{"id":135,"date":"2026-04-01T13:46:26","date_gmt":"2026-04-01T13:46:26","guid":{"rendered":"https:\/\/www.go-notes.com\/cn\/optimizing-database-schemas-uml-class-diagrams\/"},"modified":"2026-04-01T13:46:26","modified_gmt":"2026-04-01T13:46:26","slug":"optimizing-database-schemas-uml-class-diagrams","status":"publish","type":"post","link":"https:\/\/www.go-notes.com\/cn\/optimizing-database-schemas-uml-class-diagrams\/","title":{"rendered":"\u5229\u7528UML\u7c7b\u56fe\u4f18\u5316\u6570\u636e\u5e93\u6a21\u5f0f"},"content":{"rendered":"<p>\u8bbe\u8ba1\u4e00\u4e2a\u7a33\u5065\u7684\u6570\u636e\u5e93\u57fa\u7840\u5bf9\u4e8e\u4efb\u4f55\u8f6f\u4ef6\u5e94\u7528\u7684\u957f\u671f\u6027\u548c\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002\u5f53\u6570\u636e\u7ed3\u6784\u89c4\u5212\u4e0d\u5f53\u65f6\uff0c\u7ef4\u62a4\u6210\u672c\u4e0a\u5347\uff0c\u67e5\u8be2\u901f\u5ea6\u4e0b\u964d\uff0c\u7cfb\u7edf\u53ef\u9760\u6027\u53d7\u635f\u3002\u6570\u636e\u5efa\u6a21\u7684\u4e25\u8c28\u65b9\u6cd5\u59cb\u4e8e\u7f16\u5199\u7b2c\u4e00\u884cSQL\u4ee3\u7801\u4e4b\u524d\u3002\u672c\u6307\u5357\u63a2\u8ba8\u4e86\u5982\u4f55\u5229\u7528\u7edf\u4e00\u5efa\u6a21\u8bed\u8a00\uff08UML\uff09\u7c7b\u56fe\u6765\u7b80\u5316\u4f18\u5316\u6570\u636e\u5e93\u6a21\u5f0f\u7684\u8fc7\u7a0b\u3002\u901a\u8fc7\u5c06\u9762\u5411\u5bf9\u8c61\u7684\u8bbe\u8ba1\u8f6c\u5316\u4e3a\u5173\u7cfb\u7ed3\u6784\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u786e\u4fdd\u6e05\u6670\u6027\u3001\u4e00\u81f4\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Cute kawaii-style infographic illustrating how UML class diagrams optimize database schemas, featuring pastel-colored rounded vector elements showing classes-to-tables mapping, relationship types (one-to-one, one-to-many, many-to-many), normalization levels (1NF, 2NF, 3NF), performance indexing tips, and common design pitfalls with friendly character icons and simple visual flow\" decoding=\"async\" src=\"https:\/\/www.go-notes.com\/wp-content\/uploads\/2026\/04\/kawaii-uml-database-schema-optimization-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>\u4e3a\u4ec0\u4e48\u6570\u636e\u7684\u53ef\u89c6\u5316\u5efa\u6a21\u81f3\u5173\u91cd\u8981 \ud83d\udcca<\/h2>\n<p>\u4ee3\u7801\u662f\u6267\u884c\uff0c\u800c\u8bbe\u8ba1\u662f\u84dd\u56fe\u3002\u5982\u679c\u6ca1\u6709\u6570\u636e\u5b9e\u4f53\u4e4b\u95f4\u5173\u7cfb\u7684\u53ef\u89c6\u5316\u8868\u793a\uff0c\u56e2\u961f\u5f80\u5f80\u4f9d\u8d56\u4e8e\u968f\u9879\u76ee\u589e\u957f\u800c\u9010\u6e10\u504f\u79bb\u7684\u5fc3\u7406\u6a21\u578b\u3002UML\u7c7b\u56fe\u63d0\u4f9b\u4e86\u4e00\u79cd\u6807\u51c6\u5316\u7684\u65b9\u5f0f\u6765\u8bb0\u5f55\u7cfb\u7edf\u67b6\u6784\u3002\u5b83\u4eec\u4fc3\u4f7f\u5728\u5f00\u53d1\u751f\u547d\u