{"id":913,"date":"2025-03-22T14:39:29","date_gmt":"2025-03-22T06:39:29","guid":{"rendered":"https:\/\/eve2333.top\/?p=913"},"modified":"2025-03-22T14:39:30","modified_gmt":"2025-03-22T06:39:30","slug":"mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e5%85%a5%e9%97%a8%e5%88%b0%e5%a4%a7%e8%9b%87%e5%b0%9a%e7%a1%85%e8%b0%b7%e5%ae%8b%e7%ba%a2%e5%ba%b7%e8%80%81%e5%b8%88%e7%ac%94%e8%ae%b0-%e9%ab%98%e7%ba%a7%e7%af%87-p-11","status":"publish","type":"post","link":"https:\/\/eve2333.top\/?p=913","title":{"rendered":"MySQL\u6570\u636e\u5e93\u5165\u95e8\u5230\u5927\u86c7\u5c1a\u7845\u8c37\u5b8b\u7ea2\u5eb7\u8001\u5e08\u7b14\u8bb0 \u9ad8\u7ea7\u7bc7 part11"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">&nbsp;\u7b2c11\u7ae0_\u6570\u636e\u5e93\u7684\u8bbe\u8ba1\u89c4\u8303<\/h1>\n\n\n\n<p>\u826f\u597d\u7684\u6570\u636e\u5e93\u8bbe\u8ba1\u5219\u6709\u4ee5\u4e0b\u4f18\u70b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u00b7\u8282\u7701\u6570\u636e\u7684\u5b58\u50a8\u7a7a\u95f4<\/li>\n\n\n\n<li>\u00b7\u80fd\u591f\u4fdd\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027<\/li>\n\n\n\n<li>\u00b7\u65b9\u4fbf\u8fdb\u884c\u6570\u636e\u5e93\u5e94\u7528\u7cfb\u7edf\u7684\u5f00\u53d1<\/li>\n<\/ul>\n\n\n\n<p>\u603b\u4e4b\uff0c\u5f00\u59cb\u8bbe\u7f6e\u6570\u636e\u5e93\u7684\u65f6\u5019\uff0c\u6211\u4eec\u5c31\u9700\u8981\u91cd\u89c6\u6570\u636e\u8868\u7684\u8bbe\u8ba1\u3002\u4e3a\u4e86\u5efa\u7acb\u5197\u4f59\u8f83\u5c0f\u3001\u7ed3\u6784\u5408\u7406\u7684\u6570\u636e\u5e93\uff0c\u8bbe\u8ba1\u6570\u636e\u5e93\u65f6\u5fc5\u987b\u9075\u5faa\u4e00\u5b9a\u7684\u89c4\u5219\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2.\u8303\u5f0f&nbsp;<\/h2>\n\n\n\n<p><strong>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u5173\u4e8e\u6570\u636e\u8868\u8bbe\u8ba1\u7684\u57fa\u672c\u539f\u5219\u3001\u89c4\u5219\u5c31\u79f0\u4e3a\u8303\u5f0f\u3002<\/strong>\u53ef\u4ee5\u7406\u89e3\u4e3a\uff0c\u4e00\u5f20\u6570\u636e\u8868\u7684\u8bbe\u8ba1\u7ed3\u6784\u9700\u8981\u6ee1\u8db3\u7684\u67d0\u79cd\u8bbe\u8ba1\u6807\u51c6\u7684\u7ea7\u522b\u3002\u8981\u60f3\u8bbe\u8ba1\u4e00\u4e2a\u7ed3\u6784\u5408\u7406\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u5fc5\u987b\u6ee1\u8db3\u4e00\u5b9a\u7684\u8303\u5f0f\u3002<\/p>\n\n\n\n<p>\u8303\u5f0f\u7684\u82f1\u6587\u540d\u79f0\u662fNormalForm\uff0c\u7b80\u79f0NF\u3002\u5b83\u662f\u82f1\u56fd\u4ebaE.F.Codd\u5728\u4e0a\u4e2a\u4e16\u7eaa70\u5e74\u4ee3\u63d0\u51fa\u5173\u7cfb\u6570\u636e\u5e93\u6a21\u578b\u540e\u603b\u7ed3\u51fa\u6765\u7684\u3002\u8303\u5f0f\u662f\u5173\u7cfb\u6570\u636e\u5e93\u7406\u8bba\u7684\u57fa\u7840\uff0c\u4e5f\u662f\u6211\u4eec\u5728\u8bbe\u8ba1\u6570\u636e\u5e93\u7ed3\u6784\u8fc7\u7a0b\u4e2d\u6240\u8981\u9075\u5faa\u7684\u89c4\u5219\u548c\u6307\u5bfc\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p>\u76ee\u524d\u5173\u7cfb\u578b\u6570\u636e\u5e93\u6709\u516d\u79cd\u5e38\u89c1\u8303\u5f0f\uff0c\u6309\u7167\u8303\u5f0f\u7ea7\u522b\uff0c<strong>\u4ece\u4f4e\u5230\u9ad8\u5206\u522b\u662f\uff1a\u7b2c\u4e00\u8303\u5f0f\uff081NF\uff09\u3001\u7b2c\u4e8c\u8303\u5f0f\uff082NF\uff09\u3001\u7b2c\u4e09\u8303\u5f0f\uff083NF\uff09\u3001\u5df4\u65af-\u79d1\u5fb7\u8303\u5f0f\uff08BCNF\uff09\u3001\u7b2c\u56db\u8303\u5f0f\uff084NF\uff09\u548c\u7b2c\u4e94\u8303\u5f0f\uff085NF\uff0c\u53c8\u79f0\u5b8c\u7f8e\u8303\u5f0f\uff09\u3002<\/strong><\/p>\n\n\n\n<p>\u6570\u636e\u5e93\u7684\u8303\u5f0f\u8bbe\u8ba1\u8d8a\u9ad8\u9636\uff0c\u4f59\u5ea6\u5c31\u8d8a\u4f4e\uff0c\u540c\u65f6\u9ad8\u9636\u7684\u8303\u5f0f\u4e00\u5b9a\u7b26\u5408\u4f4e\u9636\u8303\u5f0f\u7684\u8981\u6c42\uff0c\u6ee1\u8db3\u6700\u4f4e\u8981\u6c42\u7684\u8303\u5f0f\u662f\u7b2c\u4e00\u8303\u5f0f\uff081NF\uff09\u3002\u5728\u7b2c\u4e00\u8303\u5f0f\u7684\u57fa\u7840\u4e0a\u8fdb\u4e00\u6b65\u6ee1\u8db3\u66f4\u591a\u89c4\u8303\u8981\u6c42\u7684\u79f0\u4e3a\u7b2c\u4e8c\u8303\u5f0f\uff082NF\uff09\uff0c\u5176\u4f59\u8303\u5f0f\u4ee5\u6b21\u7c7b\u63a8\u3002<\/p>\n\n\n\n<p>\u4e00\u822c\u6765\u8bf4\uff0c\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u8bbe\u8ba1\u4e2d\uff0c\u6700\u9ad8\u4e5f\u5c31\u9075\u5faa\u5230BCNF\uff0c\u666e\u904d\u8fd8\u662f3NF\u3002\u4f46\u4e5f\u4e0d\u7edd\u5bf9\uff0c\u6709\u65f6\u5019\u4e3a\u4e86\u63d0\u9ad8\u67d0\u4e9b\u67e5\u8be2\u6027\u80fd\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u7834\u574f\u8303\u5f0f\u89c4\u5219\uff0c\u4e5f\u5c31\u662f\u53cd\u89c4\u8303\u5316\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.3 \u952e\u548c\u76f8\u5173\u5c5e\u6027\u7684\u6982\u5ff5&nbsp;<\/h3>\n\n\n\n<p>\u8303\u5f0f\u7684\u5b9a\u4e49\u4f1a\u4f7f\u7528\u5230\u4e3b\u952e\u548c\u5019\u9009\u952e\uff0c\u6570\u636e\u5e93\u4e2d\u7684\u952e\uff08Key\uff09\u7531\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u5c5e\u6027\u7ec4\u6210\u3002\u6570\u636e\u8868\u4e2d\u5e38\u7528\u7684\u51e0\u79cd\u952e\u548c\u5c5e\u6027\u7684\u5b9a\u4e49\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u00b7\u8d85\u952e\uff1a\u80fd\u552f\u4e00\u6807\u8bc6\u5143\u7ec4\u7684\u5c5e\u6027\u96c6\u53eb\u505a\u8d85\u952e\u3002<\/li>\n\n\n\n<li>\u00b7\u5019\u9009\u952e\uff1a\u5982\u679c\u8d85\u952e\u4e0d\u5305\u62ec\u591a\u4f59\u7684\u5c5e\u6027\uff0c\u90a3\u4e48\u8fd9\u4e2a\u8d85\u952e\u5c31\u662f\u5019\u9009\u952e\u3002<\/li>\n\n\n\n<li>\u00b7\u4e3b\u952e\uff1a\u7528\u6237\u53ef\u4ee5\u4ece\u5019\u9009\u952e\u4e2d\u9009\u62e9\u4e00\u4e2a\u4f5c\u4e3a\u4e3b\u952e\u3002<\/li>\n\n\n\n<li>\u00b7\u5916\u952e\uff1a\u5982\u679c\u6570\u636e\u8868R1\u4e2d\u7684\u67d0\u5c5e\u6027\u96c6\u4e0d\u662fR1\u7684\u4e3b\u952e\uff0c\u800c\u662f\u53e6\u4e00\u4e2a\u6570\u636e\u8868R2\u7684\u4e3b\u952e\uff0c\u90a3\u4e48\u8fd9\u4e2a\u5c5e\u6027\u96c6\u5c31\u662f\u6570\u636e\u8868R1\u7684\u5916\u952e\u3002<\/li>\n\n\n\n<li>\u00b7\u4e3b\u5c5e\u6027\uff1a\u5305\u542b\u5728\u4efb\u4e00\u5019\u9009\u952e\u4e2d\u7684\u5c5e\u6027\u79f0\u4e3a\u4e3b\u5c5e\u6027\u3002<\/li>\n\n\n\n<li>\u00b7\u975e\u4e3b\u5c5e\u6027\uff1a\u4e0e\u4e3b\u5c5e\u6027\u76f8\u5bf9\uff0c\u6307\u7684\u662f\u4e0d\u5305\u542b\u5728\u4efb\u4f55\u4e00\u4e2a\u5019\u9009\u952e\u4e2d\u7684\u5c5e\u6027\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u901a\u5e38\uff0c\u6211\u4eec\u4e5f\u5c06\u5019\u9009\u952e\u79f0\u4e4b\u4e3a\u201c\u7801\u201d\uff0c\u628a\u4e3b\u952e\u4e5f\u79f0\u4e3a\u201c\u4e3b\u7801\u201d\u3002\u56e0\u4e3a\u952e\u53ef\u80fd\u662f\u7531\u591a\u4e2a\u5c5e\u6027\u7ec4\u6210\u7684\uff0c\u9488\u5bf9\u5355\u4e2a\u5c5e\u6027\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u7528\u4e3b\u5c5e\u6027\u548c\u975e\u4e3b\u5c5e\u6027\u6765\u8fdb\u884c\u533a\u5206<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>&nbsp;\u7403\u5458\u8868\uff08player\uff09\uff1a\u7403\u5458\u7f16\u53f7\u4e28\u59d3\u540d\u4e28\u8eab\u4efd\u8bc1\u53f7\u4e28\u5e74\u9f84|\u7403\u961f\u7f16\u53f7<br>\u7403\u961f\u8868\uff08team\uff09\uff1a\u7403\u961f\u7f16\u53f7|\u4e3b\u6559\u7ec3|\u7403\u961f\u6240\u5728\u5730<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u00b7\u8d85\u952e\uff1a\u5bf9\u4e8e\u7403\u5458\u8868\u6765\u8bf4\uff0c\u8d85\u952e\u5c31\u662f\u5305\u62ec\u7403\u5458\u7f16\u53f7\u6216\u8005\u8eab\u4efd\u8bc1\u53f7\u7684\u4efb\u610f\u7ec4\u5408\uff0c\u6bd4\u5982\uff08\u7403\u5458\u7f16\u53f7\uff09\uff08\u7403\u5458\u7f16\u53f7\uff0c\u59d3\u540d\uff09\uff08\u8eab\u4efd\u8bc1\u53f7\uff0c\u5e74\u9f84\uff09\u7b49\u3002<\/li>\n\n\n\n<li>\u00b7\u5019\u9009\u952e\uff1a\u5c31\u662f\u6700\u5c0f\u7684\u8d85\u952e\uff0c\u5bf9\u4e8e\u7403\u5458\u8868\u6765\u8bf4\uff0c\u5019\u9009\u952e\u5c31\u662f\uff08\u7403\u5458\u7f16\u53f7\uff09\u6216\u8005\uff08\u8eab\u4efd\u8bc1\u53f7\uff09<\/li>\n\n\n\n<li>\u00b7\u4e3b\u952e\uff1a\u6211\u4eec\u81ea\u5df1\u9009\u5b9a\uff0c\u4e5f\u5c31\u662f\u4ece\u5019\u9009\u952e\u4e2d\u9009\u62e9\u4e00\u4e2a\uff0c\u6bd4\u5982\uff08\u7403\u5458\u7f16\u53f7\uff09\u3002<\/li>\n\n\n\n<li>\u00b7\u5916\u952e\uff1a\u7403\u5458\u8868\u4e2d\u7684\u7403\u961f\u7f16\u53f7\u3002<\/li>\n\n\n\n<li>\u00b7\u4e3b\u5c5e\u6027\u3001\u975e\u4e3b\u5c5e\u6027\uff1a\u5728\u7403\u5458\u8868\u4e2d\uff0c\u4e3b\u5c5e\u6027\u662f\uff08\u7403\u5458\u7f16\u53f7\uff09\uff08\u8eab\u4efd\u8bc1\u53f7\uff09\uff0c\u5176\u4ed6\u7684\u5c5e\u6027\uff08\u59d3\u540d\uff09\uff08\u5e74\u9f84\uff09\uff08\u7403\u961f\u7f16\u53f7\uff09\u90fd\u662f\u975e\u4e3b\u5c5e\u6027\u3002<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">&nbsp;2.4\u7b2c\u4e00\u8303\u5f0f(1st NF)<\/h3>\n\n\n\n<p>\u7b2c\u4e00\u8303\u5f0f\u4e3b\u8981\u662f\u786e\u4fdd\u6570\u636e\u8868\u4e2d\u6bcf\u4e2a\u5b57\u6bb5\u7684\u503c\u5fc5\u987b\u5177\u6709\u539f\u5b50\u6027\uff0c\u4e5f\u5c31\u662f\u8bf4\u6570\u636e\u8868\u4e2d\u6bcf\u4e2a\u5b57\u6bb5\u7684\u503c\u4e3a\u4e0d\u53ef\u518d\u6b21\u62c6\u5206\u7684\u6700\u5c0f\u6570\u636e\u5355\u5143\u3002<\/p>\n\n\n\n<p>\u4e3e\u4f8b1\uff1a<\/p>\n\n\n\n<p>\u5047\u8bbe\u4e00\u5bb6\u516c\u53f8\u8981\u5b58\u50a8\u5458\u5de5\u7684\u59d3\u540d\u548c\u8054\u7cfb\u65b9\u5f0f\u3002\u5b83\u521b\u5efa\u4e00\u4e2a\u5982\u4e0b\u8868\uff1a<\/p>\n\n\n\n<p>emp_id | emp_name | emp_address | emp_mobile<br>101 &nbsp; &nbsp;| zhangsan | beijing &nbsp; &nbsp; | 8912312390<br>102 &nbsp; &nbsp;| lisi &nbsp; &nbsp; | liaoning &nbsp; &nbsp;| 8812121212<br>103 &nbsp; &nbsp;| wangwu &nbsp; | hebei &nbsp; &nbsp; &nbsp; | 7778812<br>104 &nbsp; &nbsp;| zhaoliu &nbsp;| shanghai &nbsp; &nbsp;| 9999000012 1878120923<\/p>\n\n\n\n<p>\u8be5\u8868\u4e0d\u7b26\u54081NF\uff0c\u56e0\u4e3a\u89c4\u5219\u8bf4\u201c\u8868\u7684\u6bcf\u4e2a\u5c5e\u6027\u5fc5\u987b\u5177\u6709\u539f\u5b50\uff08\u5355\u4e2a\uff09\u503c\u201d\uff0clisi\u548czhaoliu\u5458\u5de5\u7684emp_mobile\u503c\u8fdd\u53cd\u4e86\u8be5\u89c4\u5219\u3002\u4e3a\u4e86\u4f7f\u8868\u7b26\u54081NF\uff0c\u6211\u4eec\u5e94\u8be5\u6709\u5982\u4e0b\u8868\u6570\u636e\uff1a<\/p>\n\n\n\n<p>emp_id | emp_name | emp_address | emp_mobile<br>101 &nbsp; &nbsp;| zhangsan | beijing &nbsp; &nbsp; | 8912312390<br>102 &nbsp; &nbsp;| lisi &nbsp; &nbsp; | liaoning &nbsp; &nbsp;| 8812121212<br>102 &nbsp; &nbsp;| lisi &nbsp; &nbsp; | liaoning &nbsp; &nbsp;| 9900012222<br>103 &nbsp; &nbsp;| wangwu &nbsp; | hebei &nbsp; &nbsp; &nbsp; | 777881212<br>104 &nbsp; &nbsp;| zhaoliu &nbsp;| shanghai &nbsp; &nbsp;| 9999000012<br>104 &nbsp; &nbsp;| zhaoliu &nbsp;| shanghai &nbsp; &nbsp;| 1878120923<\/p>\n\n\n\n<p>user \u8868\u7684\u8bbe\u8ba1\u4e0d\u7b26\u5408\u7b2c\u4e00\u8303\u5f0f<\/p>\n\n\n\n<p>\u5b57\u6bb5\u540d\u79f0 &nbsp; &nbsp;\u5b57\u6bb5\u7c7b\u578b &nbsp; &nbsp; \u662f\u5426\u662f\u4e3b\u952e &nbsp;\u8bf4\u660e<br>id &nbsp; &nbsp; &nbsp; &nbsp; INT &nbsp; &nbsp; &nbsp; &nbsp; \u662f &nbsp; &nbsp; &nbsp; &nbsp;\u4e3b\u952eid<br>username &nbsp; VARCHAR(30) &nbsp;\u5426 &nbsp; &nbsp; &nbsp; &nbsp;\u7528\u6237\u540d<br>password &nbsp; VARCHAR(50) &nbsp;\u5426 &nbsp; &nbsp; &nbsp; &nbsp;\u5bc6\u7801<br>user_info &nbsp;VARCHAR(255) \u5426 &nbsp; &nbsp; &nbsp; &nbsp;\u7528\u6237\u4fe1\u606f(\u5305\u542b\u771f\u5b9e\u59d3\u540d\u3001\u7535\u8bdd\u3001\u4f4f\u5740)<\/p>\n\n\n\n<p>\u5176\u4e2d\uff0cuser_info\u5b57\u6bb5\u4e3a\u7528\u6237\u4fe1\u606f\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u62c6\u5206\u6210\u66f4\u5c0f\u7c92\u5ea6\u7684\u5b57\u6bb5\uff0c\u4e0d\u7b26\u5408\u6570\u636e\u5e93\u8bbe\u8ba1\u5bf9\u7b2c\u4e00\u8303\u5f0f\u7684\u8981\u6c42\u3002\u5c06user_info\u62c6\u5206\u540e\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>\u5b57\u6bb5\u540d\u79f0 &nbsp; &nbsp;\u5b57\u6bb5\u7c7b\u578b &nbsp; &nbsp; \u662f\u5426\u662f\u4e3b\u952e &nbsp;\u8bf4\u660e<br>id &nbsp; &nbsp; &nbsp; &nbsp; INT &nbsp; &nbsp; &nbsp; &nbsp; \u662f &nbsp; &nbsp; &nbsp; &nbsp;\u4e3b\u952eid<br>username &nbsp; VARCHAR(30) &nbsp;\u5426 &nbsp; &nbsp; &nbsp; &nbsp;\u7528\u6237\u540d<br>password &nbsp; VARCHAR(50) &nbsp;\u5426 &nbsp; &nbsp; &nbsp; &nbsp;\u5bc6\u7801<br>real_name &nbsp;VARCHAR(30) &nbsp;\u5426 &nbsp; &nbsp; &nbsp; &nbsp;\u771f\u5b9e\u59d3\u540d<br>phone &nbsp; &nbsp; &nbsp;VARCHAR(12) &nbsp;\u5426 &nbsp; &nbsp; &nbsp; &nbsp;\u8054\u7cfb\u7535\u8bdd<br>address &nbsp; &nbsp;VARCHAR(100) \u5426 &nbsp; &nbsp; &nbsp; &nbsp;\u5bb6\u5ead\u4f4f\u5740<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.5\u7b2c\u4e8c\u8303\u5f0f\uff082nd NF\uff09<\/h3>\n\n\n\n<p>\u7b2c\u4e8c\u8303\u5f0f\u8981\u6c42\uff0c\u5728\u6ee1\u8db3\u7b2c\u4e00\u8303\u5f0f\u7684\u57fa\u7840\u4e0a\uff0c\u8fd8\u8981\u6ee1\u8db3\u6570\u636e\u8868\u91cc\u7684\u6bcf\u4e00\u6761\u6570\u636e\u8bb0\u5f55\uff0c\u90fd\u662f\u53ef\u552f\u4e00\u6807\u8bc6\u7684\u3002\u800c\u4e14\u6240\u6709\u975e\u4e3b\u952e\u5b57\u6bb5\uff0c\u90fd\u5fc5\u987b\u5b8c\u5168\u4f9d\u8d56\u4e3b\u952e\uff0c\u4e0d\u80fd\u53ea\u4f9d\u8d56\u4e3b\u952e\u7684\u4e00\u90e8\u5206*\u3002\u5982\u679c\u77e5\u9053\u4e3b\u952e\u7684\u6240\u6709\u5c5e\u6027\u7684\u503c\uff0c\u5c31\u53ef\u4ee5\u68c0\u7d22\u5230\u4efb\u4f55\u5143\u7ec4\uff08\u884c\uff09\u7684\u4efb\u4f55\u5c5e\u6027\u7684\u4efb\u4f55\u503c\u3002\uff08\u8981\u6c42\u4e2d\u7684\u4e3b\u952e\uff0c\u5176\u5b9e\u53ef\u4ee5\u62d3\u5c55\u66ff\u6362\u4e3a\u5019\u9009\u952e\uff09\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6bd4\u8d5b\u8868 player_game\uff0c\u91cc\u9762\u5305\u542b\u7403\u5458\u7f16\u53f7\u3001\u59d3\u540d\u3001\u5e74\u9f84\u3001\u6bd4\u8d5b\u7f16\u53f7\u3001\u6bd4\u8d5b\u65f6\u95f4\u548c\u6bd4\u8d5b\u573a\u5730\u7b49\u5c5e\u6027\uff0c\u8fd9\u91cc\u5019\u9009\u952e\u548c\u4e3b\u952e\u90fd\u4e3a\uff08\u7403\u5458\u7f16\u53f7\uff0c\u6bd4\u8d5b\u7f16\u53f7\uff09\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5019\u9009\u952e\uff08\u6216\u4e3b\u952e\uff09\u6765\u51b3\u5b9a\u5982\u4e0b\u7684\u5173\u7cfb\uff1a<br>\uff08\u7403\u5458\u7f16\u53f7\uff0c\u6bd4\u8d5b\u7f16\u53f7\uff09\u2192\uff08\u59d3\u540d\uff0c\u5e74\u9f84\uff0c\u6bd4\u8d5b\u65f6\u95f4\uff0c\u6bd4\u8d5b\u573a\u5730\uff0c\u5f97\u5206\uff09<\/p>\n\n\n\n<p>\u4f46\u662f\u8fd9\u4e2a\u6570\u636e\u8868\u4e0d\u6ee1\u8db3\u7b2c\u4e8c\u8303\u5f0f\uff0c\u56e0\u4e3a\u6570\u636e\u8868\u4e2d\u7684\u5b57\u6bb5\u4e4b\u95f4\u8fd8\u5b58\u5728\u7740\u5982\u4e0b\u7684\u5bf9\u5e94\u5173\u7cfb\uff1a<br>\uff08\u7403\u5458\u7f16\u53f7\uff09\u2192\uff08\u59d3\u540d\uff0c\u5e74\u9f84\uff09<br>\uff08\u6bd4\u8d5b\u7f16\u53f7\uff09\u2192\uff08\u6bd4\u8d5b\u65f6\u95f4\uff0c\u6bd4\u8d5b\u573a\u5730\uff09<\/p>\n\n\n\n<p>\u5bf9\u4e8e\u975e\u4e3b\u5c5e\u6027\u6765\u8bf4\uff0c\u5e76\u975e\u5b8c\u5168\u4f9d\u8d56\u5019\u9009\u952e\u3002\u8fd9\u6837\u4f1a\u4ea7\u751f\u600e\u6837\u7684\u95ee\u9898\u5462\uff1f<br>1. \u6570\u636e\u5197\u4f59\uff1a\u5982\u679c\u4e00\u4e2a\u7403\u5458\u53ef\u4ee5\u53c2\u52a0m\u573a\u6bd4\u8d5b\uff0c\u90a3\u4e48\u7403\u5458\u7684\u59d3\u540d\u548c\u5e74\u9f84\u5c31\u91cd\u590d\u4e86m-1\u6b21\u3002\u4e00\u4e2a\u6bd4\u8d5b\u4e5f\u53ef\u80fd\u4f1a\u6709n\u4e2a\u7403\u5458\u53c2\u52a0\uff0c\u6bd4\u8d5b\u7684\u65f6\u95f4\u548c\u5730\u70b9\u5c31\u91cd\u590d\u4e86n-1\u6b21\u3002<br>2. \u63d2\u5165\u5f02\u5e38\uff1a\u5982\u679c\u6211\u4eec\u60f3\u8981\u6dfb\u52a0\u4e00\u573a\u65b0\u7684\u6bd4\u8d5b\uff0c\u4f46\u662f\u8fd9\u65f6\u8fd8\u6ca1\u6709\u786e\u5b9a\u53c2\u52a0\u7684\u7403\u5458\u90fd\u6709\u8c01\uff0c\u90a3\u4e48\u5c31\u6ca1\u6cd5\u63d2\u5165\u3002<br>3. \u5220\u9664\u5f02\u5e38\uff1a\u5982\u679c\u6211\u8981\u5220\u9664\u67d0\u4e2a\u7403\u5458\u7f16\u53f7\uff0c\u5982\u679c\u6ca1\u6709\u5355\u72ec\u4fdd\u5b58\u6bd4\u8d5b\u8868\u7684\u8bdd\uff0c\u5c31\u4f1a\u540c\u65f6\u628a\u6bd4\u8d5b\u4fe1\u606f\u5220\u9664\u6389\u3002<\/p>\n\n\n\n<p>4. \u66f4\u65b0\u5f02\u5e38\uff1a\u5982\u679c\u6211\u4eec\u8c03\u6574\u4e86\u67d0\u4e2a\u6bd4\u8d5b\u7684\u65f6\u95f4\uff0c\u90a3\u4e48\u6570\u636e\u8868\u4e2d\u6240\u6709\u8fd9\u4e2a\u6bd4\u8d5b\u7684\u65f6\u95f4\u90fd\u9700\u8981\u8fdb\u884c\u8c03\u6574\uff0c\u5426\u5219\u5c31\u4f1a\u51fa\u73b0\u4e00\u573a\u6bd4\u8d5b\u65f6\u95f4\u4e0d\u540c\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u907f\u514d\u51fa\u73b0\u4e0a\u8ff0\u7684\u60c5\u51b5\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u7403\u5458\u6bd4\u8d5b\u8868\u8bbe\u8ba1\u4e3a\u4e0b\u9762\u7684\u4e09\u5f20\u8868\u3002<\/p>\n\n\n\n<p>\u8868\u540d &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;\u5c5e\u6027\uff08\u5b57\u6bb5\uff09<br>\u7403\u5458 player \u8868 &nbsp; &nbsp; &nbsp; \u7403\u5458\u7f16\u53f7\u3001\u59d3\u540d\u548c\u5e74\u9f84\u7b49\u5c5e\u6027<br>\u6bd4\u8d5b game \u8868 &nbsp; &nbsp; &nbsp; &nbsp; \u6bd4\u8d5b\u7f16\u53f7\u3001\u6bd4\u8d5b\u65f6\u95f4\u548c\u6bd4\u8d5b\u573a\u5730\u7b49\u5c5e\u6027<br>\u7403\u5458\u6bd4\u8d5b\u5173\u7cfb player_game \u8868 &nbsp; &nbsp;\u7403\u5458\u7f16\u53f7\u3001\u6bd4\u8d5b\u7f16\u53f7\u548c\u5f97\u5206\u7b49\u5c5e\u6027<\/p>\n\n\n\n<p>\u8fd9\u6837\u7684\u8bdd\uff0c\u6bcf\u5f20\u6570\u636e\u8868\u90fd\u7b26\u5408\u7b2c\u4e8c\u8303\u5f0f\uff0c\u4e5f\u5c31\u907f\u514d\u4e86\u5f02\u5e38\u60c5\u51b5\u7684\u53d1\u751f\u3002<\/p>\n\n\n\n<p>1NF \u544a\u8bc9\u6211\u4eec\u5b57\u6bb5\u5c5e\u6027\u9700\u8981\u662f\u539f\u5b50\u6027\u7684\uff0c\u800c 2NF \u544a\u8bc9\u6211\u4eec\u4e00\u5f20\u8868\u5c31\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u5bf9\u8c61\uff0c\u4e00\u5f20\u8868\u53ea\u8868\u8fbe\u4e00\u4e2a\u610f\u601d\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>&nbsp;&nbsp;\u5c0f\u7ed3\uff1a\u7b2c\u4e8c\u8303\u5f0f\uff082NF\uff09\u8981\u6c42\u5b9e\u4f53\u7684\u5c5e\u6027\u5b8c\u5168\u4f9d\u8d56\u4e3b\u5173\u952e\u5b57\u3002\u5982\u679c\u5b58\u5728\u4e0d\u5b8c\u5168\u4f9d\u8d56\uff0c\u90a3\u4e48\u8fd9\u4e2a\u5c5e\u6027\u548c\u4e3b\u5173\u952e\u5b57\u7684\u8fd9\u4e00\u90e8\u5206\u5e94\u8be5\u5206\u79bb\u51fa\u6765\u5f62\u6210\u4e00\u4e2a\u65b0\u7684\u5b9e\u4f53\uff0c\u65b0\u5b9e\u4f53\u4e0e\u5143\u5b9e\u4f53\u4e4b\u95f4\u662f\u4e00\u5bf9\u591a\u7684\u5173\u7cfb\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.6\u7b2c\u4e09\u8303\u5f0f\uff083rd