{"id":1730,"date":"2026-03-27T18:41:30","date_gmt":"2026-03-27T18:41:30","guid":{"rendered":"https:\/\/www.viz-read.com\/cn\/erd-best-practices-senior-developers\/"},"modified":"2026-03-27T18:41:30","modified_gmt":"2026-03-27T18:41:30","slug":"erd-best-practices-senior-developers","status":"publish","type":"post","link":"https:\/\/www.viz-read.com\/cn\/erd-best-practices-senior-developers\/","title":{"rendered":"ERD 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class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Charcoal sketch infographic illustrating ERD best practices for senior developers: features entity relationship diagrams with proper naming conventions (plural snake_case), visual guide to relationship cardinality (one-to-one, one-to-many, many-to-many), normalization levels (1NF-3NF) with denormalization trade-offs, surrogate vs natural key comparison, database constraints shield (NOT NULL, UNIQUE, CHECK, referential integrity), performance indexing strategies, and a senior-level checklist for sustainable data modeling, all rendered in professional monochrome contour style with soft shading on 16:9 layout\" decoding=\"async\" src=\"https:\/\/www.viz-read.com\/wp-content\/uploads\/2026\/03\/erd-best-practices-senior-developers-infographic-charcoal-sketch.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83d\udcd0 \u624e\u5b9e\u6570\u636e\u5efa\u6a21\u7684\u57fa\u7840<\/h2>\n<p>\u5728\u7ed8\u5236\u4efb\u4f55\u7ebf\u6761\u4e4b\u524d\uff0c\u5fc5\u987b\u7406\u89e3\u6784\u6210\u5173\u7cfb\u6a21\u578b\u7684\u6838\u5fc3\u7ec4\u4ef6\u3002\u5b9e\u4f53\u5173\u7cfb\u56fe\u662f\u8fd9\u4e9b\u7ec4\u4ef6\u7684\u53ef\u89c6\u5316\u8868\u793a\u3002\u5728\u4e13\u4e1a\u73af\u5883\u4e2d\uff0c\u6e05\u6670\u5ea6\u81f3\u5173\u91cd\u8981\u3002\u56fe\u4e2d\u7684\u6b67\u4e49\u4f1a\u5bfc\u81f4\u4ee3\u7801\u4e2d\u7684\u6b67\u4e49\uff0c\u800c\u4ee3\u7801\u4e2d\u7684\u6b67\u4e49\u5219\u4f1a\u5bfc\u81f4\u751f\u4ea7\u73af\u5883\u4e2d\u7684\u9519\u8bef\u3002<\/p>\n<ul>\n<li><strong>\u5b9e\u4f53\uff1a<\/strong>\u5b83\u4eec\u4ee3\u8868\u73b0\u5b9e\u4e16\u754c\u4e2d\u7684\u5bf9\u8c61\u6216\u6982\u5ff5\u3002\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u5b83\u4eec\u5bf9\u5e94\u4e3a\u8868\u3002\u5b9e\u4f53\u5e94\u5f53\u662f\u5355\u6570\u4e14\u5177\u4f53\u7684\u3002\u907f\u514d\u4f7f\u7528\u8bf8\u5982\u201c&#8221;\u8fd9\u6837\u7684\u901a\u7528\u540d\u79f0\u3002&#8221;<code>\u7269\u54c1\u201d<\/code>\u800c\u5e94\u9009\u7528\u201c<code>\u4ea7\u54c1\u201d<\/code>\u6216\u201c<code>\u5e93\u5b58\u201d<\/code>.<\/li>\n<li><strong>\u5c5e\u6027\uff1a<\/strong>\u5b83\u4eec\u662f\u5b9e\u4f53\u7684\u5c5e\u6027\u3002\u5b83\u4eec\u6210\u4e3a\u8868\u4e2d\u7684\u5217\u3002\u5c5e\u6027\u5e94\u5f53\u662f\u539f\u5b50\u7684\uff0c\u5373\u53ea\u5305\u542b\u5355\u4e2a\u503c\uff0c\u800c\u975e\u5217\u8868\u6216\u590d\u6742\u5bf9\u8c61\u3002<\/li>\n<li><strong>\u5173\u7cfb\uff1a<\/strong>\u5b83\u4eec\u5b9a\u4e49\u4e86\u5b9e\u4f53\u4e4b\u95f4\u5982\u4f55\u4ea4\u4e92\u3002\u5173\u7cfb\u5c06\u4e00\u5f20\u8868\u4e2d\u7684\u4e00\u884c\u4e0e\u53e6\u4e00\u5f20\u8868\u4e2d\u7684\u4e00\u884c\u8fde\u63a5\u8d77\u6765\u3002\u7406\u89e3\u57fa\u6570\uff08Cardinality\uff09\u5728\u6b64\u81f3\u5173\u91cd\u8981\u3002<\/li>\n<\/ul>\n<p>\u8d44\u6df1\u5f00\u53d1\u8005\u5f3a\u8c03\uff0c\u56fe\u8868\u5fc5\u987b\u662f\u81ea\u6587\u6863\u5316\u7684\u3002\u5982\u679c\u5f00\u53d1\u4eba\u5458\u67e5\u770b