b\u7684\u5168\u9762\u6307\u5357"},"content":{"rendered":"<p>\u958b\u59cb\u8edf\u9ad4\u958b\u767c\u4e4b\u65c5\u6642\uff0c\u901a\u5e38\u5f9e\u4e00\u5f35\u7a7a\u767d\u9801\u9762\u958b\u59cb\u3002\u7121\u8ad6\u4f60\u662f\u64b0\u5beb\u9700\u6c42\u3001\u8349\u64ec\u67b6\u69cb\uff0c\u9084\u662f\u898f\u5283\u8cc7\u6599\u5eab\u7d50\u69cb\uff0c\u5c07\u60f3\u6cd5\u4ee5\u8996\u89ba\u5316\u65b9\u5f0f\u5448\u73fe\u90fd\u81f3\u95dc\u91cd\u8981\u3002\u6b64\u904e\u7a0b\u4e2d\u6700\u57fa\u672c\u7684\u5de5\u5177\u4e4b\u4e00\u4fbf\u662f\u5be6\u9ad4\u95dc\u4fc2\u5716\uff08ERD\uff09\u3002\u672c\u6307\u5357\u5c07\u5e36\u4f60\u5f9e\u96f6\u958b\u59cb\u5efa\u7acb\u7a69\u5065\u7684ERD\uff0c\u8457\u91cd\u65bc\u57fa\u672c\u539f\u5247\u800c\u975e\u7279\u5b9a\u5de5\u5177\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Sketch-style infographic illustrating the complete Entity Relationship Diagram (ERD) creation workflow for new software engineers, showing step-by-step process from requirements gathering to database implementation, including entities, attributes, relationships, cardinality notation (1:1, 1:N, M:N), Crow's Foot vs Chen notation comparison, normalization steps, common pitfalls to avoid, and best practices for maintainable database design\" decoding=\"async\" src=\"https:\/\/www.viz-read.com\/wp-content\/uploads\/2026\/03\/erd-workflow-sketch-infographic-16x9-1.jpg\"\/><\/figure>\n<\/div>\n<h2>\u70ba\u4ec0\u9ebc\u5be6\u9ad4\u95dc\u4fc2\u5716\u81f3\u95dc\u91cd\u8981 \ud83d\udd0d<\/h2>\n<p>\u5728\u756b\u51fa\u4efb\u4f55\u4e00\u500b\u65b9\u6846\u6216\u7dda\u689d\u4e4b\u524d\uff0c\u7406\u89e3\u5716\u8868\u7684\u76ee\u7684\u81f3\u95dc\u91cd\u8981\u3002ERD\u4e0d\u50c5\u50c5\u662f\u4e00\u5f35\u5716\u7247\uff0c\u66f4\u662f\u8cc7\u6599\u5132\u5b58\u8207\u5b58\u53d6\u7684\u85cd\u5716\u3002\u5b83\u5b9a\u7fa9\u4e86\u8cc7\u6599\u7684\u7d50\u69cb\u65b9\u5f0f\uff0c\u4ee5\u53ca\u4e0d\u540c\u8cc7\u8a0a\u4e4b\u9593\u7684\u95dc\u806f\u3002\u82e5\u7121\u660e\u78ba\u898f\u5283\uff0c\u8cc7\u6599\u5eab\u5c07\u8b8a\u5f97\u6df7\u4e82\uff0c\u5c0e\u81f4\u8cc7\u6599\u91cd\u8907\u3001\u4e0d\u4e00\u81f4\uff0c\u4ee5\u53ca\u96e3\u4ee5\u7dad\u8b77\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u6e05\u6670\u6027\uff1a<\/strong> \u5b83\u5c07\u8907\u96dc\u7684\u8cc7\u6599\u95dc\u4fc2\u8f49\u5316\u70ba\u5229\u76ca\u76f8\u95dc\u8005\u80fd\u5920\u7406\u89e3\u7684\u8996