{"id":186278,"date":"2024-11-11T04:35:19","date_gmt":"2024-11-10T20:35:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186278\/"},"modified":"2024-11-11T04:35:20","modified_gmt":"2024-11-10T20:35:20","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b8%b8%e7%94%a8%e9%97%9c%e9%8d%b5%e5%ad%97%e5%bd%99%e7%b8%bd%ef%bc%8c%e8%ae%93%e4%bd%a0%e5%bf%ab%e9%80%9f%e5%85%a5%e9%96%80%ef%bc%81%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186278\/","title":{"rendered":"\u6578\u64da\u5eab\u5e38\u7528\u95dc\u9375\u5b57\u5f59\u7e3d\uff0c\u8b93\u4f60\u5feb\u901f\u5165\u9580\uff01\uff08\u6578\u64da\u5eab\u95dc\u9375\u5b57\u6709\u54ea\u4e9b\uff09"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b8%b8%e7%94%a8%e9%97%9c%e9%8d%b5%e5%ad%97%e5%bd%99%e7%b8%bd%ef%bc%8c%e8%ae%93%e4%bd%a0%e5%bf%ab%e9%80%9f%e5%85%a5%e9%96%80%ef%bc%81%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab-AJPyCIXAZP\">\u6578\u64da\u5eab\u5e38\u7528\u95dc\u9375\u5b57\u5f59\u7e3d\uff0c\u8b93\u4f60\u5feb\u901f\u5165\u9580\uff01\uff08\u6578\u64da\u5eab\u95dc\u9375\u5b57\u6709\u54ea\u4e9b\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u666e\u904d\u3002\u7121\u8ad6\u662f\u4f01\u696d\u9084\u662f\u500b\u4eba\uff0c\u6578\u64da\u5eab\u90fd\u626e\u6f14\u8457\u91cd\u8981\u7684\u89d2\u8272\u3002\u5c0d\u65bc\u521d\u5b78\u8005\u4f86\u8aaa\uff0c\u4e86\u89e3\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5\u548c\u5e38\u7528\u95dc\u9375\u5b57\u662f\u9032\u5165\u9019\u500b\u9818\u57df\u7684\u7b2c\u4e00\u6b65\u3002\u672c\u6587\u5c07\u70ba\u60a8\u5f59\u7e3d\u4e00\u4e9b\u5e38\u898b\u7684\u6578\u64da\u5eab\u95dc\u9375\u5b57\uff0c\u5e6b\u52a9\u60a8\u5feb\u901f\u5165\u9580\u3002<\/p>\n<h2 id=\"1-%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%88database%ef%bc%89-AJPyCIXAZP\">1. \u6578\u64da\u5eab\uff08Database\uff09<\/h2>\n<p>\u6578\u64da\u5eab\u662f\u7528\u4f86\u5b58\u5132\u3001\u7ba1\u7406\u548c\u6aa2\u7d22\u6578\u64da\u7684\u7cfb\u7d71\u3002\u5b83\u53ef\u4ee5\u662f\u95dc\u806f\u578b\u6578\u64da\u5eab\uff08\u5982 MySQL\u3001PostgreSQL\uff09\u6216\u975e\u95dc\u806f\u578b\u6578\u64da\u5eab\uff08\u5982 MongoDB\u3001Cassandra\uff09\u3002<\/p>\n<h2 id=\"2-%e8%a1%a8%ef%bc%88table%ef%bc%89-AJPyCIXAZP\">2. \u8868\uff08Table\uff09<\/h2>\n<p>\u8868\u662f\u6578\u64da\u5eab\u4e2d\u5b58\u5132\u6578\u64da\u7684\u57fa\u672c\u55ae\u4f4d\u3002\u6bcf\u500b\u8868\u7531\u884c\uff08\u8a18\u9304\uff09\u548c\u5217\uff08\u5b57\u6bb5\uff09\u7d44\u6210\u3002\u4f8b\u5982\uff0c\u9867\u5ba2\u8868\u53ef\u80fd\u5305\u542b\u9867\u5ba2ID\u3001\u59d3\u540d\u548c\u96fb\u5b50\u90f5\u4ef6\u7b49\u5b57\u6bb5\u3002<\/p>\n<h2 id=\"3-%e8%a1%8c%ef%bc%88row%ef%bc%89%e5%92%8c%e5%88%97%ef%bc%88column%ef%bc%89-AJPyCIXAZP\">3. \u884c\uff08Row\uff09\u548c\u5217\uff08Column\uff09<\/h2>\n<ul>\n<li><strong>\u884c\uff08Row\uff09<\/strong>: \u8868\u4e2d\u7684\u4e00\u689d\u8a18\u9304\uff0c\u4ee3\u8868\u4e00\u500b\u5be6\u9ad4\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u5217\uff08Column\uff09<\/strong>: \u8868\u4e2d\u7684\u4e00\u500b\u5b57\u6bb5\uff0c\u4ee3\u8868\u6578\u64da\u7684\u5c6c\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e4%b8%bb%e9%8d%b5%ef%bc%88primary-key%ef%bc%89-AJPyCIXAZP\">4. \u4e3b\u9375\uff08Primary Key\uff09<\/h2>\n<p>\u4e3b\u9375\u662f\u7528\u4f86\u552f\u4e00\u6a19\u8b58\u8868\u4e2d\u6bcf\u4e00\u884c\u7684\u5b57\u6bb5\u3002\u4e3b\u9375\u7684\u503c\u4e0d\u80fd\u91cd\u8907\uff0c\u4e14\u4e0d\u80fd\u70ba\u7a7a\u3002\u4f8b\u5982\uff0c\u5728\u9867\u5ba2\u8868\u4e2d\uff0c\u9867\u5ba2ID\u53ef\u4ee5\u4f5c\u70ba\u4e3b\u9375\u3002<\/p>\n<h2 id=\"5-%e5%a4%96%e9%8d%b5%ef%bc%88foreign-key%ef%bc%89-AJPyCIXAZP\">5. \u5916\u9375\uff08Foreign Key\uff09<\/h2>\n<p>\u5916\u9375\u662f\u7528\u4f86\u5efa\u7acb\u8868\u4e4b\u9593\u95dc\u806f\u7684\u5b57\u6bb5\u3002\u5b83\u6307\u5411\u53e6\u4e00\u500b\u8868\u7684\u4e3b\u9375\uff0c\u5f9e\u800c\u5be6\u73fe\u6578\u64da\u7684\u95dc\u806f\u6027\u3002\u4f8b\u5982\uff0c\u8a02\u55ae\u8868\u4e2d\u7684\u9867\u5ba2ID\u53ef\u4ee5\u4f5c\u70ba\u5916\u9375\uff0c\u6307\u5411\u9867\u5ba2\u8868\u7684\u9867\u5ba2ID\u3002<\/p>\n<h2 id=\"6-%e6%9f%a5%e8%a9%a2%ef%bc%88query%ef%bc%89-AJPyCIXAZP\">6. \u67e5\u8a62\uff08Query\uff09<\/h2>\n<p>\u67e5\u8a62\u662f\u7528\u4f86\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6578\u64da\u7684\u8acb\u6c42\u3002\u6700\u5e38\u7528\u7684\u67e5\u8a62\u8a9e\u8a00\u662f SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b SQL \u67e5\u8a62\u7528\u65bc\u9078\u64c7\u6240\u6709\u9867\u5ba2\u7684\u59d3\u540d\uff1a<\/p>\n<pre><code>SELECT name FROM customers;<\/code><\/pre>\n<h2 id=\"7-%e6%8f%92%e5%85%a5%ef%bc%88insert%ef%bc%89-AJPyCIXAZP\">7. \u63d2\u5165\uff08Insert\uff09<\/h2>\n<p>\u63d2\u5165\u662f\u5c07\u65b0\u6578\u64da\u6dfb\u52a0\u5230\u6578\u64da\u5eab\u8868\u4e2d\u7684\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u63d2\u5165\u4e00\u689d\u65b0\u9867\u5ba2\u8a18\u9304\u7684 SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>INSERT INTO customers (name, email) VALUES ('\u5f35\u4e09', 'zhangsan@example.com');<\/code><\/pre>\n<h2 id=\"8-%e6%9b%b4%e6%96%b0%ef%bc%88update%ef%bc%89-AJPyCIXAZP\">8. \u66f4\u65b0\uff08Update\uff09<\/h2>\n<p>\u66f4\u65b0\u662f\u7528\u4f86\u4fee\u6539\u5df2\u5b58\u5728\u6578\u64da\u7684\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u66f4\u65b0\u9867\u5ba2\u96fb\u5b50\u90f5\u4ef6\u7684 SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE customers SET email = 'newemail@example.com' WHERE name = '\u5f35\u4e09';<\/code><\/pre>\n<h2 id=\"9-%e5%88%aa%e9%99%a4%ef%bc%88delete%ef%bc%89-AJPyCIXAZP\">9. \u522a\u9664\uff08Delete\uff09<\/h2>\n<p>\u522a\u9664\u662f\u7528\u4f86\u5f9e\u6578\u64da\u5eab\u4e2d\u79fb\u9664\u6578\u64da\u7684\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u522a\u9664\u9867\u5ba2\u8a18\u9304\u7684 SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>DELETE FROM customers WHERE name = '\u5f35\u4e09';<\/code><\/pre>\n<h2 