{"id":180052,"date":"2024-11-09T07:00:19","date_gmt":"2024-11-08T23:00:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/180052\/"},"modified":"2024-11-09T07:00:20","modified_gmt":"2024-11-08T23:00:20","slug":"%e5%a6%82%e4%bd%95%e5%88%b6%e5%ae%9a%e6%95%b8%e6%93%9a%e5%ba%abbusiness-rule%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%abbusiness-rule","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/180052\/","title":{"rendered":"\u5982\u4f55\u5236\u5b9a\u6578\u64da\u5eabbusiness rule\uff1f (\u6578\u64da\u5eabbusiness rule)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%88%b6%e5%ae%9a%e6%95%b8%e6%93%9a%e5%ba%abbusiness-rule%ef%bc%9f-JmDmLELtBb\">\u5982\u4f55\u5236\u5b9a\u6578\u64da\u5eabbusiness rule\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u548c\u7ba1\u7406\u4e2d\uff0cbusiness rule\uff08\u696d\u52d9\u898f\u5247\uff09\u662f\u6307\u7528\u65bc\u5b9a\u7fa9\u548c\u7d04\u675f\u6578\u64da\u7684\u898f\u5247\uff0c\u9019\u4e9b\u898f\u5247\u5e6b\u52a9\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u5236\u5b9a\u6709\u6548\u7684\u696d\u52d9\u898f\u5247\u5c0d\u65bc\u4efb\u4f55\u7d44\u7e54\u4f86\u8aaa\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u56e0\u70ba\u5b83\u5011\u76f4\u63a5\u5f71\u97ff\u5230\u6578\u64da\u7684\u8cea\u91cf\u548c\u7cfb\u7d71\u7684\u904b\u884c\u6548\u7387\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5236\u5b9a\u6578\u64da\u5eab\u7684\u696d\u52d9\u898f\u5247\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u5efa\u8b70\u548c\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"1-%e7%9e%ad%e8%a7%a3%e6%a5%ad%e5%8b%99%e9%9c%80%e6%b1%82-JmDmLELtBb\">1. 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id=\"%e7%af%84%e4%be%8b%ef%bc%9a-JmDmLELtBb\">\u7bc4\u4f8b\uff1a<\/h3>\n<ul>\n<li>\u5982\u679c\u4e00\u500b\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\u9700\u8981\u7ba1\u7406\u5ba2\u6236\u8a02\u55ae\uff0c\u5247\u9700\u8981\u4e86\u89e3\u8a02\u55ae\u7684\u8655\u7406\u6d41\u7a0b\u3001\u4ed8\u6b3e\u65b9\u5f0f\u3001\u9000\u8ca8\u653f\u7b56\u7b49\u3002<\/li>\n<li>\u5728\u91ab\u7642\u7cfb\u7d71\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u8003\u616e\u75c5\u4eba\u7684\u96b1\u79c1\u548c\u6578\u64da\u4fdd\u8b77\u898f\u7bc4\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e5%ae%9a%e7%be%a9%e6%95%b8%e6%93%9a%e5%ae%8c%e6%95%b4%e6%80%a7%e7%b4%84%e6%9d%9f-JmDmLELtBb\">2. \u5b9a\u7fa9\u6578\u64da\u5b8c\u6574\u6027\u7d04\u675f<\/h2>\n<p>\u6578\u64da\u5b8c\u6574\u6027\u7d04\u675f\u662f\u696d\u52d9\u898f\u5247\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u9019\u4e9b\u7d04\u675f\u78ba\u4fdd\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u4e00\u81f4\u6027\u3002\u5e38\u898b\u7684\u5b8c\u6574\u6027\u7d04\u675f\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u5be6\u9ad4\u5b8c\u6574\u6027\uff1a<\/strong>\u78ba\u4fdd\u6bcf\u500b\u8868\u4e2d\u7684\u6bcf\u4e00\u884c\u90fd\u6709\u552f\u4e00\u7684\u6a19\u8b58\u7b26\uff08\u4e3b\u9375\uff09\u3002<\/li>\n<li><strong>\u53c3\u7167\u5b8c\u6574\u6027\uff1a<\/strong>\u78ba\u4fdd\u5916\u9375\u7684\u503c\u5fc5\u9808\u5728\u53c3\u7167\u7684\u8868\u4e2d\u5b58\u5728\u3002<\/li>\n<li><strong>\u57df\u5b8c\u6574\u6027\uff1a<\/strong>\u78ba\u4fdd\u6578\u64da\u985e\u578b\u548c\u7bc4\u570d\u7684\u6b63\u78ba\u6027\uff0c\u4f8b\u5982\uff0c\u5e74\u9f61\u5b57\u6bb5\u61c9\u8a72\u662f\u6b63\u6574\u6578\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%af%84%e4%be%8b%ef%bc%9a-JmDmLELtBb\">\u7bc4\u4f8b\uff1a<\/h3>\n<pre><code>CREATE TABLE Customers (\n    CustomerID INT PRIMARY KEY,\n    Name VARCHAR(100) NOT NULL,\n    Email VARCHAR(100) UNIQUE,\n    Age INT CHECK (Age &gt;= 0)\n);<\/code><\/pre>\n<h2 