{"id":1532,"date":"2026-03-27T21:53:43","date_gmt":"2026-03-27T21:53:43","guid":{"rendered":"https:\/\/www.viz-read.com\/cn\/erd-business-logic-requirements-data\/"},"modified":"2026-03-27T21:53:43","modified_gmt":"2026-03-27T21:53:43","slug":"erd-business-logic-requirements-data","status":"publish","type":"post","link":"https:\/\/www.viz-read.com\/cn\/erd-business-logic-requirements-data\/","title":{"rendered":"ERD\u4e0e\u4e1a\u52a1\u903b\u8f91\uff1a\u5f25\u5408\u9700\u6c42\u4e0e\u6570\u636e\u4e4b\u95f4\u7684\u5dee\u8ddd"},"content":{"rendered":"

\u8bbe\u8ba1\u7a33\u5065\u7684\u6570\u636e\u67b6\u6784\u4e0d\u4ec5\u9700\u8981\u7ed8\u5236\u65b9\u6846\u548c\u7ebf\u6761\u3002\u5b83\u8fd8\u9700\u8981\u6df1\u5165\u7406\u89e3\u4fe1\u606f\u5728\u7ec4\u7ec7\u4e2d\u7684\u6d41\u52a8\u65b9\u5f0f\uff0c\u4ee5\u53ca\u8fd9\u79cd\u6d41\u52a8\u5982\u4f55\u53d7\u5230\u89c4\u5219\u7684\u5236\u7ea6\u3002\u5b9e\u4f53-\u5173\u7cfb\u56fe\uff08ERD\uff09\u5145\u5f53\u7ed3\u6784\u84dd\u56fe\uff0c\u800c\u4e1a\u52a1\u903b\u8f91\u5219\u51b3\u5b9a\u4e86\u7cfb\u7edf\u7684\u8fd0\u884c\u884c\u4e3a\u3002\u5f53\u8fd9\u4e24\u4e2a\u8981\u7d20\u51fa\u73b0\u5206\u6b67\u65f6\uff0c\u7ed3\u679c\u5f80\u5f80\u662f\u7cfb\u7edf\u53d8\u5f97\u8106\u5f31\uff0c\u96be\u4ee5\u9002\u5e94\u73b0\u5b9e\u9700\u6c42\u3002\u672c\u6307\u5357\u63a2\u8ba8\u4e86\u6570\u636e\u5efa\u6a21\u4e0e\u4e1a\u52a1\u89c4\u5219\u4e4b\u95f4\u7684\u5173\u952e\u4ea4\u6c47\u70b9\uff0c\u63d0\u4f9b\u7b56\u7565\u4ee5\u786e\u4fdd\u60a8\u7684\u6570\u636e\u6a21\u5f0f\u80fd\u591f\u6709\u6548\u652f\u6301\u9700\u6c42\u3002<\/p>\n

\u6311\u6218\u5728\u4e8e\u5c06\u62bd\u8c61\u6982\u5ff5\u2014\u2014\u4f8b\u5982\u201c\u7528\u6237\u4e0d\u80fd\u8ba2\u8d2d\u8d85\u8fc7\u5176\u5e93\u5b58\u6570\u91cf\u7684\u5546\u54c1\u201d\u2014\u2014\u8f6c\u5316\u4e3a\u5177\u4f53\u7684\u6570\u636e\u5e93\u7ed3\u6784\u3002\u5982\u679c\u6a21\u578b\u672a\u80fd\u53cd\u6620\u8fd9\u4e9b\u89c4\u5219\uff0c\u6570\u636e\u5b8c\u6574\u6027\u5c31\u4f1a\u53d7\u635f\u3002\u5982\u679c\u89c4\u5219\u8fc7\u4e8e\u50f5\u5316\uff0c\u4e1a\u52a1\u7075\u6d3b\u6027\u5c31\u4f1a\u4e27\u5931\u3002\u6211\u4eec\u5fc5\u987b\u627e\u5230\u4e00\u79cd\u5e73\u8861\uff0c\u4ee5\u4fdd\u6301\u4e00\u81f4\u6027\u53c8\u4e0d\u6291\u5236\u8fd0\u8425\u3002\u8ba9\u6211\u4eec\u6765\u5ba1\u89c6\u6838\u5fc3\u7ec4\u4ef6\u53ca\u5176\u5bf9\u9f50\u65b9\u5f0f\u3002<\/p>\n

\n
\"Kawaii-style<\/figure>\n<\/div>\n

\u7406\u89e3\u6838\u5fc3\u7ec4\u4ef6 \ud83c\udfd7\ufe0f<\/h2>\n

\u4e3a\u4e86\u5f25\u5408\u8fd9\u4e00\u5dee\u8ddd\uff0c\u6211\u4eec\u5fc5\u987b\u9996\u5148\u660e\u786e\u6211\u4eec\u6240\u5904\u7406\u7684\u5185\u5bb9\u3002\u65b9\u7a0b\u7684\u53cc\u65b9\u90fd\u6709\u5404\u81ea\u72ec\u7279\u7684\u7279\u5f81\uff0c\u8fd9\u4e9b\u7279\u5f81\u4f1a\u5f71\u54cd\u5b83\u4eec\u4e4b\u95f4\u7684\u4e92\u52a8\u65b9\u5f0f\u3002<\/p>\n