ERD \u65f6\u4ecd\u9700\u5c31\u4e1a\u52a1\u903b\u8f91\u63d0\u51fa\u95ee\u9898\uff0c\u5219\u8bf4\u660e\u8bbe\u8ba1\u5931\u8d25\u4e86\u3002\u6bcf\u5f20\u8868\u548c\u6bcf\u4e00\u5217\u90fd\u5e94\u6709\u6e05\u6670\u7684\u76ee\u7684\uff0c\u4e14\u80fd\u4ece\u5176\u540d\u79f0\u548c\u4e0a\u4e0b\u6587\u4e2d\u63a8\u65ad\u51fa\u6765\u3002<\/p>\n<h2>\ud83c\udff7\ufe0f \u547d\u540d\u7ea6\u5b9a\u4e0e\u6807\u51c6<\/h2>\n<p>\u547d\u540d\u662f\u6a21\u5f0f\u4e2d\u6700\u663e\u773c\u7684\u65b9\u9762\uff0c\u5374\u5e38\u88ab\u89c6\u4e3a\u4e8b\u540e\u8003\u8651\u3002\u4e00\u81f4\u7684\u547d\u540d\u80fd\u964d\u4f4e\u5f00\u53d1\u4eba\u5458\u9605\u8bfb\u6a21\u5f0f\u65f6\u7684\u8ba4\u77e5\u8d1f\u8377\u3002\u5b83\u4e5f\u6709\u52a9\u4e8e\u81ea\u52a8\u5316\u4ee3\u7801\u751f\u6210\u5de5\u5177\u548c ORM \u6846\u67b6\u3002<\/p>\n<h3>\u8868\u540d<\/h3>\n<ul>\n<li><strong>\u590d\u6570\u5316\uff1a<\/strong>\u8868\u540d\u5e94\u4f7f\u7528\u590d\u6570\u540d\u8bcd\u3002\u201c<code>\u7528\u6237\u201d<\/code>\u4f18\u4e8e\u201c<code>\u7528\u6237\u201d<\/code>\u3002\u8fd9\u7b26\u5408\u8868\u5305\u542b\u4e00\u7ec4\u8bb0\u5f55\u7684\u6982\u5ff5\u3002<\/li>\n<li><strong>\u4e0b\u5212\u7ebf\uff1a<\/strong>\u91c7\u7528\u201c<code>snake_case<\/code>\u7528\u4e8e\u8868\u540d\u3002\u4e0e\u9a7c\u5cf0\u547d\u540d\u6cd5\u76f8\u6bd4\uff0c\u8fd9\u63d0\u9ad8\u4e86\u53ef\u8bfb\u6027\uff0c\u7279\u522b\u662f\u5728\u4e0d\u540c\u64cd\u4f5c\u7cfb\u7edf\u4e4b\u95f4\u5927\u5c0f\u5199\u654f\u611f\u6027\u53ef\u80fd\u4e0d\u4e00\u81f4\u7684\u73af\u5883\u4e2d\u3002<\/li>\n<li><strong>\u8303\u56f4\uff1a<\/strong>\u9664\u975e\u9700\u8981\u7528\u4e8e\u9886\u57df\u5206\u9694\uff0c\u5426\u5219\u907f\u514d\u4f7f\u7528\u524d\u7f00\u3002\u867d\u7136\u67d0\u4e9b\u56e2\u961f\u4f1a\u4f7f\u7528\u8bf8\u5982\u201c<code>tbl_<\/code>\u6216\u201c<code>db_<\/code>\uff0c\u73b0\u4ee3\u5de5\u5177\u901a\u5e38\u4f1a\u81ea\u52a8\u5904\u7406\u6b64\u95ee\u9898\u3002\u8bf7\u4fdd\u6301\u540d\u79f0\u7b80\u6d01\u3002<\/li>\n<\/ul>\n<h3>\u5217\u540d<\/h3>\n<ul>\n<li><strong>\u63cf\u8ff0\u6027\uff1a<\/strong>\u5217\u540d\u5e94\u80fd\u89e3\u91ca\u5176\u6240\u5305\u542b\u7684\u6570\u636e\uff0c\u800c\u65e0\u9700\u4f9d\u8d56\u5916\u90e8\u6587\u6863\u3002<code>created_at<\/code> \u4f18\u4e8e\u201c<code>ts<\/code>\u6216\u201c<code>time<\/code>.<\/li>\n<li><strong>\u5916\u952e\uff1a<\/strong>\u5c06\u5916\u952e\u5217\u547d\u540d\u4e3a\u4e0e\u6240\u5f15\u7528\u7684\u8868\u76f8\u5339\u914d\u3002\u5982\u679c\u5f15\u7528\u7684\u662f\u201c<code>Users<\/code>\u8868\uff0c\u5219\u8be5\u5217\u5e94\u4e3a\u201c<code>user_id<\/code>\u3002\u8fd9\u4f7f\u5f97\u8fde\u63a5\u6761\u4ef6\u4e00\u76ee\u4e86\u7136\u3002<\/li>\n<li><strong>\u5e03\u5c14\u503c\uff1a<\/strong>\u4f7f\u7528\u524d\u7f00\u5982\u201c<code>is_<\/code>, <code>has_<\/code>\u6216\u201c<code>can_<\/code>\u6765\u8868\u793a\u5e03\u5c14\u72b6\u6001\u3002\u793a\u4f8b\u5305\u62ec<code>is_active<\/code>, <code>has_subscription<\/code>\uff0c\u6216 <code>can_edit<\/code>.