{"id":153679,"date":"2024-11-02T09:27:18","date_gmt":"2024-11-02T01:27:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/153679\/"},"modified":"2024-11-02T09:27:19","modified_gmt":"2024-11-02T01:27:19","slug":"%e5%a4%a7%e5%ad%b8%e7%94%9f%e5%ad%b8%e7%bf%92%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%8c%e9%9c%80%e8%a6%81%e9%97%9c%e6%b3%a8%e5%93%aa%e4%ba%9b%e4%b8%8d%e5%90%8c%e9%bb%9e%ef%bc%9f-%e5%a4%a7%e5%ad%b8%e7%94%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/153679\/","title":{"rendered":"\u5927\u5b78\u751f\u5b78\u7fd2\u6578\u64da\u5eab\uff0c\u9700\u8981\u95dc\u6ce8\u54ea\u4e9b\u4e0d\u540c\u9ede\uff1f (\u5927\u5b78\u751f\u6578\u64da\u5eab\u5b78\u4ec0\u9ebc\u4e0d\u540c)"},"content":{"rendered":"

\u5927\u5b78\u751f\u5b78\u7fd2\u6578\u64da\u5eab\uff0c\u9700\u8981\u95dc\u6ce8\u54ea\u4e9b\u4e0d\u540c\u9ede\uff1f<\/h1>\n

\u96a8\u8457\u79d1\u6280\u7684\u8fc5\u901f\u767c\u5c55\uff0c\u6578\u64da\u5eab\u6280\u8853\u5df2\u6210\u70ba\u73fe\u4ee3\u8a08\u7b97\u6a5f\u79d1\u5b78\u548c\u4fe1\u606f\u6280\u8853\u6559\u80b2\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u5c0d\u65bc\u5927\u5b78\u751f\u4f86\u8aaa\uff0c\u5b78\u7fd2\u6578\u64da\u5eab\u4e0d\u50c5\u50c5\u662f\u638c\u63e1\u57fa\u672c\u7684\u6578\u64da\u5b58\u5132\u548c\u6aa2\u7d22\u6280\u8853\uff0c\u66f4\u9700\u8981\u95dc\u6ce8\u591a\u500b\u4e0d\u540c\u7684\u65b9\u9762\uff0c\u4ee5\u4fbf\u5728\u672a\u4f86\u7684\u8077\u696d\u751f\u6daf\u4e2d\u80fd\u5920\u9748\u6d3b\u61c9\u7528\u9019\u4e9b\u77e5\u8b58\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5927\u5b78\u751f\u5728\u5b78\u7fd2\u6578\u64da\u5eab\u6642\u9700\u8981\u95dc\u6ce8\u7684\u5e7e\u500b\u95dc\u9375\u9ede\u3002<\/p>\n

1. \u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u9996\u5148\uff0c\u5927\u5b78\u751f\u9700\u8981\u7406\u89e3\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5\uff0c\u5305\u62ec\u6578\u64da\u5eab\u7684\u5b9a\u7fa9\u3001\u7d50\u69cb\u548c\u529f\u80fd\u3002\u6578\u64da\u5eab\u662f\u4e00\u7a2e\u6709\u7d44\u7e54\u7684\u6578\u64da\u96c6\u5408\uff0c\u901a\u5e38\u7531\u6578\u64da\u8868\u7d44\u6210\u3002\u6bcf\u500b\u6578\u64da\u8868\u7531\u884c\u548c\u5217\u7d44\u6210\uff0c\u884c\u4ee3\u8868\u8a18\u9304\uff0c\u5217\u4ee3\u8868\u5c6c\u6027\u3002\u5b78\u751f\u61c9\u8a72\u719f\u6089\u95dc\u9375\u8853\u8a9e\uff0c\u5982\u4e3b\u9375\u3001\u5916\u9375\u3001\u7d22\u5f15\u7b49\uff0c\u9019\u4e9b\u90fd\u662f\u8a2d\u8a08\u548c\u7ba1\u7406\u6578\u64da\u5eab\u6642\u5fc5\u9808\u638c\u63e1\u7684\u57fa\u672c\u6982\u5ff5\u3002<\/p>\n