NF\uff09<\/h3>\n\n\n\n<p>\u7b2c\u4e09\u8303\u5f0f\u662f\u5728\u7b2c\u4e8c\u8303\u5f0f\u7684\u57fa\u7840\u4e0a\uff0c<strong>\u786e\u4fdd\u6570\u636e\u8868\u4e2d\u7684\u6bcf\u4e00\u4e2a\u975e\u4e3b\u952e\u5b57\u6bb5\u90fd\u548c\u4e3b\u952e\u5b57\u6bb5\u76f4\u63a5\u76f8\u5173\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u8981\u6c42\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u975e\u4e3b\u952e\u5b57\u6bb5\u4e0d\u80fd\u4f9d\u8d56\u4e8e\u5176\u4ed6\u975e\u4e3b\u952e\u5b57\u6bb5\u3002<\/strong>\uff08\u5373\uff0c\u4e0d\u80fd\u5b58\u5728\u975e\u4e3b\u5c5e\u6027A\u4f9d\u8d56\u4e8e\u975e\u4e3b\u5c5e\u6027B\uff0c\u975e\u4e3b\u5c5e\u6027B\u4f9d\u8d56\u4e8e\u4e3b\u952eC\u7684\u60c5\u51b5\uff0c\u5373\u5b58\u5728\u201cA\u4e00B\u4e00C\"\u7684\u51b3\u5b9a\u5173\u7cfb\uff09\u901a\u4fd7\u5730\u8bb2\uff0c\u8be5\u89c4\u5219\u7684\u610f\u601d\u662f\u6240\u6709\u975e\u4e3b\u952e\u5c5e\u6027\u4e4b\u95f4\u4e0d\u80fd\u6709\u4f9d\u8d56\u5173\u7cfb\uff0c\u5fc5\u987b\u76f8\u4e92\u72ec\u7acb\u3002<\/p>\n\n\n\n<p>\u7403\u5458player\u8868\uff1a\u7403\u5458\u7f16\u53f7\u3001\u59d3\u540d\u3001\u7403\u961f\u540d\u79f0\u548c\u7403\u961f\u4e3b\u6559\u7ec3\u3002\u73b0\u5728\uff0c\u6211\u4eec\u628a\u5c5e\u6027\u4e4b\u95f4\u7684\u4f9d\u8d56\u5173\u7cfb\u753b\u51fa\u6765\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<img loading=\"lazy\" decoding=\"async\" height=\"438\" width=\"683\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/f521191f8707443092b6c99358c8752b.png\" alt=\"\"><\/p>\n\n\n\n<p>\u4e8c\u8303\u5f0f\u548c\u4e09\u8303\u5f0f\u6709\u76f8\u4f3c\u6027\u3002\u533a\u5206\u8d77\u6765\u7684\u65f6\u5019\u6309\u4e3b\u5c5e\u6027\u4fa7\u91cd\u548c\u975e\u4e3b\u5c5e\u6027\u4fa7\u91cd\u6765\u533a\u5206\u5c31\u597d\u4e86<\/p>\n\n\n\n<p>&nbsp;\u7b26\u54083NF\u540e\u7684\u6570\u636e\u6a21\u578b\u901a\u4fd7\u5730\u8bb2\uff0c2NF\u548c3NF\u901a\u5e38\u4ee5\u8fd9\u53e5\u8bdd\u6982\u62ec\uff1a\u201c\u6bcf\u4e2a\u975e\u952e\u5c5e\u6027\u4f9d\u8d56\u4e8e\u952e\uff0c\u4f9d\u8d56\u4e8e\u6574\u4e2a\u952e\uff0c\u5e76\u4e14\u9664\u4e86\u952e\u522b\u65e0\u4ed6\u7269\u201d\u3002\u603b\u7ed3\u4e00\u4e0b:\u4e00\u8303\u5f0f\u7684\u8bdd\u8981\u6c42\u5217\u4e0d\u53ef\u518d\u5206\uff0c\u4e8c\u8303\u5f0f\u8981\u6c42\u4e0d\u80fd\u90e8\u5206\u4f9d\u8d56\uff0c\u4e09\u8303\u5f0f\u8981\u6c42\u4e0d\u80fd\u4f9d\u8d56\u4f20\u9012\uff0c\u800c\u662f\u76f4\u63a5\u4f9d\u8d56<\/p>\n\n\n\n<p>\u8303\u5f0f\u7684\u4f18\u70b9\uff1a\u6570\u636e\u7684\u6807\u51c6\u5316\u6709\u52a9\u4e8e\u6d88\u9664\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u4f59\uff0c\u7b2c\u4e09\u8303\u5f0f\uff083NF\uff09\u901a\u5e38\u88ab\u8ba4\u4e3a\u5728\u6027\u80fd\u3001\u6269\u5c55\u6027\u548c\u6570\u636e\u5b8c\u6574\u6027\u65b9\u9762\u8fbe\u5230\u4e86\u6700\u597d\u7684\u5e73\u8861\u3002<\/p>\n\n\n\n<p>\u8303\u5f0f\u7684\u7f3a\u70b9\uff1a\u8303\u5f0f\u7684\u4f7f\u7528\uff0c\u53ef\u80fd\u964d\u4f4e\u67e5\u8be2\u7684\u6548\u7387\u3002\u56e0\u4e3a\u8303\u5f0f\u7b49\u7ea7\u8d8a\u9ad8\uff0c\u8bbe\u8ba1\u51fa\u6765\u7684\u6570\u636e\u8868\u5c31\u8d8a\u591a\u3001\u8d8a\u7cbe\u7ec6\uff0c\u6570\u636e\u7684\u5197\u4f59\u5ea6\u5c31\u8d8a\u4f4e\uff0c\u8fdb\u884c\u6570\u636e\u67e5\u8be2\u7684\u65f6\u5019\u5c31\u53ef\u80fd\u9700\u8981\u5173\u8054\u591a\u5f20\u8868\uff0c\u8fd9\u4e0d\u4f46\u4ee3\u4ef7\u6602\u8d35\uff0c\u4e5f\u53ef\u80fd\u4f7f\u4e00\u4e9b\u7d22\u5f15\u7b56\u7565\u65e0\u6548\u3002<\/p>\n\n\n\n<p>\u8303\u5f0f\u53ea\u662f\u63d0\u51fa\u4e86\u8bbe\u8ba1\u7684\u6807\u51c6\uff0c\u5b9e\u9645\u4e0a\u8bbe\u8ba1\u6570\u636e\u8868\u65f6\uff0c\u672a\u5fc5\u4e00\u5b9a\u8981\u7b26\u5408\u8fd9\u4e9b\u6807\u51c6\u3002\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u4f1a\u51fa\u73b0\u4e3a\u4e86\u6027\u80fd\u548c\u8bfb\u53d6\u6548\u7387\u8fdd\u53cd\u8303\u5f0f\u5316\u7684\u539f\u5219\uff0c\u901a\u8fc7\u589e\u52a0\u5c11\u91cf\u7684\u4f59\u6216\u91cd\u590d\u7684\u6570\u636e\u6765\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u8bfb\u6027\u80fd\uff0c\u51cf\u5c11\u5173\u8054\u67e5\u8be2\uff0cjoin\u8868\u7684\u6b21\u6570\uff0c\u5b9e\u73b0\u7a7a\u95f4\u6362\u53d6\u65f6\u95f4\u7684\u76ee\u7684\u3002\u56e0\u6b64\u5728\u5b9e\u9645\u7684\u8bbe\u8ba1\u8fc7\u7a0b\u4e2d\u8981\u7406\u8bba\u7ed3\u5408\u5b9e\u9645\uff0c\u7075\u6d3b\u8fd0\u7528\u3002<br>\u6ca1\u6709\u5b8c\u7f8e\u7684\u8bbe\u8ba1\uff0c\u53ea\u6709\u5408\u9002\u7684\u8bbe\u8ba1\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">&nbsp;3. \u53cd\u8303\u5f0f\u5316<\/h2>\n\n\n\n<p>\u5982\u679c\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u91cf\u6bd4\u8f83\u5927\uff0c\u7cfb\u7edf\u7684UV\u548cPV\u8bbf\u95ee\u9891\u6b21\u6bd4\u8f83\u9ad8\uff0c\u5219\u5b8c\u5168\u6309\u7167MySQL\u7684\u4e09\u5927\u8303\u5f0f\u8bbe\u8ba1\u6570\u636e\u8868\uff0c\u8bfb\u6570\u636e\u65f6\u4f1a\u4ea7\u751f\u5927\u91cf\u7684\u5173\u8054\u67e5\u8be2\uff0c\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u4f1a\u5f71\u54cd\u6570\u636e\u5e93\u7684\u8bfb\u6027\u80fd\u3002\u5982\u679c\u6211\u4eec\u60f3\u5bf9\u67e5\u8be2\u6548\u7387\u8fdb\u884c\u4f18\u5316\uff0c\u53cd\u8303\u5f0f\u4f18\u5316\u4e5f\u662f\u4e00\u79cd\u4f18\u5316\u601d\u8def\u3002\u6b64\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u5728\u6570\u636e\u8868\u4e2d\u589e\u52a0\u4f59\u5b57\u6bb5\u6765\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u8bfb\u6027\u80fd\u3002&nbsp;<\/p>\n\n\n\n<p><strong>\u4e3e\u4f8b1\uff1a<\/strong> \u5458\u5de5\u7684\u4fe1\u606f\u5b58\u50a8\u5728 <code>employees<\/code> \u8868\u4e2d\uff0c\u90e8\u95e8\u4fe1\u606f\u5b58\u50a8\u5728 <code>departments<\/code> \u8868\u4e2d\u3002\u901a\u8fc7 <code>employees<\/code> \u8868\u4e2d\u7684 <code>department_id<\/code> \u5b57\u6bb5\u4e0e <code>departments<\/code> \u8868\u5efa\u7acb\u5173\u8054\u5173\u7cfb\u3002\u5982\u679c\u8981\u67e5\u8be2\u4e00\u4e2a\u5458\u5de5\u6240\u5728\u90e8\u95e8\u7684\u540d\u79f0\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select employee_id, department_name\nfrom employees e join departments d\non e.department_id = d.department_id;<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u7ecf\u5e38\u9700\u8981\u8fdb\u884c\u8fd9\u4e2a\u64cd\u4f5c\uff0c\u8fde\u63a5\u67e5\u8be2\u5c31\u4f1a\u6d6a\u8d39\u5f88\u591a\u65f6\u95f4\u3002\u53ef\u4ee5\u5728 <code>employees<\/code> \u8868\u4e2d\u589e\u52a0\u4e00\u4e2a\u5197\u4f59\u5b57\u6bb5 <code>department_name<\/code>\uff0c\u8fd9\u6837\u5c31\u4e0d\u7528\u6bcf\u6b21\u90fd\u8fdb\u884c\u8fde\u63a5\u64cd\u4f5c\u4e86\u3002<\/p>\n\n\n\n<p><strong>\u4e3e\u4f8b2\uff1a<\/strong> \u53cd\u8303\u5f0f\u5316\u7684 <code>goods<\/code> \u5546\u54c1\u4fe1\u606f\u8868\u8bbe\u8ba1\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5b57\u6bb5\u540d\u79f0<\/th><th>\u5b57\u6bb5\u7c7b\u578b<\/th><th>\u662f\u5426\u662f\u4e3b\u952e<\/th><th>\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td>id<\/td><td>INT<\/td><td>\u662f<\/td><td>\u5546\u54c1id\uff08\u4e3b\u952e\uff09<\/td><\/tr><tr><td>category_id<\/td><td>VARCHAR(30)A<\/td><td>\u5426<\/td><td>\u5546\u54c1\u7c7b\u522bid<\/td><\/tr><tr><td>category_name<\/td><td>VARCHAR(30)<\/td><td>\u5426<\/td><td>\u5546\u54c1\u7c7b\u522b\u540d\u79f0<\/td><\/tr><tr><td>goods_name<\/td><td>VARCHAR(30)<\/td><td>\u5426<\/td><td>\u5546\u54c1\u540d\u79f0<\/td><\/tr><tr><td>price<\/td><td>DECIMAL(10,2)<\/td><td>\u5426<\/td><td>\u5546\u54c1\u4ef7\u683c<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>#07-\u6570\u636e\u8868\u7684\u8bbe\u8ba1\u89c4\u8303\n\n#\u53cd\u8303\u5f0f\u5316\u7684\u4e3e\u4f8b\uff1a\n\nCREATE DATABASE atguigudb3;\n\nUSE atguigudb3;\n\n#\u5b66\u751f\u8868\nCREATE TABLE student(\nstu_id INT PRIMARY KEY AUTO_INCREMENT,\nstu_name VARCHAR(25),\ncreate_time DATETIME\n);\n\n#\u8bfe\u7a0b\u8bc4\u8bba\u8868\nCREATE TABLE class_comment(\ncomment_id INT PRIMARY KEY AUTO_INCREMENT,\nclass_id INT,\ncomment_text VARCHAR(35),\ncomment_time DATETIME,\nstu_id INT\n);\n\n###\u521b\u5efa\u5411\u5b66\u751f\u8868\u4e2d\u6dfb\u52a0\u6570\u636e\u7684\u5b58\u50a8\u8fc7\u7a0b\nDELIMITER \/\/\n\nCREATE PROCEDURE batch_insert_student(IN START INT(10), IN max_num INT(10))\nBEGIN\nDECLARE i INT DEFAULT 0;\nDECLARE date_start DATETIME DEFAULT ('2017-01-01 00:00:00');\nDECLARE date_temp DATETIME;\nSET date_temp = date_start;\nSET autocommit=0;\nREPEAT\nSET i=i+1;\nSET date_temp = DATE_ADD(date_temp, INTERVAL RAND()*60 SECOND);\nINSERT INTO student(stu_id, stu_name, create_time)\nVALUES((START+i), CONCAT('stu_',i), date_temp);\nUNTIL i = max_num\nEND REPEAT;\nCOMMIT;\nEND \/\/\n\nDELIMITER ;\n\n#\u8c03\u7528\u5b58\u50a8\u8fc7\u7a0b\uff0c\u5b66\u751fid\u4ece10001\u5f00\u59cb\uff0c\u6dfb\u52a01000000\u6570\u636e\nCALL batch_insert_student(10000,1000000);\n\n####\u521b\u5efa\u5411\u8bfe\u7a0b\u8bc4\u8bba\u8868\u4e2d\u6dfb\u52a0\u6570\u636e\u7684\u5b58\u50a8\u8fc7\u7a0b\nDELIMITER \/\/\n\nCREATE PROCEDURE batch_insert_class_comments(IN START INT(10), IN max_num INT(10))\nBEGIN\nDECLARE i INT DEFAULT 0;\nDECLARE date_start DATETIME DEFAULT ('2018-01-01 00:00:00');\nDECLARE date_temp DATETIME;\nDECLARE comment_text VARCHAR(25);\nDECLARE stu_id INT;\nSET date_temp = date_start;\nSET autocommit=0;\nREPEAT\nSET