<\/li>\n<\/ul>\n<p>\u6574\u4e2a\u9879\u76ee\u7684\u4e00\u81f4\u6027\u6bd4\u5177\u4f53\u7ea6\u5b9a\u9009\u62e9\u66f4\u91cd\u8981\u3002\u4e00\u65e6\u6807\u51c6\u8fbe\u6210\u4e00\u81f4\uff0c\u5c31\u5fc5\u987b\u901a\u8fc7\u4ee3\u7801\u68c0\u67e5\u5de5\u5177\u6216\u540c\u884c\u8bc4\u5ba1\u6765\u5f3a\u5236\u6267\u884c\u3002<\/p>\n<h2>\ud83d\udd17 \u638c\u63e1\u5173\u7cfb\u4e0e\u57fa\u6570<\/h2>\n<p>\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u5f3a\u5927\u4e4b\u5904\u5728\u4e8e\u5176\u5173\u7cfb\u3002\u7ba1\u7406\u4e0d\u5f53\u8fd9\u4e9b\u5173\u7cfb\u662f\u5bfc\u81f4\u6570\u636e\u91cd\u590d\u548c\u5b8c\u6574\u6027\u9519\u8bef\u7684\u5e38\u89c1\u539f\u56e0\u3002\u9ad8\u7ea7\u5f00\u53d1\u4eba\u5458\u6839\u636e\u57fa\u6570\u5bf9\u5173\u7cfb\u8fdb\u884c\u5206\u7c7b\uff1a\u4e00\u4e2a\u5b9e\u4f53\u7684\u591a\u5c11\u4e2a\u5b9e\u4f8b\u4e0e\u53e6\u4e00\u4e2a\u5b9e\u4f53\u76f8\u5173\u8054\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5173\u7cfb\u7c7b\u578b<\/th>\n<th>\u63cf\u8ff0<\/th>\n<th>\u5b9e\u73b0\u65b9\u5f0f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u4e00\u5bf9\u4e00 (1:1)<\/td>\n<td>\u8868 A \u4e2d\u7684\u4e00\u6761\u8bb0\u5f55\u4e0e\u8868 B \u4e2d\u7684\u4e00\u6761\u8bb0\u5f55\u7cbe\u786e\u5bf9\u5e94\u3002<\/td>\n<td>\u5728\u5176\u4e2d\u4e00\u5f20\u8868\u4e2d\u653e\u7f6e\u552f\u4e00\u7684\u5916\u952e\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u4e00\u5bf9\u591a (1:N)<\/td>\n<td>\u8868 A \u4e2d\u7684\u4e00\u6761\u8bb0\u5f55\u4e0e\u8868 B \u4e2d\u7684\u591a\u6761\u8bb0\u5f55\u76f8\u5173\u8054\u3002<\/td>\n<td>\u5728\u8868 B \u4e2d\u653e\u7f6e\u4e00\u4e2a\u5f15\u7528\u8868 A \u7684\u5916\u952e\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u591a\u5bf9\u591a (M:N)<\/td>\n<td>\u8868 A \u4e2d\u7684\u8bb0\u5f55\u53ef\u4ee5\u4e0e\u8868 B \u4e2d\u7684\u591a\u6761\u8bb0\u5f55\u76f8\u5173\u8054\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002<\/td>\n<td>\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u4e24\u4e2a\u5916\u952e\u7684\u5173\u8054\u8868\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u4e00\u5bf9\u4e00\u5173\u7cfb<\/h3>\n<p>\u8fd9\u4e9b\u7c7b\u578b\u4e0d\u5982\u5176\u4ed6\u7c7b\u578b\u5e38\u89c1\uff0c\u4f46\u4f1a\u51fa\u73b0\u5728\u7279\u5b9a\u573a\u666f\u4e2d\uff0c\u4f8b\u5982\u5206\u79bb\u654f\u611f\u6570\u636e\u6216\u4e3a\u6027\u80fd\u800c\u62c6\u5206\u5927\u578b\u6570\u636e\u96c6\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a <code>Users<\/code>\u8868\u53ef\u80fd\u5b58\u50a8\u516c\u5f00\u7684\u914d\u7f6e\u6587\u4ef6\u6570\u636e\uff0c\u800c\u4e00\u4e2a <code>User_Details<\/code>\u8868\u5b58\u50a8\u79c1\u4eba\u4fe1\u606f\uff0c\u5982\u793e\u4f1a\u4fdd\u969c\u53f7\u7801\u3002\u8be5\u94fe\u63a5\u901a\u8fc7\u5916\u952e\u5217\u4e0a\u7684\u552f\u4e00\u7ea6\u675f\u6765\u5f3a\u5236\u6267\u884c\u3002<\/p>\n<h3>\u4e00\u5bf9\u591a\u5173\u7cfb<\/h3>\n<p>\u8fd9\u662f\u5173\u7cfb\u8bbe\u8ba1\u7684\u6838\u5fc3\u3002\u4e00\u4e2a <code>Order<\/code>\u8868\u4e0e\u4e00\u4e2a<code>OrderItems<\/code>\u8868\u3002\u4e00\u4e2a\u8ba2\u5355\u53ef\u4ee5\u5305\u542b\u591a\u4e2a\u5546\u54c1\u3002\u5916\u952e\u4f4d\u4e8e<code>OrderItems<\/code>\u8868\u4e2d\uff0c\u6307\u5411<code>Orders<\/code>\u8868\u3002\u8fd9\u79cd\u7ed3\u6784\u5141\u8bb8\u9ad8\u6548\u67e5\u8be2\uff0c\u800c\u65e0\u9700\u4e3a\u6bcf\u4e2a\u5546\u54c1\u91cd\u590d\u6574\u4e2a\u8ba2\u5355\u5934\u4fe1\u606f\u3002<\/p>\n<h3>\u591a\u5bf9\u591a\u5173\u7cfb<\/h3>\n<p>\u5728\u6807\u51c6\u5173\u7cfb\u7cfb\u7edf\u4e2d\uff0c\u4e24\u4e2a\u8868\u4e4b\u95f4\u65e0\u6cd5\u5efa\u7acb\u76f4\u63a5\u94fe\u63a5\u3002\u9700\u8981\u4e00\u4e2a\u8fde\u63a5\u8868\uff08\u901a\u5e38\u79f0\u4e3a\u5173\u8054\u5b9e\u4f53\uff09\u3002\u4f8b\u5982\uff0c\u94fe\u63a5<code