\u89ba\u683c\u5f0f\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u6e9d\u901a\uff1a<\/strong> \u5b83\u6210\u70ba\u958b\u767c\u4eba\u54e1\u3001\u8cc7\u6599\u5eab\u7ba1\u7406\u54e1\u8207\u696d\u52d9\u5206\u6790\u5e2b\u4e4b\u9593\u7684\u5171\u540c\u8a9e\u8a00\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u9a57\u8b49\uff1a<\/strong> \u5b83\u8b93\u4f60\u5728\u64b0\u5beb\u4efb\u4f55\u7a0b\u5f0f\u78bc\u4e4b\u524d\u5c31\u80fd\u767c\u73fe\u908f\u8f2f\u932f\u8aa4\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u6587\u4ef6\u5316\uff1a<\/strong> \u5b83\u63d0\u4f9b\u4e86\u7cfb\u7d71\u8cc7\u6599\u67b6\u69cb\u7684\u6b77\u53f2\u7d00\u9304\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>ERD\u7684\u6838\u5fc3\u5143\u4ef6 \ud83d\udce6<\/h2>\n<p>\u8981\u5efa\u7acb\u5716\u8868\uff0c\u5fc5\u9808\u7406\u89e3\u5176\u57fa\u672c\u69cb\u6210\u3002\u6bcf\u500b\u5716\u8868\u90fd\u5305\u542b\u4e09\u500b\u4e3b\u8981\u5143\u7d20\uff1a\u5be6\u9ad4\u3001\u5c6c\u6027\u8207\u95dc\u4fc2\u3002<\/p>\n<h3>1. \u5be6\u9ad4 \ud83c\udfe2<\/h3>\n<p>\u5be6\u9ad4\u4ee3\u8868\u7cfb\u7d71\u5167\u7684\u4e00\u500b\u7368\u7acb\u7269\u4ef6\u6216\u6982\u5ff5\u3002\u5728\u8cc7\u6599\u5eab\u60c5\u5883\u4e2d\uff0c\u9019\u901a\u5e38\u5c0d\u61c9\u5230\u4e00\u5f35\u8868\u683c\u3002\u5be6\u9ad4\u53ef\u4ee5\u662f\u5177\u9ad4\u7684\uff0c\u4f8b\u5982<strong>\u5ba2\u6236<\/strong> \u6216 <strong>\u7522\u54c1<\/strong>\uff0c\u4e5f\u53ef\u4ee5\u662f\u62bd\u8c61\u7684\uff0c\u4f8b\u5982<strong>\u8a02\u55ae<\/strong> \u6216 <strong>\u8a02\u95b1<\/strong>.<\/p>\n<ul>\n<li>\n<p><strong>\u8b58\u5225\u7b26\uff1a<\/strong> \u6bcf\u500b\u5be6\u9ad4\u90fd\u5fc5\u9808\u6709\u4e00\u7a2e\u7368\u7279\u7684\u65b9\u5f0f\u4f86\u5340\u5206\u3002\u9019\u901a\u5e38\u7a31\u70ba\u4e3b\u9375\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u540d\u7a31\uff1a<\/strong> \u70ba\u4e86\u6e05\u6670\u8d77\u898b\uff0c\u8acb\u4f7f\u7528\u55ae\u6578\u540d\u8a5e\uff08\u4f8b\u5982<em>\u66f8\u7c4d<\/em> \u800c\u975e <em>\u66f8\u7c4d<\/em>).<\/p>\n<\/li>\n<li>\n<p><strong>\u8907\u6578\u5f62\u5f0f\uff1a<\/strong>\u70ba\u4fdd\u6301\u4e00\u81f4\u6027\uff0c\u8acb\u907f\u514d\u5728\u5716\u4e2d\u5c07\u5be6\u9ad4\u540d\u7a31\u8907\u6578\u5316\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>2. \u5c6c\u6027 \ud83c\udff7\ufe0f<\/h3>\n<p>\u5c6c\u6027\u63cf\u8ff0\u5be6\u9ad4\u7684\u7279\u6027\u3002\u5b83\u5011\u5b9a\u7fa9\u4e86\u95dc\u65bc\u8a72\u5be6\u9ad4\u6240\u5132\u5b58\u7684\u8cc7\u8a0a\u5167\u5bb9\u3002\u4f8b\u5982\uff0c\u4e00\u500b<strong>\u9867\u5ba2<\/strong>\u5be6\u9ad4\u53ef\u80fd\u5177\u6709\u5982\u4e0b\u5c6c\u6027\uff1a<em>\u59d3\u540d<\/em>, <em>\u96fb\u5b50\u90f5\u4ef6<\/em>\uff0c\u4ee5\u53ca<em>\u96fb\u8a71\u865f\u78bc<\/em>.