i=i+1;\nSET date_temp = DATE_ADD(date_temp, INTERVAL RAND()*60 SECOND);\nSET comment_text = SUBSTR(MD5(RAND()),1, 20);\nSET stu_id = FLOOR(RAND()*1000000);\nINSERT INTO class_comment(comment_id, class_id, comment_text, comment_time, stu_id)\nVALUES((START+i), 10001, comment_text, date_temp, stu_id);\nUNTIL i = max_num\nEND REPEAT;\nCOMMIT;\nEND \/\/\n\nDELIMITER ;\n\n#\u6dfb\u52a0\u6570\u636e\u7684\u5b58\u50a8\u8fc7\u7a0b\u7684\u8c03\u7528\uff0c\u4e00\u51711000000\u6761\u8bb0\u5f55\nCALL batch_insert_class_comments(10000,1000000);\n\n#########\nSELECT COUNT(*) FROM student;\n\nSELECT COUNT(*) FROM class_comment;\n\n###\u9700\u6c42######\nSELECT p.comment_text, p.comment_time, stu.stu_name \nFROM class_comment AS p LEFT JOIN student AS stu \nON p.stu_id = stu.stu_id \nWHERE p.class_id = 10001 \nORDER BY p.comment_id DESC \nLIMIT 10000;<\/code><\/pre>\n\n\n\n<p>\u8017\u8d390.016s<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#####\u8fdb\u884c\u53cd\u8303\u5f0f\u5316\u7684\u8bbe\u8ba1######\n#\u8868\u7684\u590d\u5236\nCREATE TABLE class_comment1\nAS\nSELECT * FROM class_comment;\n\n#\u6dfb\u52a0\u4e3b\u952e\uff0c\u4fdd\u8bc1class_comment1 \u4e0eclass_comment\u7684\u7ed3\u6784\u76f8\u540c\nALTER TABLE class_comment1\nADD PRIMARY KEY (comment_id);\n\nSHOW INDEX FROM class_comment1;\n\n#\u5411\u8bfe\u7a0b\u8bc4\u8bba\u8868\u4e2d\u589e\u52a0stu_name\u5b57\u6bb5\nALTER TABLE class_comment1\nADD stu_name VARCHAR(25);\n\n#\u7ed9\u65b0\u6dfb\u52a0\u7684\u5b57\u6bb5\u8d4b\u503c\nUPDATE class_comment1 c\nSET stu_name = (\nSELECT stu_name\nFROM student s\nWHERE c.stu_id = s.stu_id\n);\n\n#\u67e5\u8be2\u540c\u6837\u7684\u9700\u6c42\nSELECT comment_text, comment_time, stu_name \nFROM class_comment1 \nWHERE class_id = 10001 \nORDER BY comment_id DESC \nLIMIT 10000;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">&nbsp;3.3\u53cd\u8303\u5f0f\u7684\u65b0\u95ee\u9898<\/h3>\n\n\n\n<p>\u53cd\u8303\u5f0f\u53ef\u4ee5\u901a\u8fc7\u7a7a\u95f4\u6362\u65f6\u95f4\uff0c\u63d0\u5347\u67e5\u8be2\u7684\u6548\u7387\uff0c\u4f46\u662f\u53cd\u8303\u5f0f\u4e5f\u4f1a\u5e26\u6765\u4e00\u4e9b\u65b0\u95ee\u9898\uff1a<br>\u00b7\u5b58\u50a8\u7a7a\u95f4\u53d8\u5927\u4e86<br>\u00b7\u4e00\u4e2a\u8868\u4e2d\u5b57\u6bb5\u505a\u4e86\u4fee\u6539\uff0c\u53e6\u4e00\u4e2a\u8868\u4e2d\u5197\u4f59\u7684\u5b57\u6bb5\u4e5f\u9700\u8981\u505a\u540c\u6b65\u4fee\u6539\uff0c\u5426\u5219\u6570\u636e\u4e0d\u4e00\u81f4<br>\u00b7\u82e5\u91c7\u7528\u5b58\u50a8\u8fc7\u7a0b\u6765\u652f\u6301\u6570\u636e\u7684\u66f4\u65b0\u3001\u5220\u9664\u7b49\u989d\u5916\u64cd\u4f5c\uff0c\u5982\u679c\u66f4\u65b0\u9891\u7e41\uff0c\u4f1a\u975e\u5e38\u6d88\u8017\u7cfb\u7edf\u8d44\u6e90<br>\u00b7\u5728\u6570\u636e\u91cf\u5c0f\u7684\u60c5\u51b5\u4e0b\uff0c\u53cd\u8303\u5f0f\u4e0d\u80fd\u4f53\u73b0\u6027\u80fd\u7684\u4f18\u52bf\uff0c\u53ef\u80fd\u8fd8\u4f1a\u8ba9\u6570\u636e\u5e93\u7684\u8bbe\u8ba1\u66f4\u52a0\u590d\u6742<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.4\u53cd\u8303\u5f0f\u7684\u9002\u7528\u573a\u666f<\/h3>\n\n\n\n<p>\u5f53\u5197\u4f59\u4fe1\u606f\u6709\u4ef7\u503c\u6216\u8005\u80fd\u5927\u5e45\u5ea6\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u7684\u65f6\u5019\uff0c\u6211\u4eec\u624d\u4f1a\u91c7\u53d6\u53cd\u8303\u5f0f\u7684\u4f18\u5316\u3002<\/p>\n\n\n\n<p>&nbsp;\u589e\u52a0\u5197\u4f59\u5b57\u6bb5\u4e00\u5b9a\u8981\u7b26\u5408\u5982\u4e0b\u4e24\u4e2a\u6761\u4ef6\u3002\u53ea\u6709\u6ee1\u8db3\u8fd9\u4e24\u4e2a\u6761\u4ef6\uff0c\u624d\u53ef\u4ee5\u8003\u8651\u589e\u52a0\u5197\u4f59\u5b57\u6bb5\u3002<br>1\uff09\u8fd9\u4e2a\u5197\u4f59\u5b57\u6bb5\u4e0d\u9700\u8981\u7ecf\u5e38\u8fdb\u884c\u4fee\u6539\uff1b<br>2\uff09\u8fd9\u4e2a\u51e0\u4f59\u5b57\u6bb5\u67e5\u8be2\u7684\u65f6\u5019\u4e0d\u53ef\u6216\u7f3a\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2.\u5386\u53f2\u5feb\u7167\u3001\u5386\u53f2\u6570\u636e\u7684\u9700\u8981<\/h4>\n\n\n\n<p>\u5728\u73b0\u5b9e\u751f\u6d3b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u4e00\u4e9b\u5197\u4f59\u4fe1\u606f\uff0c\u6bd4\u5982\u8ba2\u5355\u4e2d\u7684\u6536\u8d27\u4eba\u4fe1\u606f\uff0c\u5305\u62ec\u59d3\u540d\u3001\u7535\u8bdd\u548c\u5730\u5740\u7b49\u3002\u6bcf\u6b21\u53d1\u751f\u7684\u8ba2\u5355\u6536\u8d27\u4fe1\u606f\u90fd\u5c5e\u4e8e\u5386\u53f2\u5feb\u7167\uff0c\u9700\u8981\u8fdb\u884c\u4fdd\u5b58\uff0c\u4f46\u7528\u6237\u53ef\u4ee5\u968f\u65f6\u4fee\u6539\u81ea\u5df1\u7684\u4fe1\u606f\uff0c\u8fd9\u65f6\u4fdd\u5b58\u8fd9\u4e9b\u4f59\u4fe1\u606f\u662f\u975e\u5e38\u6709\u5fc5\u8981\u7684\u3002<br>\u53cd\u8303\u5f0f\u4f18\u5316\u4e5f\u5e38\u7528\u5728\u6570\u636e\u4ed3\u5e93\u7684\u8bbe\u8ba1\u4e2d\uff0c\u56e0\u4e3a\u6570\u636e\u4ed3\u5e93\u901a\u5e38\u5b58\u50a8\u5386\u53f2\u6570\u636e\uff0c\u5bf9\u589e\u5220\u6539\u7684\u5b9e\u65f6\u6027\u8981\u6c42\u4e0d\u5f3a\uff0c\u5bf9\u5386\u53f2\u6570\u636e\u7684\u5206\u6790\u9700\u6c42\u5f3a\u3002\u8fd9\u65f6\u9002\u5f53\u5141\u8bb8\u6570\u636e\u7684\u5197\u4f59\u5ea6\uff0c\u66f4\u65b9\u4fbf\u8fdb\u884c\u6570\u636e\u5206\u6790\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">&nbsp;4.BCNF\uff08\u5df4\u65af\u8303\u5f0f\uff09<\/h2>\n\n\n\n<p>\u4eba\u4eec\u57283NF\u7684\u57fa\u7840\u4e0a\u8fdb\u884c\u4e86\u6539\u8fdb\uff0c\u63d0\u51fa\u4e86\u5df4\u65af\u8303\u5f0f\uff08BCNF\uff09\uff0c\u4e5f\u53eb\u505a\u5df4\u65af-\u79d1\u5fb7\u8303\u5f0f\uff08Boyce-CoddNormal Form\uff09\u3002BCNF\u88ab\u8ba4\u4e3a\u6ca1\u6709\u65b0\u7684\u8bbe\u8ba1\u89c4\u8303\u52a0\u5165\uff0c\u53ea\u662f\u5bf9\u7b2c\u4e09\u8303\u5f0f\u4e2d\u8bbe\u8ba1\u89c4\u8303\u8981\u6c42\u66f4\u5f3a\uff0c\u4f7f\u5f97\u6570\u636e\u5e93\u4f59\u5ea6\u66f4\u5c0f\u3002\u6240\u4ee5\uff0c\u79f0\u4e3a\u662f\u4fee\u6b63\u7684\u7b2c\u4e09\u8303\u5f0f\uff0c\u6216\u6269\u5145\u7684\u7b2c\u4e09\u8303\u5f0f\uff0cBCNF\u4e0d\u88ab\u79f0\u4e3a\u7b2c\u56db\u8303\u5f0f\u3002<br>\u82e5\u4e00\u4e2a\u5173\u7cfb\u8fbe\u5230\u4e86\u7b2c\u4e09\u8303\u5f0f\uff0c\u5e76\u4e14\u5b83\u53ea\u6709\u4e00\u4e2a\u5019\u9009\u952e\uff0c\u6216\u8005\u5b83\u7684\u6bcf\u4e2a\u5019\u9009\u952e\u90fd\u662f\u5355\u5c5e\u6027\uff0c\u5219\u8be5\u5173\u7cfb\u81ea\u7136\u8fbe\u5230BC\u8303\u5f0f\u3002<br>\u4e00\u822c\u6765\u8bf4\uff0c\u4e00\u4e2a\u6570\u636e\u5e93\u8bbe\u8ba1\u7b26\u54083NF\u6216BCNF\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n\n\n\n<p>1.\u6848\u4f8b&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; \u6211\u4eec\u5206\u6790\u5982\u4e0b\u8868\u7684\u8303\u5f0f\u60c5\u51b5\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u4ed3\u5e93\u540d<\/th><th>\u7ba1\u7406\u5458<\/th><th>\u7269\u54c1\u540d<\/th><th>\u6570\u91cf<\/th><\/tr><\/thead><tbody><tr><td>\u5317\u4eac\u4ed3<\/td><td>\u5f20\u4e09<\/td><td>iphone XR<\/td><td>10<\/td><\/tr><tr><td>\u5317\u4eac\u4ed3<\/td><td>\u5f20\u4e09<\/td><td>iphone 7<\/td><td>20<\/td><\/tr><tr><td>\u4e0a\u6d77\u4ed3<\/td><td>\u674e\u56db<\/td><td>iphone 7p<\/td><td>30<\/td><\/tr><tr><td>\u4e0a\u6d77\u4ed3<\/td><td>\u674e\u56db<\/td><td>iphone 8<\/td><td>40<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u5728\u8fd9\u4e2a\u8868\u4e2d\uff0c\u4e00\u4e2a\u4ed3\u5e93\u53ea\u6709\u4e00\u4e2a\u7ba1\u7406\u5458\uff0c\u540c\u65f6\u4e00\u4e2a\u7ba1\u7406\u5458\u4e5f\u53ea\u7ba1\u7406\u4e00\u4e2a\u4ed3\u5e93\u3002\u6211\u4eec\u5148\u6765\u68b3\u7406\u4e0b\u8fd9\u4e9b\u5c5e\u6027\u4e4b\u95f4\u7684\u4f9d\u8d56\u5173\u7cfb\u3002<\/p>\n\n\n\n<p>\u4ed3\u5e93\u540d\u51b3\u5b9a\u4e86\u7ba1\u7406\u5458\uff0c\u7ba1\u7406\u5458\u4e5f\u51b3\u5b9a\u4e86\u4ed3\u5e93\u540d\uff0c\u540c\u65f6\uff08\u4ed3\u5e93\u540d\uff0c\u7269\u54c1\u540d\uff09\u7684\u5c5e\u6027\u96c6\u5408\u53ef\u4ee5\u51b3\u5b9a\u6570\u91cf\u8fd9\u4e2a\u5c5e\u6027\u3002\u8fd9\u6837\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u627e\u5230\u6570\u636e\u8868\u7684\u5019\u9009\u952e\u3002<\/p>\n\n\n\n<p>\u5019\u9009\u952e\uff1a\u662f\uff08\u7ba1\u7406\u5458\uff0c\u7269\u54c1\u540d\uff09\u548c\uff08\u4ed3\u5e93\u540d\uff0c\u7269\u54c1\u540d\uff09\uff0c\u7136\u540e\u6211\u4eec\u4ece\u5019\u9009\u952e\u4e2d\u9009\u62e9\u4e00\u4e2a\u4f5c\u4e3a\u4e3b\u952e\uff0c\u6bd4\u5982\uff08\u4ed3\u5e93\u540d\uff0c\u7269\u54c1\u540d\uff09\u3002<\/p>\n\n\n\n<p>\u4e3b\u5c5e\u6027\uff1a\u5305\u542b\u5728\u4efb\u4e00\u5019\u9009\u952e\u4e2d\u7684\u5c5e\u6027\uff0c\u4e5f\u5c31\u662f\u4ed3\u5e93\u540d\uff0c\u7ba1\u7406\u5458\u548c\u7269\u54c1\u540d\u3002<\/p>\n\n\n\n<p>\u975e\u4e3b\u5c5e\u6027\uff1a\u6570\u91cf\u8fd9\u4e2a\u5c5e\u6027\u3002<\/p>\n\n\n\n<p>2. \u662f\u5426\u7b26\u5408\u4e09\u8303\u5f0f\uff1f\uff1f\uff1f&nbsp; \u662f\u7b26\u5408\u7684<\/p>\n\n\n\n<p>3.