{"id":183508,"date":"2024-11-10T05:24:20","date_gmt":"2024-11-09T21:24:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183508\/"},"modified":"2024-11-10T05:24:21","modified_gmt":"2024-11-09T21:24:21","slug":"%e5%af%a6%e6%88%b0%e9%a0%85%e7%9b%ae%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%8b%e7%99%bc%e6%8a%80%e5%b7%a7-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%8b%e7%99%bc%e9%a0%85%e7%9b%ae%e5%af%a6%e6%88%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183508\/","title":{"rendered":"\u5be6\u6230\u9805\u76ee\uff1a\u6578\u64da\u5eab\u958b\u767c\u6280\u5de7 (\u6578\u64da\u5eab\u958b\u767c\u9805\u76ee\u5be6\u6230)"},"content":{"rendered":"<h1 id=\"%e5%af%a6%e6%88%b0%e9%a0%85%e7%9b%ae%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%8b%e7%99%bc%e6%8a%80%e5%b7%a7-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%8b%e7%99%bc%e9%a0%85%e7%9b%ae%e5%af%a6%e6%88%b0-cPogbcXxdn\">\u5be6\u6230\u9805\u76ee\uff1a\u6578\u64da\u5eab\u958b\u767c\u6280\u5de7 (\u6578\u64da\u5eab\u958b\u767c\u9805\u76ee\u5be6\u6230)<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u958b\u767c\u5df2\u6210\u70ba\u4e00\u9805\u81f3\u95dc\u91cd\u8981\u7684\u6280\u80fd\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u4f01\u696d\u9084\u662f\u5927\u578b\u4f01\u696d\uff0c\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u548c\u7ba1\u7406\u90fd\u76f4\u63a5\u5f71\u97ff\u5230\u696d\u52d9\u7684\u904b\u884c\u6548\u7387\u548c\u6578\u64da\u7684\u5b89\u5168\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9b\u5be6\u7528\u7684\u6578\u64da\u5eab\u958b\u767c\u6280\u5de7\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u5728\u5be6\u6230\u9805\u76ee\u4e2d\u66f4\u6709\u6548\u5730\u9032\u884c\u6578\u64da\u5eab\u958b\u767c\u3002<\/p>\n<h2 id=\"1-%e7%90%86%e8%a7%a3%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%8e%9f%e5%89%87-cPogbcXxdn\">1. \u7406\u89e3\u6578\u64da\u5eab\u8a2d\u8a08\u7684\u57fa\u672c\u539f\u5247<\/h2>\n<p>\u5728\u958b\u59cb\u6578\u64da\u5eab\u958b\u767c\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u7406\u89e3\u6578\u64da\u5eab\u8a2d\u8a08\u7684\u57fa\u672c\u539f\u5247\u3002\u9019\u5305\u62ec\u6b63\u898f\u5316\u3001\u6578\u64da\u5b8c\u6574\u6027\u548c\u95dc\u806f\u6027\u7b49\u6982\u5ff5\u3002\u6b63\u898f\u5316\u662f\u6307\u5c07\u6578\u64da\u5206\u89e3\u6210\u591a\u500b\u8868\uff0c\u4ee5\u6e1b\u5c11\u6578\u64da\u5197\u9918\u548c\u63d0\u9ad8\u6578\u64da\u5b8c\u6574\u6027\u3002\u4ee5\u4e0b\u662f\u6b63\u898f\u5316\u7684\u5e7e\u500b\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u7b2c\u4e00\u6b63\u898f\u5f62 (1NF)\uff1a\u78ba\u4fdd\u6bcf\u500b\u8868\u683c\u7684\u6bcf\u4e00\u5217\u90fd\u662f\u539f\u5b50\u6027\u7684\uff0c\u5373\u6bcf\u500b\u6b04\u4f4d\u53ea\u80fd\u5305\u542b\u4e00\u500b\u503c\u3002<\/li>\n<li>\u7b2c\u4e8c\u6b63\u898f\u5f62 (2NF)\uff1a\u78ba\u4fdd\u6bcf\u500b\u975e\u4e3b\u9375\u6b04\u4f4d\u90fd\u5b8c\u5168\u4f9d\u8cf4\u65bc\u4e3b\u9375\u3002<\/li>\n<li>\u7b2c\u4e09\u6b63\u898f\u5f62 (3NF)\uff1a\u78ba\u4fdd\u6bcf\u500b\u975e\u4e3b\u9375\u6b04\u4f4d\u4e0d\u4f9d\u8cf4\u65bc\u5176\u4ed6\u975e\u4e3b\u9375\u6b04\u4f4d\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e9%81%b8%e6%93%87%e5%90%88%e9%81%a9%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e7%ae%a1%e7%90%86%e7%b3%bb%e7%b5%b1-dbms-cPogbcXxdn\">2. \u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71 (DBMS)<\/h2>\n<p>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u5c0d\u65bc\u9805\u76ee\u7684\u6210\u529f\u81f3\u95dc\u91cd\u8981\u3002\u5e38\u898b\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u5305\u62ec MySQL\u3001PostgreSQL\u3001MongoDB \u548c Microsoft SQL Server \u7b49\u3002\u6bcf\u7a2e\u7cfb\u7d71\u90fd\u6709\u5176\u7279\u9ede\u548c\u9069\u7528\u5834\u666f\u3002\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><strong>MySQL\uff1a<\/strong>\u9069\u5408\u4e2d\u5c0f\u578b\u61c9\u7528\uff0c\u64c1\u6709\u826f\u597d\u7684\u6027\u80fd\u548c\u793e\u5340\u652f\u6301\u3002<\/li>\n<li><strong>PostgreSQL\uff1a<\/strong>\u652f\u6301\u8907\u96dc\u67e5\u8a62\u548c\u6578\u64da\u985e\u578b\uff0c\u9069\u5408\u9700\u8981\u9ad8\u53ef\u64f4\u5c55\u6027\u7684\u61c9\u7528\u3002<\/li>\n<li><strong>MongoDB\uff1a<\/strong>\u4f5c\u70ba\u4e00\u7a2e NoSQL \u6578\u64da\u5eab\uff0c\u9069\u5408\u8655\u7406\u975e\u7d50\u69cb\u5316\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e5%af%a6%e6%96%bd%e6%9c%89%e6%95%88%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ae%89%e5%85%a8%e6%8e%aa%e6%96%bd-cPogbcXxdn\">3. \u5be6\u65bd\u6709\u6548\u7684\u6578\u64da\u5eab\u5b89\u5168\u63aa\u65bd<\/h2>\n<p>\u6578\u64da\u5eab\u5b89\u5168\u662f\u958b\u767c\u904e\u7a0b\u4e2d\u4e0d\u53ef\u5ffd\u8996\u7684\u4e00\u74b0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u5b89\u5168\u63aa\u65bd\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u5f37\u5bc6\u78bc\u548c\u5b9a\u671f\u66f4\u63db\u5bc6\u78bc\u3002<\/li>\n<li>\u9650\u5236\u6578\u64da\u5eab\u7528\u6236\u7684\u6b0a\u9650\uff0c\u78ba\u4fdd\u6bcf\u500b\u7528\u6236\u53ea\u80fd\u8a2a\u554f\u5176\u6240\u9700\u7684\u6578\u64da\u3002<\/li>\n<li>\u5b9a\u671f\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6578\u64da\u4e1f\u5931\u6216\u640d\u58de\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd-cPogbcXxdn\">4. \u512a\u5316\u67e5\u8a62\u6027\u80fd<\/h2>\n<p>\u67e5\u8a62\u6027\u80fd\u7684\u512a\u5316\u5c0d\u65bc\u63d0\u9ad8\u61c9\u7528\u7684\u97ff\u61c9\u901f\u5ea6\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316\u67e5\u8a62\u6027\u80fd\u7684\u6280\u5de7\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u7d22\u5f15\uff1a\u70ba\u5e38\u7528\u7684\u67e5\u8a62\u689d\u4ef6\u5efa\u7acb\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li>\u907f\u514d\u4f7f\u7528 SELECT *\uff1a\u660e\u78ba\u6307\u5b9a\u9700\u8981\u7684\u6b04\u4f4d\uff0c\u6e1b\u5c11\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u50b3\u8f38\u3002<\/li>\n<li>\u4f7f\u7528 JOIN \u800c\u975e\u5b50\u67e5\u8a62\uff1a\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528 JOIN \u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2 id=\"5-%e7%9b%a3%e6%8e%a7%e5%92%8c%e7%b6%ad%e8%ad%b7%e6%95%b8%e6%93%9a%e5%ba%ab-cPogbcXxdn\">5. \u76e3\u63a7\u548c\u7dad\u8b77\u6578\u64da\u5eab<\/h2>\n<p>\u6578\u64da\u5eab\u7684\u76e3\u63a7\u548c\u7dad\u8b77\u662f\u78ba\u4fdd\u5176\u7a69\u5b9a\u904b\u884c\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u5de5\u5177\u4f86\u76e3\u63a7\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u5982\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u6027\u80fd\u76e3\u63a7\u5de5\u5177\uff08\u5982 New Relic \u6216 Datadog\uff09\u4f86\u8ddf\u8e2a\u6578\u64da\u5eab\u7684\u6027\u80fd\u6307\u6a19\u3002<\/li>\n<li>\u5b9a\u671f\u6aa2\u67e5\u6578\u64da\u5eab\u7684\u65e5\u8a8c\uff0c\u4ee5\u8b58\u5225\u6f5b\u5728\u7684\u554f\u984c\u3002<\/li>\n<li>\u9032\u884c\u5b9a\u671f\u7684\u6578\u64da\u5eab\u6e05\u7406\uff0c\u522a\u9664\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u4ee5\u91cb\u653e\u7a7a\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-cPogbcXxdn\">\u7e3d\u7d50<\/h2>\n<p>\u6578\u64da\u5eab\u958b\u767c\u662f\u4e00\u9805\u8907\u96dc\u4f46\u5145\u6eff\u6311\u6230\u7684\u4efb\u52d9\uff0c\u638c\u63e1\u4e0a\u8ff0\u6280\u5de7\u5c07\u6709\u52a9\u65bc\u958b\u767c\u8005\u5728\u5be6\u6230\u9805\u76ee\u4e2d\u53d6\u5f97\u6210\u529f\u3002\u7121\u8ad6\u662f\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u9084\u662f\u5be6\u65bd\u6709\u6548\u7684\u5b89\u5168\u63aa\u65bd\uff0c\u9019\u4e9b\u90fd\u662f\u78ba\u4fdd\u6578\u64da\u5eab\u9ad8\u6548\u904b\u884c\u7684\u95dc\u9375\u56e0\u7d20\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u958b\u767c\u9805\u76ee\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1\u6578\u64da\u5eab\u958b\u767c\u6280\u5de7\uff0c\u900f\u904e\u5be6\u6230\u9805\u76ee\u63d0\u5347\u6280\u80fd\uff0c\u5b78\u7fd2\u6700\u4f73\u5be6\u8e10\uff0c\u61c9\u5c0d\u771f\u5be6\u958b\u767c\u6311\u6230\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-183508","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183508","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=183508"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183508\/revisions"}],"predecessor-version":[{"id":183509,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183508\/revisions\/183509"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183508"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183508"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183508"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}