<\/p>\n<ul>\n<li>\n<p><strong>\u8cc7\u6599\u985e\u578b\uff1a<\/strong>\u5c6c\u6027\u5177\u6709\u7279\u5b9a\u985e\u578b\uff0c\u4f8b\u5982\u6587\u5b57\u3001\u6578\u5b57\u3001\u65e5\u671f\u6216\u5e03\u6797\u503c\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u7d04\u675f\u689d\u4ef6\uff1a<\/strong>\u67d0\u4e9b\u5c6c\u6027\u70ba\u5fc5\u8981\u9805\u76ee\uff08\u975e\u7a7a\uff09\uff0c\u800c\u5176\u4ed6\u5c6c\u6027\u5247\u5141\u8a31\u70ba\u7a7a\u503c\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u9375\uff1a<\/strong>\u5340\u5206\u4e3b\u9375\uff08\u552f\u4e00\u8b58\u5225\u78bc\uff09\u8207\u5916\u9375\uff08\u9023\u7d50\u81f3\u53e6\u4e00\u5be6\u9ad4\uff09\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>3. \u95dc\u4fc2 \ud83d\udd17<\/h3>\n<p>\u95dc\u4fc2\u5b9a\u7fa9\u4e86\u5be6\u9ad4\u4e4b\u9593\u7684\u4e92\u52d5\u65b9\u5f0f\u3002\u5b83\u5011\u63cf\u8ff0\u4e86\u8cc7\u6599\u9ede\u4e4b\u9593\u7684\u95dc\u806f\u6027\u3002\u95dc\u4fc2\u5c07\u5169\u500b\u5be6\u9ad4\u9023\u7d50\u8d77\u4f86\uff0c\u986f\u793a\u5b83\u5011\u5982\u4f55\u76f8\u4e92\u5f71\u97ff\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u65b9\u5411\uff1a<\/strong>\u95dc\u4fc2\u53ef\u4ee5\u662f\u55ae\u5411\u6216\u96d9\u5411\u7684\uff0c\u4f46\u8cc7\u6599\u5eab\u901a\u5e38\u5c07\u5176\u5132\u5b58\u70ba\u6709\u5411\u9023\u7d50\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u57fa\u6578\uff1a<\/strong>\u9019\u5b9a\u7fa9\u4e86\u6578\u503c\u95dc\u4fc2\uff08\u4f8b\u5982\uff0c\u4e00\u5c0d\u591a\uff09\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u53c3\u8207\u5ea6\uff1a<\/strong>\u6c7a\u5b9a\u95dc\u4fc2\u662f\u5f37\u5236\u6027\u7684\u9084\u662f\u53ef\u9078\u7684\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>\u7406\u89e3\u57fa\u6578 \u2696\ufe0f<\/h2>\n<p>\u57fa\u6578\u662fERD\u4e2d\u6700\u91cd\u8981\u7684\u90e8\u5206\u3002\u5b83\u6c7a\u5b9a\u4e86\u67d0\u4e00\u5be6\u9ad4\u7684\u5be6\u4f8b\u8207\u53e6\u4e00\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u806f\u6578\u91cf\u3002\u5c0d\u57fa\u6578\u7684\u8aa4\u89e3\u662f\u5c0e\u81f4\u8cc7\u6599\u5eab\u8a2d\u8a08\u7f3a\u9677\u7684\u9996\u8981\u539f\u56e0\u3002<\/p>\n<table