{"id":1615,"date":"2020-11-24T21:04:51","date_gmt":"2020-11-24T13:04:51","guid":{"rendered":"https:\/\/www.yusian.com\/blog\/?p=1615"},"modified":"2020-11-28T15:30:26","modified_gmt":"2020-11-28T07:30:26","slug":"%e6%95%b0%e6%8d%ae%e5%ba%93%e8%ae%be%e8%ae%a1%e7%9a%84%e4%b8%80%e8%88%ac%e8%8c%83%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/database\/2020\/11\/24\/2104511615.html","title":{"rendered":"\u6570\u636e\u5e93\u8bbe\u8ba1\u7684\u4e00\u822c\u8303\u5f0f"},"content":{"rendered":"<h2>1\u3001\u6570\u636e\u5e93\u8868\u8bbe\u8ba1\u7684\u51e0\u79cd\u60c5\u51b5<\/h2>\n<pre><code class=\"language-sql line-numbers\">\/*\n\u6570\u636e\u5e93\u8bbe\u8ba1\uff1a\n    1\u3001\u4e00\u5bf9\u4e00\n        \u6dfb\u52a0\u552f\u4e00\u5916\u952e\u6307\u5411\u53e6\u4e00\u5f20\u8868\u7684\u4e3b\u952e\n    2\u3001\u4e00\u5bf9\u591a\n        \u591a\u7684\u4e00\u65b9\u8bbe\u7f6e\u5916\u952e\u6307\u5411\u4e00\u7684\u4e00\u65b9\u4e3b\u952e\n    3\u3001\u591a\u5bf9\u591a\n        \u501f\u52a9\u7b2c\u4e09\u5f20\u8868\u6765\u5b9e\u73b0\u5173\u8054\uff0c\u7b2c\u4e09\u5f20\u8868\u5206\u522b\u8bbe\u7f6e2\u4e2a\u5b57\u6bb5\u8bbe\u7f6e\u5916\u952e\u5206\u522b\u6307\u5411\u4e24\u5f20\u8868\u7684\u4e3b\u952e\uff0c\u5e76\u4e14\u8bbe\u7f6e\u4e3a\u8054\u5408\u4e3b\u952e\n*\/\n\/*\n    \u65c5\u6e38\u5206\u7c7b:categary\n    \u65c5\u6e38\u7ebf\u8def:line\n    \u7528\u6237:user\n    \u65c5\u6e38\u5206\u7c7b(\u4e00) --- \u65c5\u6e38\u7ebf\u8def(\u591a)\n    \u7528\u6237(\u591a) --- \u65c5\u6e38\u7ebf\u8def(\u591a)\n*\/\n\n-- \u7528\u6237\u8868\uff1aid, username, gender, age\uff0c\u4e3b\u952eid\uff0c\u81ea\u589e\u957f\nCREATE TABLE tab_user (\n    id INT PRIMARY KEY auto_increment,\n    username VARCHAR ( 32 ),\n    gender VARCHAR ( 1 ),\n    age INT \n) CHARACTER SET utf8mb4;\n\n-- \u5206\u7c7b\u8868\uff1aid, cat_name\uff0c\u4e3b\u952eid\u81ea\u589e\u957f\nCREATE TABLE tab_category (\n    id INT PRIMARY KEY auto_increment,\n    cat_name VARCHAR ( 32 ) \n) CHARACTER SET utf8mb4;\n\n-- \u7ebf\u8def\u8868\uff1aid, line_name, cat_id\uff0c\u5916\u952ecat_id\u7ea6\u675f\u5206\u7c7b\u8868\u7684\u4e3b\u952eid\nCREATE TABLE tab_line (\n    id INT PRIMARY KEY auto_increment,\n    line_name VARCHAR ( 32 ),\n    cat_id INT,\n    FOREIGN KEY ( cat_id ) REFERENCES tab_category ( id ) \n) CHARACTER SET utf8mb4;\n\n-- \u6536\u85cf\u8868\uff1aid, user_id, line_id\uff0c\u8054\u5408\u4e3b\u952euser_id\u4e0eline_id\uff0c\u5e76\u4e14\u8fd9\u4e24\u4e2a\u5b57\u6bb5\u5206\u522b\u4e3a\u5916\u952e\u7528\u6237\u8868\u4e3b\u952e\u3001\u7ebf\u8def\u8868\u4e3b\u952e\nCREATE TABLE tab_favori (\n    user_id