>Students<\/code>\u548c<code>Courses<\/code>\u3002\u4e00\u4e2a\u5b66\u751f\u53ef\u4ee5\u9009\u4fee\u591a\u95e8\u8bfe\u7a0b\uff0c\u4e00\u95e8\u8bfe\u7a0b\u4e5f\u53ef\u4ee5\u6709\u591a\u4e2a\u5b66\u751f\u3002\u8fde\u63a5\u8868<code>Enrollments<\/code>\u5305\u542b<code>student_id<\/code>\u548c<code>course_id<\/code>\u3002\u8be5\u8868\u8fd8\u53ef\u4ee5\u5b58\u50a8\u9644\u52a0\u6570\u636e\uff0c\u4f8b\u5982\u6ce8\u518c\u65e5\u671f\u6216\u6210\u7ee9\u3002<\/p>\n<p>\u5728\u5efa\u6a21\u8fd9\u4e9b\u5173\u7cfb\u65f6\uff0c\u9700\u8003\u8651\u53ef\u9009\u6027\u3002\u7528\u6237\u662f\u5426\u5fc5\u987b\u62e5\u6709\u4e2a\u4eba\u8d44\u6599\uff1f\u5982\u679c\u662f\uff0c\u5219\u8be5\u5173\u7cfb\u662f\u5f3a\u5236\u7684\u3002\u5982\u679c\u7528\u6237\u53ef\u4ee5\u6ca1\u6709\u4e2a\u4eba\u8d44\u6599\u800c\u5b58\u5728\uff0c\u5219\u5916\u952e\u53ef\u4ee5\u4e3a\u7a7a\u3002\u5728\u56fe\u4e2d\u660e\u786e\u5b9a\u4e49\u8fd9\u4e00\u70b9\u53ef\u9632\u6b62\u5e94\u7528\u5c42\u51fa\u73b0\u903b\u8f91\u9519\u8bef\u3002<\/p>\n<h2>\ud83e\uddf1 \u89c4\u8303\u5316\u4e0e\u6570\u636e\u5b8c\u6574\u6027<\/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\u7136\u5e38\u88ab\u4f5c\u4e3a\u4e00\u5957\u50f5\u5316\u7684\u89c4\u5219\u6559\u6388\uff0c\u4f46\u9ad8\u7ea7\u5f00\u53d1\u4eba\u5458\u5c06\u5176\u89c6\u4e3a\u4e00\u4e2a\u8c31\u7cfb\u3002\u76ee\u6807\u662f\u5728\u6570\u636e\u7eaf\u5ea6\u4e0e\u67e5\u8be2\u6027\u80fd\u4e4b\u95f4\u53d6\u5f97\u5e73\u8861\u3002<\/p>\n<h3>\u7b2c\u4e00\u8303\u5f0f (1NF)<\/h3>\n<ul>\n<li>\u786e\u4fdd\u539f\u5b50\u6027\uff1a\u6bcf\u5217\u4ec5\u5305\u542b\u4e00\u4e2a\u503c\u3002<\/li>\n<li>\u786e\u4fdd\u5217\u7684\u72ec\u7acb\u6027\uff1a\u5355\u4e2a\u5355\u5143\u683c\u5185\u4e0d\u5f97\u5305\u542b\u91cd\u590d\u7ec4\u6216\u6570\u7ec4\u3002<\/li>\n<li>\u786e\u4fdd\u884c\u552f\u4e00\u6027\uff1a\u6bcf\u4e00\u884c\u5fc5\u987b\u53ef\u552f\u4e00\u6807\u8bc6\u3002<\/li>\n<\/ul>\n<h3>\u7b2c\u4e8c\u8303\u5f0f (2NF)<\/h3>\n<ul>\n<li>\u6ee1\u8db3 1NF \u8981\u6c42\u3002<\/li>\n<li>\u6d88\u9664\u90e8\u5206\u4f9d\u8d56\u3002\u6240\u6709\u975e\u4e3b\u952e\u5c5e\u6027\u5fc5\u987b\u4f9d\u8d56\u4e8e\u6574\u4e2a\u4e3b\u952e\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u4e3b\u952e\u7684\u4e00\u90e8\u5206\u3002\u5728\u5904\u7406\u590d\u5408\u952e\u65f6\u8fd9\u4e00\u70b9\u81f3\u5173\u91cd\u8981\u3002<\/li>\n<\/ul>\n<h3>\u7b2c\u4e09\u8303\u5f0f (3NF)<\/h3>\n<ul>\n<li>\u6ee1\u8db3\u7b2c\u4e8c\u8303\u5f0f\uff082NF\uff09\u8981\u6c42\u3002<\/li>\n<li>\u6d88\u9664\u4f20\u9012\u4f9d\u8d56\u3002\u975e\u4e3b\u952e\u5c5e\u6027\u4e0d\u5e94\u4f9d\u8d56\u4e8e\u5176\u4ed6\u975e\u4e3b\u952e\u5c5e\u6027\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4e00\u5f20\u8868\u5305\u542b<code>\u5458\u5de5ID<\/code>, <code>\u7ecf\u7406ID<\/code>\uff0c\u4ee5\u53ca<code>\u7ecf\u7406\u59d3\u540d<\/code>\uff0c\u5219\u7ecf\u7406\u59d3\u540d\u4f9d\u8d56\u4e8e\u7ecf\u7406ID\uff0c\u800c\u975e\u5458\u5de5ID\u3002\u5e94\u5c06\u7ecf\u7406\u8be6\u7ec6\u4fe1\u606f\u79fb\u81f3\u5355\u72ec\u7684\u8868\u4e2d\u3002<\/li>\n<\/ul>\n<p><strong>\u4f55\u65f6\u8fdb\u884c\u53cd\u89c4\u8303\u5316\uff1a<\/strong><br \/>\n\u4e25\u683c\u9075\u5faa\u7b2c\u4e09\u8303\u5f0f\uff083NF\uff09\u5e76\u4e0d\u603b\u662f\u6700\u4f73\u65b9\u6848\u3002\u5728\u8bfb\u5bc6\u96c6\u578b\u5e94\u7528\u4e2d\uff0c\u8fde\u63a5\u591a\u4e2a\u8868\u53ef\u80fd\u6210\u4e3a\u6027\u80fd\u74f6\u9888\u3002\u9ad8\u7ea7\u5de5\u7a0b\u5e08\u53ef\u80fd\u4f1a\u53cd\u89c4\u8303\u5316\u7279\u5b9a\u6570\u636e\u70b9\u4ee5\u964d\u4f4e\u8fde\u63a5\u590d\u6742\u5ea6\u3002\u4f8b\u5982\uff0c\u7f13\u5b58<code>\u7528\u6237\u540d<\/code>\u5728<code>\u8ba2\u5355<\/code>\u8868\u4e2d\u53ef\u80fd\u662f\u53ef\u63a5\u53d7\u7684\uff0c\u524d\u63d0\u662f\u7528\u6237\u540d\u5f88\u5c11\u66f4\u6539\u4e14\u8bfb\u53d6\u901f\u5ea6\u81f3\u5173\u91cd\u8981\u3002\u7136\u800c\uff0c\u8fd9\u4f1a\u5f15\u5165\u66f4\u65b0\u5f02\u5e38\u3002\u5982\u679c\u7528\u6237\u540d\u53d1\u751f\u53d8\u5316\uff0c\u5219\u5fc5\u987b\u66f4\u65b0\u6bcf\u6761\u8ba2\u5355\u8bb0\u5f55\u3002\u8fd9\u79cd\u6743\u8861\u5fc5\u987b\u88ab\u8bb0\u5f55\u5e76\u7406\u89e3\u3002<\/p>\n<h2>\ud83d\udd11 \u952e\u9009\u62e9\u7b56\u7565<\/h2>\n<p>\u4e3b\u952e\uff08PK\uff09\u662f\u884c\u7684\u552f\u4e00\u6807\u8bc6\u7b26\u3002\u952e\u7684\u9009\u62e9\u4f1a\u5f71\u54cd\u6570\u636e\u5e93\u5f15\u64ce\u5982\u4f55\u7d22\u5f15\u6570\u636e\u4ee5\u53ca\u5982\u4f55\u5efa\u7acb\u5173\u7cfb\u3002<\/p>\n<h3>\u81ea\u7136\u952e<\/h3>\n<p>\u81ea\u7136\u952e\u4f9d\u8d56\u4e8e\u73b0\u6709\u7684\u4e1a\u52a1\u6570\u636e\uff0c\u4f8b\u5982\u793e\u4f1a\u4fdd\u969c\u53f7\u6216\u7535\u5b50\u90ae\u4ef6\u5730\u5740\u3002\u5176\u4f18\u52bf\u5728\u4e8e\u8be5\u952e\u5177\u6709\u73b0\u5b9e\u4e16\u754c\u7684\u542b\u4e49\u3002\u5176\u52a3\u52bf\u5728\u4e8e\u81ea\u7136\u952e\u53ef\u80fd\u4f1a\u53d1\u751f\u53d8\u5316\uff0c\u4e14\u901a\u5e38\u8fc7\u957f\uff0c\u4e0d\u5229\u4e8e\u9ad8\u6548\u7d22\u5f15\u3002\u5c06\u7535\u5b50\u90ae\u4ef6\u7b49\u552f\u4e00\u6807\u8bc6\u7b26\u7528\u4f5c\u5916\u952e\u4f1a\u663e\u8457\u589e\u52a0\u5176\u4ed6\u8868\u7684\u5927\u5c0f\u3002<\/p>\n<h3>\u4ee3\u7406\u952e<\/h3>\n<p>\u4ee3\u7406\u952e\u662f\u4e00\u79cd\u4eba\u5de5\u6807\u8bc6\u7b26\uff0c\u901a\u5e38\u662f\u81ea\u589e\u6574\u6570\u6216UUID\u3002\u5b83\u6ca1\u6709\u4e1a\u52a1\u542b\u4e49\u3002\u8fd9\u662f\u5927\u591a\u6570\u73b0\u4ee3\u7cfb\u7edf\u7684\u9996\u9009\u65b9\u6cd5\u3002\u5373\u4f7f\u5e95\u5c42\u6570\u636e\u53d1\u751f\u53d8\u5316\uff0c\u5b83\u4e5f\u80fd\u4fdd\u6301\u7a33\u5b9a\u3002\u5b83\u7d27\u51d1\uff0c\u4f7f\u7d22\u5f15\u67e5\u627e\u66f4\u5feb\u3002\u5b83\u8fd8\u7b80\u5316\u4e86\u5173\u7cfb\uff0c\u56e0\u4e3a\u5916\u952e\u66f4\u5c0f\u4e14\u66f4\u4e00\u81f4\u3002<\/p>\n<ul>\n<li><strong>\u6574\u6570\u4ee3\u7406\u952e\uff1a<\/strong>\u7d22\u5f15\u548c\u5b58\u50a8\u6548\u7387\u9ad8\u3002\u9002\u7528\u4e8e\u9ad8\u5bb9\u91cf\u4e8b\u52a1\u7cfb\u7edf\u3002<\/li>\n<li><strong>UUID\uff1a<\/strong>\u9002\u7528\u4e8e\u9700\u8981\u5728\u591a\u4e2a\u8282\u70b9\u95f4\u4fdd\u8bc1\u552f\u4e00\u6027\u4e14\u65e0\u9700\u534f\u8c03\u7684\u5206\u5e03\u5f0f\u7cfb\u7edf\u3002\u5b83\u4eec\u907f\u514d\u4e86ID\u5e8f\u5217\u4e2d\u7684\u95f4\u9699\uff0c\u4f46\u6bd4\u6574\u6570\u66f4\u5927\uff0c\u4e14\u5bf9\u7d22\u5f15\u7684\u53cb\u597d\u5ea6\u8f83\u4f4e\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udee1\ufe0f \u7ea6\u675f\u4e0e\u6570\u636e\u5b8c\u6574\u6027<\/h2>\n<p>\u6570\u636e\u5e93\u7684\u8d28\u91cf\u53d6\u51b3\u4e8e\u5b88\u62a4\u5b83\u7684\u89c4\u5219\u3002\u7ea6\u675f\u786e\u4fdd\u6570\u636e\u4fdd\u6301\u51c6\u786e\u548c\u4e00\u81f4\uff0c\u65e0\u8bba\u5e94\u7528\u7a0b\u5e8f\u5982\u4f55\u4e0e\u5176\u4ea4\u4e92\u3002<\/p>\n<ul>\n<li><strong>NOT