style=\"min-width: 75px;\">\n<colgroup>\n<col style=\"min-width: 25px;\"\/>\n<col style=\"min-width: 25px;\"\/>\n<col style=\"min-width: 25px;\"\/><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u985e\u578b<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u63cf\u8ff0<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u7bc4\u4f8b<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p><strong>\u4e00\u5c0d\u4e00 (1:1)<\/strong><\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5be6\u9ad4 A \u7684\u55ae\u4e00\u5be6\u4f8b\u50c5\u8207\u5be6\u9ad4 B \u7684\u55ae\u4e00\u5be6\u4f8b\u76f8\u95dc\u806f\u3002<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4e00 <em>\u54e1\u5de5<\/em> \u64c1\u6709\u4e00\u500b <em>\u8eab\u5206\u8b49<\/em>.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p><strong>\u4e00\u5c0d\u591a (1:N)<\/strong><\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5be6\u9ad4 A \u7684\u55ae\u4e00\u5be6\u4f8b\u8207\u5be6\u9ad4 B \u7684\u591a\u500b\u5be6\u4f8b\u76f8\u95dc\u806f\u3002<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u4e00 <em>\u5ba2\u6236<\/em> \u8a02\u8cfc\u591a\u500b <em>\u8a02\u55ae<\/em>.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p><strong>\u591a\u5c0d\u591a (M:N)<\/strong><\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5be6\u9ad4 A \u7684\u591a\u500b\u5be6\u4f8b\u8207\u5be6\u9ad4 B \u7684\u591a\u500b\u5be6\u4f8b\u76f8\u95dc\u806f\u3002<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u591a\u500b <em>\u5b78\u751f<\/em> \u767b\u8a18\u4fee\u8b80\u591a\u9580 <em>\u8ab2\u7a0b<\/em>.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5728\u8a2d\u8a08\u8cc7\u6599\u5eab\u6642\uff0c\u591a\u5c0d\u591a\u95dc\u4fc2\u901a\u5e38\u900f\u904e\u5f15\u5165\u4e00\u500b\u4e2d\u9593\u8868\u683c\u4f86\u89e3\u6c7a\uff0c\u9019\u500b\u8868\u683c\u901a\u5e38\u7a31\u70ba\u9023\u7d50\u8868\u6216\u95dc\u806f\u8868\u3002\u9019\u6703\u5c07 M:N \u95dc\u4fc2\u62c6\u5206\u6210\u5169\u500b 1:N \u95dc\u4fc2\u3002<\/p>\n<h2>\u7b26\u865f\u98a8\u683c \ud83c\udfa8<\/h2>\n<p>\u6709\u5e7e\u7a2e\u65b9\u5f0f\u53ef\u4ee5\u8996\u89ba\u5316\u5448\u73fe\u5be6\u9ad4\u95dc\u4fc2\u5716\u3002\u96d6\u7136\u80cc\u5f8c\u7684\u908f\u8f2f\u4fdd\u6301\u4e0d\u8b8a\uff0c\u4f46\u7b26\u865f\u6703\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<h3>\u9673\u6c0f\u7b26\u865f<\/h3>\n<ul>\n<li>\n<p><strong>\u5be6\u9ad4\uff1a<\/strong>\u4ee5\u77e9\u5f62\u8868\u793a\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u95dc\u4fc2\uff1a<\/strong>\u4ee5\u83f1\u5f62\u8868\u793a\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5c6c\u6027\uff1a<\/strong>\u4ee5\u9023\u63a5\u5230\u5be6\u9ad4\u7684\u6a62\u5713\u8868\u793a\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u9019\u7a2e\u98a8\u683c\u5c0d\u521d\u5b78\u8005\u975e\u5e38\u6e05\u6670\uff0c\u4f46\u5728\u73fe\u4ee3\u8cc7\u6599\u5eab\u5be6\u4f5c\u5de5\u5177\u4e2d\u8f03\u4e0d\u5e38\u898b\u3002<\/p>\n<h3>\u70cf\u9d09\u8db3\u7b26\u865f<\/h3>\n<ul>\n<li>\n<p><strong>\u5be6\u9ad4\uff1a<\/strong>\u4ee5\u77e9\u5f62\u8868\u793a\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u95dc\u4fc2\uff1a<\/strong>\u4ee5\u9023\u63a5\u5be6\u9ad4\u7684\u7dda\u689d\u8868\u793a\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u57fa\u6578\uff1a<\/strong>\u4ee5\u7dda\u689d\u672b\u7aef\u7684\u7b26\u865f\u8868\u793a\uff08\u4f8b\u5982\uff0c\u7528\u70cf\u9d09\u8db3\u8868\u793a\u300c\u591a\u300d\uff09\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u9019\u662f\u95dc\u4fc2\u578b\u8cc7\u6599\u5eab\u8a2d\u8a08\u7684\u696d\u754c\u6a19\u6e96\uff0c\u56e0\u70ba\u5b83\u7c21\u6f54\u4e14\u6613\u65bc\u95b1\u8b80\u3002<\/p>\n<h2>\u9010\u6b65\u5efa\u7acb\u6d41\u7a0b \ud83d\udee0\ufe0f<\/h2>\n<p>\u5efa\u7acb\u5be6\u9ad4\u95dc\u4fc2\u5716\u4e26\u975e\u4e00\u6b21\u6027\u7684\u4e8b\u4ef6\uff0c\u800c\u662f\u4e00\u500b\u96a8\u8457\u5c08\u6848\u767c\u5c55\u800c\u6f14\u9032\u7684\u904e\u7a0b\u3002\u9075\u5faa\u4ee5\u4e0b\u6b65\u9a5f\uff0c\u4ee5\u78ba\u4fdd\u7a69\u56fa\u7684\u57fa\u790e\u3002<\/p>\n<h3>\u6b65\u9a5f 1\uff1a\u6536\u96c6\u9700\u6c42 \ud83d\udcdd<\/h3>\n<p>\u7e6a\u88fd\u4e4b\u524d\uff0c\u8207\u76f8\u95dc\u4eba\u54e1\u6e9d\u901a\u3002\u4e86\u89e3\u9700\u8981\u6355\u6349\u54ea\u4e9b\u8cc7\u6599\u3002\u63d0\u51fa\u4ee5\u4e0b\u554f\u984c\uff1a<\/p>\n<ul>\n<li>\n<p>\u5fc5\u9808\u8ffd\u8e64\u54ea\u4e9b\u8cc7\u8a0a\uff1f<\/p>\n<\/li>\n<li>\n<p>\u8cc7\u6599\u4fdd\u7559\u65b9\u9762\u662f\u5426\u6709\u4efb\u4f55\u6cd5\u898f\u9650\u5236\uff1f<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528\u8005\u5c07\u5982\u4f55\u641c\u5c0b\u6216\u904e\u6ffe\u9019\u4e9b\u8cc7\u6599\uff1f<\/p>\n<\/li>\n<li>\n<p>\u9019\u4e9b\u8cc7\u6599\u5c07\u7522\u751f\u54ea\u4e9b\u5831\u8868\uff1f<\/p>\n<\/li>\n<\/ul>\n<h3>\u6b65\u9a5f 