INT,\n    line_id INT,\n    PRIMARY KEY ( user_id, line_id ),\n    FOREIGN KEY ( user_id ) REFERENCES tab_user ( id ),\n    FOREIGN KEY ( line_id ) REFERENCES tab_line ( id ) \n) CHARACTER SET utf8mb4;\n\n<\/code><\/pre>\n<h2>2\u3001\u6570\u636e\u5e93\u8868\u8bbe\u8ba1\u7684\u4e09\u79cd\u8303\u5f0f<\/h2>\n<pre><code class=\"language-sql line-numbers\">\/*\n    \u6570\u636e\u5e93\u8bbe\u8ba1\u8303\u5f0f\n    1\u3001\u7b2c\u4e00\u8303\u5f0f\uff1a1NF\uff0c\u6bcf\u4e00\u5217\u90fd\u662f\u4e0d\u53ef\u5206\u5272\u7684\u539f\u5b50\u9879\n        \u5b58\u5728\u7684\u95ee\u9898\uff1a\n            1\u3001\u6570\u636e\u5197\u4f59\uff1b\n            2\u3001\u90e8\u5206\u5b57\u6bb5\u6570\u636e\u65e0\u6cd5\u65b0\u589e\uff1b\n            3\u3001\u90e8\u5206\u5b57\u6bb5\u65e0\u6cd5\u65b0\u5220\u9664\uff1b\n    2\u3001\u7b2c\u4e8c\u8303\u5f0f\uff1a2NF\uff0c\u57281NF\u7684\u7684\u57fa\u7840\u4e0a\uff0c\u975e\u7801\u5c5e\u6027\u5fc5\u987b\u5b8c\u5168\u4f9d\u8d56\u4e8e\u5019\u9009\u7801\uff08\u57281NF\u7684\u57fa\u7840\u4e0a\u6d88\u9664\u975e\u4e3b\u5c5e\u6027\u5bf9\u4e3b\u7801\u7684\u90e8\u5206\u51fd\u6570\u4f9d\u8d56\uff09\n        \u76f8\u5173\u6982\u5ff5\n            1\u3001\u51fd\u6570\u4f9d\u8d56\uff1aA--&gt;B\uff0c\u5982\u679c\u901a\u8fc7A\u5c5e\u6027\u7684\u503c\uff0c\u53ef\u4ee5\u786e\u5b9a\u552f\u4e00B\u5c5e\u6027\u503c\u3002\u5219\u79f0B\u4f9d\u8d56\u4e8eA\n                \u5b66\u53f7--&gt;\u59d3\u540d\uff0c\uff08\u5b66\u53f7\uff0c\u8bfe\u7a0b\u540d\u79f0\uff09--&gt; \u5206\u6570\n            2\u3001\u5b8c\u5168\u51fd\u6570\u4f9d\u8d56\uff1aA--&gt;B\uff0c\u5982\u679cA\u662f\u5c5e\u6027\u7ec4\uff0cB\u7684\u786e\u5b9a\u4f9d\u8d56\u4e8eA\u4e2d\u7684\u6240\u6709\u5c5e\u6027\u503c\n                \uff08\u5b66\u53f7\uff0c\u8bfe\u7a0b\u540d\u79f0\uff09--&gt; \u5206\u6570\n            3\u3001\u90e8\u5206\u51fd\u6570\u4f9d\u8d56\uff1aA--&gt;B\uff0c\u5982\u679cA\u662f\u5c5e\u6027\u7ec4\uff0cB\u7684\u786e\u5b9a\u53ea\u9700\u8981A\u4e2d\u7684\u90e8\u5206\u5c5e\u6027\u503c\n                \uff08\u5b66\u53f7\uff0c\u8bfe\u7a0b\u540d\u79f0\uff09--&gt; \u59d3\u540d\n            4\u3001\u4f20\u9012\u51fd\u6570\u4f9d\u8d56\uff1aA--&gt;B--&gt;C\uff0c\u5982\u679cA\u5c5e\u6027\u53ef\u4ee5\u786e\u5b9a\u552f\u4e00\u5c5e\u6027B\u7684\u503c\uff0c\u518d\u901a\u8fc7B\u5c5e\u6027\uff0c\u53ef\u4ee5\u786e\u5b9a\u552f\u4e00C\u5c5e\u6027\u7684\u503c\uff0c\u5219\u79f0C\u4f20\u9012\u51fd\u6570\u4f9d\u8d56A\n                \u5b66\u53f7--&gt;\u7cfb\u540d--&gt;\u7cfb\u4e3b\u4efb\n            