NULL\uff08\u975e\u7a7a\uff09\uff1a<\/strong>\u5f3a\u5236\u8981\u6c42\u5fc5\u586b\u5b57\u6bb5\u59cb\u7ec8\u6709\u503c\u3002\u8fd9\u9632\u6b62\u6570\u636e\u5e93\u5b58\u50a8\u53ef\u80fd\u7834\u574f\u5e94\u7528\u903b\u8f91\u7684\u4e0d\u5b8c\u6574\u8bb0\u5f55\u3002<\/li>\n<li><strong>UNIQUE\uff08\u552f\u4e00\uff09\uff1a<\/strong>\u9632\u6b62\u5728\u5fc5\u987b\u552f\u4e00\u7684\u5217\u4e2d\u51fa\u73b0\u91cd\u590d\u6761\u76ee\uff0c\u4f8b\u5982\u7535\u5b50\u90ae\u4ef6\u5730\u5740\u6216\u4ea7\u54c1SKU\u3002<\/li>\n<li><strong>\u68c0\u67e5\uff1a<\/strong>  \u5141\u8bb8\u81ea\u5b9a\u4e49\u903b\u8f91\u3002\u4f8b\u5982\uff0c\u786e\u4fdd\u6298\u6263\u767e\u5206\u6bd4\u5728 0 \u5230 100 \u4e4b\u95f4\u3002<\/li>\n<li><strong>\u9ed8\u8ba4\u503c\uff1a<\/strong>  \u63d0\u4f9b\u5408\u7406\u7684\u9ed8\u8ba4\u56de\u9000\u503c\u3002\u5982\u679c\u7528\u6237\u672a\u6307\u5b9a\u65f6\u533a\uff0c\u5219\u9ed8\u8ba4\u4e3a UTC\u3002<\/li>\n<\/ul>\n<p>\u5f15\u7528\u5b8c\u6574\u6027\u7ea6\u675f\u5bf9\u4e8e\u7ef4\u62a4\u5173\u7cfb\u81f3\u5173\u91cd\u8981\u3002<code>ON DELETE<\/code> \u89c4\u5219\u89c4\u5b9a\u4e86\u5f53\u7236\u8bb0\u5f55\u88ab\u5220\u9664\u65f6\u4f1a\u53d1\u751f\u4ec0\u4e48\u3002\u9009\u9879\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u7ea7\u8054\u5220\u9664\uff1a<\/strong> \u81ea\u52a8\u5220\u9664\u5b50\u8bb0\u5f55\u3002\u8bf7\u8c28\u614e\u4f7f\u7528\uff0c\u56e0\u4e3a\u5b83\u53ef\u80fd\u5bfc\u81f4\u610f\u5916\u6570\u636e\u4e22\u5931\u3002<\/li>\n<li><strong>\u9650\u5236\uff1a<\/strong> \u5982\u679c\u5b58\u5728\u5b50\u8bb0\u5f55\uff0c\u5219\u963b\u6b62\u5220\u9664\u3002\u8fd9\u8feb\u4f7f\u5e94\u7528\u7a0b\u5e8f\u663e\u5f0f\u5904\u7406\u903b\u8f91\u3002<\/li>\n<li><strong>\u8bbe\u4e3a\u7a7a\uff1a<\/strong> \u5982\u679c\u7236\u8bb0\u5f55\u88ab\u5220\u9664\uff0c\u5219\u5c06\u5916\u952e\u8bbe\u4e3a NULL\u3002\u8fd9\u4ec5\u5728\u5217\u5141\u8bb8 NULL \u503c\u65f6\u6709\u6548\u3002<\/li>\n<\/ul>\n<h2>\u26a1 \u6027\u80fd\u4e0e\u7d22\u5f15\u8003\u8651<\/h2>\n<p>\u4e3a\u6027\u80fd\u8fdb\u884c\u8bbe\u8ba1\u59cb\u4e8e\u6a21\u5f0f\u5c42\u9762\u3002\u867d\u7136\u67e5\u8be2\u53ef\u4ee5\u5728\u540e\u671f\u8fdb\u884c\u4f18\u5316\uff0c\u4f46\u7cdf\u7cd5\u7684\u6a21\u5f0f\u53ef\u80fd\u4f7f\u4f18\u5316\u53d8\u5f97\u4e0d\u53ef\u80fd\u3002<\/p>\n<h3>\u7d22\u5f15\u7b56\u7565<\/h3>\n<ul>\n<li><strong>\u4e3b\u952e\uff1a<\/strong> \u81ea\u52a8\u5efa\u7acb\u7d22\u5f15\u3002<\/li>\n<li><strong>\u5916\u952e\uff1a<\/strong> \u5e94\u5efa\u7acb\u7d22\u5f15\u4ee5\u52a0\u5feb\u8fde\u63a5\u64cd\u4f5c\u548c\u7ea6\u675f\u68c0\u67e5\u7684\u901f\u5ea6\u3002<\/li>\n<li><strong>\u67e5\u8be2\u5217\uff1a<\/strong> \u5728\u4ee5\u4e0b\u5b50\u53e5\u4e2d\u9891\u7e41\u4f7f\u7528\u7684\u5217\uff1a<code>WHERE<\/code>, <code>ORDER BY<\/code>\uff0c\u6216 <code>GROUP BY<\/code> \u5b50\u53e5\u4e2d\u7684\u5217\u5e94\u5efa\u7acb\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<p>\u7136\u800c\uff0c\u7d22\u5f15\u5e76\u975e\u6ca1\u6709\u4ee3\u4ef7\u3002\u5b83\u4eec\u4f1a\u5360\u7528\u78c1\u76d8\u7a7a\u95f4\u5e76\u964d\u4f4e\u5199\u5165\u64cd\u4f5c\u7684\u901f\u5ea6\u3002\u6bcf\u6b21\u63d2\u5165\u3001\u66f4\u65b0\u6216\u5220\u9664\u90fd\u5fc5\u987b\u66f4\u65b0\u7d22\u5f15\u3002\u9ad8\u7ea7\u5f00\u53d1\u4eba\u5458\u907f\u514d\u8fc7\u5ea6\u7d22\u5f15\u3002\u4ed6\u4eec\u5728\u6dfb\u52a0\u7d22\u5f15\u4e4b\u524d\u4f1a\u5206\u6790\u5b9e\u9645\u7684\u67e5\u8be2\u6a21\u5f0f\u3002<\/p>\n<h3>\u6570\u636e\u7c7b\u578b<\/h3>\n<p>\u9009\u62e9\u6b