2. \u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u7684\u9078\u64c7<\/h2>\n

\u5728\u5b78\u7fd2\u6578\u64da\u5eab\u6642\uff0c\u5b78\u751f\u9700\u8981\u4e86\u89e3\u4e0d\u540c\u985e\u578b\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\uff0c\u5982\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982 MySQL\u3001PostgreSQL\uff09\u548c\u975e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982 MongoDB\u3001Cassandra\uff09\u3002\u6bcf\u7a2e\u7cfb\u7d71\u90fd\u6709\u5176\u7279\u5b9a\u7684\u61c9\u7528\u5834\u666f\u548c\u512a\u7f3a\u9ede\u3002\u5b78\u751f\u61c9\u8a72\u6839\u64da\u5be6\u969b\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684 DBMS\uff0c\u4e26\u5b78\u7fd2\u5982\u4f55\u5b89\u88dd\u3001\u914d\u7f6e\u548c\u4f7f\u7528\u9019\u4e9b\u7cfb\u7d71\u3002<\/p>\n

3. SQL \u8a9e\u8a00\u7684\u638c\u63e1<\/h2>\n

\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff08SQL\uff09\u662f\u8207\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4ea4\u4e92\u7684\u4e3b\u8981\u8a9e\u8a00\u3002\u5927\u5b78\u751f\u9700\u8981\u5b78\u7fd2 SQL \u7684\u57fa\u672c\u8a9e\u6cd5\uff0c\u5305\u62ec\u67e5\u8a62\uff08SELECT\uff09\u3001\u63d2\u5165\uff08INSERT\uff09\u3001\u66f4\u65b0\uff08UPDATE\uff09\u548c\u522a\u9664\uff08DELETE\uff09\u7b49\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684 SQL \u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n