\u5b9e\u4f53-\u5173\u7cfb\u56fe\uff08ERD\uff09<\/h3>\n

ERD\u4ee3\u8868\u4e86\u6570\u636e\u7684\u9759\u6001\u7ed3\u6784\u3002\u5b83\u5b9a\u4e49\u4e86\u5b9e\u4f53\uff08\u8868\uff09\u3001\u5c5e\u6027\uff08\u5217\uff09\u548c\u5173\u7cfb\uff08\u5916\u952e\uff09\u3002\u5176\u4e3b\u8981\u76ee\u6807\u662f\u89c4\u8303\u5316\u548c\u5b8c\u6574\u6027\u3002\u5b83\u56de\u7b54\u7684\u95ee\u9898\u662f\uff1a\u201c\u6211\u4eec\u9700\u8981\u5b58\u50a8\u54ea\u4e9b\u6570\u636e\uff1f\u201d\u5173\u952e\u8981\u7d20\u5305\u62ec\uff1a<\/p>\n

    \n
  • \u5b9e\u4f53\uff1a<\/strong> \u7cfb\u7edf\u4e2d\u7684\u57fa\u672c\u5bf9\u8c61\uff0c\u4f8b\u5982 \u5ba2\u6237<\/em>, \u8ba2\u5355<\/em>\uff0c\u6216 \u4ea7\u54c1<\/em>.<\/li>\n
  • \u5c5e\u6027\uff1a<\/strong> \u63cf\u8ff0\u5b9e\u4f53\u7684\u5c5e\u6027\uff0c\u4f8b\u5982 \u7535\u5b50\u90ae\u4ef6<\/em>, \u4ef7\u683c<\/em>\uff0c\u6216 \u72b6\u6001<\/em>.<\/li>\n
  • \u5173\u7cfb\uff1a<\/strong> \u5b9e\u4f53\u4e4b\u95f4\u7684\u8fde\u63a5\u65b9\u5f0f\uff0c\u901a\u5e38\u7531\u4e3b\u952e\u548c\u5916\u952e\u5b9a\u4e49\u3002\u8fd9\u4e9b\u5173\u7cfb\u786e\u7acb\u4e86\u57fa\u6570\uff08\u4e00\u5bf9\u4e00\u3001\u4e00\u5bf9\u591a\uff09\u3002<\/li>\n
  • \u7ea6\u675f\uff1a<\/strong> \u5728\u6570\u636e\u5e93\u5c42\u9762\u5f3a\u5236\u6267\u884c\u7684\u89c4\u5219\uff0c\u4f8b\u5982 NOT NULL<\/code>, UNIQUE<\/code>\uff0c\u6216\u68c0\u67e5<\/code>.<\/li>\n<\/ul>\n

    \u867d\u7136\u5f3a\u5927\uff0c\u4f46ERD\u901a\u5e38\u5904\u4e8e\u88ab\u52a8\u72b6\u6001\u3002\u5b83\u5b58\u50a8\u6570\u636e\uff0c\u4f46\u672c\u8eab\u5e76\u4e0d\u5904\u7406\u6570\u636e\u3002\u5b83\u662f\u5bb9\u5668\uff0c\u800c\u975e\u9a71\u52a8\u8005\u3002<\/p>\n

    \u4e1a\u52a1\u903b\u8f91<\/h3>\n

    \u4e1a\u52a1\u903b\u8f91\u4ee3\u8868\u4e86\u63a7\u5236\u6570\u636e\u521b\u5efa\u3001\u4fee\u6539\u548c\u4f7f\u7528\u65b9\u5f0f\u7684\u4e3b\u52a8\u89c4\u5219\u3002\u5b83\u56de\u7b54\u7684\u95ee\u9898\u662f\uff1a\u201c\u6211\u4eec\u5141\u8bb8\u5bf9\u8fd9\u4e9b\u6570\u636e\u505a\u4ec0\u4e48\uff1f\u201d\u8fd9\u79cd\u903b\u8f91\u53ef\u4ee5\u5b58\u5728\u4e8e\u591a\u4e2a\u5c42\u7ea7\uff1a<\/p>\n

      \n
    • \u5e94\u7528\u5c42\uff1a<\/strong>\u540e\u7aef\u6216\u524d\u7aef\u7684\u4ee3\u7801\uff0c\u5728\u6570\u636e\u8fdb\u5165\u6570\u636e\u5e93\u524d\u5bf9\u8f93\u5165\u8fdb\u884c\u9a8c\u8bc1\u3002<\/li>\n
    • \u6570\u636e\u5e93\u5c42\uff1a<\/strong>\u5b58\u50a8\u8fc7\u7a0b\u3001\u89e6\u53d1\u5668\u548c\u7ea6\u675f\uff0c\u53ef\u5728\u5b58\u50a8\u5f15\u64ce\u5185\u90e8\u76f4\u63a5\u5f3a\u5236\u6267\u884c\u89c4\u5219\u3002<\/li>\n
    • \u5de5\u4f5c\u6d41\u5c42\uff1a<\/strong>\u5b8c\u6210\u4efb\u52a1\u6240\u9700\u7684\u4e8b\u4ef6\u5e8f\u5217\uff0c\u4f8b\u5982\u5ba1\u6279\u94fe\u6216\u72b6\u6001\u8f6c\u6362\u3002<\/li>\n<\/ul>\n