2\uff1a\u8b58\u5225\u5be6\u9ad4 \ud83c\udfaf<\/h3>\n<p>\u6aa2\u8996\u9700\u6c42\uff0c\u5217\u51fa\u4ee3\u8868\u7368\u7acb\u7269\u4ef6\u7684\u6bcf\u4e00\u500b\u540d\u8a5e\u3002\u5c0d\u65bc\u5716\u66f8\u9928\u7cfb\u7d71\uff0c\u9019\u4e9b\u53ef\u80fd\u5305\u62ec<em>\u66f8\u7c4d<\/em>, <em>\u4f5c\u8005<\/em>, <em>\u6703\u54e1<\/em>\uff0c\u4ee5\u53ca<em>\u501f\u95b1\u7d00\u9304<\/em>\u904e\u6ffe\u6389\u4e0d\u9700\u8981\u5132\u5b58\u7684\u901a\u7528\u8a5e\u5f59\u3002<\/p>\n<h3>\u6b65\u9a5f 3\uff1a\u5b9a\u7fa9\u5c6c\u6027 \ud83d\udd11<\/h3>\n<p>\u91dd\u5c0d\u6bcf\u500b\u5be6\u9ad4\uff0c\u5217\u51fa\u5fc5\u8981\u7684\u7d30\u7bc0\u3002\u52d9\u5fc5\u907f\u514d\u904e\u5ea6\u5efa\u6a21\u3002\u5982\u679c\u67d0\u500b\u6b04\u4f4d\u53ef\u5f9e\u53e6\u4e00\u500b\u6b04\u4f4d\u63a8\u5c0e\u51fa\u4f86\uff0c\u50c5\u5132\u5b58\u4f86\u6e90\u6b04\u4f4d\u3002\u4f8b\u5982\uff0c\u5132\u5b58<em>\u51fa\u751f\u65e5\u671f<\/em> \u800c\u975e <em>\u5e74\u9f61<\/em>.<\/p>\n<h3>\u6b65\u9a5f 4\uff1a\u5efa\u7acb\u95dc\u4fc2 \ud83d\udd04<\/h3>\n<p>\u5728\u5be6\u9ad4\u4e4b\u9593\u7e6a\u88fd\u7dda\u689d\uff0c\u4ee5\u986f\u793a\u5b83\u5011\u5982\u4f55\u9023\u7d50\u3002\u8acb\u554f\uff1a<\/p>\n<ul>\n<li>\n<p>\u6703\u54e1\u6703\u501f\u66f8\u55ce\uff1f<\/p>\n<\/li>\n<li>\n<p>\u4e00\u672c\u66f8\u6703\u6709\u591a\u4f4d\u4f5c\u8005\u55ce\uff1f<\/p>\n<\/li>\n<li>\n<p>\u4f5c\u8005\u662f\u5426\u7368\u7acb\u65bc\u4ed6\u5011\u64b0\u5beb\u7684\u66f8\u7c4d\uff1f<\/p>\n<\/li>\n<\/ul>\n<p>\u5728\u6bcf\u689d\u7dda\u689d\u4e0a\u6a19\u793a\u57fa\u6578\u3002\u78ba\u4fdd\u6bcf\u4e00\u500b\u95dc\u4fc2\u90fd\u662f\u696d\u52d9\u908f\u8f2f\u6240\u5fc5\u9700\u7684\u3002<\/p>\n<h3>\u6b65\u9a5f 5\uff1a\u8cc7\u6599\u6b63\u898f\u5316 \ud83d\udd0d<\/h3>\n<p>\u6b63\u898f\u5316\u53ef\u6e1b\u5c11\u91cd\u8907\u4e26\u63d0\u5347\u8cc7\u6599\u5b8c\u6574\u6027\u3002\u9019\u5305\u62ec\u5c0d\u5c6c\u6027\u548c\u8868\u683c\u9032\u884c\u7d44\u7e54\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u7b2c\u4e00\u6b63\u898f\u5316\u5f62\u5f0f (1NF)\uff1a<\/strong>\u6d88\u9664\u91cd\u8907\u7684\u6b04\u4f4d\uff0c\u4e26\u78ba\u4fdd\u503c\u70ba\u539f\u5b50\u6027\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u7b2c\u4e8c\u6b63\u898f\u5316\u5f62\u5f0f (2NF)\uff1a<\/strong>\u79fb\u9664\u90e8\u5206\u4f9d\u8cf4\uff08\u78ba\u4fdd\u6240\u6709\u5c6c\u6027\u90fd\u4f9d\u8cf4\u65bc\u6574\u500b\u4e3b\u9375\uff09\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u7b2c\u4e09\u6b63\u898f\u5316\u5f62\u5f0f (3NF)\uff1a<\/strong>\u79fb\u9664\u50b3\u905e\u4f9d\u8cf4\uff08\u78ba\u4fdd\u5c6c\u6027\u50c5\u4f9d\u8cf4\u65bc\u4e3b\u9375\uff09\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>\u5e38\u898b\u9677\u9631\uff0c\u61c9\u907f\u514d \u26a0\ufe0f<\/h2>\n<p>\u5373\u4f7f\u662f\u7d93\u9a57\u8c50\u5bcc\u7684\u5de5\u7a0b\u5e2b\u4e5f\u6703\u72af\u932f\u3002\u610f\u8b58\u5230\u5e38\u898b\u932f\u8aa4\uff0c\u53ef\u5927\u5e45\u7bc0\u7701\u5f8c\u7e8c\u6642\u9593\u3002<\/p>\n<h3>1. \u904e\u5ea6\u5efa\u6a21<\/h3>\n<p>\u70ba\u4e86\u8ffd\u6c42\u5b8c\u7f8e\u800c\u5275\u5efa\u592a\u591a\u8868\u683c\uff0c\u6703\u4f7f\u7cfb\u7d71\u8b8a\u5f97\u50f5\u5316\u3002\u61c9\u5f9e\u7c21\u55ae\u958b\u59cb\u3002\u5982\u679c\u67d0\u5f35\u8868\u683c\u5f88\u5c11\u88ab\u4f7f\u7528\uff0c\u53ef\u80fd\u6839\u672c\u4e0d\u9700\u8981\u3002<\/p>\n<h3>2. \u6a21\u7cca\u7684\u95dc\u4fc2<\/h3>\n<p>\u4e0d\u8981\u7559\u4e0b\u6c92\u6709\u57fa\u6578\u6a19\u8a18\u7684\u7dda\u689d\u3002\u6a21\u7cca\u6027\u6703\u5c0e\u81f4\u5be6\u4f5c\u6642\u7522\u751f\u6df7\u6dc6\u3002\u52d9\u5fc5\u660e\u78ba\u6307\u51fa\u95dc\u4fc2\u662f\u53ef\u9078\u9084\u662f\u5fc5\u586b\u3002<\/p>\n<h3>3. \u5ffd\u7565\u8cc7\u6599\u985e\u578b<\/h3>\n<p>\u96d6\u7136\u5716\u8868\u8457\u91cd\u65bc\u7d50\u69cb\uff0c\u4f46\u4ecd\u9700\u8003\u616e\u8cc7\u6599\u985e\u578b\u3002\u5c07\u96fb\u8a71\u865f\u78bc\u5132\u5b58\u70ba\u6587\u5b57\u800c\u975e\u6578\u5b57\uff0c\u65e5\u5f8c\u53ef\u80fd\u5c0e\u81f4\u9a57\u8b49\u554f\u984c\u3002<\/p>\n<h3>4. \u9806\u74b0\u4f9d\u8cf4<\/h3>\n<p>\u907f\u514d Entity A \u4f9d\u8cf4 B\uff0c\u800c B \u53c8\u4f9d\u8cf4 A \u7684\u60c5\u6cc1\u3002\u9019\u6703\u5728\u8cc7\u6599\u63d2\u5165\u6642\u9020\u6210\u6b7b\u7d50\uff0c\u4e26\u4f7f\u67e5\u8a62\u8b8a\u5f97\u8907\u96dc\u3002<\/p>\n<h3>5. \u547d\u540d\u4e0d\u4e00\u81f4<\/h3>\n<p>\u5728\u6574\u500b\u5716\u8868\u4e2d\u4f7f\u7528\u4e00\u81f4\u7684\u547d\u540d\u898f\u7bc4\u3002\u5982\u679c\u4f60\u5728\u67d0\u8655\u4f7f\u7528<em>UserID<\/em>\uff0c\u5c31\u4e0d\u61c9\u5728\u53e6\u4e00\u8655\u6539\u70ba<em>User_ID<\/em>\u3002<\/p>\n<h2>\u53ef\u7dad\u8b77\u6027\u7684\u6700\u4f73\u5be6\u52d9 