{"id":186168,"date":"2024-11-11T03:40:18","date_gmt":"2024-11-10T19:40:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186168\/"},"modified":"2024-11-11T03:40:20","modified_gmt":"2024-11-10T19:40:20","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e8%a8%ad%e8%a8%88%e6%8c%87%e5%8d%97%ef%bc%9a%e9%97%9c%e9%8d%b5%e6%ad%a5%e9%a9%9f%e5%8f%8a%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186168\/","title":{"rendered":"\u6578\u64da\u5eab\u8868\u8a2d\u8a08\u6307\u5357\uff1a\u95dc\u9375\u6b65\u9a5f\u53ca\u6ce8\u610f\u4e8b\u9805\uff08\u6578\u64da\u5eab\u7684\u8868\u600e\u9ebc\u8a2d\u8a08\uff09"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e8%a8%ad%e8%a8%88%e6%8c%87%e5%8d%97%ef%bc%9a%e9%97%9c%e9%8d%b5%e6%ad%a5%e9%a9%9f%e5%8f%8a%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-bTzIdZacOh\">\u6578\u64da\u5eab\u8868\u8a2d\u8a08\u6307\u5357\uff1a\u95dc\u9375\u6b65\u9a5f\u53ca\u6ce8\u610f\u4e8b\u9805<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u81f3\u95dc\u91cd\u8981\u3002\u826f\u597d\u7684\u6578\u64da\u5eab\u8868\u8a2d\u8a08\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u7684\u5b58\u53d6\u6548\u7387\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6578\u64da\u5eab\u8868\u8a2d\u8a08\u7684\u95dc\u9375\u6b65\u9a5f\u53ca\u6ce8\u610f\u4e8b\u9805\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u5efa\u7acb\u9ad8\u6548\u7684\u6578\u64da\u5eab\u7d50\u69cb\u3002<\/p>\n<h2 id=\"1-%e7%a2%ba%e5%ae%9a%e9%9c%80%e6%b1%82-bTzIdZacOh\">1. \u78ba\u5b9a\u9700\u6c42<\/h2>\n<p>\u5728\u958b\u59cb\u8a2d\u8a08\u6578\u64da\u5eab\u8868\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u660e\u78ba\u7cfb\u7d71\u7684\u9700\u6c42\u3002\u9019\u5305\u62ec\u4e86\u89e3\u696d\u52d9\u6d41\u7a0b\u3001\u7528\u6236\u9700\u6c42\u4ee5\u53ca\u6578\u64da\u7684\u6027\u8cea\u3002\u8207\u5229\u76ca\u76f8\u95dc\u8005\u9032\u884c\u6df1\u5165\u7684\u8a0e\u8ad6\uff0c\u78ba\u4fdd\u6240\u6709\u9700\u6c42\u90fd\u88ab\u8003\u616e\u5230\u3002<\/p>\n<h2 id=\"2-%e5%ae%9a%e7%be%a9%e5%af%a6%e9%ab%94%e5%8f%8a%e5%85%b6%e5%b1%ac%e6%80%a7-bTzIdZacOh\">2. \u5b9a\u7fa9\u5be6\u9ad4\u53ca\u5176\u5c6c\u6027<\/h2>\n<p>\u5728\u78ba\u5b9a\u9700\u6c42\u5f8c\uff0c\u4e0b\u4e00\u6b65\u662f\u8b58\u5225\u7cfb\u7d71\u4e2d\u7684\u5be6\u9ad4\uff08Entities\uff09\u53ca\u5176\u5c6c\u6027\uff08Attributes\uff09\u3002\u5be6\u9ad4\u53ef\u4ee5\u662f\u4efb\u4f55\u9700\u8981\u5b58\u5132\u7684\u5c0d\u8c61\uff0c\u4f8b\u5982\u7528\u6236\u3001\u7522\u54c1\u6216\u8a02\u55ae\u3002\u6bcf\u500b\u5be6\u9ad4\u61c9\u8a72\u6709\u4e00\u7d44\u5c6c\u6027\u4f86\u63cf\u8ff0\u5176\u7279\u5fb5\u3002<\/p>\n<ul>\n<li><strong>\u5be6\u9ad4\u793a\u4f8b\uff1a<\/strong>\u7528\u6236\uff08User\uff09\u3001\u7522\u54c1\uff08Product\uff09\u3001\u8a02\u55ae\uff08Order\uff09<\/li>\n<li><strong>\u5c6c\u6027\u793a\u4f8b\uff1a<\/strong>\u7528\u6236\u7684\u59d3\u540d\u3001\u96fb\u5b50\u90f5\u4ef6\u3001\u7522\u54c1\u7684\u50f9\u683c\u3001\u8a02\u55ae\u7684\u65e5\u671f<\/li>\n<\/ul>\n<h2 