      \u5f53\u4e1a\u52a1\u903b\u8f91\u4e0e\u6570\u636e\u7ed3\u6784\u76f8\u8ddd\u8fc7\u8fdc\u65f6\uff0c\u5c31\u4f1a\u51fa\u73b0\u4e0d\u4e00\u81f4\u3002\u4f8b\u5982\uff0c\u5982\u679c\u5e94\u7528\u7a0b\u5e8f\u5141\u8bb8\u8f93\u5165\u8d1f\u6570\u91cf\uff0c\u4f46\u6570\u636e\u5e93\u7ea6\u675f\u963b\u6b62\u4e86\u8fd9\u4e00\u64cd\u4f5c\uff0c\u7528\u6237\u4f53\u9a8c\u5c31\u4f1a\u88ab\u7834\u574f\u3002\u53cd\u4e4b\uff0c\u5982\u679c\u6570\u636e\u5e93\u5141\u8bb8\u8d1f\u6570\u91cf\uff0c\u4f46\u5e94\u7528\u7a0b\u5e8f\u5374\u963b\u6b62\u4e86\u5b83\uff0c\u903b\u8f91\u5c31\u4f1a\u91cd\u590d\uff0c\u5bb9\u6613\u51fa\u9519\u3002<\/p>\n

      \u6469\u64e6\u70b9\uff1a\u4e3a\u4f55\u5b58\u5728\u8fd9\u4e00\u5dee\u8ddd \ud83d\udcc9<\/h2>\n

      \u5f00\u53d1\u8005\u548c\u6570\u636e\u5e93\u67b6\u6784\u5e08\u5f80\u5f80\u4f7f\u7528\u4e0d\u540c\u7684\u8bed\u8a00\u3002\u6280\u672f\u56e2\u961f\u5173\u6ce8\u6027\u80fd\u548c\u5b8c\u6574\u6027\uff0c\u800c\u4e1a\u52a1\u65b9\u5219\u5173\u6ce8\u529f\u80fd\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002\u8fd9\u79cd\u8131\u8282\u5bfc\u81f4\u4e86\u51e0\u4e2a\u5e38\u89c1\u7684\u6469\u64e6\u70b9\u3002<\/p>\n

        \n
      • \u8fc7\u5ea6\u89c4\u8303\u5316\uff1a<\/strong>\u4e25\u683c\u9075\u5b88\u89c4\u8303\u5316\u89c4\u5219\u4f1a\u4f7f\u590d\u6742\u7684\u4e1a\u52a1\u67e5\u8be2\u53d8\u5f97\u56f0\u96be\u3002\u9ad8\u5ea6\u89c4\u8303\u5316\u7684\u6a21\u5f0f\u9700\u8981\u591a\u6b21\u8fde\u63a5\u624d\u80fd\u83b7\u53d6\u7279\u5b9a\u4e1a\u52a1\u89c4\u5219\u6240\u9700\u7684\u6570\u636e\uff0c\u4ece\u800c\u51cf\u6162\u5e94\u7528\u903b\u8f91\u7684\u6267\u884c\u901f\u5ea6\u3002<\/li>\n
      • \u786c\u7f16\u7801\u89c4\u5219\uff1a<\/strong>\u5c06\u4e1a\u52a1\u89c4\u5219\u76f4\u63a5\u5d4c\u5165\u5e94\u7528\u7a0b\u5e8f\u4ee3\u7801\u4e2d\uff0c\u4f1a\u4f7f\u8fd9\u4e9b\u89c4\u5219\u5bf9\u6570\u636e\u5c42\u4e0d\u53ef\u89c1\u3002\u5982\u679c\u6570\u636e\u5e93\u6a21\u5f0f\u53d1\u751f\u53d8\u5316\uff0c\u5e94\u7528\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u9759\u9ed8\u5931\u8d25\u6216\u8fd4\u56de\u4e0d\u4e00\u81f4\u7684\u6570\u636e\u3002<\/li>\n
      • \u72b6\u6001\u7ba1\u7406\uff1a<\/strong>ERD\u901a\u5e38\u96be\u4ee5\u5904\u7406\u590d\u6742\u7684\u72b6\u6001\u673a\uff08\u4f8b\u5982\u8ba2\u5355\u72b6\u6001\u5982\u201c\u5f85\u5904\u7406\u201d\u3001\u201c\u5df2\u53d1\u8d27\u201d\u3001\u201c\u5df2\u9000\u6b3e\u201d\uff09\u3002\u5982\u679c\u5c06\u8fd9\u4e9b\u72b6\u6001\u8868\u793a\u4e3a\u7b80\u5355\u7684\u5217\uff0c\u800c\u672a\u5f3a\u5236\u6267\u884c\u903b\u8f91\uff0c\u53ef\u80fd\u5bfc\u81f4\u5b64\u7acb\u72b6\u6001\u7684\u51fa\u73b0\u3002<\/li>\n
      • \u9a8c\u8bc1\u65f6\u673a\uff1a<\/strong>\u51b3\u5b9a\u9a8c\u8bc1\u662f\u5728\u5b58\u50a8\u524d\u8fd8\u662f\u5b58\u50a8\u540e\u8fdb\u884c\u81f3\u5173\u91cd\u8981\u3002\u65e9\u671f\u9a8c\u8bc1\u53ef\u51cf\u8f7b\u8d1f\u8f7d\uff0c\u4f46\u540e\u671f\u9a8c\u8bc1\u80fd\u786e\u4fdd\u4f7f\u7528\u6700\u65b0\u6570\u636e\u3002<\/li>\n<\/ul>\n