5468\u671f\u7684\u65e9\u671f\u5c31\u8003\u8651\u5c5e\u6027\u3001\u5173\u7cfb\u548c\u7ea6\u675f\u3002<\/p>\n<ul>\n<li><strong>\u6e05\u6670\u6027\uff1a<\/strong>\u5229\u76ca\u76f8\u5173\u8005\u53ef\u4ee5\u5728\u4e0d\u9605\u8bfb\u6280\u672f\u89c4\u8303\u7684\u60c5\u51b5\u4e0b\u76f4\u89c2\u7406\u89e3\u6570\u636e\u6d41\u52a8\u3002<\/li>\n<li><strong>\u6c9f\u901a\uff1a<\/strong>\u5f00\u53d1\u8005\u3001\u8bbe\u8ba1\u5e08\u548c\u4e1a\u52a1\u5206\u6790\u5e08\u5171\u4eab\u4e00\u5957\u5171\u540c\u7684\u672f\u8bed\u3002<\/li>\n<li><strong>\u4e00\u81f4\u6027\uff1a<\/strong>\u5728\u6574\u5e93\u8303\u56f4\u5185\u5f3a\u5236\u6267\u884c\u547d\u540d\u89c4\u8303\u548c\u7ed3\u6784\u89c4\u5219\u3002<\/li>\n<li><strong>\u6587\u6863\uff1a<\/strong>\u4f5c\u4e3a\u968f\u4ee3\u7801\u5e93\u4e0d\u65ad\u6f14\u8fdb\u7684\u52a8\u6001\u6587\u6863\u3002<\/li>\n<\/ul>\n<p>\u5728\u5e94\u7528\u4e8e\u6570\u636e\u5e93\u6a21\u5f0f\u4f18\u5316\u65f6\uff0c\u8fd9\u4e9b\u56fe\u8868\u5145\u5f53\u4e86\u62bd\u8c61\u9700\u6c42\u4e0e\u5177\u4f53\u5b58\u50a8\u673a\u5236\u4e4b\u95f4\u7684\u6865\u6881\u3002\u5b83\u4eec\u6709\u52a9\u4e8e\u5728\u5b9e\u65bd\u5f00\u59cb\u524d\u8bc6\u522b\u5197\u4f59\u6570\u636e\u3001\u6a21\u7cca\u5173\u7cfb\u4ee5\u53ca\u6f5c\u5728\u74f6\u9888\u3002<\/p>\n<h2>UML\u7c7b\u56fe\u7684\u6838\u5fc3\u7ec4\u4ef6 \ud83d\udee0\ufe0f<\/h2>\n<p>\u8981\u6709\u6548\u5730\u5c06UML\u56fe\u8f6c\u6362\u4e3a\u6570\u636e\u5e93\u6a21\u5f0f\uff0c\u5fc5\u987b\u7406\u89e3\u5176\u4e2d\u6d89\u53ca\u7684\u5177\u4f53\u5143\u7d20\u3002\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u4e2d\u7684\u7c7b\u5bf9\u5e94\u5173\u7cfb\u6570\u636e\u5e93\u4e2d\u7684\u8868\u3002\u7136\u800c\uff0c\u8fd9\u79cd\u6620\u5c04\u9700\u8981\u4ed4\u7ec6\u5173\u6ce8\u7ec6\u8282\u3002<\/p>\n<h3>1. \u7c7b\u4e0e\u8868<\/h3>\n<p>\u56fe\u4e2d\u5b9a\u4e49\u7684\u6bcf\u4e2a\u7c7b\u901a\u5e38\u90fd\u4f1a\u6210\u4e3a\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u5f20\u8868\u3002\u7c7b\u540d\u76f4\u63a5\u6620\u5c04\u4e3a\u8868\u540d\u3002\u4f8b\u5982\uff0c\u540d\u4e3a<code>User<\/code>\u7684\u7c7b\u4f1a\u53d8\u6210\u540d\u4e3a<code>users<\/code>\u7684\u8868\u3002\u7c7b\u4e2d\u7684\u5c5e\u6027\u4f1a\u53d8\u6210\u8868\u4e2d\u7684\u5217\u3002<\/p>\n<h3>2. \u5c5e\u6027\u4e0e\u6570\u636e\u7c7b\u578b<\/h3>\n<p>\u5c5e\u6027\u5b9a\u4e49\u4e86\u5b9e\u4f53\u7684\u7279\u6027\u3002\u5728\u6570\u636e\u5e93\u73af\u5883\u4e2d\uff0c\u8fd9\u4e9b\u9700\u8981\u7279\u5b9a\u7684\u6570\u636e\u7c7b\u578b\u3002UML\u4e2d\u7684\u5c5e\u6027\u53ef\u80fd\u88ab\u5b9a\u4e49\u4e3a<code>String<\/code>\uff0c\u4f46\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u8fd9\u4f1a\u8f6c\u6362\u4e3a<code>VARCHAR<\/code>, <code>TEXT<\/code>\uff0c\u6216<code>CHAR<\/code> \u53d6\u51b3\u4e8e\u957f\u5ea6\u548c\u4f7f\u7528\u9650\u5236\u3002\u8fd9\u91cc\u7cbe\u5ea6\u5f88\u91cd\u8981\u3002<\/p>\n<ul>\n<li><strong>\u4e3b\u952e\uff1a<\/strong> \u7c7b\u5b9e\u4f8b\u7684\u552f\u4e00\u6807\u8bc6\u7b26\u3002\u5728UML\u4e2d\uff0c\u901a\u5e38\u7528<code>+id<\/code> \u6216 <code>+PK<\/code>\u3002\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u8fd9\u53d8\u4e3a<code>\u4e3b\u952e<\/code>.