5\u3001\u5728\u4e00\u4e2a\u8868\u4e2d\uff0c\u5982\u679c\u4e00\u4e2a\u5c5e\u6027\u6216\u4e00\u4e2a\u5c5e\u6027\u7ec4\uff0c\u88ab\u5176\u4ed6\u6240\u6709\u5c5e\u6027\u5b8c\u5168\u4f9d\u8d56\uff0c\u5219\u79f0\u8fd9\u4e2a\u5c5e\u6027(\u5c5e\u6027\u7ec4)\u8be5\u8868\u7684\u7801\n    3\u3001\u7b2c\u4e09\u8303\u5f0f\uff1a3NF\uff0c\u57282NF\u7684\u57fa\u7840\u4e0a\uff0c\u4efb\u4f55\u975e\u4e3b\u5c5e\u6027\u4e0d\u4f9d\u8d56\u4e8e\u5176\u4ed6\u975e\u4e3b\u5c5e\u6027\uff08\u57282NF\u57fa\u7840\u4e0a\u6d88\u9664\u4f20\u9012\u4f9d\u8d56\uff09\n\n    \u603b\u7ed3\uff1a\u7b2c\u4e00\u8303\u5f0f\uff0c\u5b57\u6bb5\u4e0d\u53ef\u5206\u5272\uff1b\u7b2c\u4e8c\u8303\u5f0f\uff0c\u8981\u6709\u4e3b\u952e\uff0c\u7b2c\u4e09\u8303\u5f0f\uff0c\u5b57\u6bb5\u5185\u5bb9\u4e0d\u91cd\u590d\n*\/\n\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u6570\u636e\u5e93\u8868\u8bbe\u8ba1\u7684\u51e0\u79cd\u60c5\u51b5 \/* \u6570\u636e\u5e93\u8bbe\u8ba1\uff1a 1\u3001\u4e00\u5bf9\u4e00 \u6dfb\u52a0\u552f\u4e00\u5916\u952e\u6307\u5411\u53e6\u4e00\u5f20\u8868\u7684\u4e3b\u952e 2\u3001\u4e00\u5bf9\u591a \u591a\u7684\u4e00\u65b9\u8bbe\u7f6e\u5916\u952e\u6307\u5411\u4e00\u7684\u4e00\u65b9\u4e3b\u952e 3\u3001\u591a\u5bf9\u591a \u501f\u52a9\u7b2c\u4e09\u5f20\u8868\u6765\u5b9e\u73b0\u5173\u8054\uff0c\u7b2c\u4e09\u5f20\u8868\u5206\u522b\u8bbe\u7f6e2\u4e2a\u5b57\u6bb5\u8bbe\u7f6e\u5916\u952e\u5206\u522b\u6307\u5411\u4e24\u5f20\u8868\u7684\u4e3b\u952e\uff0c\u5e76\u4e14\u8bbe\u7f6e\u4e3a\u8054\u5408\u4e3b\u952e *\/ \/* \u65c5\u6e38\u5206\u7c7b:categary \u65c5\u6e38\u7ebf\u8def:line \u7528\u6237:user \u65c5\u6e38\u5206\u7c7b(\u4e00) &#8212; \u65c5\u6e38\u7ebf\u8def(\u591a) \u7528\u6237(\u591a) &#8212; \u65c5\u6e38\u7ebf\u8def(\u591a) *\/ &#8212; \u7528\u6237\u8868\uff1aid, username, gender, age\uff0c\u4e3b\u952eid\uff0c\u81ea\u589e\u957f CREATE TABLE tab_user ( id INT PRIMARY KEY auto_increment, username VARCHAR ( 32 ), gender VARCHAR ( 1 ), age INT ) CHARACTER SET utf8mb4; &#8212; \u5206\u7c7b\u8868\uff1aid, cat_name\uff0c\u4e3b\u952eid\u81ea\u589e\u957f CREATE [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[282],"tags":[22,289,288],"class_list":["post-1615","post","type-post","status-publish","format-standard","hentry","category-database","tag-mysql","tag-289","tag-288"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1615","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/comments?post=1615"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1615\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=1615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=1615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=1615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}