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\ud83d\udc41\ufe0f<\/h2>\n<p>\u5728\u6700\u7d42\u78ba\u5b9a\u524d\uff0c\u8acb\u5c0d\u5716\u793a\u9032\u884c\u81ea\u6211\u5be9\u67e5\u3002<\/p>\n<table style=\"min-width: 50px;\">\n<colgroup>\n<col style=\"min-width: 25px;\"\/>\n<col style=\"min-width: 25px;\"\/><\/colgroup>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u6aa2\u67e5\u6e05\u55ae\u9805\u76ee<\/p>\n<\/th>\n<th colspan=\"1\" rowspan=\"1\">\n<p>\u901a\u904e\/\u672a\u901a\u904e<\/p>\n<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6240\u6709\u5be6\u9ad4\u662f\u5426\u90fd\u662f\u55ae\u6578\u540d\u8a5e\uff1f<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u2610<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6bcf\u500b\u95dc\u4fc2\u662f\u5426\u90fd\u6a19\u8a3b\u4e86\u57fa\u6578\uff1f<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u2610<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u662f\u5426\u5b58\u5728\u5faa\u74b0\u4f9d\u8cf4\uff1f<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u2610<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u6bcf\u5f35\u8868\u683c\u7684\u4e3b\u9375\u662f\u5426\u90fd\u5df2\u5b9a\u7fa9\uff1f<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u2610<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u5916\u9375\u5728\u5404\u8868\u683c\u9593\u662f\u5426\u4e00\u81f4\uff1f<\/p>\n<\/td>\n<td colspan=\"1\" rowspan=\"1\">\n<p>\u2610<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u8cc7\u6599\u8a2d\u8a08\u7684\u6700\u5f8c\u60f3\u6cd5 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This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u5f9e\u7a7a\u767d\u9801\u9762\u5230ERD\uff1a\u65b0\u5de5\u7a0b\u5e2b\u6307\u5357<\/title>\n<meta name=\"description\" content=\"\u5b78\u7fd2\u5f9e\u96f6\u958b\u59cb\u8a2d\u8a08\u5be6\u9ad4\u95dc\u4fc2\u5716\u3002\u4e00\u4efd\u9010\u6b65\u6307\u5357\uff0c\u5c08\u70ba\u65b0\u5de5\u7a0b\u5e2b\u8a2d\u8a08\uff0c\u6db5\u84cb\u5be6\u9ad4\u3001\u95dc\u4fc2\u8207\u898f\u7bc4\u5316\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.viz-read.com\/tw\/from-blank-page-to-erd-guide-for-new-engineers\/\" \/>\n<meta property=\"og:locale\" content=\"zh_TW\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5f9e\u7a7a\u767d\u9801\u9762\u5230ERD\uff1a\u65b0\u5de5\u7a0b\u5e2b\u6307\u5357\" \/>\n<meta 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