        \u5f53\u8fd9\u4e9b\u8981\u70b9\u88ab\u5ffd\u89c6\u65f6\uff0c\u7cfb\u7edf\u5c31\u4f1a\u53d8\u6210\u5404\u79cd\u4e34\u65f6\u89e3\u51b3\u65b9\u6848\u7684\u62fc\u51d1\u3002\u5f00\u53d1\u8005\u6dfb\u52a0\u4e34\u65f6\u4fee\u590d\u4ee5\u7ed5\u8fc7\u7ea6\u675f\uff0c\u5bfc\u81f4\u6280\u672f\u503a\u52a1\u7d2f\u79ef\u3002\u6570\u636e\u53d8\u5f97\u4e0d\u53ef\u9760\uff0c\u4e1a\u52a1\u903b\u8f91\u4e5f\u53d8\u5f97\u8106\u5f31\u3002<\/p>\n

        \u5bf9\u9f50\u7b56\u7565 \ud83e\udd1d<\/h2>\n

        \u5f25\u5408\u8fd9\u4e00\u5dee\u8ddd\u9700\u8981\u6709\u610f\u8bc6\u7684\u8bbe\u8ba1\u3002\u6211\u4eec\u5fc5\u987b\u5c06\u6a21\u5f0f\u89c6\u4e3a\u4e00\u4e2a\u968f\u4e1a\u52a1\u9700\u6c42\u4e0d\u65ad\u6f14\u8fdb\u7684\u6d3b\u6587\u6863\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u7ecf\u8fc7\u9a8c\u8bc1\u7684\u7b56\u7565\uff0c\u7528\u4e8e\u4f7f\u6570\u636e\u5efa\u6a21\u4e0e\u903b\u8f91\u4fdd\u6301\u4e00\u81f4\u3002<\/p>\n

        1. \u5c06\u7ea6\u675f\u5efa\u6a21\u4e3a\u4e1a\u52a1\u89c4\u5219<\/h3>\n

        \u6bcf\u4e00\u6761\u9632\u6b62\u65e0\u6548\u6570\u636e\u7684\u4e1a\u52a1\u89c4\u5219\u90fd\u5e94\u6709\u76f8\u5e94\u7684\u6570\u636e\u5e93\u7ea6\u675f\u3002\u4e0d\u8981\u4ec5\u4f9d\u8d56\u5e94\u7528\u7a0b\u5e8f\u4ee3\u7801\u3002\u8fd9\u80fd\u786e\u4fdd\u65e0\u8bba\u6570\u636e\u6765\u81ea\u4f55\u5904\u2014\u2014API\u3001\u811a\u672c\u6216\u76f4\u63a5\u5bfc\u5165\u2014\u2014\u89c4\u5219\u90fd\u80fd\u751f\u6548\u3002<\/p>\n

          \n
        • \u552f\u4e00\u6027\uff1a<\/strong>\u5982\u679c\u7528\u6237\u540d\u5fc5\u987b\u552f\u4e00\uff0c\u5219\u5e94\u5728\u5217\u7ea7\u522b\u5f3a\u5236\u6267\u884c\u3002\u4e0d\u8981\u5148\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u68c0\u67e5\uff0c\u56e0\u4e3a\u53ef\u80fd\u53d1\u751f\u7ade\u4e89\u6761\u4ef6\u3002<\/li>\n
        • \u8303\u56f4\u68c0\u67e5\uff1a<\/strong> \u5982\u679c\u6298\u6263\u4e0d\u80fd\u8d85\u8fc7100%\uff0c\u8bf7\u4f7f\u7528\u4e00\u4e2a CHECK<\/code> \u7ea6\u675f\u3002\u8fd9\u53ef\u4ee5\u9632\u6b62\u6279\u91cf\u66f4\u65b0\u5bfc\u81f4\u7684\u610f\u5916\u6570\u636e\u635f\u574f\u3002<\/li>\n
        • \u5f15\u7528\u5b8c\u6574\u6027\uff1a<\/strong> \u4f7f\u7528\u5916\u952e\u786e\u4fdd\u8ba2\u5355\u59cb\u7ec8\u5c5e\u4e8e\u4e00\u4e2a\u6709\u6548\u7684\u5ba2\u6237\u3002\u5982\u679c\u5ba2\u6237\u88ab\u5220\u9664\uff0c\u6839\u636e\u4e1a\u52a1\u9700\u6c42\u51b3\u5b9a\u8ba2\u5355\u662f\u4fdd\u7559\uff08\u8f6f\u5220\u9664\uff09\u8fd8\u662f\u88ab\u79fb\u9664\uff08\u7ea7\u8054\u5220\u9664\uff09\u3002<\/li>\n<\/ul>\n