id=\"3-%e7%a2%ba%e5%ae%9a%e4%b8%bb%e9%8d%b5-bTzIdZacOh\">3. \u78ba\u5b9a\u4e3b\u9375<\/h2>\n<p>\u6bcf\u500b\u8868\u90fd\u9700\u8981\u4e00\u500b\u4e3b\u9375\uff08Primary Key\uff09\u4f86\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u884c\u6578\u64da\u3002\u4e3b\u9375\u53ef\u4ee5\u662f\u55ae\u4e00\u5c6c\u6027\uff0c\u4e5f\u53ef\u4ee5\u662f\u591a\u500b\u5c6c\u6027\u7684\u7d44\u5408\u3002\u9078\u64c7\u4e3b\u9375\u6642\uff0c\u61c9\u8003\u616e\u5176\u552f\u4e00\u6027\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n<pre><code>CREATE TABLE Users (\n    UserID INT PRIMARY KEY,\n    UserName VARCHAR(100),\n    Email VARCHAR(100)\n);<\/code><\/pre>\n<h2 id=\"4-%e8%a8%ad%e8%a8%88%e8%a1%a8%e4%b9%8b%e9%96%93%e7%9a%84%e9%97%9c%e4%bf%82-bTzIdZacOh\">4. \u8a2d\u8a08\u8868\u4e4b\u9593\u7684\u95dc\u4fc2<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u8868\u4e4b\u9593\u7684\u95dc\u4fc2\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5e38\u898b\u7684\u95dc\u4fc2\u6709\u4e00\u5c0d\u4e00\u3001\u4e00\u5c0d\u591a\u548c\u591a\u5c0d\u591a\u3002\u6839\u64da\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u4fc2\uff0c\u8a2d\u8a08\u5916\u9375\uff08Foreign Key\uff09\u4f86\u7dad\u8b77\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/p>\n<ul>\n<li><strong>\u4e00\u5c0d\u591a\uff1a<\/strong>\u4e00\u500b\u7528\u6236\u53ef\u4ee5\u6709\u591a\u500b\u8a02\u55ae\u3002<\/li>\n<li><strong>\u591a\u5c0d\u591a\uff1a<\/strong>\u4e00\u500b\u7522\u54c1\u53ef\u4ee5\u51fa\u73fe\u5728\u591a\u500b\u8a02\u55ae\u4e2d\uff0c\u800c\u4e00\u500b\u8a02\u55ae\u4e5f\u53ef\u4ee5\u5305\u542b\u591a\u500b\u7522\u54c1\u3002<\/li>\n<\/ul>\n<pre><code>CREATE TABLE Orders (\n    OrderID INT PRIMARY KEY,\n    UserID INT,\n    FOREIGN KEY (UserID) REFERENCES Users(UserID)\n);<\/code><\/pre>\n<h2 id=\"5-%e6%ad%a3%e8%a6%8f%e5%8c%96%e6%95%b8%e6%93%9a-bTzIdZacOh\">5. \u6b63\u898f\u5316\u6578\u64da<\/h2>\n<p>\u6b63\u898f\u5316\u662f\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u6b65\u9a5f\uff0c\u65e8\u5728\u6d88\u9664\u6578\u64da\u5197\u9918\u548c\u4e0d\u4e00\u81f4\u6027\u3002\u901a\u904e\u5c07\u6578\u64da\u5206\u89e3\u70ba\u591a\u500b\u8868\uff0c\u4e26\u4f7f\u7528\u5916\u9375\u4f86\u5efa\u7acb\u95dc\u806f\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/p>\n<ul>\n<li><strong>\u7b2c\u4e00\u6b63\u898f\u5f62\uff081NF\uff09\uff1a<\/strong>\u78ba\u4fdd\u6bcf\u500b\u8868\u7684\u6bcf\u4e00\u5217\u90fd\u662f\u539f\u5b50\u6027\u7684\u3002<\/li>\n<li><strong>\u7b2c\u4e8c\u6b63\u898f\u5f62\uff082NF\uff09\uff1a<\/strong>\u6d88\u9664\u90e8\u5206\u4f9d\u8cf4\u3002<\/li>\n<li><strong>\u7b2c\u4e09\u6b63\u898f\u5f62\uff083NF\uff09\uff1a<\/strong>\u6d88\u9664\u50b3\u905e\u4f9d\u8cf4\u3002<\/li>\n<\/ul>\n<h2 