63\u786e\u7684\u6570\u636e\u7c7b\u578b\u4f1a\u5f71\u54cd\u5b58\u50a8\u7a7a\u95f4\u548c\u901f\u5ea6\u3002\u5bf9\u65e5\u671f\u6216\u6570\u5b57\u4f7f\u7528\u901a\u7528\u5b57\u7b26\u4e32\u7c7b\u578b\u4f1a\u6d6a\u8d39\u7a7a\u95f4\u5e76\u964d\u4f4e\u6bd4\u8f83\u901f\u5ea6\u3002\u8bf7\u4f7f\u7528<code>TIMESTAMP<\/code>\u8868\u793a\u65e5\u671f\u548c\u65f6\u95f4\u3002\u8bf7\u4f7f\u7528<code>DECIMAL<\/code>\u8868\u793a\u8d27\u5e01\u4ee5\u907f\u514d\u6d6e\u70b9\u6570\u8bef\u5dee\u3002\u8bf7\u4f7f\u7528<code>BOOLEAN<\/code>\u8868\u793a\u771f\/\u5047\u72b6\u6001\uff0c\u800c\u4e0d\u662f\u6574\u6570\u6216\u5b57\u7b26\u4e32\u3002<\/p>\n<h2>\ud83d\udd04 \u6f14\u8fdb\u4e0e\u7ef4\u62a4<\/h2>\n<p>\u8f6f\u4ef6\u9700\u6c42\u4f1a\u53d1\u751f\u53d8\u5316\u3002\u4eca\u5929\u6709\u6548\u7684\u6a21\u5f0f\u53ef\u80fd\u5728\u4e00\u5e74\u540e\u5c31\u4f1a\u8fc7\u65f6\u3002\u9759\u6001\u56fe\u8868\u662f\u4e00\u79cd\u8d1f\u62c5\u3002\u5b9e\u4f53\u5173\u7cfb\u56fe\uff08ERD\uff09\u5fc5\u987b\u968f\u5e94\u7528\u7a0b\u5e8f\u4e00\u540c\u6f14\u8fdb\u3002<\/p>\n<h3>\u6a21\u5f0f\u7684\u7248\u672c\u63a7\u5236<\/h3>\n<p>\u6a21\u5f0f\u53d8\u66f4\u5e94\u50cf\u4ee3\u7801\u4e00\u6837\u5bf9\u5f85\u3002\u5c06\u8fc1\u79fb\u811a\u672c\u5b58\u50a8\u5728\u7248\u672c\u63a7\u5236\u7cfb\u7edf\u4e2d\u3002\u8fd9\u4f7f\u56e2\u961f\u80fd\u591f\u8ddf\u8e2a\u53d8\u66f4\u5185\u5bb9\u3001\u53d8\u66f4\u8005\u4ee5\u53ca\u53d8\u66f4\u65f6\u95f4\u3002\u5982\u679c\u8fc1\u79fb\u5f15\u53d1\u95ee\u9898\uff0c\u8fd8\u53ef\u4ee5\u5b9e\u73b0\u56de\u6eda\u3002\u5207\u52ff\u5728\u6ca1\u6709\u811a\u672c\u7684\u60c5\u51b5\u4e0b\u624b\u52a8\u4fee\u6539\u751f\u4ea7\u6570\u636e\u5e93\u3002<\/p>\n<h3>\u6587\u6863\u89c4\u8303<\/h3>\n<ul>\n<li><strong>\u6ce8\u91ca\uff1a<\/strong>\u5728\u6570\u636e\u5e93\u4e2d\u4f7f\u7528\u6ce8\u91ca\u6765\u89e3\u91ca\u65e0\u6cd5\u901a\u8fc7\u7ea6\u675f\u5f3a\u5236\u6267\u884c\u7684\u590d\u6742\u903b\u8f91\u6216\u4e1a\u52a1\u89c4\u5219\u3002<\/li>\n<li><strong>\u56fe\u8868\u66f4\u65b0\uff1a<\/strong>\u5982\u679c\u4ee3\u7801\u53d1\u751f\u53d8\u5316\uff0c\u56fe\u8868\u4e5f\u5fc5\u987b\u968f\u4e4b\u66f4\u65b0\u3002\u8fc7\u65f6\u7684\u56fe\u8868\u4f1a\u5bfc\u81f4\u5165\u804c\u57f9\u8bad\u6216\u8c03\u8bd5\u8fc7\u7a0b\u4e2d\u7684\u56f0\u60d1\u548c\u65f6\u95f4\u6d6a\u8d39\u3002<\/li>\n<li><strong>\u53d8\u66f4\u65e5\u5fd7\uff1a<\/strong>\u7ef4\u62a4\u91cd\u8981\u7ed3\u6784\u53d8\u66f4\u7684\u65e5\u5fd7\u3002\u8fd9\u6709\u52a9\u4e8e\u5728\u591a\u5e74\u540e\u7406\u89e3\u4e3a\u4f55\u505a\u51fa\u7279\u5b9a\u7684\u8bbe\u8ba1\u51b3\u7b56\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udeab \u5e38\u89c1\u9677\u9631\u4e0e\u89c4\u907f<\/h2>\n<p>\u5373\u4f7f\u662f\u7ecf\u9a8c\u4e30\u5bcc\u7684\u56e2\u961f\u4e5f\u4f1a\u72af\u9519\u3002\u8bc6\u522b\u5e38\u89c1\u7684\u5931\u8d25\u6a21\u5f0f\u6709\u52a9\u4e8e\u9884\u9632\u3002<\/p>\n<ul>\n<li><strong>\u5faa\u73af\u4f9d\u8d56\uff1a<\/strong>\u8868 A \u4f9d\u8d56\u4e8e\u8868 B\uff0c\u800c\u8868 B \u53c8\u4f9d\u8d56\u4e8e\u8868 