          2. \u4e3a\u903b\u8f91\u6027\u80fd\u8fdb\u884c\u53cd\u89c4\u8303\u5316<\/h3>\n

          \u867d\u7136\u89c4\u8303\u5316\u6709\u5229\u4e8e\u5b58\u50a8\uff0c\u4f46\u5e76\u4e0d\u603b\u662f\u6709\u5229\u4e8e\u903b\u8f91\u3002\u590d\u6742\u7684\u4e1a\u52a1\u89c4\u5219\u901a\u5e38\u9700\u8981\u4ece\u591a\u4e2a\u6765\u6e90\u805a\u5408\u6570\u636e\u3002\u5982\u679c\u903b\u8f91\u4ee5\u8bfb\u53d6\u4e3a\u4e3b\uff0c\u53ef\u4ee5\u8003\u8651\u5bf9\u7279\u5b9a\u5c5e\u6027\u8fdb\u884c\u53cd\u89c4\u8303\u5316\u3002<\/p>\n

            \n
          • \u7f13\u5b58\u603b\u8ba1\uff1a<\/strong> \u4e0d\u9700\u8981\u6bcf\u6b21\u8ba1\u7b97\u603b\u8ba1\u65f6\u90fd\u5bf9\u660e\u7ec6\u9879\u6c42\u548c\uff0c\u800c\u662f\u5c06 total_amount<\/em> \u5b58\u50a8\u5728\u8ba2\u5355\u8868\u4e2d\u3002\u6bcf\u5f53\u660e\u7ec6\u9879\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u66f4\u65b0\u6b64\u5b57\u6bb5\u3002<\/li>\n
          • \u72b6\u6001\u6807\u5fd7\uff1a<\/strong> \u5982\u679c\u7528\u6237\u72b6\u6001\u51b3\u5b9a\u8bbf\u95ee\u6743\u9650\uff0c\u5e94\u5c06\u5176\u5b58\u50a8\u5728\u5217\u4e2d\uff0c\u800c\u4e0d\u662f\u901a\u8fc7\u5386\u53f2\u8868\u8fdb\u884c\u8fde\u63a5\u3002\u8fd9\u53ef\u4ee5\u52a0\u5feb\u6743\u9650\u68c0\u67e5\u903b\u8f91\u7684\u6267\u884c\u901f\u5ea6\u3002<\/li>\n<\/ul>\n

            \u8fd9\u79cd\u65b9\u6cd5\u4ee5\u727a\u7272\u5b58\u50a8\u7a7a\u95f4\u4e3a\u4ee3\u4ef7\uff0c\u6362\u53d6\u67e5\u8be2\u901f\u5ea6\u548c\u903b\u8f91\u7b80\u6d01\u6027\u3002\u5fc5\u987b\u8c28\u614e\u7ba1\u7406\uff0c\u4ee5\u907f\u514d\u6570\u636e\u4e0d\u4e00\u81f4\u3002<\/p>\n

            3. \u663e\u5f0f\u72b6\u6001\u8868\u793a<\/h3>\n

            \u5bf9\u4e8e\u5de5\u4f5c\u6d41\uff0c\u6570\u636e\u5e93\u5e94\u663e\u5f0f\u53cd\u6620\u72b6\u6001\u3002\u4f7f\u7528\u4e13\u7528\u7684\u72b6\u6001\u5217\uff0c\u5e76\u9650\u5b9a\u5176\u53d6\u503c\u8303\u56f4\u3002\u907f\u514d\u4f7f\u7528\u81ea\u7531\u6587\u672c\u5b57\u6bb5\u8868\u793a\u72b6\u6001\u3002<\/p>\n

              \n
            • \u679a\u4e3e\u503c\uff1a<\/strong> \u660e\u786e\u5b9a\u4e49\u5141\u8bb8\u7684\u72b6\u6001\u3002\u8fd9\u4f7f\u5f97\u62a5\u544a\u548c\u903b\u8f91\u5904\u7406\u66f4\u52a0\u7b80\u5355\u3002<\/li>\n
            • \u8f6c\u6362\u8868\uff1a<\/strong> \u5bf9\u4e8e\u590d\u6742\u7684\u5de5\u4f5c\u6d41\uff0c\u4f7f\u7528\u8fde\u63a5\u8868\u6765\u8bb0\u5f55\u5386\u53f2\u3002\u8fd9\u4f7f\u60a8\u80fd\u591f\u91cd\u5efa\u5230\u8fbe\u5f53\u524d\u72b6\u6001\u6240\u7ecf\u5386\u7684\u903b\u8f91\u8def\u5f84\u3002<\/li>\n<\/ul>\n

              \u5c06\u903b\u8f91\u6620\u5c04\u5230\u6a21\u5f0f\uff1a\u4e00\u4e2a\u5b9e\u7528\u7684\u8868\u683c \ud83d\udcca<\/h2>\n