id=\"6-%e8%80%83%e6%85%ae%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96-bTzIdZacOh\">6. \u8003\u616e\u6027\u80fd\u512a\u5316<\/h2>\n<p>\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u8868\u6642\uff0c\u6027\u80fd\u512a\u5316\u4e5f\u662f\u4e00\u500b\u91cd\u8981\u8003\u91cf\u3002\u9019\u5305\u62ec\u7d22\u5f15\u7684\u4f7f\u7528\u3001\u67e5\u8a62\u7684\u512a\u5316\u4ee5\u53ca\u6578\u64da\u7684\u5206\u5340\u3002\u9069\u7576\u7684\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u5beb\u5165\u6027\u80fd\uff0c\u56e0\u6b64\u9700\u8981\u5e73\u8861\u3002<\/p>\n<pre><code>CREATE INDEX idx_user_email ON Users(Email);<\/code><\/pre>\n<h2 id=\"7-%e6%b8%ac%e8%a9%a6%e5%92%8c%e8%aa%bf%e6%95%b4-bTzIdZacOh\">7. \u6e2c\u8a66\u548c\u8abf\u6574<\/h2>\n<p>\u6700\u5f8c\uff0c\u8a2d\u8a08\u5b8c\u6210\u5f8c\uff0c\u61c9\u9032\u884c\u6e2c\u8a66\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u6839\u64da\u6e2c\u8a66\u7d50\u679c\u9032\u884c\u5fc5\u8981\u7684\u8abf\u6574\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u80fd\u5920\u6eff\u8db3\u5be6\u969b\u9700\u6c42\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bTzIdZacOh\">\u7e3d\u7d50<\/h2>\n<p>\u6578\u64da\u5eab\u8868\u7684\u8a2d\u8a08\u662f\u4e00\u500b\u7cfb\u7d71\u5316\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u9700\u6c42\u5206\u6790\u3001\u5be6\u9ad4\u8b58\u5225\u3001\u4e3b\u9375\u9078\u64c7\u3001\u95dc\u4fc2\u8a2d\u8a08\u3001\u6b63\u898f\u5316\u3001\u6027\u80fd\u512a\u5316\u53ca\u6e2c\u8a66\u7b49\u591a\u500b\u6b65\u9a5f\u3002\u901a\u904e\u9075\u5faa\u9019\u4e9b\u95dc\u9375\u6b65\u9a5f\u548c\u6ce8\u610f\u4e8b\u9805\uff0c\u53ef\u4ee5\u5efa\u7acb\u4e00\u500b\u9ad8\u6548\u3001\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u9999\u6e2f\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1\u6578\u64da\u5eab\u8868\u8a2d\u8a08\u7684\u95dc\u9375\u6b65\u9a5f\u8207\u6ce8\u610f\u4e8b\u9805\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u78ba\u4fdd\u6578\u64da\u7d50\u69cb\u5408\u7406\u8207\u53ef\u64f4\u5c55\u6027\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-186168","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186168","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=186168"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186168\/revisions"}],"predecessor-version":[{"id":186169,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186168\/revisions\/186169"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186168"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186168"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}