SELECT * FROM students WHERE age > 20;<\/code><\/pre>\n
\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u5e74\u9f61\u5927\u65bc 20 \u6b72\u7684\u5b78\u751f\u8a18\u9304\u3002\u638c\u63e1 SQL \u4e0d\u50c5\u80fd\u5e6b\u52a9\u5b78\u751f\u6709\u6548\u5730\u64cd\u4f5c\u6578\u64da\uff0c\u9084\u80fd\u70ba\u5f8c\u7e8c\u7684\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u6253\u4e0b\u57fa\u790e\u3002<\/p>\n
4. \u6578\u64da\u5eab\u8a2d\u8a08\u539f\u5247<\/h2>\n
\u6578\u64da\u5eab\u8a2d\u8a08\u662f\u6578\u64da\u5eab\u5b78\u7fd2\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u65b9\u9762\u3002\u5b78\u751f\u9700\u8981\u4e86\u89e3\u5982\u4f55\u8a2d\u8a08\u4e00\u500b\u9ad8\u6548\u7684\u6578\u64da\u5eab\uff0c\u5305\u62ec\u6b63\u898f\u5316\uff08Normalization\uff09\u548c\u53cd\u6b63\u898f\u5316\uff08Denormalization\uff09\u7684\u6982\u5ff5\u3002\u6b63\u898f\u5316\u662f\u5c07\u6578\u64da\u5206\u89e3\u70ba\u591a\u500b\u8868\u4ee5\u6d88\u9664\u5197\u9918\uff0c\u800c\u53cd\u6b63\u898f\u5316\u5247\u662f\u70ba\u4e86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u800c\u5c07\u6578\u64da\u5408\u4f75\u5230\u4e00\u500b\u8868\u4e2d\u3002\u5b78\u751f\u61c9\u8a72\u5b78\u6703\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u8a2d\u8a08\u65b9\u6cd5\u3002<\/p>\n
5. \u6578\u64da\u5b89\u5168\u8207\u5099\u4efd<\/h2>\n
\u96a8\u8457\u6578\u64da\u7684\u91cd\u8981\u6027\u65e5\u76ca\u589e\u52a0\uff0c\u6578\u64da\u5b89\u5168\u548c\u5099\u4efd\u6210\u70ba\u4e86\u5b78\u7fd2\u6578\u64da\u5eab\u6642\u4e0d\u53ef\u5ffd\u8996\u7684\u90e8\u5206\u3002\u5b78\u751f\u9700\u8981\u4e86\u89e3\u5982\u4f55\u4fdd\u8b77\u6578\u64da\u5eab\u514d\u53d7\u672a\u7d93\u6388\u6b0a\u7684\u8a2a\u554f\u548c\u6578\u64da\u4e1f\u5931\u7684\u98a8\u96aa\u3002\u9019\u5305\u62ec\u4f7f\u7528\u9069\u7576\u7684\u8eab\u4efd\u9a57\u8b49\u6a5f\u5236\u3001\u52a0\u5bc6\u6280\u8853\u4ee5\u53ca\u5b9a\u671f\u5099\u4efd\u6578\u64da\u7684\u7b56\u7565\u3002<\/p>\n
6. \u5be6\u8e10\u8207\u9805\u76ee\u7d93\u9a57<\/h2>\n
\u6700\u5f8c\uff0c\u7406\u8ad6\u77e5\u8b58\u7684\u5b78\u7fd2\u5fc5\u9808\u8207\u5be6\u8e10\u76f8\u7d50\u5408\u3002\u5927\u5b78\u751f\u61c9\u8a72\u53c3\u8207\u5be6\u969b\u7684\u9805\u76ee\uff0c\u7121\u8ad6\u662f\u5b78\u6821\u7684\u8ab2\u7a0b\u9805\u76ee\u9084\u662f\u500b\u4eba\u7684\u958b\u6e90\u9805\u76ee\u3002\u9019\u4e0d\u50c5\u80fd\u5e6b\u52a9\u4ed6\u5011\u978f\u56fa\u6240\u5b78\u77e5\u8b58\uff0c\u9084\u80fd\u63d0\u9ad8\u4ed6\u5011\u7684\u5be6\u969b\u64cd\u4f5c\u80fd\u529b\uff0c\u70ba\u672a\u4f86\u7684\u8077\u696d\u751f\u6daf\u6253\u4e0b\u5805\u5be6\u7684\u57fa\u790e\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u7e3d\u4e4b\uff0c\u5927\u5b78\u751f\u5728\u5b78\u7fd2\u6578\u64da\u5eab\u6642\u9700\u8981\u95dc\u6ce8\u591a\u500b\u4e0d\u540c\u7684\u65b9\u9762\uff0c\u5305\u62ec\u57fa\u672c\u6982\u5ff5\u3001DBMS \u7684\u9078\u64c7\u3001SQL \u8a9e\u8a00\u7684\u638c\u63e1\u3001\u6578\u64da\u5eab\u8a2d\u8a08\u539f\u5247\u3001\u6578\u64da\u5b89\u5168\u8207\u5099\u4efd\u4ee5\u53ca\u5be6\u8e10\u7d93\u9a57\u3002\u9019\u4e9b\u77e5\u8b58\u548c\u6280\u80fd\u5c07\u6709\u52a9\u65bc\u4ed6\u5011\u5728\u672a\u4f86\u7684\u8077\u696d\u751f\u6daf\u4e2d\u66f4\u597d\u5730\u61c9\u5c0d\u5404\u7a2e\u6311\u6230\u3002\u82e5\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u61c9\u7528\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528 \u9999\u6e2fVPS<\/a> \u4f86\u642d\u5efa\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u5b78\u7fd2\u548c\u5be6\u8e10\u63d0\u4f9b\u5f37\u6709\u529b\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u5927\u5b78\u751f\u5b78\u7fd2\u6578\u64da\u5eab\u6642\u9700\u95dc\u6ce8\u7684\u4e0d\u540c\u9ede\uff0c\u5305\u62ec\u8cc7\u6599\u7d50\u69cb\u3001\u67e5\u8a62\u8a9e\u8a00\u3001\u6578\u64da\u7ba1\u7406\u53ca\u5be6\u969b\u61c9\u7528\u6848\u4f8b\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-153679","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153679","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=153679"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153679\/revisions"}],"predecessor-version":[{"id":153680,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153679\/revisions\/153680"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=153679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=153679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=153679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}