              \u4e3a\u4e86\u76f4\u89c2\u5c55\u793a\u62bd\u8c61\u89c4\u5219\u5982\u4f55\u8f6c\u5316\u4e3a\u5177\u4f53\u7ed3\u6784\uff0c\u8bf7\u53c2\u8003\u4e0b\u9762\u7684\u6620\u5c04\u3002\u8be5\u8868\u683c\u5c55\u793a\u4e86\u5e38\u89c1\u7684\u4e1a\u52a1\u9700\u6c42\u53ca\u5176\u5bf9\u5e94\u7684\u6570\u636e\u5efa\u6a21\u6a21\u5f0f\u3002<\/p>\n\n\n\n\n\n\n\n\n\n\n
              \u4e1a\u52a1\u9700\u6c42<\/th>\n\u903b\u8f91\u542b\u4e49<\/th>\n\u6a21\u5f0f\u5b9e\u73b0<\/th>\n<\/tr>\n<\/thead>\n
              \u4e00\u4e2a\u7528\u6237\u53ea\u80fd\u6709\u4e00\u4e2a\u6d3b\u8dc3\u7684\u8ba2\u9605<\/td>\n\u5bf9\u6d3b\u8dc3\u72b6\u6001\u7684\u552f\u4e00\u6027\u7ea6\u675f<\/td>\nUNIQUE (user_id, status)<\/code> \u5176\u4e2d status = \u2018active\u2019<\/td>\n<\/tr>\n
              \u5e93\u5b58\u4e0d\u80fd\u4f4e\u4e8e\u96f6<\/td>\n\u5199\u5165\u65f6\u9a8c\u8bc1<\/td>\nCHECK (\u6570\u91cf >= 0)<\/code>\u6216\u89e6\u53d1\u5668\u903b\u8f91<\/td>\n<\/tr>\n
              \u8ba2\u5355\u5fc5\u987b\u5c5e\u4e8e\u73b0\u6709\u5ba2\u6237<\/td>\n\u5f15\u7528\u5b8c\u6574\u6027<\/td>\n\u5916\u952e (customer_id) \u53c2\u8003 Customers(id)<\/code><\/td>\n<\/tr>\n
              \u6298\u6263\u6309\u6bcf\u4ef6\u5546\u54c1\u8ba1\u7b97<\/td>\n\u975e\u89c4\u8303\u5316\u5b58\u50a8<\/td>\n\u5b58\u50a8 \u6298\u6263\u4ef7<\/code>\u5728 OrderItem \u4e0a\uff0c\u66f4\u6539\u65f6\u66f4\u65b0<\/td>\n<\/tr>\n
              \u65e5\u5fd7\u5fc5\u987b\u4fdd\u75595\u5e74<\/td>\n\u751f\u547d\u5468\u671f\u7ba1\u7406<\/td>\n\u521b\u5efa\u65f6\u95f4<\/code>\u5217 + \u540e\u53f0\u4efb\u52a1\u7528\u4e8e\u5f52\u6863<\/td>\n<\/tr>\n
              \u89d2\u8272\u51b3\u5b9a\u529f\u80fd\u8bbf\u95ee\u6743\u9650<\/td>\n\u5173\u8054\u6620\u5c04<\/td>\n\u5173\u8054\u8868 \u89d2\u8272\u6743\u9650<\/code>\u5c06\u7528\u6237\u4e0e\u529f\u80fd\u5173\u8054<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

              \u6b64\u6620\u5c04\u786e\u4fdd\u6bcf\u4e2a\u89c4\u5219\u5728\u6570\u636e\u6a21\u578b\u4e2d\u90fd\u6709\u5176\u5f52\u5c5e\u3002\u5b83\u9632\u6b62\u4e86\u903b\u8f91\u4ec5\u5b58\u5728\u4e8e\u4ee3\u7801\u4e2d\u800c\u6570\u636e\u5374\u5904\u4e8e\u8106\u5f31\u72b6\u6001\u7684\u60c5\u51b5\u3002<\/p>\n

              \u9a8c\u8bc1\u4e0e\u7ea6\u675f\uff1a\u5b89\u5168\u7f51 \ud83d\udee1\ufe0f<\/h2>\n

              \u7ea6\u675f\u662f\u6570\u636e\u5b8c\u6574\u6027\u7b2c\u4e00\u9053\u9632\u7ebf\u3002\u5b83\u4eec\u7531\u6570\u636e\u5e93\u5f15\u64ce\u5f3a\u5236\u6267\u884c\uff0c\u56e0\u6b64\u6bd4\u5e94\u7528\u5c42\u68c0\u67e5\u66f4\u5feb\u4e14\u66f4\u53ef\u9760\u3002\u7136\u800c\uff0c\u5b83\u4eec\u4e0d\u5e94\u662f\u552f\u4e00\u7684\u552f\u4e00<\/em>\u5c42\u3002<\/p>\n