<\/li>\n<li><strong>\u5916\u952e\uff1a<\/strong> \u4e0e\u53e6\u4e00\u4e2a\u7c7b\u5173\u8054\u7684\u5c5e\u6027\u3002\u8fd9\u4e9b\u786e\u4fdd\u5f15\u7528\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u53ef\u89c1\u6027\uff1a<\/strong> \u516c\u5171\u5c5e\u6027\u6620\u5c04\u5230\u53ef\u8bbf\u95ee\u7684\u5217\uff0c\u800c\u79c1\u6709\u5c5e\u6027\u53ef\u80fd\u8868\u793a\u5185\u90e8\u903b\u8f91\u6216\u9690\u85cf\u6570\u636e\u3002<\/li>\n<\/ul>\n<h3>3. \u64cd\u4f5c\u548c\u7ea6\u675f<\/h3>\n<p>\u7c7b\u56fe\u4e2d\u7684\u64cd\u4f5c\u8868\u793a\u65b9\u6cd5\u3002\u867d\u7136\u6570\u636e\u5e93\u6a21\u5f0f\u4e0d\u4f1a\u5728\u5217\u4e2d\u5b58\u50a8\u903b\u8f91\uff0c\u4f46\u4f1a\u5b58\u50a8\u7ea6\u675f\u3002\u89e6\u53d1\u5668\u3001\u5b58\u50a8\u8fc7\u7a0b\u548c\u68c0\u67e5\u7ea6\u675f\u901a\u5e38\u4e0e\u7c7b\u64cd\u4f5c\u4e2d\u7684\u903b\u8f91\u76f8\u5bf9\u5e94\u3002\u5728\u5efa\u6a21\u9636\u6bb5\u8bc6\u522b\u8fd9\u4e9b\u5185\u5bb9\uff0c\u53ef\u786e\u4fdd\u6570\u636e\u5e93\u81ea\u52a8\u5f3a\u5236\u6267\u884c\u4e1a\u52a1\u89c4\u5219\u3002<\/p>\n<h2>\u5c06\u5173\u7cfb\u6620\u5c04\u5230\u5916\u952e \ud83d\udd17<\/h2>\n<p>\u5173\u7cfb\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u652f\u67f1\u3002UML\u7c7b\u56fe\u5728\u63cf\u7ed8\u8fd9\u4e9b\u8fde\u63a5\u65b9\u9762\u8868\u73b0\u51fa\u8272\u3002\u7406\u89e3\u57fa\u6570\u5bf9\u4e8e\u4f18\u5316\u6a21\u5f0f\u6027\u80fd\u548c\u5b8c\u6574\u6027\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h3>\u4e00\u5bf9\u4e00\u5173\u7cfb<\/h3>\n<p>\u5f53\u4e00\u4e2a\u7c7b\u7684\u5355\u4e2a\u5b9e\u4f8b\u4e0e\u53e6\u4e00\u4e2a\u7c7b\u7684\u5355\u4e2a\u5b9e\u4f8b\u76f8\u94fe\u63a5\u65f6\uff0c\u5c31\u4f1a\u53d1\u751f\u8fd9\u79cd\u5173\u7cfb\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a<code>\u4eba<\/code>\u53ef\u80fd\u6070\u597d\u6709\u4e00\u4e2a<code>\u62a4\u7167<\/code>.<\/p>\n<ul>\n<li><strong>\u5b9e\u73b0\uff1a<\/strong> \u5728\u4efb\u4e00\u8868\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u5916\u952e\u5217\u3002\u901a\u5e38\uff0c\u5177\u6709\u53ef\u9009\u7aef\u7684\u8868\uff08\u5982\u679c\u5173\u7cfb\u4e0d\u662f\u5f3a\u5236\u6027\u7684\uff09\u4f1a\u6301\u6709\u5916\u952e\u3002<\/li>\n<li><strong>\u4f18\u5316\uff1a<\/strong> \u5982\u679c\u6570\u636e\u603b\u662f\u88ab\u4e00\u8d77\u8bbf\u95ee\uff0c\u8003\u8651\u5408\u5e76\u8868\u4ee5\u51cf\u5c11\u8fde\u63a5\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h3>\u4e00\u5bf9\u591a\u5173\u7cfb<\/h3>\n<p>\u8fd9\u662f\u6700\u5e38\u89c1\u7684\u5173\u7cfb\u7c7b\u578b\u3002\u4e00\u4e2a<code>\u5ba2\u6237<\/code> \u53ef\u4ee5\u653e\u7f6e\u591a\u4e2a <code>\u8ba2\u5355<\/code>\uff0c\u4f46\u6bcf\u4e2a\u8ba2\u5355\u53ea\u5c5e\u4e8e\u4e00\u4e2a\u5ba2\u6237\u3002<\/p>\n<ul>\n<li><strong>\u5b9e\u73b0\uff1a<\/strong> \u5c06\u5916\u952e\u653e\u5728\u201c\u591a\u201d\u65b9\u7684\u8868\u4e2d\uff08\u5373 <code>\u8ba2\u5355<\/code> \u8868\uff09\u3002<\/li>\n<li><strong>\u4f18\u5316\uff1a<\/strong> \u5bf9\u5916\u952e\u5217\u5efa\u7acb\u7d22\u5f15\uff0c\u4ee5\u52a0\u5feb\u67e5\u8be2\u7279\u5b9a\u5ba2\u6237\u8ba2\u5355\u7684\u901f\u5ea6\u3002<\/li>\n<\/ul>\n<h3>\u591a\u5bf9\u591a\u5173\u7cfb<\/h3>\n<p>\u5728\u8fd9\u91cc\uff0c\u4e00\u4e2a\u7c7b\u7684\u5b9e\u4f8b\u4e0e\u53e6\u4e00\u4e2a\u7c7b\u7684\u591a\u4e2a\u5b9e\u4f8b\u76f8\u5173\u8054\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002\u4e00\u4e2a <code>\u5b66\u751f<\/code> \u53ef\u4ee5\u9009\u4fee\u591a\u4e2a <code>\u8bfe\u7a0b<\/code>\uff0c\u800c\u4e00\u4e2a <code>\u8bfe\u7a0b<\/code> \u53ef\u4ee5\u6709\u591a\u4e2a <code>\u5b66\u751f<\/code>.<\/p>\n<ul>\n<li><strong>\u5b9e\u73b0\uff1a<\/strong> \u4f60\u65e0\u6cd5\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u76f4\u63a5\u5b9e\u73b0\u6b64\u5173\u7cfb\u3002\u5fc5\u987b\u521b\u5efa\u4e00\u4e2a\u5173\u8054\u8868\uff08\u8fde\u63a5\u8868\uff09\u6765\u89e3\u51b3\u8fd9\u79cd\u5173\u7cfb\u3002<\/li>\n<li><strong>\u4f18\u5316\uff1a<\/strong> \u786e\u4fdd\u8fde\u63a5\u8868\u5177\u6709\u590d\u5408\u952e\u6216\u9002\u5f53\u7684\u7d22\u5f15\uff0c\u4ee5\u9ad8\u6548\u5904\u7406\u67e5\u627e\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<table>\n<thead>\n<tr>\n<th>\u5173\u7cfb\u7c7b\u578b<\/th>\n<th>UML \u8868\u793a\u6cd5<\/th>\n<th>\u6570\u636e\u5e93\u5b9e\u73b0<\/th>\n<th>\u6027\u80fd\u63d0\u793a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u4e00\u5bf9\u4e00<\/td>\n<td>1..1 \u2014- 1..1<\/td>\n<td>\u4e00\u4e2a\u8868\u4e2d\u7684\u5916\u952e<\/td>\n<td>\u8003\u8651\u8868\u5408\u5e76\u4ee5\u63d0\u9ad8\u8bbf\u95ee\u901f\u5ea6<\/td>\n<\/tr>\n<tr>\n<td>\u4e00\u5bf9\u591a<\/td>\n<td>1 \u2014- * <\/td>\n<td>\u201c\u591a\u201d\u7aef\u8868\u4e2d\u7684\u5916\u952e<\/td>\n<td>\u4e3a\u5916\u952e\u5217\u521b\u5efa\u7d22\u5f15<\/td>\n<\/tr>\n<tr>\n<td>\u591a\u5bf9\u591a<\/td>\n<td>* \u2014- *<\/td>\n<td>\u4e2d\u95f4\u5173\u8054\u8868<\/td>\n<td>\u5728\u5173\u8054\u8868\u4e2d\u4e3a\u4e24\u4e2a\u5916\u952e\u90fd\u521b\u5efa\u7d22\u5f15<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>UML\u4e2d\u7684\u89c4\u8303\u5316\u7b56\u7565 \ud83d\udcc9<\/h2>\n<p>\u89c4\u8303\u5316\u662f\u7ec4\u7ec7\u6570\u636e\u4ee5\u51cf\u5c11\u5197\u4f59\u5e76\u63d0\u9ad8\u5b8c\u6574\u6027\u7684\u8fc7\u7a0b\u3002\u867d\u7136UML\u56fe\u4fa7\u91cd\u4e8e\u7ed3\u6784\uff0c\u4f46\u89c4\u8303\u5316\u7684\u539f\u5219\u6307\u5bfc\u7740\u5c5e\u6027\u5728\u7c7b\u4e4b\u95f4\u7684\u5206\u5e03\u65b9\u5f0f\u3002<\/p>\n<h3>\u7b2c\u4e00\u8303\u5f0f\uff081NF\uff09<\/h3>\n<p>\u539f\u5b50\u6027\u662f\u5173\u952e\u3002\u6bcf\u4e00\u5217\u5e94\u4ec5\u5305\u542b\u4e00\u4e2a\u503c\u3002\u5728UML\u672f\u8bed\u4e2d\uff0c\u8fd9\u610f\u5473\u7740\u5e94\u907f\u514d\u5728\u5355\u4e00\u5b57\u6bb5\u4e2d\u76f4\u63a5\u5b58\u50a8\u5217\u8868\u6216\u6570\u7ec4\u7b49\u590d\u6742\u5bf9\u8c61\u5c5e\u6027\uff0c\u9664\u975e\u6570\u636e\u7c7b\u578b\u539f\u751f\u652f\u6301\u4e14\u67e5\u8be2\u6548\u7387\u9ad8\u3002<\/p>\n<ul>\n<li><strong>\u68c0\u67e5\uff1a<\/strong> \u786e\u4fdd\u5c5e\u6027\u4e0d\u662f\u91cd\u590d\u7ec4\u3002<\/li>\n<li><strong> \u793a\u4f8b\uff1a<\/strong> \u4e0d\u5e94\u4f7f\u7528\u5355\u4e00\u7684 <code>phone_numbers<\/code> \u5b57\u6bb5\u6765\u5b58\u50a8 <code>[123, 456]<\/code>\uff0c\u800c\u5e94\u521b\u5efa\u4e00\u4e2a\u72ec\u7acb\u7684 <code>Phone<\/code> \u7c7b\u3002<\/li>\n<\/ul>\n<h3>\u7b2c\u4e8c\u8303\u5f0f\uff082NF\uff09<\/h3>\n<p>\u6240\u6709\u975e\u952e\u5c5e\u6027\u5fc5\u987b\u5b8c\u5168\u4f9d\u8d56\u4e8e\u4e3b\u952e\u3002\u5982\u679c\u4e00\u4e2a\u7c7b\u5177\u6709\u590d\u5408\u4e3b\u952e\uff0c\u5219\u5fc5\u987b\u786e\u4fdd\u6ca1\u6709\u5c5e\u6027\u4ec5\u4f9d\u8d56\u4e8e\u8be5\u952e\u7684\u4e00\u90e8\u5206\u3002\u8fd9\u901a\u5e38\u4f1a\u5bfc\u81f4\u5728UML\u56fe\u4e2d\u62c6\u5206\u7c7b\uff0c\u4ee5\u9694\u79bb\u7279\u5b9a\u6570\u636e\u3002<\/p>\n<h3>\u7b2c\u4e09\u8303\u5f0f\uff083NF\uff09<\/h3>\n<p>\u5e94\u6d88\u9664\u4f20\u9012\u4f9d\u8d56\u3002\u5982\u679c\u5c5e\u6027A\u51b3\u5b9aB\uff0c\u800cB\u51b3\u5b9aC\uff0c\u5219A\u51b3\u5b9aC\u3002\u5728\u6a21\u5f0f\u8bbe\u8ba1\u4e2d\uff0c\u8fd9\u610f\u5473\u7740\u5982\u679cB\u4e0d\u662fA\u7684\u76f4\u63a5\u8eab\u4efd\u7684\u4e00\u90e8\u5206\uff0c\u5219\u5e94\u5c06B\u79fb\u81f3\u5176\u81ea\u8eab\u7684\u7c7b\u4e2d\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u89c4\u8303\u5316\u7ea7\u522b<\/th>\n<th>\u89c4\u5219<\/th>\n<th>UML\u5f71\u54cd<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u7b2c\u4e00\u8303\u5f0f<\/td>\n<td>\u65e0\u91cd\u590d\u7ec4<\/td>\n<td>\u5c06\u5217\u8868\u5c5e\u6027\u62c6\u5206\u4e3a\u72ec\u7acb\u7684\u7c7b<\/td>\n<\/tr>\n<tr>\n<td>\u7b2c\u4e8c\u8303\u5f0f<\/td>\n<td>\u65e0\u90e8\u5206\u4f9d\u8d56<\/td>\n<td>\u5c06\u4f9d\u8d56\u4e8e\u952e\u5b50\u96c6\u7684\u5c5e\u6027\u9694\u79bb<\/td>\n<\/tr>\n<tr>\n<td>\u7b2c\u4e09\u8303\u5f0f<\/td>\n<td>\u65e0\u4f20\u9012\u4f9d\u8d56<\/td>\n<td>\u4e3a\u4f9d\u8d56\u5c5e\u6027\u521b\u5efa\u65b0\u7c7b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u6027\u80fd\u8003\u8651\u4e0e\u7d22\u5f15 \u2699\ufe0f<\/h2>\n<p>\u5c3d\u7ba1UML\u56fe\u793a\u4e0d\u4f1a\u660e\u786e\u663e\u793a\u6570\u636e\u5e93\u7d22\u5f15\uff0c\u4f46\u5176\u6240\u5b9a\u4e49\u7684\u7ed3\u6784\u51b3\u5b9a\u4e86\u7d22\u5f15\u5e94\u653e\u7f6e\u7684\u4f4d\u7f6e\u3002\u4f18\u5316\u9700\u8981\u5728\u5b58\u50a8\u7a7a\u95f4\u548c\u67e5\u8be2\u901f\u5ea6\u4e4b\u95f4\u53d6\u5f97\u5e73\u8861\u3002<\/p>\n<ul>\n<li><strong>\u67e5\u8be2\u6a21\u5f0f\uff1a<\/strong>\u5206\u6790\u6570\u636e\u5c06\u5982\u4f55\u88ab\u68c0\u7d22\u3002\u5982\u679c\u67d0\u4e2a\u7279\u5b9a\u5c5e\u6027\u7ecf\u5e38\u7528\u4e8e\u641c\u7d22\u6761\u4ef6\uff0c\u5219\u5e94\u5bf9\u5176\u8fdb\u884c\u7d22\u5f15\u3002<\/li>\n<li><strong>\u5916\u952e\uff1a<\/strong>\u59cb\u7ec8\u5bf9\u5916\u952e\u5217\u8fdb\u884c\u7d22\u5f15\u3002\u5982\u679c\u6ca1\u6709\u5916\u952e\u7d22\u5f15\uff0c\u8868\u8fde\u63a5\u5c06\u53d8\u6210\u5168\u8868\u626b\u63cf\uff0c\u901f\u5ea6\u5f88\u6162\u3002<\/li>\n<li><strong>\u53cd\u89c4\u8303\u5316\uff1a<\/strong>\u6709\u65f6\uff0c\u4e25\u683c\u7684\u89c4\u8303\u5316\u4f1a\u51cf\u6162\u8bfb\u53d6\u901f\u5ea6\u3002UML\u56fe\u793a\u53ef\u4ee5\u5e2e\u52a9\u8bc6\u522b\u54ea\u4e9b\u5730\u65b9\u53ef\u4ee5\u5b89\u5168\u5730\u8fdb\u884c\u53cd\u89c4\u8303\u5316\uff0c\u4f8b\u5982\u7f13\u5b58\u76f8\u5173\u9879\u7684\u6570\u91cf\u3002<\/li>\n<li><strong>\u6570\u636e\u7c7b\u578b\uff1a<\/strong>\u5728\u56fe\u793a\u4e2d\u9009\u62e9\u6b63\u786e\u7684\u6570\u636e\u7c7b\u578b\u4f1a\u5f71\u54cd\u5b58\u50a8\u548c\u6027\u80fd\u3002\u4f7f\u7528 <code>INT<\/code> \u800c\u4e0d\u662f <code>STRING<\/code> \u4f5c\u4e3aID\u3002\u4f7f\u7528 <code>DATE<\/code> \u800c\u4e0d\u662f <code>STRING<\/code> \u4f5c\u4e3a\u65f6\u95f4\u6233\u3002<\/li>\n<\/ul>\n<h2>\u6a21\u5f0f\u8bbe\u8ba1\u4e2d\u7684\u5e38\u89c1\u9677\u9631 \u274c<\/h2>\n<p>\u5373\u4f7f\u62e5\u6709\u6e05\u6670\u7684UML\u6a21\u578b\uff0c\u5728\u8f6c\u6362\u4e3aSQL\u65f6\u4ecd\u53ef\u80fd\u51fa\u73b0\u9519\u8bef\u3002\u4e86\u89e3\u5e38\u89c1\u9519\u8bef\u6709\u52a9\u4e8e\u4fdd\u6301\u6a21\u5f0f\u7684\u5065\u5eb7\u3002<\/p>\n<h3>1. \u8fc7\u5ea6\u89c4\u8303\u5316<\/h3>\n<p>\u521b\u5efa\u8fc7\u591a\u7684\u8868\u4f1a\u4f7f\u67e5\u8be2\u53d8\u5f97\u590d\u6742\u4e14\u7f13\u6162\u3002\u5982\u679c\u4e00\u4e2a\u7b80\u5355\u7684\u8bfb\u53d6\u64cd\u4f5c\u6d89\u53ca\u4e94\u4e2a\u6216\u66f4\u591a\u5f20\u8868\u7684\u8fde\u63a5\uff0c\u5e94\u8003\u8651\u662f\u5426\u53ef\u4ee5\u5408\u5e76\u90e8\u5206\u6570\u636e\u3002UML\u56fe\u5e94\u53cd\u6620\u4e1a\u52a1\u903b\u8f91\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u7406\u8bba\u4e0a\u7684\u7eaf\u7cb9\u6027\u3002<\/p>\n<h3>2. \u5ffd\u89c6\u7a7a\u503c\u6027<\/h3>\n<p>UML\u5c5e\u6027\u901a\u5e38\u6697\u793a\u67d0\u4e2a\u503c\u662f\u5426\u4e3a\u5fc5\u9700\u3002\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u8fd9\u8f6c\u5316\u4e3a<code>NOT