id=\"3-%e5%88%b6%e5%ae%9a%e6%a5%ad%e5%8b%99%e9%82%8f%e8%bc%af%e8%a6%8f%e5%89%87-JmDmLELtBb\">3. \u5236\u5b9a\u696d\u52d9\u908f\u8f2f\u898f\u5247<\/h2>\n<p>\u696d\u52d9\u908f\u8f2f\u898f\u5247\u662f\u6307\u5728\u7279\u5b9a\u60c5\u6cc1\u4e0b\u61c9\u8a72\u5982\u4f55\u8655\u7406\u6578\u64da\u7684\u898f\u5247\u3002\u9019\u4e9b\u898f\u5247\u901a\u5e38\u6d89\u53ca\u5230\u6578\u64da\u7684\u8a08\u7b97\u3001\u8f49\u63db\u6216\u72c0\u614b\u8b8a\u66f4\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u500b\u9280\u884c\u7cfb\u7d71\u4e2d\uff0c\u7576\u5ba2\u6236\u9032\u884c\u5b58\u6b3e\u6642\uff0c\u5fc5\u9808\u6aa2\u67e5\u8cec\u6236\u662f\u5426\u5b58\u5728\uff0c\u4e26\u66f4\u65b0\u8cec\u6236\u9918\u984d\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b%ef%bc%9a-JmDmLELtBb\">\u7bc4\u4f8b\uff1a<\/h3>\n<pre><code>CREATE TRIGGER UpdateBalance\nAFTER INSERT ON Transactions\nFOR EACH ROW\nBEGIN\n    UPDATE Accounts\n    SET Balance = Balance + NEW.Amount\n    WHERE AccountID = NEW.AccountID;\nEND;<\/code><\/pre>\n<h2 id=\"4-%e6%b8%ac%e8%a9%a6%e5%92%8c%e9%a9%97%e8%ad%89%e6%a5%ad%e5%8b%99%e8%a6%8f%e5%89%87-JmDmLELtBb\">4. \u6e2c\u8a66\u548c\u9a57\u8b49\u696d\u52d9\u898f\u5247<\/h2>\n<p>\u5728\u5be6\u65bd\u696d\u52d9\u898f\u5247\u4e4b\u524d\uff0c\u5fc5\u9808\u9032\u884c\u5145\u5206\u7684\u6e2c\u8a66\u548c\u9a57\u8b49\u3002\u9019\u53ef\u4ee5\u901a\u904e\u5275\u5efa\u6e2c\u8a66\u7528\u4f8b\u4f86\u78ba\u4fdd\u6240\u6709\u7684\u696d\u52d9\u898f\u5247\u90fd\u80fd\u6b63\u5e38\u904b\u884c\uff0c\u4e26\u4e14\u4e0d\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u932f\u8aa4\u3002\u6e2c\u8a66\u61c9\u5305\u62ec\u908a\u754c\u689d\u4ef6\u548c\u7570\u5e38\u60c5\u6cc1\uff0c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n<h2 id=\"5-%e6%8c%81%e7%ba%8c%e7%9b%a3%e6%8e%a7%e5%92%8c%e6%9b%b4%e6%96%b0-JmDmLELtBb\">5. \u6301\u7e8c\u76e3\u63a7\u548c\u66f4\u65b0<\/h2>\n<p>\u696d\u52d9\u74b0\u5883\u662f\u52d5\u614b\u7684\uff0c\u56e0\u6b64\u696d\u52d9\u898f\u5247\u4e5f\u9700\u8981\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\u800c\u9032\u884c\u8abf\u6574\u548c\u66f4\u65b0\u3002\u5b9a\u671f\u6aa2\u67e5\u548c\u8a55\u4f30\u696d\u52d9\u898f\u5247\u7684\u6709\u6548\u6027\uff0c\u4e26\u6839\u64da\u696d\u52d9\u9700\u6c42\u7684\u8b8a\u5316\u9032\u884c\u76f8\u61c9\u7684\u4fee\u6539\u3002<\/p>\n<h1 id=\"%e7%b8%bd%e7%b5%90-JmDmLELtBb\">\u7e3d\u7d50<\/h1>\n<p>\u5236\u5b9a\u6578\u64da\u5eab\u7684\u696d\u52d9\u898f\u5247\u662f\u4e00\u500b\u7cfb\u7d71\u5316\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u5230\u696d\u52d9\u9700\u6c42\u7684\u7406\u89e3\u3001\u6578\u64da\u5b8c\u6574\u6027\u7d04\u675f\u7684\u5b9a\u7fa9\u3001\u696d\u52d9\u908f\u8f2f\u898f\u5247\u7684\u5236\u5b9a\u3001\u6e2c\u8a66\u548c\u9a57\u8b49\uff0c\u4ee5\u53ca\u6301\u7e8c\u7684\u76e3\u63a7\u548c\u66f4\u65b0\u3002\u900f\u904e\u9019\u4e9b\u6b65\u9a5f\uff0c\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u8cea\u91cf\u548c\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u5c07\u6709\u52a9\u65bc\u652f\u6301\u696d\u52d9\u7684\u6301\u7e8c\u589e\u9577\u548c\u767c\u5c55\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5236\u5b9a\u6578\u64da\u5eab\u696d\u52d9\u898f\u5247\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u3001\u5b8c\u6574\u6027\u548c\u6709\u6548\u6027\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\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-180052","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180052","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=180052"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180052\/revisions"}],"predecessor-version":[{"id":180053,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180052\/revisions\/180053"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=180052"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=180052"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=180052"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}