              \u7ea6\u675f\u7c7b\u578b<\/h3>\n
                \n
              • \u4e3b\u952e\uff1a<\/strong> \u786e\u4fdd\u6bcf\u6761\u8bb0\u5f55\u90fd\u5177\u6709\u552f\u4e00\u6807\u8bc6\u6027\u3002\u8fd9\u662f\u6240\u6709\u5173\u7cfb\u7684\u57fa\u7840\u3002<\/li>\n
              • \u5916\u952e\uff1a<\/strong> \u7ef4\u62a4\u8868\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u5b83\u4eec\u53ef\u4ee5\u9632\u6b62\u51fa\u73b0\u5b64\u7acb\u8bb0\u5f55\u3002<\/li>\n
              • \u68c0\u67e5\u7ea6\u675f\uff1a<\/strong> \u4e3a\u5217\u7684\u503c\u5b9a\u4e49\u7279\u5b9a\u6761\u4ef6\u3002\u9002\u7528\u4e8e\u8303\u56f4\u3001\u683c\u5f0f\u6216\u903b\u8f91\uff0c\u4f8b\u5982price > 0<\/code>.<\/li>\n
              • \u552f\u4e00\u6027\u7ea6\u675f\uff1a<\/strong> \u9632\u6b62\u91cd\u590d\u6570\u636e\u3002\u5bf9\u4e8e\u7535\u5b50\u90ae\u4ef6\u3001\u7528\u6237\u540d\u6216SKU\u6765\u8bf4\u81f3\u5173\u91cd\u8981\u3002<\/li>\n<\/ul>\n

                \u89e6\u53d1\u5668\u548c\u5b58\u50a8\u8fc7\u7a0b<\/h3>\n

                \u6709\u65f6\uff0c\u7ea6\u675f\u5e76\u4e0d\u8db3\u591f\u3002\u5f53\u4ea4\u6613\u53d1\u751f\u65f6\uff0c\u9700\u8981\u5728\u591a\u4e2a\u8868\u4e2d\u66f4\u65b0\u4f59\u989d\u7b49\u590d\u6742\u903b\u8f91\uff0c\u8fd9\u5c31\u9700\u8981\u4f7f\u7528\u89e6\u53d1\u5668\u3002\u867d\u7136\u529f\u80fd\u5f3a\u5927\uff0c\u4f46\u5e94\u8c28\u614e\u4f7f\u7528\u89e6\u53d1\u5668\u3002\u5b83\u4eec\u53ef\u80fd\u4f1a\u9690\u85cf\u5f00\u53d1\u4eba\u5458\u7684\u903b\u8f91\uff0c\u4f7f\u8c03\u8bd5\u53d8\u5f97\u56f0\u96be\u3002<\/p>\n

                  \n
                • \u4f7f\u7528\u573a\u666f\uff1a<\/strong> \u81ea\u52a8\u5f52\u6863\u65e7\u8bb0\u5f55\u3002<\/li>\n
                • \u4f7f\u7528\u573a\u666f\uff1a<\/strong> \u5728\u63d2\u5165\u524d\u8ba1\u7b97\u6d3e\u751f\u5b57\u6bb5\u3002<\/li>\n
                • \u8b66\u544a\uff1a<\/strong> \u907f\u514d\u5c06\u66f4\u9002\u5408\u5728\u5e94\u7528\u5c42\u5904\u7406\u7684\u4e1a\u52a1\u903b\u8f91\u653e\u5165\u89e6\u53d1\u5668\u3002\u89e6\u53d1\u5668\u5e94\u4e13\u6ce8\u4e8e\u6570\u636e\u5b8c\u6574\u6027\uff0c\u800c\u975e\u9762\u5411\u7528\u6237\u7684\u6d41\u7a0b\u3002<\/li>\n<\/ul>\n

                  \u6f14\u8fdb\u4e0e\u91cd\u6784 \ud83d\udd04<\/h2>\n

                  \u4e1a\u52a1\u89c4\u5219\u4f1a\u53d8\u5316\u3002\u4e00\u5bb6\u516c\u53f8\u53ef\u80fd\u6700\u521d\u9500\u552e\u8ba2\u9605\u670d\u52a1\uff0c\u540e\u6765\u8f6c\u4e3a\u4e00\u6b21\u6027\u8d2d\u4e70\u3002\u6570\u636e\u6a21\u578b\u5fc5\u987b\u80fd\u591f\u6f14\u8fdb\uff0c\u800c\u4e0d\u4f1a\u7834\u574f\u73b0\u6709\u903b\u8f91\u3002<\/p>\n

                  \u6a21\u5f0f\u7248\u672c\u63a7\u5236<\/h3>\n

                  ERD \u7684\u66f4\u6539\u5e94\u8fdb\u884c\u7248\u672c\u63a7\u5236\u3002\u4f7f\u7528\u8fc1\u79fb\u811a\u672c\u6765\u7ba1\u7406\u53d8\u66f4\u8fc7\u7a0b\u3002\u8fd9\u6837\uff0c\u5982\u679c\u67d0\u4e2a\u66f4\u6539\u610f\u5916\u7834\u574f\u4e86\u4e1a\u52a1\u903b\u8f91\uff0c\u4f60\u5c31\u53ef\u4ee5\u56de\u6eda\u3002<\/p>\n