NULL<\/code>\u7ea6\u675f\u3002\u672a\u80fd\u6b63\u786e\u6620\u5c04\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u5b8c\u6574\u6027\u95ee\u9898\u3002\u786e\u4fdd\u56fe\u4e2d\u7684\u53ef\u9009\u5c5e\u6027\u6620\u5c04\u5230\u53ef\u4e3a\u7a7a\u7684\u5217\u3002<\/p>\n<h3>3. \u5faa\u73af\u4f9d\u8d56<\/h3>\n<p>\u4e00\u79cd\u5173\u7cfb\uff0c\u5176\u4e2d\u7c7bA\u4f9d\u8d56\u4e8e\u7c7bB\uff0c\u7c7bB\u4f9d\u8d56\u4e8e\u7c7bC\uff0c\u800c\u7c7bC\u53c8\u4f9d\u8d56\u56de\u7c7bA\u3002\u867d\u7136\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u662f\u6709\u6548\u7684\uff0c\u4f46\u8fd9\u5728\u521d\u59cb\u5316\u6216\u8fc1\u79fb\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u5f15\u53d1\u5faa\u73af\u5f15\u7528\u9519\u8bef\u3002\u5e94\u5728\u8bbe\u8ba1\u9636\u6bb5\u6253\u7834\u8fd9\u4e9b\u5faa\u73af\u3002<\/p>\n<h3>4. \u547d\u540d\u4e0d\u4e00\u81f4<\/h3>\n<p>\u4f7f\u7528<code>user_id<\/code>\u5728\u4e00\u5f20\u8868\u4e2d\uff0c\u800c<code>UserId<\/code>\u5728\u53e6\u4e00\u5f20\u8868\u4e2d\u4f1a\u9020\u6210\u6df7\u6dc6\u3002UML\u56fe\u5f3a\u5236\u547d\u540d\u4e00\u81f4\u6027\u3002\u575a\u6301\u4f7f\u7528\u5355\u4e00\u547d\u540d\u89c4\u8303\uff0c\u4f8b\u5982\u8868\u548c\u5217\u4f7f\u7528snake_case\u3002<\/p>\n<h2>\u8fed\u4ee3\u8bbe\u8ba1\u4e0e\u7ef4\u62a4 \ud83d\udd04<\/h2>\n<p>\u6570\u636e\u5e93\u6a21\u5f0f\u5e76\u975e\u9759\u6001\u7684\u3002\u9700\u6c42\u4f1a\u53d8\u5316\uff0cUML\u7c7b\u56fe\u5fc5\u987b\u968f\u7740\u5e94\u7528\u7a0b\u5e8f\u4e00\u540c\u6f14\u8fdb\u3002\u4e00\u4e2a\u4f18\u5316\u7684\u6a21\u5f0f\u662f\u80fd\u591f\u5728\u4e0d\u7834\u574f\u73b0\u6709\u529f\u80fd\u7684\u524d\u63d0\u4e0b\u9002\u5e94\u53d8\u5316\u7684\u6a21\u5f0f\u3002<\/p>\n<ul>\n<li><strong>\u7248\u672c\u63a7\u5236\uff1a<\/strong>\u4fdd\u7559UML\u56fe\u7684\u591a\u4e2a\u7248\u672c\uff0c\u4ee5\u8ffd\u8e2a\u968f\u65f6\u95f4\u7684\u53d8\u5316\u3002<\/li>\n<li><strong>\u91cd\u6784\uff1a<\/strong>\u5982\u679c\u4e00\u4e2a\u7c7b\u53d8\u5f97\u8fc7\u5927\uff0c\u53ef\u80fd\u9700\u8981\u5c06\u5176\u62c6\u5206\u3002\u8fd9\u662f\u4e00\u79cd\u7ed3\u6784\u4e0a\u7684\u91cd\u6784\uff0c\u9700\u8981\u4ed4\u7ec6\u7684\u8fc1\u79fb\u89c4\u5212\u3002<\/li>\n<li><strong>\u5ba1\u67e5\u5468\u671f\uff1a<\/strong>\u5b9a\u671f\u6839\u636e\u5f53\u524d\u7684UML\u6a21\u578b\u5ba1\u6838\u6a21\u5f0f\u3002\u786e\u4fdd\u7269\u7406\u6570\u636e\u5e93\u4e0e\u903b\u8f91\u8bbe\u8ba1\u4e00\u81f4\u3002<\/li>\n<li><strong>\u5411\u540e\u517c\u5bb9\u6027\uff1a<\/strong>\u5728\u4fee\u6539\u6a21\u5f0f\u65f6\uff0c\u786e\u4fdd\u65b0\u66f4\u6539\u4e0d\u4f1a\u7834\u574f\u4f9d\u8d56\u65e7\u7ed3\u6784\u7684\u73b0\u6709\u67e5\u8be2\u6216\u5e94\u7528\u7a0b\u5e8f\u3002<\/li>\n<\/ul>\n<h2>\u6587\u6863\u7f16\u5236\u7684\u6700\u4f73\u5b9e\u8df5 \ud83d\udcdd<\/h2>\n<p>\u4e00\u4e2a\u7ef4\u62a4\u826f\u597d\u7684UML\u56fe\u662f\u4e00\u79cd\u6587\u6863\u5f62\u5f0f\u3002\u5b83\u80fd\u51cf\u8f7b\u65b0\u6210\u5458\u7684\u8ba4\u77e5\u8d1f\u62c5\uff0c\u5e76\u6709\u52a9\u4e8e\u6545\u969c\u6392\u67e5\u3002<\/p>\n<ul>\n<li><strong>\u56fe\u4f8b\uff1a<\/strong>\u5305\u542b\u4e00\u4e2a\u56fe\u4f8b\uff0c\u89e3\u91ca\u56fe\u4e2d\u4f7f\u7528\u7684\u7b26\u53f7\uff0c\u7279\u522b\u662f\u53ef\u89c1\u6027\u4fee\u9970\u7b26\u548c\u7ee7\u627f\u5173\u7cfb\u3002<\/li>\n<li><strong>\u6ce8\u91ca\uff1a<\/strong>\u5728\u56fe\u4e2d\u4f7f\u7528\u6ce8\u91ca\u6765\u89e3\u91ca\u90a3\u4e9b\u4e0d\u660e\u663e\u7684\u590d\u6742\u7ea6\u675f\u6216\u4e1a\u52a1\u89c4\u5219\u3002<\/li>\n<li><strong>\u5143\u6570\u636e\uff1a<\/strong> \u5728\u56fe\u8868\u4e0a\u8bb0\u5f55\u4f5c\u8005\u3001\u521b\u5efa\u65e5\u671f\u548c\u6700\u540e\u4fee\u6539\u65e5\u671f\u3002<\/li>\n<li><strong> \u4e00\u81f4\u6027\uff1a<\/strong> \u786e\u4fdd\u56fe\u8868\u4e0e\u5b9e\u9645\u4ee3\u7801\u4e00\u81f4\u3002\u8bbe\u8ba1\u4e0e\u5b9e\u73b0\u4e4b\u95f4\u7684\u504f\u5dee\u4f1a\u4f7f\u6a21\u578b\u5931\u53bb\u4f5c\u7528\u3002<\/li>\n<\/ul>\n<h2> \u9ad8\u7ea7\u5173\u7cfb\u6a21\u5f0f \ud83e\udde9<\/h2>\n<p>\u9664\u4e86\u6807\u51c6\u5173\u7cfb\u5916\uff0cUML \u56fe\u8868\u8fd8\u53ef\u4ee5\u5efa\u6a21\u590d\u6742\u7684\u7ee7\u627f\u5c42\u6b21\u7ed3\u6784\u548c\u805a\u5408\u5173\u7cfb\uff0c\u8fd9\u4e9b\u5173\u7cfb\u5bf9\u6570\u636e\u5e93\u6a21\u5f0f\u6709\u663e\u8457\u5f71\u54cd\u3002<\/p>\n<h3>\u7ee7\u627f\u4e0e\u591a\u6001\u6027<\/h3>\n<p>\u5f53\u4e00\u4e2a <code>Vehicle<\/code> \u7c7b\u5177\u6709\u50cf <code>Car<\/code> \u548c <code>Truck<\/code> \u65f6\uff0c\u6570\u636e\u5e93\u7b56\u7565\u4f1a\u53d1\u751f\u53d8\u5316\u3002\u4f60\u53ef\u4ee5\u7528\u4e09\u79cd\u65b9\u5f0f\u6765\u6620\u5c04\u8fd9\u79cd\u7ed3\u6784\uff1a<\/p>\n<ul>\n<li><strong> \u5355\u8868\uff1a<\/strong> \u4e00\u4e2a\u5e26\u6709\u7c7b\u578b\u9274\u522b\u5217\u7684\u8868\u3002\u8bfb\u53d6\u901f\u5ea6\u6700\u5feb\uff0c\u4f46\u5217\u6570\u636e\u7a00\u758f\u3002<\/li>\n<li><strong> \u7c7b\u8868\uff1a<\/strong> \u6bcf\u4e2a\u7c7b\u4e00\u4e2a\u8868\uff0c\u901a\u8fc7\u8fde\u63a5\u7ec4\u5408\u3002\u4e25\u683c\u89c4\u8303\u5316\uff0c\u4f46\u8fde\u63a5\u590d\u6742\u3002<\/li>\n<li><strong> \u5177\u4f53\u8868\uff1a<\/strong> \u4e3a\u6bcf\u4e2a\u5177\u4f53\u5b50\u7c7b\u5206\u522b\u5efa\u7acb\u8868\u3002\u9488\u5bf9\u7279\u5b9a\u7c7b\u578b\u65e0\u9700\u8fde\u63a5\uff0c\u4f46\u5b58\u5728\u91cd\u590d\u5217\u3002<\/li>\n<\/ul>\n<h3> \u805a\u5408\u4e0e\u7ec4\u5408<\/h3>\n<p> 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