{"id":1650,"date":"2026-04-08T03:43:39","date_gmt":"2026-04-08T03:43:39","guid":{"rendered":"https:\/\/www.viz-note.com\/cn\/case-study-disaster-recovery-flawed-erd\/"},"modified":"2026-04-08T03:43:39","modified_gmt":"2026-04-08T03:43:39","slug":"case-study-disaster-recovery-flawed-erd","status":"publish","type":"post","link":"https:\/\/www.viz-note.com\/cn\/case-study-disaster-recovery-flawed-erd\/","title":{"rendered":"\u707e\u96be\u6062\u590d\u6848\u4f8b\u7814\u7a76\uff1a\u4e00\u4e2a\u6709\u7f3a\u9677\u7684\u5b9e\u4f53\u5173\u7cfb\u56fe\u8ba9\u6211\u4eec\u635f\u5931\u4e86\u4e09\u4e2a\u5c0f\u65f6"},"content":{"rendered":"<p>\u707e\u96be\u6062\u590d\u5f88\u5c11\u5173\u4e4e\u707e\u96be\u672c\u8eab\uff1b\u5b83\u5173\u4e4e\u6211\u4eec\u5728\u98ce\u66b4\u6765\u4e34\u524d\u6784\u5efa\u7684\u7ed3\u6784\u7684\u8106\u5f31\u6027\u3002\u5728\u6211\u4eec\u6700\u8fd1\u7684\u4e8b\u4ef6\u4e2d\uff0c\u6570\u636e\u5e93\u6a21\u5f0f\u8bbe\u8ba1\u4e2d\u7684\u4e00\u4e2a\u770b\u4f3c\u5fae\u5c0f\u7684\u758f\u5ffd\uff0c\u5374\u6210\u4e86\u6574\u4e2a\u6062\u590d\u8fc7\u7a0b\u7684\u74f6\u9888\u3002\u7f6a\u9b41\u7978\u9996\u662f\u4e00\u4e2a\u672a\u80fd\u51c6\u786e\u53cd\u6620\u751f\u4ea7\u73af\u5883\u6570\u636e\u4f9d\u8d56\u5173\u7cfb\u7684\u5b9e\u4f53\u5173\u7cfb\u56fe\uff08ERD\uff09\u3002\u672c\u5e94\u53ea\u9700\u56db\u5341\u4e94\u5206\u949f\u7684\u64cd\u4f5c\uff0c\u5374\u6f14\u53d8\u4e3a\u957f\u8fbe\u4e09\u5c0f\u65f6\u7684\u624b\u52a8\u5e72\u9884\u548c\u6570\u636e\u6821\u9a8c\u3002 \ud83d\udd70\ufe0f<\/p>\n<p>\u672c\u6587\u8be6\u7ec6\u5206\u6790\u4e86\u6b64\u6b21\u5931\u8d25\u7684\u6280\u672f\u539f\u56e0\uff0c\u5bfc\u81f4\u5ef6\u8fdf\u7684\u5177\u4f53\u6a21\u5f0f\u4e0d\u4e00\u81f4\u4e4b\u5904\uff0c\u4ee5\u53ca\u6211\u4eec\u4e3a\u9632\u6b62\u518d\u6b21\u53d1\u751f\u800c\u5b9e\u65bd\u7684\u6d41\u7a0b\u6539\u8fdb\u3002\u6211\u4eec\u5c06\u63a2\u8ba8\u6570\u636e\u5b8c\u6574\u6027\u5728\u591a\u5927\u7a0b\u5ea6\u4e0a\u4f9d\u8d56\u4e8e\u8bbe\u8ba1\u6587\u6863\u7684\u51c6\u786e\u6027\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u4ee3\u7801\u672c\u8eab\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Charcoal sketch infographic illustrating a disaster recovery case