                    \n
                  • \u5411\u540e\u517c\u5bb9\u6027\uff1a<\/strong> \u6dfb\u52a0\u5217\u65f6\uff0c\u5e94\u5148\u5c06\u5176\u8bbe\u4e3a\u53ef\u4e3a\u7a7a\u3002\u8fd9\u6837\u53ef\u4ee5\u5728\u90e8\u7f72\u65b0\u903b\u8f91\u7684\u540c\u65f6\uff0c\u8ba9\u65e7\u903b\u8f91\u7ee7\u7eed\u8fd0\u884c\u3002<\/li>\n
                  • \u5f03\u7528\uff1a<\/strong> \u4e0d\u8981\u7acb\u5373\u5220\u9664\u5217\u3002\u5e94\u5c06\u5176\u6807\u8bb0\u4e3a\u5df2\u5f03\u7528\uff0c\u5e76\u4fdd\u7559\u4e00\u6bb5\u65f6\u95f4\u4ee5\u652f\u6301\u65e7\u7684\u96c6\u6210\u3002<\/li>\n
                  • \u6587\u6863\uff1a<\/strong> \u4fdd\u6301\u6a21\u5f0f\u6587\u6863\u4e0e\u4ee3\u7801\u540c\u6b65\u3002ERD \u4e2d\u7684\u6ce8\u91ca\u5e94\u89e3\u91ca\u5217\u80cc\u540e\u7684\u4e1a\u52a1\u89c4\u5219\u3002<\/li>\n<\/ul>\n

                    \u4e3a\u903b\u8f91\u800c\u91cd\u6784<\/h3>\n

                    \u968f\u7740\u9700\u6c42\u7684\u589e\u957f\uff0c\u521d\u59cb\u7684ERD\u53ef\u80fd\u4f1a\u6210\u4e3a\u74f6\u9888\u3002\u4f60\u53ef\u80fd\u9700\u8981\u62c6\u5206\u8868\u6216\u5408\u5e76\u8868\u3002\u8fd9\u662f\u4e00\u9879\u91cd\u5927\u4efb\u52a1\uff0c\u9700\u8981\u4ed4\u7ec6\u89c4\u5212\u3002<\/p>\n

                      \n
                    • \u8bc6\u522b\u903b\u8f91\uff1a<\/strong> \u786e\u5b9a\u54ea\u4e9b\u4e1a\u52a1\u89c4\u5219\u5bfc\u81f4\u4e86\u6027\u80fd\u6216\u5b8c\u6574\u6027\u95ee\u9898\u3002<\/li>\n
                    • \u89c4\u5212\u8fc1\u79fb\uff1a<\/strong> \u521b\u5efa\u4e00\u4e2a\u811a\u672c\uff0c\u5c06\u6570\u636e\u79fb\u52a8\u5230\u65b0\u7ed3\u6784\u4e2d\uff0c\u540c\u65f6\u4fdd\u6301\u4e00\u81f4\u6027\u3002<\/li>\n
                    • \u4e25\u683c\u6d4b\u8bd5\uff1a<\/strong> \u4f7f\u7528\u5386\u53f2\u6570\u636e\u8fd0\u884c\u65b0\u903b\u8f91\uff0c\u4ee5\u786e\u4fdd\u5176\u884c\u4e3a\u7b26\u5408\u9884\u671f\u3002<\/li>\n<\/ul>\n

                      \u534f\u4f5c\u4e0e\u6587\u6863 \ud83d\udcdd<\/h2>\n

                      \u6280\u672f\u5bf9\u9f50\u53ea\u662f\u6218\u6597\u7684\u4e00\u534a\uff0c\u53e6\u4e00\u534a\u662f\u6c9f\u901a\u3002\u6570\u636e\u5e93\u6a21\u5f0f\u662f\u6570\u636e\u5c42\u4e0e\u5e94\u7528\u5c42\u4e4b\u95f4\u7684\u5408\u540c\u3002\u6240\u6709\u76f8\u5173\u4eba\u5458\u90fd\u5fc5\u987b\u7406\u89e3\u5b83\u3002<\/p>\n

                      \u5171\u4eab\u672f\u8bed<\/h3>\n

                      \u786e\u4fdd\u6570\u636e\u5e93\u4e2d\u4f7f\u7528\u7684\u672f\u8bed\u4e0e\u4e1a\u52a1\u672f\u8bed\u4e00\u81f4\u3002\u5982\u679c\u4e1a\u52a1\u79f0\u4e4b\u4e3a\u201c\u5ba2\u6237\u201d\uff0c\u5c31\u4e0d\u8981\u5c06\u8868\u547d\u540d\u4e3a\u201c\u5ba2\u6237\u201d\u3002\u5982\u679c\u4e1a\u52a1\u5c06\u5b57\u6bb5\u79f0\u4e3a\u201c\u72b6\u6001\u201d\uff0c\u5c31\u4e0d\u8981\u79f0\u4e4b\u4e3a\u201c\u6807\u5fd7\u201d\u3002\u4e00\u81f4\u6027\u53ef\u4ee5\u964d\u4f4e\u8ba4\u77e5\u8d1f\u62c5\u3002<\/p>\n

                      \u53ef\u89c6\u5316\u6587\u6863<\/h3>\n

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