id=\"10-%e7%b4%a2%e5%bc%95%ef%bc%88index%ef%bc%89-AJPyCIXAZP\">10. \u7d22\u5f15\uff08Index\uff09<\/h2>\n<p>\u7d22\u5f15\u662f\u7528\u4f86\u52a0\u901f\u6578\u64da\u6aa2\u7d22\u7684\u6578\u64da\u7d50\u69cb\u3002\u901a\u904e\u5728\u8868\u7684\u67d0\u4e9b\u5217\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<h2 id=\"11-%e4%ba%8b%e5%8b%99%ef%bc%88transaction%ef%bc%89-AJPyCIXAZP\">11. \u4e8b\u52d9\uff08Transaction\uff09<\/h2>\n<p>\u4e8b\u52d9\u662f\u4e00\u7d44\u64cd\u4f5c\u7684\u96c6\u5408\uff0c\u9019\u4e9b\u64cd\u4f5c\u8981\u9ebc\u5168\u90e8\u6210\u529f\uff0c\u8981\u9ebc\u5168\u90e8\u5931\u6557\u3002\u4e8b\u52d9\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<h2 id=\"12-%e6%ad%a3%e8%a6%8f%e5%8c%96%ef%bc%88normalization%ef%bc%89-AJPyCIXAZP\">12. \u6b63\u898f\u5316\uff08Normalization\uff09<\/h2>\n<p>\u6b63\u898f\u5316\u662f\u8a2d\u8a08\u6578\u64da\u5eab\u7684\u4e00\u7a2e\u65b9\u6cd5\uff0c\u65e8\u5728\u6e1b\u5c11\u6578\u64da\u5197\u9918\u548c\u63d0\u9ad8\u6578\u64da\u5b8c\u6574\u6027\u3002\u901a\u904e\u5c07\u6578\u64da\u5206\u6563\u5230\u591a\u500b\u8868\u4e2d\uff0c\u53ef\u4ee5\u9054\u5230\u6b63\u898f\u5316\u7684\u76ee\u7684\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-AJPyCIXAZP\">\u7e3d\u7d50<\/h2>\n<p>\u638c\u63e1\u4ee5\u4e0a\u6578\u64da\u5eab\u5e38\u7528\u95dc\u9375\u5b57\uff0c\u5c07\u6709\u52a9\u65bc\u60a8\u66f4\u597d\u5730\u7406\u89e3\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5\u548c\u64cd\u4f5c\u3002\u96a8\u8457\u6280\u8853\u7684\u767c\u5c55\uff0c\u6578\u64da\u5eab\u7684\u61c9\u7528\u8d8a\u4f86\u8d8a\u5ee3\u6cdb\uff0c\u5b78\u7fd2\u9019\u4e9b\u95dc\u9375\u5b57\u5c07\u70ba\u60a8\u7684\u8077\u696d\u751f\u6daf\u6253\u4e0b\u5805\u5be6\u7684\u57fa\u790e\u3002\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u90e8\u7f72\u548c\u7ba1\u7406\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u9805\u76ee\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u61c9\u7528\u9084\u662f\u5927\u578b\u7cfb\u7d71\uff0c\u9078\u64c7\u5408\u9069\u7684<a href=\"https:\/\/server.hk\">\u670d\u52a1\u5668<\/a>\u5c07\u662f\u6210\u529f\u7684\u95dc\u9375\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6578\u64da\u5eab\u5e38\u7528\u95dc\u9375\u5b57\u5f59\u7e3d\uff0c\u5e6b\u52a9\u4f60\u5feb\u901f\u5165\u9580\uff0c\u4e86\u89e3\u6578\u64da\u5eab\u64cd\u4f5c\u8207\u7ba1\u7406\u7684\u57fa\u672c\u8853\u8a9e\u8207\u6982\u5ff5\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-186278","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186278","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=186278"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186278\/revisions"}],"predecessor-version":[{"id":186279,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186278\/revisions\/186279"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186278"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186278"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}