A\u3002\u8fd9\u4f1a\u5728\u521b\u5efa\u6216\u5220\u9664\u65f6\u9020\u6210\u6b7b\u9501\u3002\u901a\u8fc7\u6682\u65f6\u5141\u8bb8\u7a7a\u503c\u6216\u4f7f\u7528\u7b2c\u4e09\u5f20\u8868\u6765\u6253\u7834\u5faa\u73af\u3002<\/li>\n<li><strong>\u8fc7\u5ea6\u89c4\u8303\u5316\uff1a<\/strong>\u4e3a\u7410\u788e\u5173\u7cfb\u521b\u5efa\u8fc7\u591a\u8868\u4f1a\u5bfc\u81f4\u67e5\u8be2\u590d\u6742\u4e14\u96be\u4ee5\u7ef4\u62a4\u3002\u6709\u65f6\uff0c\u5355\u5f20\u8868\u5c31\u8db3\u591f\u4e86\u3002<\/li>\n<li><strong>\u6a21\u7cca\u7684\u5916\u952e\uff1a<\/strong>\u540d\u4e3a<code>id<\/code>\u7684\u5217\u51fa\u73b0\u5728\u591a\u4e2a\u8868\u4e2d\u4e14\u7f3a\u4e4f\u4e0a\u4e0b\u6587\u65f6\uff0c\u53ef\u80fd\u5f15\u8d77\u6df7\u6dc6\u3002\u59cb\u7ec8\u4f7f\u7528<code>table_id<\/code>\u8fdb\u884c\u547d\u540d\u3002<\/li>\n<li><strong>\u5ffd\u7565\u8f6f\u5220\u9664\uff1a<\/strong>\u6c38\u4e45\u5220\u9664\u6570\u636e\u901a\u5e38\u662f\u4e0d\u53ef\u9006\u7684\u3002\u901a\u8fc7\u6dfb\u52a0\u4e00\u4e2a\u201c<code>is_deleted\"<\/code>\u201d\u6807\u5fd7\u5e76\u5728\u5176\u4e0a\u5efa\u7acb\u7d22\u5f15\u6765\u8bbe\u8ba1\u8f6f\u5220\u9664\u529f\u80fd\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udcdd \u9ad8\u7ea7\u522b\u8003\u91cf\u8981\u70b9\u603b\u7ed3<\/h2>\n<p>\u6784\u5efa\u9ad8\u8d28\u91cf\u7684\u6570\u636e\u6a21\u578b\u9700\u8981\u7406\u8bba\u77e5\u8bc6\u548c\u5b9e\u8df5\u7ecf\u9a8c\u7684\u7ed3\u5408\u3002\u4ec5\u4ec5\u77e5\u9053\u5916\u952e\u662f\u4ec0\u4e48\u662f\u4e0d\u591f\u7684\uff1b\u4f60\u5fc5\u987b\u7406\u89e3\u5b83\u5982\u4f55\u5f71\u54cd\u67e5\u8be2\u8ba1\u5212\u548c\u4e8b\u52a1\u9501\u5b9a\u3002\u4ee5\u4e0b\u6e05\u5355\u603b\u7ed3\u4e86\u7a33\u5065\u8bbe\u8ba1\u7684\u5173\u952e\u884c\u52a8\u3002<\/p>\n<ul>\n<li>\u2705 \u59cb\u7ec8\u4f7f\u7528\u590d\u6570\u5f62\u5f0f\u7684\u86c7\u5f62\u547d\u540d\u7ea6\u5b9a\u3002<\/li>\n<li>\u2705 \u660e\u786e\u5b9a\u4e49\u5173\u7cfb\u5e76\u6307\u5b9a\u6b63\u786e\u7684\u57fa\u6570\u3002<\/li>\n<li>\u2705 \u5e94\u7528\u89c4\u8303\u5316\u539f\u5219\uff0c\u4f46\u5141\u8bb8\u6218\u7565\u6027\u53cd\u89c4\u8303\u5316\u3002<\/li>\n<li>\u2705 \u4f18\u5148\u4f7f\u7528\u4ee3\u7406\u952e\u8fdb\u884c\u5185\u90e8\u6807\u8bc6\u3002<\/li>\n<li>\u2705 \u5728\u6570\u636e\u5e93\u5c42\u9762\u5b9e\u65bd\u7ea6\u675f\uff0c\u800c\u4e0d\u4ec5\u4ec5\u5728\u5e94\u7528\u5c42\u3002<\/li>\n<li>\u2705 \u5bf9\u5916\u952e\u548c\u9891\u7e41\u67e5\u8be2\u7684\u5217\u5efa\u7acb\u7d22\u5f15\u3002<\/li>\n<li>\u2705 \u5bf9\u6240\u6709\u67b6\u6784\u53d8\u66f4\u8fdb\u884c\u7248\u672c\u63a7\u5236\u3002<\/li>\n<li>\u2705 \u4fdd\u6301\u56fe\u8868\u4e0e\u5b9e\u9645\u6570\u636e\u5e93\u72b6\u6001\u540c\u6b65\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u9075\u5faa\u8fd9\u4e9b\u5b9e\u8df5\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u6784\u5efa\u51fa\u5177\u6709\u5f39\u6027\u3001\u6613\u4e8e\u7406\u89e3\u4e14\u80fd\u968f\u4e1a\u52a1\u6210\u957f\u7684\u7cfb\u7edf\u3002\u5728\u521d\u59cb\u8bbe\u8ba1\u9636\u6bb5\u6295\u5165\u7684\u52aa\u529b\u5c06\u5728\u51cf\u5c11\u6280\u672f\u503a\u52a1\u548c\u540e\u7eed\u66f4\u987a\u7545\u7684\u8fd0\u8425\u4e2d\u83b7\u5f97\u56de\u62a5\u3002\u6570\u636e\u662f\u4efb\u4f55\u5e94\u7528\u6700\u5b9d\u8d35\u7684\u8d44\u4ea7\uff1b\u4ee5\u4e25\u8c28\u7684\u6001\u5ea6\u5bf9\u5f85\u5176\u7ed3\u6784\u662f\u8d44\u6df1\u4e13\u4e1a\u4eba\u58eb\u7684\u6807\u5fd7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8bbe\u8ba1\u5e94\u7528\u7a0b\u5e8f\u7684\u9aa8\u5e72\u7ed3\u6784\uff0c\u7edd\u4e0d\u4ec5\u4ec5\u662f\u8f93\u5165\u8868\u5b9a\u4e49\u90a3\u4e48\u7b80\u5355\u3002\u8fd9\u662f\u4e00&hellip;<\/p>\n","protected":false},"author":1,"featured_media":1731,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"ERD 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