study: how a flawed Entity Relationship Diagram (ERD) caused a 3-hour database restoration delay, showing timeline, schema flaws (orphaned foreign keys, implicit join tables, nullability constraints), cost analysis, and best practices for ERD maintenance and data integrity\" decoding=\"async\" src=\"https:\/\/www.viz-note.com\/wp-content\/uploads\/2026\/04\/disaster-recovery-erd-case-study-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>\u5b9e\u4f53\u5173\u7cfb\u56fe\u5728\u6570\u636e\u97e7\u6027\u4e2d\u7684\u5173\u952e\u4f5c\u7528 \ud83d\udee1\ufe0f<\/h2>\n<p>\u5b9e\u4f53\u5173\u7cfb\u56fe\u662f\u6570\u5b57\u57fa\u7840\u8bbe\u65bd\u7684\u84dd\u56fe\u3002\u5b83\u4eec\u63cf\u7ed8\u4e86\u8868\u3001\u5b57\u6bb5\u3001\u4e3b\u952e\u548c\u5916\u952e\uff0c\u5b9a\u4e49\u4e86\u6570\u636e\u5982\u4f55\u8fde\u63a5\u548c\u6d41\u52a8\u3002\u5f53\u707e\u96be\u53d1\u751f\u65f6\uff0c\u8fd9\u4e9b\u56fe\u8868\u662f\u5de5\u7a0b\u5e08\u5c1d\u8bd5\u6062\u590d\u7cfb\u7edf\u72b6\u6001\u65f6\u7684\u9996\u8981\u53c2\u8003\u3002\u5982\u679c\u5730\u56fe\u9519\u8bef\uff0c\u65c5\u7a0b\u5c31\u4f1a\u5ef6\u8bef\u3002<\/p>\n<p>\u5728\u707e\u96be\u6062\u590d\u7684\u80cc\u666f\u4e0b\uff0cERD\u5177\u6709\u4e09\u4e2a\u4e3b\u8981\u529f\u80fd\uff1a<\/p>\n<ul>\n<li><strong>\u9a8c\u8bc1\uff1a<\/strong> \u5b83\u786e\u8ba4\u6062\u590d\u540e\u7684\u6a21\u5f0f\u4e0e\u5e94\u7528\u7a0b\u5e8f\u7684\u9884\u671f\u72b6\u6001\u4e00\u81f4\u3002<\/li>\n<li><strong>\u4f9d\u8d56\u5173\u7cfb\u6620\u5c04\uff1a<\/strong> \u5b83\u8bc6\u522b\u51fa\u54ea\u4e9b\u8868\u4f9d\u8d56\u4e8e\u5176\u4ed6\u8868\uff0c\u4ece\u800c\u51b3\u5b9a\u6062\u590d\u7684\u987a\u5e8f\u3002<\/li>\n<li><strong>\u7ea6\u675f\u9a8c\u8bc1\uff1a<\/strong> \u5b83\u786e\u4fdd\u5728\u5bfc\u5165\u8fc7\u7a0b\u4e2d\u6b63\u786e\u5e94\u7528\u53c2\u7167\u5b8c\u6574\u6027\u89c4\u5219\u3002<\/li>\n<\/ul>\n<p>\u5f53ERD\u4e0e\u5b9e\u9645\u7684\u6570\u636e\u5e93\u914d\u7f6e\u4e0d\u4e00\u81f4\u65f6\uff0c\u6062\u590d\u811a\u672c\u4f1a\u5728\u9a8c\u8bc1\u9636\u6bb5\u5931\u8d25\u3002\u8fd9\u8feb\u4f7f\u5de5\u7a0b\u5e08\u505c\u6b62\u64cd\u4f5c\uff0c\u8fdb\u884c\u8c03\u67e5\uff0c\u5e76\u624b\u52a8\u4fee\u8865\u6a21\u5f0f\u3002\u6b63\u662f\u8fd9\u4e2a\u624b\u52a8\u6b65\u9aa4\u5bfc\u81f4\u4e86\u65f6\u95f4\u7684\u635f\u5931\u3002 \u23f3<\/p>\n<h2>\u4e8b\u4ef6\u56de\u987e\uff1a\u4e00\u7cfb\u5217\u9519\u8bef\u7684\u65f6\u95f4\u7ebf \ud83d\udcc9<\/h2>\n<p>\u6b64\u6b21\u4e8b\u4ef6\u59cb\u4e8e\u4e3b\u6570\u636e\u5b58\u50a8\u7684\u6545\u969c\u3002\u4e00\u6b21\u707e\u96be\u6027\u7684\u786c\u4ef6\u9519\u8bef\u89e6\u53d1\u4e86\u5411\u6211\u4eec\u5907\u7528\u73af\u5883\u7684\u6545\u969c\u8f6c\u79fb\u3002\u6807\u51c6\u64cd\u4f5c\u6d41\u7a0b\u662f\u542f\u52a8\u6062\u590d\u811a\u672c\uff0c\u8be5\u811a\u672c\u4f9d\u8d56\u4e8e\u6211\u4eec\u6587\u6863\u4ed3\u5e93\u4e2d\u5b58\u50a8\u7684\u9759\u6001ERD\u7248\u672c\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u6545\u969c\u7684\u65f6\u95f4\u7ebf\uff1a<\/p>\n<ul>\n<li><strong>00:00<\/strong> \u2013 \u68c0\u6d4b\u5230\u4e3b\u7cfb\u7edf\u6545\u969c\u3002\u8b66\u62a5\u89e6\u53d1\u4e8b\u4ef6\u54cd\u5e94\u3002<\/li>\n<li><strong>00:05<\/strong> \u2013 \u5de5\u7a0b\u56e2\u961f\u8fc5\u901f\u96c6\u7ed3\u3002\u5df2\u6388\u4e88\u5bf9\u5907\u7528\u73af\u5883\u7684\u8bbf\u95ee\u6743\u9650\u3002<\/li>\n<li><strong>00:15<\/strong> \u2013 \u6839\u636e\u6587\u6863\u4e2d\u7684ERD\u542f\u52a8\u6062\u590d\u811a\u672c\u3002<\/li>\n<li><strong>00:25<\/strong> \u2013 \u811a\u672c\u505c\u6b62\u3002\u68c0\u6d4b\u5230\u5916\u952e\u7ea6\u675f\u8fdd\u89c4\u3002<\/li>\n<li><strong>00:30<\/strong> \u2013 \u8c03\u67e5\u5f00\u59cb\u3002\u53d1\u73b0ERD\u4e0e\u5b9e\u65f6\u6a21\u5f0f\u4e4b\u95f4\u5b58\u5728\u5dee\u5f02\u3002<\/li>\n<li><strong>01:30<\/strong> \u2013 \u5f00\u59cb\u6a21\u5f0f\u4fee\u8865\u548c\u624b\u52a8\u6570\u636e\u6821\u9a8c\u3002<\/li>\n<li><strong>03:00<\/strong> \u2013 \u7cfb\u7edf\u6062\u590d\u81f3\u6b63\u5e38\u8fd0\u884c\u72b6\u6001\u3002<\/li>\n<\/ul>\n<p>\u4e09\u4e2a\u5c0f\u65f6\u7684\u5ef6\u8fdf\u5e76\u975e\u7531\u7f51\u7edc\u5ef6\u8fdf\u6216\u786c\u4ef6\u7f13\u6162\u5f15\u8d77\u3002\u5176\u539f\u56e0\u662f\u8bbe\u8ba1\u6587\u6863\u4e0e\u5b9e\u9645\u7269\u7406\u73b0\u5b9e\u4e4b\u95f4\u7684\u903b\u8f91\u5dee\u8ddd\u3002\ud83e\udde9<\/p>\n<h2>\u5df2\u8bc6\u522b\u7684\u5177\u4f53\u6a21\u5f0f\u7f3a\u9677 \ud83d\udd0d<\/h2>\n<p>\u5728\u5c06\u5b9e\u65f6\u6570\u636e\u5e93\u4e0eERD\u8fdb\u884c\u6bd4\u5bf9\u540e\uff0c\u6211\u4eec\u53d1\u73b0\u4e86\u4e09\u4e2a\u5173\u952e\u5dee\u5f02\u3002\u8fd9\u4e9b\u5e76\u975e\u8bed\u6cd5\u9519\u8bef\uff0c\u800c\u662f\u903b\u8f91\u9057\u6f0f\uff0c\u53ea\u6709\u5728\u7cfb\u7edf\u5c1d\u8bd5\u5f3a\u5236\u5b9e\u65bd\u5173\u7cfb\u65f6\u624d\u663e\u73b0\u51fa\u6765\u3002<\/p>\n<h3>1. \u5b64\u7acb\u7684\u5916\u952e<\/h3>\n<p>ERD \u63cf\u8ff0\u4e86\u201c<code>\u8ba2\u5355<\/code>\u201d\u4e0e\u201c<code>\u8ba2\u5355\u9879<\/code>\u201d\u4e4b\u95f4\u5b58\u5728\u4e25\u683c\u7684 \u4e00\u5bf9\u591a \u5173\u7cfb\u3002\u7136\u800c\uff0c\u5b9e\u9645\u6570\u636e\u5e93\u4e2d\u5305\u542b\u9057\u7559\u6570\u636e\uff0c\u5176\u4e2d\u201c<code>\u8ba2\u5355\u9879<\/code>\u201d\u5b58\u5728\uff0c\u5374\u6ca1\u6709\u5bf9\u5e94\u7684\u201c<code>\u8ba2\u5355<\/code>\u201d\u8bb0\u5f55\uff0c\u8fd9\u662f\u7531\u4e8e\u4e4b\u524d\u672a\u5f3a\u5236\u7ea6\u675f\u7684\u8fc1\u79fb\u6240\u81f4\u3002ERD \u672a\u8003\u8651\u8fd9\u79cd\u5b64\u7acb\u72b6\u6001\u3002\u5f53\u6062\u590d\u811a\u672c\u5c1d\u8bd5\u91cd\u65b0\u5efa\u7acb\u5916\u952e\u65f6\uff0c\u6570\u636e\u5e93\u62d2\u7edd\u4e86\u6570\u636e\uff0c\u56e0\u4e3a\u7236\u8bb0\u5f55\u7f3a\u5931\uff0c\u6216\u7ea6\u675f\u7684\u5f3a\u5236\u65b9\u5f0f\u4e0e\u6587\u6863\u6240\u8ff0\u4e0d\u540c\u3002<\/p>\n<h3>2. \u9690\u5f0f\u8fde\u63a5\u8868<\/h3>\n<p>ERD \u4e2d\u5c06\u591a\u5bf9\u591a\u5173\u7cfb\u8868\u793a\u4e3a\u4e24\u4e2a\u8868\u4e4b\u95f4\u7684\u76f4\u63a5\u8fde\u63a5\u3002\u5728\u7269\u7406\u5b9e\u73b0\u4e2d\uff0c\u8fd9\u901a\u8fc7\u4e00\u4e2a\u8fde\u63a5\u8868\u6765\u5904\u7406\u3002\u6062\u590d\u903b\u8f91\u671f\u671b\u7684\u662f\u76f4\u63a5\u8fde\u63a5\uff0c\u5e76\u8bd5\u56fe\u5c06\u6570\u636e\u63d2\u5165\u9519\u8bef\u7684\u5217\u4e2d\u3002\u8fd9\u5bfc\u81f4\u4e86\u4e00\u7cfb\u5217\u7c7b\u578b\u4e0d\u5339\u914d\u9519\u8bef\uff0c\u9700\u8981\u624b\u52a8\u4fee\u6539\u6a21\u5f0f\u3002<\/p>\n<h3>3. \u53ef\u7a7a\u6027\u7ea6\u675f<\/h3>\n<p>ERD \u8868\u660e\u591a\u4e2a\u5b57\u6bb5\u662f\u53ef\u9009\u7684\uff08\u53ef\u4e3a\u7a7a\uff09\u3002\u7136\u800c\uff0c\u751f\u4ea7\u6a21\u5f0f\u968f\u7740\u65f6\u95f4\u63a8\u79fb\u5df2\u66f4\u65b0\uff0c\u4e3a\u4fdd\u8bc1\u6570\u636e\u8d28\u91cf\u800c\u5f3a\u5236\u8981\u6c42\u975e\u7a7a\u503c\u3002ERD \u672a\u66f4\u65b0\u4ee5\u53cd\u6620\u8fd9\u4e00\u53d8\u5316\u3002\u5728\u6062\u590d\u8fc7\u7a0b\u4e2d\uff0c\u811a\u672c\u8bd5\u56fe\u5c06 NULL \u503c\u63d2\u5165\u975e\u7a7a\u5217\uff0c\u5bfc\u81f4\u4e8b\u52a1\u7acb\u5373\u56de\u6eda\u3002<\/p>\n<p>\u8fd9\u4e9b\u5dee\u5f02\u7a81\u663e\u4e86\u6280\u672f\u6587\u6863\u4e2d\u7684\u4e00\u4e2a\u5e38\u89c1\u95ee\u9898\uff1a<strong>\u6587\u6863\u6f02\u79fb<\/strong>\u3002\u968f\u7740\u7cfb\u7edf\u6f14\u8fdb\uff0c\u6587\u6863\u53d8\u5f97\u8fc7\u65f6\uff0c\u4ece\u800c\u4ea7\u751f\u4e00\u79cd\u865a\u5047\u7684\u5b89\u5168\u611f\u3002<\/p>\n<h2>\u6210\u672c\u5206\u6790\uff1a\u65f6\u95f4 vs. \u51c6\u786e\u6027 \ud83d\udcb0<\/h2>\n<p>\u4e09\u5c0f\u65f6\u505c\u673a\u7684\u8d22\u52a1\u5f71\u54cd\u663e\u8457\uff0c\u4f46\u58f0\u8a89\u635f\u5931\u66f4\u9ad8\u3002\u4ee5\u4e0b\u662f\u5ef6\u8fdf\u671f\u95f4\u6d88\u8017\u7684\u8d44\u6e90\u660e\u7ec6\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u8d44\u6e90<\/th>\n<th>\u6d88\u8017\u65f6\u95f4<\/th>\n<th>\u5f71\u54cd<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u9ad8\u7ea7\u5de5\u7a0b\u5e08<\/td>\n<td>3 \u5c0f\u65f6<\/td>\n<td>\u9ad8\u4f18\u5148\u7ea7\u5de5\u4f5c\u88ab\u4ece\u5f00\u53d1\u4e2d\u8f6c\u79fb<\/td>\n<\/tr>\n<tr>\n<td>\u7cfb\u7edf\u505c\u673a<\/td>\n<td>3 \u5c0f\u65f6<\/td>\n<td>\u670d\u52a1\u53ef\u7528\u6027\u964d\u4f4e\u4e8615%<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u6838\u5bf9<\/td>\n<td>1.5\u5c0f\u65f6<\/td>\n<td>\u9700\u8981\u624b\u52a8\u9a8c\u8bc1<\/td>\n<\/tr>\n<tr>\n<td>\u6587\u6863\u66f4\u65b0<\/td>\n<td>0.5\u5c0f\u65f6<\/td>\n<td>\u4e8b\u4ef6\u540e\u8ddf\u8fdb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8be5\u8868\u683c\u8868\u660e\uff0c\u5927\u90e8\u5206\u6210\u672c\u5e76\u975e\u6765\u81ea\u6062\u590d\u64cd\u4f5c\u672c\u8eab\uff0c\u800c\u662f\u6765\u81ea<em>\u7ea0\u6b63<\/em>\u6062\u590d\u8fc7\u7a0b\u7684\u7ea0\u6b63\u3002\u5982\u679cERD\u51c6\u786e\u65e0\u8bef\uff0c\u6062\u590d\u8fc7\u7a0b\u672c\u53ef\u65e0\u7f1d\u8fdb\u884c\u3002<\/p>\n<h2>\u6280\u672f\u5206\u6790\uff1a\u811a\u672c\u5931\u8d25\u7684\u539f\u56e0 \ud83d\udee0\ufe0f<\/h2>\n<p>\u4e3a\u4e86\u7406\u89e3\u9519\u8bef\u7684\u4e25\u91cd\u6027\uff0c\u6211\u4eec\u5fc5\u987b\u67e5\u770b\u6062\u590d\u811a\u672c\u4e0e\u6570\u636e\u5e93\u5f15\u64ce\u7684\u4ea4\u4e92\u65b9\u5f0f\u3002\u8be5\u811a\u672c\u9075\u5faa\u4e86\u4e00\u4e2a\u6807\u51c6\u6d41\u7a0b\uff1a<\/p>\n<ol>\n<li>\u6839\u636eERD\u5b9a\u4e49\u521b\u5efa\u8868\u3002<\/li>\n<li>\u5e94\u7528\u7ea6\u675f\uff08\u4e3b\u952e\u3001\u5916\u952e\uff09\u3002<\/li>\n<p>3. \u63d2\u5165\u6570\u636e\u3002<\/p>\n<li>\u9a8c\u8bc1\u5b8c\u6574\u6027\u3002<\/li>\n<\/ol>\n<p>\u5f53\u811a\u672c\u6267\u884c\u5230\u7b2c2\u6b65\u65f6\uff0c\u5b83\u8bd5\u56fe\u521b\u5efa\u4e00\u4e2a\u5916\u952e\u7ea6\u675f\uff0c\u5c06<code>\u8868A<\/code>\u8fde\u63a5\u5230<code>\u8868B<\/code>\u3002\u6570\u636e\u5e93\u5f15\u64ce\u626b\u63cf\u4e86<code>\u8868B<\/code>\u4e2d\u7684\u73b0\u6709\u6570\u636e\u3002\u5b83\u53d1\u73b0\u4e86\u4e00\u4e9b\u8fdd\u53cd\u7ea6\u675f\u7684\u8bb0\u5f55\uff0c\u56e0\u4e3a\u7f3a\u5c11\u7236\u952e\u3002\u7531\u4e8e\u811a\u672c\u88ab\u8bbe\u8ba1\u4e3a\u5e42\u7b49\u4e14\u5b89\u5168\uff0c\u56e0\u6b64\u9009\u62e9\u505c\u6b62\u800c\u975e\u7834\u574f\u6570\u636e\u3002\u8fd9\u4e00\u5b89\u5168\u7279\u6027\u867d\u7136\u6709\u5229\u4e8e\u6570\u636e\u5b8c\u6574\u6027\uff0c\u5374\u6210\u4e3a\u4e86\u6062\u590d\u65f6\u95f4\u7ebf\u7684\u963b\u788d\u3002<\/p>\n<p>\u5728<code>\u8868B<\/code>\u7684\u6570\u636e\u88ab\u6e05\u7406\u4e4b\u524d\uff0c\u811a\u672c\u65e0\u6cd5\u7ee7\u7eed\u3002\u6e05\u7406\u6570\u636e\u9700\u8981\uff1a<\/p>\n<ul>\n<li>\u8bc6\u522b\u5b64\u7acb\u8bb0\u5f55\u3002<\/li>\n<li>\u51b3\u5b9a\u662f\u5220\u9664\u5b83\u4eec\uff0c\u8fd8\u662f\u521b\u5efa\u865a\u62df\u7236\u8bb0\u5f55\u3002<\/li>\n<li>\u624b\u52a8\u6267\u884c\u6e05\u7406\u64cd\u4f5c\u3002<\/li>\n<li>\u91cd\u65b0\u8fd0\u884c\u7ea6\u675f\u521b\u5efa\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e2a\u94fe\u6761\u4e2d\u7684\u6bcf\u4e00\u6b65\u90fd\u4f1a\u589e\u52a0\u65f6\u95f4\u3002ERD\u5e94\u5728\u8bbe\u8ba1\u9636\u6bb5\u5c31\u6807\u8bb0\u51fa\u5b64\u7acb\u6570\u636e\u7684\u6f5c\u5728\u98ce\u9669\uff0c\u4ece\u800c\u4fc3\u4f7f\u5236\u5b9a\u6570\u636e\u8fc1\u79fb\u7b56\u7565\uff0c\u800c\u4e0d\u662f\u7b80\u5355\u7684\u6a21\u5f0f\u590d\u5236\u3002<\/p>\n<h2>\u7ecf\u9a8c\u6559\u8bad\uff1a\u5f3a\u5316\u6a21\u5f0f\u751f\u547d\u5468\u671f \ud83d\udd04<\/h2>\n<p>\u4e8b\u4ef6\u53d1\u751f\u540e\uff0c\u6211\u4eec\u542f\u52a8\u4e86\u5bf9\u6a21\u5f0f\u7ba1\u7406\u5b9e\u8df5\u7684\u4e25\u683c\u5ba1\u67e5\u3002\u6211\u4eec\u610f\u8bc6\u5230\uff0c\u4ec5\u4f9d\u8d56\u9759\u6001\u6587\u6863\u8fdb\u884c\u707e\u96be\u6062\u590d\u662f\u4e0d\u591f\u7684\u3002\u6211\u4eec\u9700\u8981\u4e00\u79cd\u52a8\u6001\u7684\u3001\u7248\u672c\u63a7\u5236\u7684\u6a21\u5f0f\u8bbe\u8ba1\u65b9\u6cd5\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u6b64\u6b21\u4e8b\u4ef6\u7684\u5173\u952e\u6559\u8bad\uff1a<\/p>\n<ul>\n<li><strong>\u6587\u6863\u5373\u4ee3\u7801\uff1a<\/strong> ERD \u4e0d\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u4ea7\u7269\uff1b\u5b83\u662f\u4ee3\u7801\u5e93\u7684\u4e00\u90e8\u5206\u3002\u5b83\u5fc5\u987b\u50cf\u5e94\u7528\u903b\u8f91\u4e00\u6837\uff0c\u7ecf\u5386\u76f8\u540c\u7684\u7248\u672c\u63a7\u5236\u548c\u5ba1\u67e5\u6d41\u7a0b\u3002<\/li>\n<li><strong>\u6a21\u5f0f\u6f02\u79fb\u68c0\u6d4b\uff1a<\/strong> \u6211\u4eec\u5b9e\u65bd\u4e86\u81ea\u52a8\u5316\u5de5\u5177\uff0c\u5c06\u5b9e\u65f6\u6570\u636e\u5e93\u6a21\u5f0f\u4e0e\u7248\u672c\u5316\u7684ERD\u8fdb\u884c\u6bd4\u5bf9\u3002\u4efb\u4f55\u504f\u5dee\u90fd\u4f1a\u7acb\u5373\u89e6\u53d1\u8b66\u62a5\u3002<\/li>\n<li><strong>\u6062\u590d\u6d4b\u8bd5\uff1a<\/strong> \u6211\u4eec\u73b0\u5728\u6bcf\u5b63\u5ea6\u5728\u6c99\u7bb1\u73af\u5883\u4e2d\u8fdb\u884c\u6062\u590d\u6f14\u7ec3\u3002\u8fd9\u786e\u4fdd\u4e86ERD\u80fd\u51c6\u786e\u53cd\u6620\u6062\u590d\u8def\u5f84\u3002<\/li>\n<li><strong>\u7ea6\u675f\u653e\u5bbd\uff1a<\/strong> \u6211\u4eec\u8c03\u6574\u4e86\u6062\u590d\u811a\u672c\uff0c\u4f7f\u5176\u5728\u521d\u59cb\u6570\u636e\u52a0\u8f7d\u671f\u95f4\u4e34\u65f6\u7981\u7528\u5916\u952e\u7ea6\u675f\uff0c\u4ec5\u5728\u6240\u6709\u6570\u636e\u9a8c\u8bc1\u5b8c\u6210\u540e\u624d\u91cd\u65b0\u542f\u7528\u3002<\/li>\n<\/ul>\n<h2>ERD\u7ef4\u62a4\u7684\u6700\u4f73\u5b9e\u8df5 \ud83d\udcdd<\/h2>\n<p>\u4e3a\u9632\u6b62\u672a\u6765\u518d\u6b21\u51fa\u73b0\u5ef6\u8fdf\uff0c\u6211\u4eec\u5236\u5b9a\u4e86\u4e00\u5957\u7ef4\u62a4\u5b9e\u4f53\u5173\u7cfb\u56fe\u7684\u6700\u4f73\u5b9e\u8df5\u3002\u8fd9\u4e9b\u6b65\u9aa4\u786e\u4fdd\u84dd\u56fe\u5728\u6574\u4e2a\u7cfb\u7edf\u751f\u547d\u5468\u671f\u4e2d\u59cb\u7ec8\u4fdd\u6301\u6709\u6548\u3002<\/p>\n<h3>1. \u56fe\u8868\u7684\u7248\u672c\u63a7\u5236<\/h3>\n<p>\u5c06ERD\u6587\u4ef6\u4e0e\u6e90\u4ee3\u7801\u5b58\u50a8\u5728\u540c\u4e00\u4e2a\u4ee3\u7801\u4ed3\u5e93\u4e2d\u3002\u6bcf\u6b21\u53d1\u5e03\u90fd\u7528\u5bf9\u5e94\u7684\u56fe\u8868\u7248\u672c\u8fdb\u884c\u6807\u8bb0\u3002\u8fd9\u4f7f\u5f97\u5de5\u7a0b\u5e08\u53ef\u4ee5\u5728\u4efb\u4f55\u65f6\u95f4\u70b9\u83b7\u53d6\u6a21\u5f0f\u7684\u7cbe\u786e\u72b6\u6001\u3002<\/p>\n<h3>2. \u81ea\u52a8\u5316\u751f\u6210<\/h3>\n<p>\u5c3d\u53ef\u80fd\u4ece\u6570\u636e\u5e93\u6a21\u5f0f\u76f4\u63a5\u751f\u6210ERD\uff0c\u800c\u4e0d\u662f\u624b\u52a8\u7ed8\u5236\u3002\u8fd9\u53ef\u4ee5\u51cf\u5c11\u4eba\u4e3a\u9519\u8bef\u7684\u53d1\u751f\uff0c\u5e76\u786e\u4fdd\u56fe\u8868\u59cb\u7ec8\u4e0e\u5b9e\u9645\u60c5\u51b5\u4e00\u81f4\u3002<\/p>\n<h3>3. \u5b9a\u671f\u5ba1\u8ba1<\/h3>\n<p>\u6bcf\u5b63\u5ea6\u5b89\u6392\u4e00\u6b21ERD\u5ba1\u8ba1\u3002\u5c06\u56fe\u8868\u4e0e\u751f\u4ea7\u73af\u5883\u8fdb\u884c\u6bd4\u5bf9\u3002\u8bb0\u5f55\u4efb\u4f55\u5728\u6807\u51c6\u90e8\u7f72\u6d41\u7a0b\u4e4b\u5916\u505a\u51fa\u7684\u66f4\u6539\u3002<\/p>\n<h3>4. \u5305\u542b\u6570\u636e\u8fc1\u79fb\u8bf4\u660e<\/h3>\n<p>ERD\u4e0d\u5e94\u4ec5\u5c55\u793a\u8868\uff0c\u8fd8\u5e94\u5c55\u793a\u6570\u636e\u7684\u5386\u53f2\u3002\u7528\u6ce8\u91ca\u6807\u6ce8\u53ef\u80fd\u6210\u4e3a\u5b64\u7acb\u6216\u9057\u7559\u6570\u636e\u7684\u90e8\u5206\u3002\u8fd9\u80fd\u8ba9\u6062\u590d\u56e2\u961f\u9884\u671f\u5230\u5f02\u5e38\u60c5\u51b5\u3002<\/p>\n<h3>5. \u5728\u51b2\u523a\u89c4\u5212\u4e2d\u8fdb\u884c\u5ba1\u67e5<\/h3>\n<p>\u5f53\u65b0\u529f\u80fd\u9700\u8981\u6570\u636e\u5e93\u53d8\u66f4\u65f6\uff0cERD\u5fc5\u987b\u5728\u540c\u4e00\u5de5\u5355\u4e2d\u66f4\u65b0\u3002\u4e0d\u5141\u8bb8\u5728\u6ca1\u6709\u76f8\u5e94\u56fe\u8868\u66f4\u65b0\u7684\u60c5\u51b5\u4e0b\u90e8\u7f72\u6a21\u5f0f\u53d8\u66f4\u3002<\/p>\n<h2>\u6280\u672f\u9519\u8bef\u4e2d\u7684\u4eba\u4e3a\u56e0\u7d20 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