\u5b58\u5728\u7684\u95ee\u9898<\/p>\n\n\n\n<p>\u65e2\u7136\u6570\u636e\u8868\u5df2\u7ecf\u7b26\u5408\u4e86 3NF \u7684\u8981\u6c42\uff0c\u662f\u4e0d\u662f\u5c31\u4e0d\u5b58\u5728\u95ee\u9898\u4e86\u5462\uff1f\u6211\u4eec\u6765\u770b\u4e0b\u9762\u7684\u60c5\u51b5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u589e\u52a0\u4e00\u4e2a\u4ed3\u5e93\uff0c\u4f46\u662f\u8fd8\u6ca1\u6709\u5b58\u653e\u4efb\u4f55\u7269\u54c1\u3002\u6839\u636e\u6570\u636e\u8868\u5b9e\u4f53\u5b8c\u6574\u6027\u7684\u8981\u6c42\uff0c\u4e3b\u952e\u4e0d\u80fd\u6709\u7a7a\u503c\uff0c\u56e0\u6b64\u4f1a\u51fa\u73b0\u63d2\u5165\u5f02\u5e38\uff1b<\/li>\n\n\n\n<li>\u5982\u679c\u4ed3\u5e93\u66f4\u6362\u4e86\u7ba1\u7406\u5458\uff0c\u6211\u4eec\u5c31\u53ef\u80fd\u4f1a\u4fee\u6539\u6570\u636e\u8868\u4e2d\u7684\u591a\u6761\u8bb0\u5f55\uff1b<\/li>\n\n\n\n<li>\u5982\u679c\u4ed3\u5e93\u91cc\u7684\u5546\u54c1\u90fd\u5356\u7a7a\u4e86\uff0c\u90a3\u4e48\u6b64\u65f6\u4ed3\u5e93\u540d\u79f0\u548c\u76f8\u5e94\u7684\u7ba1\u7406\u5458\u540d\u79f0\u4e5f\u4f1a\u968f\u4e4b\u88ab\u5220\u9664\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4f60\u80fd\u770b\u5230\uff0c\u5373\u4fbf\u6570\u636e\u8868\u7b26\u5408 3NF 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loading=\"lazy\" decoding=\"async\" height=\"283\" width=\"681\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/42e6cc2d5b054d26986d9a1572c6a7d1.png\" alt=\"\"><\/p>\n\n\n\n<p>&nbsp;<strong>\u4e3b\u5c5e\u6027\u4e4b\u95f4\u4e0d\u80fd\u5b58\u5728\u4f9d\u8d56\uff0c\u975e\u4e3b\u5c5e\u6027\u4e4b\u95f4\u4e0d\u80fd\u4f9d\u8d56\u3002\u4e3b\u5c5e\u6027\u548c\u975e\u4e3b\u5c5e\u6027\u4e0d\u80fd\u90e8\u4efd\u4f9d\u8d56<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">5.\u7b2c\u56db\u8303\u5f0f\uff08\u770b\u770b\u5c31\u884c<\/h2>\n\n\n\n<p>\u591a\u503c\u4f9d\u8d56\u7684\u6982\u5ff5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u591a\u503c\u4f9d\u8d56 \u5373\u5c5e\u6027\u4e4b\u95f4\u7684\u4e00\u5bf9\u591a\u5173\u7cfb\uff0c\u8bb0\u4e3a K\u2192\u2192A\u3002<\/li>\n\n\n\n<li>\u51fd\u6570\u4f9d\u8d56 \u4e8b\u5b9e\u4e0a\u662f\u5355\u503c\u4f9d\u8d56\uff0c\u6240\u4ee5\u4e0d\u80fd\u8868\u8fbe\u5c5e\u6027\u503c\u4e4b\u95f4\u7684\u4e00\u5bf9\u591a\u5173\u7cfb\u3002<\/li>\n\n\n\n<li>\u5e73\u51e1\u7684\u591a\u503c\u4f9d\u8d56\uff1a\u5168\u96c6 U=K+A\uff0c\u4e00\u4e2a K \u53ef\u4ee5\u5bf9\u5e94\u4e8e\u591a\u4e2a A\uff0c\u5373 K\u2192\u2192A\u3002\u6b64\u65f6\u6574\u4e2a\u8868\u5c31\u662f\u4e00\u7ec4\u4e00\u5bf9\u591a\u5173\u7cfb\u3002<\/li>\n\n\n\n<li>\u975e\u5e73\u51e1\u7684\u591a\u503c\u4f9d\u8d56\uff1a\u5168\u96c6 U=K+A+B\uff0c\u4e00\u4e2a K \u53ef\u4ee5\u5bf9\u5e94\u4e8e\u591a\u4e2a A\uff0c\u4e5f\u53ef\u4ee5\u5bf9\u5e94\u4e8e\u591a\u4e2a B\uff0cA \u4e0e B \u4e92\u76f8\u72ec\u7acb\uff0c\u5373 K\u2192\u2192A\uff0cK\u2192\u2192B\u3002\u6574\u4e2a\u8868\u6709\u591a\u7ec4\u4e00\u5bf9\u591a\u5173\u7cfb\uff0c\u4e14\u6709\uff1a\u201c\u4e00\u90e8\u5206\u662f\u76f8\u540c\u7684\u5c5e\u6027\u96c6\u5408\uff0c\u201c\u591a\u201d\u90e8\u5206\u662f\u4e92\u76f8\u72ec\u7acb\u7684\u5c5e\u6027\u96c6\u5408\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u7b2c\u56db\u8303\u5f0f\u5373\u5728\u6ee1\u8db3\u5df4\u65af-\u79d1\u5fb7\u8303\u5f0f\uff08BCNF\uff09\u7684\u57fa\u7840\u4e0a\uff0c\u6d88\u9664\u975e\u5e73\u51e1\u4e14\u975e\u51fd\u6570\u4f9d\u8d56\u7684\u591a\u503c\u4f9d\u8d56\uff08\u5373\u628a\u540c\u4e00\u8868\u5185\u7684\u591a\u5bf9\u591a\u5173\u7cfb\u5220\u9664\uff09\u3002<\/p>\n\n\n\n<p>\u4e3e\u4f8b1\uff1a\u804c\u5de5\u8868\uff08\u804c\u5de5\u7f16\u53f7\uff0c\u804c\u5de5\u5b69\u5b50\u59d3\u540d\uff0c\u804c\u5de5\u9009\u4fee\u8bfe\u7a0b\uff09\u3002<\/p>\n\n\n\n<p>\u5728\u8fd9\u4e2a\u8868\u4e2d\uff0c\u540c\u4e00\u4e2a\u804c\u5de5\u53ef\u80fd\u4f1a\u6709\u591a\u4e2a\u804c\u5de5\u5b69\u5b50\u59d3\u540d\u3002\u540c\u6837\uff0c\u540c\u4e00\u4e2a\u804c\u5de5\u4e5f\u53ef\u80fd\u4f1a\u6709\u591a\u4e2a\u804c\u5de5\u9009\u4fee\u8bfe\u7a0b\uff0c\u5373\u8fd9\u91cc\u5b58\u5728\u7740\u591a\u503c\u4e8b\u5b9e\uff0c\u4e0d\u7b26\u5408\u7b2c\u56db\u8303\u5f0f\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u8981\u7b26\u5408\u7b2c\u56db\u8303\u5f0f\uff0c\u53ea\u9700\u8981\u5c06\u4e0a\u8868\u5206\u4e3a\u4e24\u4e2a\u8868\uff0c\u4f7f\u5b83\u4eec\u53ea\u6709\u4e00\u4e2a\u591a\u503c\u4e8b\u5b9e\uff0c\u4f8b\u5982\uff1a\u804c\u5de5\u8868\u4e00\uff08\u804c\u5de5\u7f16\u53f7\uff0c\u804c\u5de5\u5b69\u5b50\u59d3\u540d\uff09\uff0c\u804c\u5de5\u8868\u4e8c\uff08\u804c\u5de5\u7f16\u53f7\uff0c\u804c\u5de5\u9009\u4fee\u8bfe\u7a0b\uff09\uff0c\u4e24\u4e2a\u8868\u90fd\u53ea\u6709\u4e00\u4e2a\u591a\u503c\u4e8b\u5b9e\uff0c\u6240\u4ee5\u7b26\u5408\u7b2c\u56db\u8303\u5f0f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6.\u7b2c\u4e94\u8303\u5f0f\uff0c\u57df\u952e\u8303\u5f0f\uff08\u770b\u770b\u5c31\u884c<\/h2>\n\n\n\n<p>\u5728\u6ee1\u8db3\u7b2c\u56db\u8303\u5f0f\uff084NF\uff09\u7684\u57fa\u7840\u4e0a\uff0c\u6d88\u9664\u4e0d\u662f\u7531\u5019\u9009\u952e\u6240\u8574\u542b\u7684\u8fde\u63a5\u4f9d\u8d56\u3002\u5982\u679c\u5173\u7cfb\u6a21\u5f0fR\u4e2d\u7684\u6bcf\u4e00\u4e2a\u8fde\u63a5\u4f9d\u8d56\u5747\u7531R\u7684\u5019\u9009\u952e\u6240\u9690\u542b\uff0c\u5219\u79f0\u6b64\u5173\u7cfb\u6a21\u5f0f\u7b26\u5408\u7b2c\u4e94\u8303\u5f0f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7.\u5b9e\u6218\u6848\u4f8b&nbsp;<\/h2>\n\n\n\n<p><strong>\u8fdb\u8d27\u5355\u8868\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>listnumber (\u5355\u53f7)<\/th><th>supplierid (\u4f9b\u5e94\u5546\u7f16\u53f7)<\/th><th>suppliername (\u4f9b\u5e94\u5546\u540d\u79f0)<\/th><th>stock (\u4ed3\u5e93)<\/th><th>barcode (\u6761\u7801)<\/th><th>goodsname (\u540d\u79f0)<\/th><th>property (\u5c5e\u6027)<\/th><th>quantity (\u6570\u91cf)<\/th><th>importprice (\u8fdb\u8d27\u4ef7\u683c)<\/th><th>importvalue (\u8fdb\u8d27\u91d1\u989d)<\/th><\/tr><\/thead><tbody><tr><td>100001<\/td><td>1<\/td><td>\u98df\u54c1\u5382<\/td><td>\u4ed3\u5e93<\/td><td>0001<\/td><td>\u65b9\u4fbf\u9762<\/td><td>6\u5305\/\u888b<\/td><td>200<\/td><td>25<\/td><td>5000<\/td><\/tr><tr><td>100001<\/td><td>1<\/td><td>\u98df\u54c1\u5382<\/td><td>\u4ed3\u5e93<\/td><td>0002<\/td><td>\u68d2\u68d2\u7cd6<\/td><td>10\u652f\/\u76d2<\/td><td>400<\/td><td>9.9<\/td><td>3960<\/td><\/tr><tr><td>100002<\/td><td>2<\/td><td>\u670d\u88c5\u5382<\/td><td>\u5356\u573a<\/td><td>0003<\/td><td>\u897f\u670d<\/td><td>\u5957<\/td><td>5<\/td><td>2000<\/td><td>10000<\/td><\/tr><tr><td>100003<\/td><td>1<\/td><td>\u98df\u54c1\u5382<\/td><td>\u5356\u573a<\/td><td>0002<\/td><td>\u68d2\u68d2\u7cd6<\/td><td>10\u652f\/\u76d2<\/td><td>200<\/td><td>15<\/td><td>3000<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u8fd9\u4e2a\u8868\u4e2d\u7684\u5b57\u6bb5\u5f88\u591a\uff0c\u8868\u91cc\u7684\u6570\u636e\u91cf\u4e5f\u5f88\u60ca\u4eba\u3002\u5927\u91cf\u91cd\u590d\u5bfc\u81f4\u8868\u53d8\u5f97\u5e9e\u5927\uff0c\u6548\u7387\u6781\u4f4e\u3002\u5982\u4f55\u6539\u9020\uff1f<\/p>\n\n\n\n<p>\u5728\u5b9e\u9645\u5de5\u4f5c\u573a\u666f\u4e2d\uff0c\u8fd9\u79cd\u7531\u4e8e\u6570\u636e\u8868\u7ed3\u6784\u8bbe\u8ba1\u4e0d\u5408\u7406\uff0c\u800c\u5bfc\u81f4\u7684\u6570\u636e\u91cd\u590d\u7684\u73b0\u8c61\u5e76\u4e0d\u5c11\u89c1\u3002\u5f80\u5f80\u662f\u7cfb\u7edf\u867d\u7136\u80fd\u591f\u8fd0\u884c\uff0c\u627f\u8f7d\u80fd\u529b\u5374\u5f88\u5dee\uff0c\u7a0d\u5fae\u6709\u70b9\u6d41\u91cf\uff0c\u5c31\u4f1a\u51fa\u73b0\u5185\u5b58\u4e0d\u8db3\u3001CPU \u4f7f\u7528\u7387\u98d9\u5347\u7684\u60c5\u51b5\uff0c\u751a\u81f3\u4f1a\u5bfc\u81f4\u6574\u4e2a\u9879\u76ee\u5931\u8d25\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7.1 \u8fed\u4ee31\u6b21\uff1a\u8003\u86511NF<\/h3>\n\n\n\n<p>\u7b2c\u4e00\u8303\u5f0f\u8981\u6c42\uff1a\u6240\u6709\u7684\u5b57\u6bb5\u90fd\u662f\u57fa\u672c\u6570\u636e\u5b57\u6bb5\uff0c\u4e0d\u53ef\u8fdb\u4e00\u6b65\u62c6\u5206\u3002\u8fd9\u91cc\u9700\u8981\u786e\u8ba4\uff0c\u6240\u6709\u7684\u5217\u4e2d\uff0c\u6bcf\u4e2a\u5b57\u6bb5\u53ea\u5305\u542b\u4e00\u79cd\u6570\u636e\u3002<\/p>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" height=\"192\" width=\"679\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/a12c52b3015d417187f78baec654df1c.png\" alt=\"\"><img loading=\"lazy\" decoding=\"async\" height=\"15\" width=\"15\" src=\"blob:https:\/\/eve2333.top\/20f48aa6-07de-42d0-81ee-390432b07883\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7.2 \u8fed\u4ee32\u6b21\uff1a\u8003\u86512NF<\/h3>\n\n\n\n<p>\u7b2c\u4e8c\u8303\u5f0f\u8981\u6c42\uff0c\u5728\u6ee1\u8db3\u7b2c\u4e00\u8303\u5f0f\u7684\u57fa\u7840\u4e0a\uff0c\u8fd8\u8981\u6ee1\u8db3\u6570\u636e\u8868\u91cc\u7684\u6bcf\u4e00\u6761\u6570\u636e\u8bb0\u5f55\uff0c\u90fd\u662f\u53ef\u552f\u4e00\u6807\u8bc6\u7684\u3002\u800c\u4e14\u6240\u6709\u5b57\u6bb5\uff0c\u90fd\u5fc5\u987b\u5b8c\u5168\u4f9d\u8d56\u4e3b\u952e\uff0c\u4e0d\u80fd\u53ea\u4f9d\u8d56\u4e3b\u952e\u7684\u4e00\u90e8\u5206\u3002<\/p>\n\n\n\n<p>\u786e\u5b9a\u8fd9\u4e2a\u8868\u7684\u4e3b\u952e\u3002\u901a\u8fc7\u89c2\u5bdf\u53d1\u73b0\uff0c\u5b57\u6bb5\"listnumber\uff08\u5355\u53f7)+\"barcode\uff08\u6761\u7801\uff09\"\u53ef\u4ee5\u552f\u4e00\u6807\u8bc6\u6bcf\u4e00\u6761\u8bb0\u5f55\uff0c\u53ef\u4ee5\u4f5c\u4e3a\u4e3b\u952e\u3002<\/p>\n\n\n\n<p>\u539f\u6765\u7684\u6570\u636e\u8868\u5c31\u62c6\u5206\u6210\u4e863\u4e2a\u8868\u3002<br>\u8fdb\u8d27\u5355\u5934\u8868\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>listnumber<\/td><td>supplierid<\/td><td>suppliername<\/td><td>stock<\/td><\/tr><tr><td>100001<\/td><td>1<\/td><td>\u98df\u54c1\u5382<\/td><td>\u4ed3\u5e93<\/td><\/tr><tr><td>100002<\/td><td>2<\/td><td>\u670d\u88c5\u5382<\/td><td>\u5356\u573a<\/td><\/tr><tr><td>100003<\/td><td>1<\/td><td>\u98df\u54c1\u5382<\/td><td>\u5356\u573a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u8fdb\u8d27\u5355\u660e\u7ec6\u8868\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>listnumber<\/th><th>barcode<\/th><th>quantity<\/th><th>importprice<\/th><th>importvalue<\/th><\/tr><\/thead><tbody><tr><td>100001<\/td><td>0001<\/td><td>200<\/td><td>25<\/td><td>5000<\/td><\/tr><tr><td>100001<\/td><td>0002<\/td><td>400<\/td><td>9.9<\/td><td>3960<\/td><\/tr><tr><td>100002<\/td><td>0003<\/td><td>5<\/td><td>2000<\/td><td>10000<\/td><\/tr><tr><td>100003<\/td><td>0002<\/td><td>200<\/td><td>15<\/td><td>3000<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u5546\u54c1\u4fe1\u606f\u8868\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>barcode<\/th><th>goodsname<\/th><th>specification<\/th><th>unit<\/th><\/tr><\/thead><tbody><tr><td>0001<\/td><td>\u65b9\u4fbf\u9762<\/td><td>6\u5305<\/td><td>\u888b<\/td><\/tr><tr><td>0002<\/td><td>\u68d2\u68d2\u7cd6<\/td><td>10\u652f<\/td><td>\u76d2<\/td><\/tr><tr><td>0003<\/td><td>\u897f\u670d<\/td><td>NULL<\/td><td>\u5957<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>&nbsp;\u6bd4\u5982\u5546\u54c1\u4fe1\u606f\u8868\u4e2d\u7684\u201c\u68d2\u68d2\u7cd6\u201d\u53ef\u80fd\u91cd\u590d\uff0c\u6bd4\u5982\u8fd9\u91cc\u662f\u76d2\u5b50\uff0c\u4f46\u662f\u5b9e\u9645\u4e0a\u53ef\u80fd\u6563\u88c5\u8bba\u65a4\u5356\u6761\u7801\u5171\u7528\uff0c\u54c1\uff0c\u4f1a\u5b58\u5728\u6761\u7801\u5171\u7528\u7684\u60c5\u51b5\u3002\u6240\u4ee5\uff0c\u6240\u6709\u7684\u5b57\u6bb5\u90fd\u4e0d\u80fd\u552f\u4e00\u6807\u8bc6\u8868\u91cc\u7684\u8bb0\u5f55\u3002\u8fd9\u4e2a\u65f6\u5019\uff0c\u6211\u4eec\u5fc5\u987b\u7ed9\u8fd9\u4e2a\u8868\u52a0\u4e0a\u4e00\u4e2a\u4e3b\u952e\uff0c\u6bd4\u5982\u8bf4\u662f\u81ea\u589e\u5b57\u6bb5\u201citemnumber\u201d<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7.3 \u8fed\u4ee3\u4e09\u6b21\uff1a\u8003\u86513NF<\/h3>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" height=\"132\" width=\"197\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/1d3d08cb52e94da8b833f7b10a0d4366.png\" alt=\"\"><img loading=\"lazy\" decoding=\"async\" height=\"120\" width=\"172\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/c352ff1e0ac14e0f9bb2aaf657c6191d.png\" alt=\"\"><img loading=\"lazy\" decoding=\"async\" height=\"158\" width=\"308\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/bae46fca6f584768b036b2c09a6100ff.png\" alt=\"\"><img loading=\"lazy\" decoding=\"async\" height=\"121\" width=\"311\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/0bc3479f74494cabb08e5b11de27615d.png\" alt=\"\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">&nbsp;7.4 \u53cd\u4e1a\u52a1\u5316<\/h3>\n\n\n\n<p>\u53ef\u662f\uff0c\u771f\u7684\u53ef\u4ee5\u8fd9\u6837\u505a\u5417\uff1f\u8981\u56de\u7b54\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u5c31\u8981\u5148\u4e86\u89e3\u4e0b\u5b9e\u9645\u5de5\u4f5c\u4e2d\u7684\u4e1a\u52a1\u4f18\u5148\u539f\u5219\u3002<br>\u6240\u8c13\u7684\u4e1a\u52a1\u4f18\u5148\u539f\u5219\uff0c\u5c31\u662f\u6307\u4e00\u5207\u4ee5\u4e1a\u52a1\u9700\u6c42\u4e3a\u4e3b\uff0c\u6280\u672f\u670d\u52a1\u4e8e\u4e1a\u52a1\u3002\u5b8c\u91d1\u6309\u7167\u7406\u8bba\u7684\u8bbe\u8ba1\u4e0d\u4e00\u5b9a\u5c31\u662f\u6700\u4f18\uff0c\u8fd8\u8981\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u6765\u51b3\u5b9a\u3002\u8fd9\u91cc\u6211\u4eec\u5c31\u6765\u5206\u6790\u4e00\u4e0b\u4e0d\u540c\u9009\u62e9\u7684\u5229\u4e0e\u5f0a\u3002<\/p>\n\n\n\n<p>\u5bf9\u4e8equantity*importprice=importvalue\uff0c\u770b\u8d77\u6765\u201cimportvalue\"\u4f3c\u4e4e\u662f\u4f59\u5b57\u6bb5\uff0c\u4f46\u5e76\u4e0d\u4f1a\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u3002\u53ef\u662f\uff0c\u5982\u679c\u6211\u4eec\u628a\u8fd9\u4e2a\u5b57\u6bb5\u53d6\u6d88\uff0c\u662f\u4f1a\u5f71\u54cd\u4e1a\u52a1\u7684\u3002<br>\u56e0\u4e3a\u6709\u7684\u65f6\u5019\uff0c\u4f9b\u8d27\u5546\u4f1a\u7ecf\u5e38\u8fdb\u884c\u4e00\u4e9b\u4fc3\u9500\u6d3b\u52a8\uff0c\u6309\u91d1\u989d\u4fc3\u9500\uff0c\u90a3\u4ed6\u4eec\u62ff\u6765\u7684\u8fdb\u8d27\u5355\u53ea\u6709\u91d1\u989d\uff0c\u6ca1\u6709\u4ef7\u683c\u3002\u800c\"importprice\"\u53cd\u800c\u662f\u901a\u8fc7\u201cimportvalue\"+\"quantity\"\u8ba1\u7b97\u51fa\u6765\u7684\uff0c\u7ecf\u8fc7\u56db\u820d\u4e94\u5165\uff0c\u4f1a\u4ea7\u751f\u8f83\u5927\u7684\u8bef\u5dee\u3002\u8fd9\u6837\u65e5\u79ef\u6708\u7d2f\uff0c\u6700\u7ec8\u4f1a\u5bfc\u81f4\u67e5\u8be2\u7ed3\u679c\u51fa\u73b0\u8f83\u5927\u504f\u5dee\uff0c\u5f71\u54cd\u7cfb\u7edf\u7684\u53ef\u9760\u6027\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">8. ER\u6a21\u578b<\/h2>\n\n\n\n<p>ER\u6a21\u578b\u5c31\u662f\u4e00\u4e2a\u8fd9\u6837\u7684\u5de5\u5177\u3002ER\u6a21\u578b\u4e5f\u53eb\u4f5c\u5b9e\u4f53\u5173\u7cfb\u6a21\u578b\uff0c\u662f\u7528\u6765\u63cf\u8ff0\u73b0\u5b9e\u751f\u6d3b\u4e2d\u5ba2\u89c2\u5b58\u5728\u7684\u4e8b\u7269\u3001\u4e8b\u7269\u7684\u5c5e\u6027\uff0c\u4ee5\u53ca\u4e8b\u7269\u4e4b\u95f4\u5173\u7cfb\u7684\u4e00\u79cd\u6570\u636e\u6a21\u578b\u3002\u5728\u5f00\u53d1\u57fa\u4e8e\u6570\u636e\u5e93\u7684\u4fe1\u606f\u7cfb\u7edf\u7684\u8bbe\u8ba1\u9636\u6bb5\uff0c\u901a\u5e38\u4f7f\u7528ER\u6a21\u578b\u6765\u63cf\u8ff0\u4fe1\u606f\u9700\u6c42\u548c\u4fe1\u606f\u7279\u6027\uff0c\u5e2e\u52a9\u6211\u4eec\u7406\u6e05\u4e1a\u52a1\u903b\u8f91\uff0c\u4ece\u800c\u8bbe\u8ba1\u51fa\u4f18\u79c0\u7684\u6570\u636e\u5e93\u3002\uff08\u4f60\u5e94\u8be5\u5728\u4e2d\u56fd\u9ad8\u6821\u7684\u6570\u636e\u5e93\u7cfb\u7edf\u5bfc\u8bba\u4e2d\u7b2c3-4\u8282\u8bfe\u5927\u6982\u5c31\u80fd\u5b66\u5230<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8.1 ER \u6a21\u578b\u5305\u62ec\u54ea\u4e9b\u8981\u7d20\uff1f<\/h3>\n\n\n\n<p>ER \u6a21\u578b\u4e2d\u6709\u4e09\u4e2a\u8981\u7d20\uff0c\u5206\u522b\u662f\u5b9e\u4f53\u3001\u5c5e\u6027\u548c\u5173\u7cfb\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9e\u4f53\uff0c\u53ef\u4ee5\u770b\u505a\u662f\u6570\u636e\u5bf9\u8c61\uff0c\u5f80\u5f80\u5bf9\u5e94\u4e8e\u73b0\u5b9e\u751f\u6d3b\u4e2d\u7684\u771f\u5b9e\u5b58\u5728\u7684\u4e2a\u4f53\u3002\u5728 ER \u6a21\u578b\u4e2d\uff0c\u7528\u77e9\u5f62\u6765\u8868\u793a\u3002\u5b9e\u4f53\u5206\u4e3a\u4e24\u7c7b\uff0c\u5206\u522b\u662f\u5f3a\u5b9e\u4f53\u548c\u5f31\u5b9e\u4f53\u3002\u5f3a\u5b9e\u4f53\u662f\u6307\u4e0d\u4f9d\u8d56\u4e8e\u5176\u4ed6\u5b9e\u4f53\u7684\u5b9e\u4f53\uff1b\u5f31\u5b9e\u4f53\u662f\u6307\u5bf9\u53e6\u4e00\u4e2a\u5b9e\u4f53\u6709\u5f88\u5f3a\u7684\u4f9d\u8d56\u5173\u7cfb\u7684\u5b9e\u4f53\u3002<\/li>\n\n\n\n<li>\u5c5e\u6027\uff0c\u5219\u662f\u6307\u5b9e\u4f53\u7684\u7279\u6027\u3002\u6bd4\u5982\u8d85\u5e02\u7684\u5730\u5740\u3001\u8054\u7cfb\u7535\u8bdd\u3001\u5458\u5de5\u6570\u7b49\u3002\u5728 ER \u6a21\u578b\u4e2d\u7528\u692d\u5706\u5f62\u6765\u8868\u793a\u3002<\/li>\n\n\n\n<li>\u5173\u7cfb\uff0c\u5219\u662f\u6307\u5b9e\u4f53\u4e4b\u95f4\u7684\u8054\u7cfb\u3002\u6bd4\u5982\u8d85\u5e02\u628a\u5546\u54c1\u5356\u7ed9\u987e\u5ba2\uff0c\u5c31\u662f\u4e00\u79cd\u8d85\u5e02\u4e0e\u987e\u5ba2\u4e4b\u95f4\u7684\u8054\u7cfb\u3002\u5728 ER \u6a21\u578b\u4e2d\u7528\u83f1\u5f62\u6765\u8868\u793a\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6ce8\u610f\uff1a\u5b9e\u4f53\u548c\u5c5e\u6027\u4e0d\u5bb9\u6613\u533a\u5206\uff01\u8fd9\u91cc\u63d0\u4f9b\u4e00\u4e2a\u539f\u5219\uff1a\u6211\u4eec\u8981\u4ece\u7cfb\u7edf\u6574\u4f53\u7684\u89d2\u5ea6\u51fa\u53d1\u53bb\u770b\uff0c\u53ef\u4ee5\u72ec\u7acb\u5b58\u5728\u7684\u662f\u5b9e\u4f53\uff0c\u4e0d\u53ef\u518d\u5206\u7684\u662f\u5c5e\u6027\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5c5e\u6027\u4e0d\u80fd\u5305\u542b\u5176\u4ed6\u5c5e\u6027\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8.2 \u5173\u7cfb\u7684\u7c7b\u578b<\/h3>\n\n\n\n<p>\u5728 ER \u6a21\u578b\u7684 3 \u4e2a\u8981\u7d20\u4e2d\uff0c\u5173\u7cfb\u53c8\u53ef\u4ee5\u5206\u4e3a 3 \u79cd\u7c7b\u578b\uff0c\u5206\u522b\u662f\u4e00\u5bf9\u4e00\u3001\u4e00\u5bf9\u591a\u3001\u591a\u5bf9\u591a\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e00\u5bf9\u4e00\uff1a\u6307\u5b9e\u4f53\u4e4b\u95f4\u7684\u5173\u7cfb\u662f\u4e00\u4e00\u5bf9\u5e94\u7684\uff0c\u6bd4\u5982\u4e2a\u4eba\u4e0e\u8eab\u4efd\u8bc1\u4fe1\u606f\u4e4b\u95f4\u7684\u5173\u7cfb\u5c31\u662f\u4e00\u5bf9\u4e00\u7684\u5173\u7cfb\u3002\u4e00\u4e2a\u4eba\u53ea\u80fd\u6709\u4e00\u4e2a\u8eab\u4efd\u8bc1\u4fe1\u606f\uff0c\u4e00\u4e2a\u8eab\u4efd\u8bc1\u4fe1\u606f\u4e5f\u53ea\u5c5e\u4e8e\u4e00\u4e2a\u4eba\u3002<\/li>\n\n\n\n<li>\u4e00\u5bf9\u591a\uff1a\u6307\u4e00\u8fb9\u7684\u5b9e\u4f53\u901a\u8fc7\u5173\u7cfb\uff0c\u53ef\u4ee5\u5bf9\u5e94\u591a\u4e2a\u53e6\u5916\u4e00\u8fb9\u7684\u5b9e\u4f53\u3002\u76f8\u53cd\uff0c\u53e6\u5916\u4e00\u8fb9\u7684\u5b9e\u4f53\u901a\u8fc7\u8fd9\u4e2a\u5173\u7cfb\uff0c\u5219\u53ea\u80fd\u5bf9\u5e94\u552f\u4e00\u7684\u4e00\u8fb9\u7684\u5b9e\u4f53\u3002\u6bd4\u5982\u8bf4\uff0c\u6211\u4eec\u65b0\u5efa\u4e00\u4e2a\u73ed\u7ea7\u8868\uff0c\u800c\u6bcf\u4e2a\u73ed\u7ea7\u90fd\u6709\u591a\u4e2a\u5b66\u751f\uff0c\u6bcf\u4e2a\u5b66\u751f\u5219\u5bf9\u5e94\u4e00\u4e2a\u73ed\u7ea7\uff0c\u73ed\u7ea7\u5bf9\u5b66\u751f\u5c31\u662f\u4e00\u5bf9\u591a\u7684\u5173\u7cfb\u3002<\/li>\n\n\n\n<li>\u591a\u5bf9\u591a\uff1a\u6307\u5173\u7cfb\u4e24\u8fb9\u7684\u5b9e\u4f53\u90fd\u53ef\u4ee5\u901a\u8fc7\u5173\u7cfb\u5bf9\u5e94\u591a\u4e2a\u5bf9\u65b9\u7684\u5b9e\u4f53\u3002\u6bd4\u5982\u5728\u8fdb\u8d27\u6a21\u5757\u4e2d\uff0c\u4f9b\u8d27\u5546\u4e0e\u8d85\u5e02\u4e4b\u95f4\u7684\u5173\u7cfb\u5c31\u662f\u591a\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u4e00\u4e2a\u4f9b\u8d27\u5546\u53ef\u4ee5\u7ed9\u591a\u4e2a\u8d85\u5e02\u4f9b\u8d27\uff0c\u4e00\u4e2a\u8d85\u5e02\u4e5f\u53ef\u4ee5\u4ece\u591a\u4e2a\u4f9b\u8d27\u5546\u90a3\u91cc\u91c7\u8d2d\u5546\u54c1\u3002\u518d\u6bd4\u5982\u4e00\u4e2a\u9009\u8bfe\u8868\uff0c\u6709\u8bb8\u591a\u79d1\u76ee\uff0c\u6bcf\u4e2a\u79d1\u76ee\u6709\u5f88\u591a\u5b66\u751f\u9009\uff0c\u800c\u6bcf\u4e2a\u5b66\u751f\u53c8\u53ef\u4ee5\u9009\u62e9\u591a\u4e2a\u79d1\u76ee\uff0c\u8fd9\u5c31\u662f\u591a\u5bf9\u591a\u7684\u5173\u7cfb\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u6211\u4eec\u8bbe\u8ba1\u7684\u6848\u4f8b\u662f\u7535\u5546\u4e1a\u52a1\uff0c\u7531\u4e8e\u7535\u5546\u4e1a\u52a1\u592a\u8fc7\u5e9e\u5927\u4e14\u590d\u6742\uff0c\u6240\u4ee5\u6211\u4eec\u505a\u4e86\u4e1a\u52a1\u7b80\u5316\uff0c\u6bd4\u5982\u9488\u5bf9<br>SKU\uff08StockKeepingUnit\uff0c\u5e93\u5b58\u91cf\u5355\u4f4d\uff09\u548cSPU\uff08StandardProduct Unit\uff0c\u6807\u51c6\u5316\u4ea7\u54c1\u5355\u5143\uff09\u7684\u542b\u4e49\u4e0a\uff0c\u6211\u4eec\u76f4\u63a5\u4f7f\u7528\u4e86SKU\uff0c\u5e76\u6ca1\u6709\u63d0\u53caSPU\u7684\u6982\u5ff5\u3002\u672c\u6b21\u7535\u5546\u4e1a\u52a1\u8bbe\u8ba1\u603b\u5171\u67098\u4e2a\u5b9e\u4f53\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u00b7\u5730\u5740\u5b9e\u4f53<\/li>\n\n\n\n<li>\u00b7\u7528\u6237\u5b9e\u4f53<\/li>\n\n\n\n<li>\u00b7\u8d2d\u7269\u8f66\u5b9e\u4f53<\/li>\n\n\n\n<li>\u00b7\u8bc4\u8bba\u5b9e\u4f53<\/li>\n\n\n\n<li>\u00b7\u5546\u54c1\u5b9e\u4f53<\/li>\n\n\n\n<li>\u00b7\u5546\u54c1\u5206\u7c7b\u5b9e\u4f53<\/li>\n\n\n\n<li>\u00b7\u8ba2\u5355\u5b9e\u4f53<\/li>\n\n\n\n<li>\u00b7\u8ba2\u5355\u8be6\u60c5\u5b9e\u4f53<\/li>\n<\/ol>\n\n\n\n<p>\u5176\u4e2d\uff0c\u7528\u6237\u548c\u5546\u54c1\u5206\u7c7b\u662f\u5f3a\u5b9e\u4f53\uff0c\u56e0\u4e3a\u5b83\u4eec\u4e0d\u9700\u8981\u4f9d\u8d56\u5176\u4ed6\u4efb\u4f55\u5b9e\u4f53\u3002\u800c\u5176\u4ed6\u5c5e\u4e8e\u5f31\u5b9e\u4f53\uff0c\u56e0\u4e3a\u5b83\u4eec\u867d\u7136\u90fd\u53ef\u4ee5\u72ec\u7acb\u5b58\u5728\uff0c\u4f46\u662f\u5b83\u4eec\u90fd\u4f9d\u8d56\u7528\u6237\u8fd9\u4e2a\u5b9e\u4f53\uff0c\u56e0\u6b64\u90fd\u662f\u5f31\u5b9e\u4f53\u3002\u77e5\u9053\u4e86\u8fd9\u4e9b\u8981\u7d20\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u7ed9\u7535\u5546\u4e1a\u52a1\u521b\u5efaER\u6a21\u578b\u4e86\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" height=\"416\" width=\"605\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/836932afca434e3d8dade999276cfa26.png\" alt=\"\"><\/p>\n\n\n\n<p>&nbsp;\u6709\u4e86\u8fd9\u4e2aER\u6a21\u578b\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u4ece\u6574\u4f53\u4e0a\u7406\u89e3\u7535\u5546\u7684\u4e1a\u52a1\u4e86\u3002\u521a\u521a\u7684ER\u6a21\u578b\u5c55\u793a\u4e86\u7535\u5546\u4e1a\u52a1\u7684\u6846\u67b6\uff0c\u4f46\u662f\u53ea\u5305\u62ec\u4e86\u8ba2\u5355\uff0c\u5730\u5740\uff0c\u7528\u6237\uff0c\u8d2d\u7269\u8f66\uff0c\u8bc4\u8bba\uff0c\u5546\u54c1\uff0c\u5546\u54c1\u5206\u7c7b\u548c\u8ba2\u5355\u8be6\u60c5\u8fd9\u516b\u4e2a\u5b9e\u4f53\uff0c\u4ee5\u53ca\u5b83\u4eec\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u8fd8\u4e0d\u80fd\u5bf9\u5e94\u5230\u5177\u4f53\u7684\u8868\uff0c\u4ee5\u53ca\u8868\u4e0e\u8868\u4e4b\u95f4\u7684\u5173\u8054\u3002\u6211\u4eec\u9700\u8981\u628a\u5c5e\u6027\u52a0\u4e0a\uff0c\u7528\u692d\u5706\u6765\u8868\u793a\uff0c\u8fd9\u6837\u6211\u4eec\u5f97\u5230\u7684ER\u6a21\u578b\u5c31\u66f4\u52a0\u5b8c\u6574\u4e86\u3002<br>\u56e0\u6b64\uff0c\u6211\u4eec\u9700\u8981\u8fdb\u4e00\u6b65\u53bb\u8bbe\u8ba1\u4e00\u4e0b\u8fd9\u4e2aER\u6a21\u578b\u7684\u5404\u4e2a\u5c40\u90e8\uff0c\u4e5f\u5c31\u662f\u7ec6\u5316\u4e0b\u7535\u5546\u7684\u5177\u4f53\u4e1a\u52a1\u6d41\u7a0b\uff0c\u7136\u540e\u628a\u5b83\u4eec\u7efc\u5408\u5230\u4e00\u8d77\uff0c\u5f62\u6210\u4e00\u4e2a\u5b8c\u6574\u7684ER\u6a21\u578b\u3002\u8fd9\u6837\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u7406\u6e05\u6570\u636e\u5e93\u7684\u8bbe\u8ba1\u601d\u8def\u3002<\/p>\n\n\n\n<p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u518d\u5206\u6790\u4e00\u4e0b\u5404\u4e2a\u5b9e\u4f53\u90fd\u6709\u54ea\u4e9b\u5c5e\u6027\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uff081\uff09\u5730\u5740\u5b9e\u4f53\u5305\u62ec\u7528\u6237\u7f16\u53f7\u3001\u7701\u3001\u5e02\u3001\u5730\u533a\u3001\u653f\u4ef6\u4eba\u3001\u8054\u7cfb\u7535\u8bdd\u3001\u662f\u5426\u662f\u9ed8\u8ba4\u5730\u5740\u3002<\/li>\n\n\n\n<li>\uff082\uff09\u7528\u6237\u5b9e\u4f53\u5305\u62ec\u7528\u6237\u7f16\u53f7\u3001\u7528\u6237\u540d\u79f0\u3001\u6635\u79f0\u3001\u7528\u6237\u5bc6\u7801\u3001\u624b\u673a\u53f7\u3001\u90ae\u7bb1\u3001\u5934\u50cf\u3001\u7528\u6237\u7ea7\u522b\u3002<\/li>\n\n\n\n<li>\uff083\uff09\u8d2d\u7269\u8f66\u5b9e\u4f53\u5305\u62ec\u8d2d\u7269\u8f66\u7f16\u53f7\u3001\u7528\u6237\u7f16\u53f7\u3001\u5546\u54c1\u7f16\u53f7\u3001\u5546\u54c1\u6570\u91cf\u3001\u56fe\u7247\u6587\u4ef6url\u3002<\/li>\n\n\n\n<li>\uff084\uff09\u8ba2\u5355\u5b9e\u4f53\u5305\u62ec\u8ba2\u5355\u7f16\u53f7\u3001\u6536\u8d27\u4eba\u3001\u6536\u4ef6\u4eba\u7535\u8bdd\u3001\u603b\u91d1\u989d\u3001\u7528\u6237\u7f16\u53f7\u3001\u4ed8\u6b3e\u65b9\u5f0f\u3001\u9001\u8d27\u5730\u5740\u3001\u4e0b\u5355\u65f6\u95f4\u3002<\/li>\n\n\n\n<li>\uff085\uff09\u8ba2\u5355\u8be6\u60c5\u5b9e\u4f53\u5305\u62ec\u8ba2\u5355\u8be6\u60c5\u7f16\u53f7\u3001\u8ba2\u5355\u7f16\u53f7\u3001\u5546\u54c1\u540d\u79f0\u3001\u5546\u54c1\u7f16\u53f7\u3001\u5546\u54c1\u6570\u91cf\u3002<\/li>\n\n\n\n<li>\uff086\uff09\u5546\u54c1\u5b9e\u4f53\u5305\u62ec\u5546\u54c1\u7f16\u53f7\u3001\u4ef7\u683c\u3001\u5546\u54c1\u540d\u79f0\u3001\u5206\u7c7b\u7f16\u53f7\u3001\u662f\u5426\u9500\u552e\uff0c\u89c4\u683c\u3001\u989c\u8272\u3002<\/li>\n\n\n\n<li>\uff087\uff09\u8bc4\u8bba\u5b9e\u4f53\u5305\u62ec\u8bc4\u8bbaid\u3001\u8bc4\u8bba\u5185\u5bb9\u3001\u8bc4\u8bba\u65f6\u95f4\u3001\u7528\u6237\u7f16\u53f7\u3001\u5546\u54c1\u7f16\u53f7<\/li>\n\n\n\n<li>\uff088\uff09\u5546\u54c1\u5206\u7c7b\u5b9e\u4f53\u5305\u62ec\u7c7b\u522b\u7f16\u53f7\u3001\u7c7b\u522b\u540d\u79f0\u3001\u7236\u7c7b\u522b\u7f16\u53f7<\/li>\n<\/ul>\n\n\n\n<p><img loading=\"lazy\" decoding=\"async\" height=\"419\" width=\"683\" src=\"https:\/\/i-blog.csdnimg.cn\/direct\/7cbe716be76b417d896a1de874bb1e3b.png\" alt=\"\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">8.5 ER\u6a21\u578b\u56fe\u8f6c\u6362\u6210\u6570\u636e\u8868<\/h3>\n\n\n\n<p>\u901a\u8fc7\u7ed8\u5236ER\u6a21\u578b\uff0c\u6211\u4eec\u5df2\u7ecf\u7406\u6e05\u4e86\u4e1a\u52a1\u903b\u8f91\uff0c\u73b0\u5728\uff0c\u6211\u4eec\u5c31\u8981\u8fdb\u884c\u975e\u5e38\u91cd\u8981\u7684\u4e00\u6b65\u4e86\uff1a\u628a\u7ed8\u5236\u597d\u7684ER\u6a21\u578b\uff0c\u6362\u6210\u5177\u4f53\u7684\u6570\u636e\u8868\uff0c\u4e0b\u9762\u4ecb\u7ecd\u4e0b\u8f6c\u6362\u7684\u539f\u5219\uff1a<\/p>\n\n\n\n<p>(1\uff09\u4e00\u4e2a\u5b9e\u4f53\u901a\u5e38\u8f6c\u6362\u6210\u4e00\u4e2a\u6570\u636e\u8868\uff1b<br>(2\uff09\u4e00\u4e2a\u591a\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u901a\u5e38\u4e5f\u8f6c\u6362\u6210\u4e00\u4e2a\u6570\u636e\u8868\uff1b<br>(3\uff09\u4e00\u4e2a1\u5bf91\uff0c\u6216\u80051\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u5f80\u5f80\u901a\u8fc7\u8868\u7684\u5916\u952e\u6765\u8868\u8fbe\uff0c\u800c\u4e0d\u662f\u8bbe\u8ba1\u4e00\u4e2a\u65b0\u7684\u6570\u636e\u8868\uff1b<br>(4\uff09\u5c5e\u6027\u8f6c\u6362\u6210\u8868\u7684\u5b57\u6bb5\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u7528\u6237\u5b9e\u4f53\u8f6c\u6362\u6210\u7528\u6237\u8868\uff08user_info\uff09\u7684\u4ee3\u7801\u5982\u4e0b\u6240\u793a\u3002\n\nCREATE TABLE `user_info` (\n  `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '\u7f16\u53f7',\n  `user_name` varchar(200) DEFAULT NULL COMMENT '\u7528\u6237\u540d\u79f0',\n  `nick_name` varchar(200) DEFAULT NULL COMMENT '\u7528\u6237\u6635\u79f0',\n  `passwd` varchar(200) DEFAULT NULL COMMENT '\u7528\u6237\u5bc6\u7801',\n  `phone_num` varchar(200) DEFAULT NULL COMMENT '\u624b\u673a\u53f7',\n  `email` varchar(200) DEFAULT NULL COMMENT '\u90ae\u7bb1',\n  `head_img` varchar(200) DEFAULT NULL COMMENT '\u5934\u50cf',\n  `user_level` varchar(200) DEFAULT NULL COMMENT '\u7528\u6237\u7ea7\u522b',\n  PRIMARY KEY (`id`)\n) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8 COMMENT='\u7528\u6237\u8868';\n\n\u5546\u54c1\u5206\u7c7b\u5b9e\u4f53\u8f6c\u6362\u6210\u5546\u54c1\u5206\u7c7b\u8868\uff08base_category\uff09\uff0c\u7531\u4e8e\u5546\u54c1\u5206\u7c7b\u53ef\u4ee5\u6709\u4e00\u7ea7\u5206\u7c7b\u548c\u4e8c\u7ea7\u5206\u7c7b\uff0c\n\u6bd4\u5982\u4e00\u7ea7\u5206\u7c7b\u6709\u5bb6\u7535\u3001\u624b\u673a\u7b49\u7b49\u5206\u7c7b\uff0c\u4e8c\u7ea7\u5206\u7c7b\u53ef\u4ee5\u6839\u636e\u624b\u673a\u7684\u4e00\u7ea7\u5206\u7c7b\u5206\u4e3a\u624b\u673a\u914d\u4ef6\u3001\u8fd0\u8425\u5546\u7b49\n\uff0c\u8fd9\u91cc\u6211\u4eec\u628a\u5546\u54c1\u5206\u7c7b\u5b9e\u4f53\u89c4\u5212\u4e3a\u4e24\u5f20\u8868\uff0c\u5206\u522b\u662f\u4e00\u7ea7\u5206\u7c7b\u8868\u548c\u4e8c\u7ea7\u5206\u7c7b\u8868\uff0c\u4e4b\u6240\u4ee5\u8fd9\u4e48\u89c4\u5212\u662f\u56e0\n\u4e3a\u4e00\u7ea7\u5206\u7c7b\u548c\u4e8c\u7ea7\u5206\u7c7b\u90fd\u662f\u6709\u9650\u7684\uff0c\u5b58\u50a8\u4e3a\u4e24\u5f20\u8868\u4e1a\u52a1\u7ed3\u6784\u66f4\u52a0\u6e05\u6670\u3002\n\n# \u4e00\u7ea7\u5206\u7c7b\u8868\nCREATE TABLE `base_category1` (\n  `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '\u7f16\u53f7',\n  `name` varchar(10) NOT NULL COMMENT '\u5206\u7c7b\u540d\u79f0',\n  PRIMARY KEY (`id`) USING BTREE\n) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC COMMENT='\u4e00\u7ea7\u5206\u7c7b\u8868';\n\n# \u4e8c\u7ea7\u5206\u7c7b\u8868\nCREATE TABLE `base_category2` (\n  `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '\u7f16\u53f7',\n  `name` varchar(20) NOT NULL COMMENT '\u4e8c\u7ea7\u5206\u7c7b\u540d\u79f0',\n  `category1_id` bigint(20) DEFAULT NULL COMMENT '\u4e00\u7ea7\u5206\u7c7b\u7f16\u53f7',\n  PRIMARY KEY (`id`) USING BTREE\n) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC COMMENT='\u4e8c\u7ea7\u5206\u7c7b\u8868';\n\n\u90a3\u4e48\u5982\u679c\u89c4\u5212\u4e3a\u4e00\u5f20\u8868\u5462\uff0c\u8868\u7ed3\u6784\u5982\u4e0b\u6240\u793a\u3002\n\nCREATE TABLE `base_category` (\n  `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '\u7f16\u53f7',\n  `name` varchar(200) NOT NULL COMMENT '\u5206\u7c7b\u540d\u79f0',\n  `category_parent_id` bigint(20) DEFAULT NULL COMMENT '\u7236\u5206\u7c7b\u7f16\u53f7',\n  PRIMARY KEY (`id`) USING BTREE\n) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC COMMENT='\u5206\u7c7b\u8868';\n\n\u5982\u679c\u8fd9\u6837\u5206\u7c7b\u7684\u8bdd\uff0c\u90a3\u4e48\u67e5\u8be2\u4e00\u7ea7\u5206\u7c7b\u7684\u65f6\u5019\uff0c\u5c31\u9700\u8981\u5224\u65ad\u7236\u5206\u7c7b\u7f16\u53f7\u662f\u5426\u4e3a\u7a7a\uff0c\u4f46\u662f\u5982\u679c\u63d2\n\u5165\u4e00\u7ea7\u5206\u7c7b\u7684\u65f6\u5019\u4e5f\u662f\u7a7a\uff0c\u5c31\u5bb9\u6613\u9020\u6210\u4e1a\u52a1\u6570\u636e\u6df7\u4e71\u3002\u800c\u4e14\u67e5\u8be2\u4e8c\u7ea7\u5206\u7c7b\u7684\u65f6\u5019IS NOT NULL\n\u6761\u4ef6\u662f\u65e0\u6cd5\u4f7f\u7528\u5230\u7d22\u5f15\u7684\u3002\u540c\u65f6\uff0c\u8fd9\u6837\u7684\u8bbe\u8ba1\u4e5f\u4e0d\u7b26\u5408\u7b2c\u4e8c\u8303\u5f0f\uff08\u56e0\u4e3a\u7236\u5206\u7c7b\u7f16\u53f7\u5e76\u4e0d\u4f9d\u8d56\u5206\n\u7c7b\u7f16\u53f7ID\uff0c\u56e0\u4e3a\u7236\u5206\u7c7b\u7f16\u53f7\u53ef\u4ee5\u6709\u5f88\u591a\u6570\u636e\u4e3aNULL\uff09\uff0c\u6240\u4ee5\u9700\u8981\u8fdb\u884c\u8868\u7684\u62c6\u5206\u3002\u56e0\u6b64\u65e0\u8bba\u662f\u4e1a\n\u52a1\u9700\u6c42\u8fd8\u662f\u6570\u636e\u5e93\u8868\u7684\u89c4\u8303\u6765\u770b\u90fd\u5e94\u8be5\u62c6\u5206\u4e3a\u4e24\u5f20\u8868\u3002\n\n\n...................\u4e00\u5171\u5efa\u7acb\u4e865\u4e2a\u8868<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">2.\u4e00\u4e2a\u591a\u5bf9\u591a\u7684\u5173\u7cfb\u8f6c\u6362\u6210\u4e00\u4e2a\u6570\u636e\u8868<\/h4>\n\n\n\n<p>\u8fd9\u4e2a ER \u6a21\u578b\u4e2d\u7684\u591a\u5bf9\u591a\u7684\u5173\u7cfb\u6709 1 \u4e2a\uff0c\u5373\u5546\u54c1\u548c\u8ba2\u5355\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u540c\u54c1\u7c7b\u7684\u5546\u54c1\u53ef\u4ee5\u51fa\u73b0\u5728\u4e0d\u540c\u7684\u8ba2\u5355\u4e2d\uff0c\u4e0d\u540c\u7684\u8ba2\u5355\u4e5f\u53ef\u4ee5\u5305\u542b\u540c\u4e00\u7c7b\u578b\u7684\u5546\u54c1\uff0c\u6240\u4ee5\u5b83\u4eec\u4e4b\u95f4\u7684\u5173\u7cfb\u662f\u591a\u5bf9\u591a\u3002\u9488\u5bf9\u8fd9\u79cd\u60c5\u51b5\u9700\u8981\u8bbe\u8ba1\u4e00\u4e2a\u72ec\u7acb\u7684\u8868\u6765\u8868\u793a\uff0c\u8fd9\u79cd\u8868\u4e00\u822c\u79f0\u4e3a\u4e2d\u95f4\u8868\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u8bbe\u8ba1\u4e00\u4e2a\u72ec\u7acb\u7684\u8ba2\u5355\u8be6\u60c5\u8868\uff0c\u6765\u4ee3\u8868\u5546\u54c1\u548c\u8ba2\u5355\u4e4b\u95f4\u7684\u5305\u542b\u5173\u7cfb\u3002\u8fd9\u4e2a\u8868\u5173\u8054\u5230 2 \u4e2a\u5b9e\u4f53\uff0c\u5206\u522b\u662f\u8ba2\u5355\u3001\u5546\u54c1\u3002\u6240\u4ee5\uff0c\u8868\u4e2d\u5fc5\u987b\u8981\u5305\u62ec\u8fd9 2 \u4e2a\u5b9e\u4f53\u8f6c\u6362\u6210\u7684\u8868\u7684\u4e3b\u952e\u3002\u9664\u6b64\u4e4b\u5916\uff0c\u6211\u4eec\u8fd8\u8981\u5305\u62ec\u8be5\u5173\u7cfb\u81ea\u6709\u7684\u5c5e\u6027\uff1a\u5546\u54c1\u6570\u91cf\uff0c\u5546\u54c1\u4e0b\u5355\u4ef7\u683c\u4ee5\u53ca\u5546\u54c1\u540d\u79f0\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u8ba2\u5355\u8be6\u60c5\u8868\nCREATE TABLE `order_detail` (\n  `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '\u8ba2\u5355\u8be6\u60c5\u7f16\u53f7',\n  `order_id` bigint(29) DEFAULT NULL COMMENT '\u8ba2\u5355\u7f16\u53f7',\n  `sku_id` bigint(20) DEFAULT NULL COMMENT 'sku_id',\n  `sku_name` varchar(200) DEFAULT NULL COMMENT 'sku\u540d\u79f0',\n  `sku_num` varchar(200) DEFAULT NULL COMMENT '\u8d2d\u4e70\u4e2a\u6570',\n  `create_time` datetime DEFAULT NULL COMMENT '\u64cd\u4f5c\u65f6\u95f4',\n  PRIMARY KEY (`id`) USING BTREE\n) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC COMMENT='\u8ba2\u5355\u660e\u7ec6\u8868';<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">3. \u901a\u8fc7\u5916\u952e\u6765\u8868\u8fbe 1 \u5bf9\u591a\u7684\u5173\u7cfb<\/h4>\n\n\n\n<p>\u5728\u4e0a\u9762\u7684\u8868\u7684\u8bbe\u8ba1\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u7528\u5916\u952e\u6765\u8868\u8fbe 1 \u5bf9\u591a\u7684\u5173\u7cfb\u3002\u6bd4\u5982\u5728\u5546\u54c1\u8bc4\u8bba\u8868 sku_comments \u4e2d\uff0c\u6211\u4eec\u5206\u522b\u628a user_id\u3001sku_id \u5b9a\u4e49\u6210\u5916\u952e\uff0c\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u8bed\u53e5\u8bbe\u7f6e\u5916\u952e\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CONSTRAINT fk_comment_user FOREIGN KEY (user_id) REFERENCES user_info (id),\n\nCONSTRAINT fk_comment_sku FOREIGN KEY (sku_id) REFERENCES sku_info (sku_id)<img loading=\"lazy\" decoding=\"async\" height=\"15\" width=\"15\" src=\"blob:https:\/\/eve2333.top\/bc563322-4169-47f1-b8a1-be38aedf1802\"><\/code><\/pre>\n\n\n\n<p>\u5916\u952e\u7ea6\u675f\u4e3b\u8981\u662f\u5728\u6570\u636e\u5e93\u5c42\u9762\u4e0a\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\uff0c\u4f46\u662f\u56e0\u4e3a\u63d2\u5165\u548c\u66f4\u65b0\u6570\u636e\u9700\u8981\u68c0\u67e5\u5916\u952e\uff0c\u7406\u8bba\u4e0a\u6027\u80fd\u4f1a\u6709\u6240\u4e0b\u964d\uff0c\u5bf9\u6027\u80fd\u662f\u8d1f\u9762\u7684\u5f71\u54cd\u3002<\/p>\n\n\n\n<p>\u5b9e\u9645\u7684\u9879\u76ee\uff0c\u4e0d\u5efa\u8bae\u4f7f\u7528\u5916\u952e\uff0c\u4e00\u65b9\u9762\u662f\u964d\u4f4e\u5f00\u53d1\u7684\u590d\u6742\u5ea6\uff08\u6709\u5916\u952e\u7684\u8bdd\u4e3b\u4ece\u8868\u7c7b\u7684\u64cd\u4f5c\u5fc5\u987b\u5148\u64cd\u4f5c\u4e3b\u8868\uff09\uff0c\u53e6\u5916\u662f\u6709\u5916\u952e\u5728\u5904\u7406\u6570\u636e\u7684\u65f6\u5019\u975e\u5e38\u9ebb\u70e6\u3002\u5728\u7535\u5546\u5e73\u53f0\uff0c\u7531\u4e8e\u5e76\u53d1\u4e1a\u52a1\u91cf\u6bd4\u8f83\u5927\uff0c\u6240\u4ee5\u4e00\u822c\u4e0d\u8bbe\u7f6e\u5916\u952e\uff0c\u4ee5\u514d\u5f71\u54cd\u6570\u636e\u5e93\u6027\u80fd\u3002<\/p>\n\n\n\n<p>\u5728\u5e94\u7528\u5c42\u9762\u505a\u6570\u636e\u7684\u4e00\u81f4\u6027\u68c0\u67e5\uff0c\u672c\u6765\u5c31\u662f\u4e00\u4e2a\u6b63\u5e38\u7684\u529f\u80fd\u9700\u6c42\u3002\u5982\u5b66\u751f\u9009\u8bfe\u7684\u573a\u666f\uff0c\u8bfe\u7a0b\u80af\u5b9a\u4e0d\u662f\u8f93\u5165\u7684\uff0c\u800c\u662f\u901a\u8fc7\u4e0b\u62c9\u6216\u67e5\u627e\u7b49\u65b9\u5f0f\u4ece\u7cfb\u7edf\u4e2d\u8fdb\u884c\u9009\u53d6\uff0c\u5c31\u80fd\u591f\u4fdd\u8bc1\u662f\u5408\u6cd5\u7684\u8bfe\u7a0bID\uff0c\u56e0\u6b64\u5c31\u4e0d\u9700\u8981\u9760\u6570\u636e\u5e93\u7684\u5916\u952e\u6765\u68c0\u67e5\u4e86\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1.\u6570\u636e\u8868\u7684\u4e2a\u6570\u8d8a\u5c11\u8d8a\u597d<\/li>\n\n\n\n<li>2.\u6570\u636e\u8868\u4e2d\u7684\u5b57\u6bb5\u4e2a\u6570\u8d8a\u5c11\u8d8a\u597d<\/li>\n\n\n\n<li>3.\u6570\u636e\u8868\u4e2d\u8054\u5408\u4e3b\u952e\u7684\u5b57\u6bb5\u4e2a\u6570\u8d8a\u5c11\u8d8a\u597d<\/li>\n\n\n\n<li>4.\u4f7f\u7528\u4e3b\u952e\u548c\u5916\u952e\u8d8a\u591a\u8d8a\u597d<\/li>\n<\/ul>\n\n\n\n<p>\u4e09\u5c11\u4e00\u591a\u201d\u539f\u5219\u7684\u6838\u5fc3\u5c31\u662f\u7b80\u5355\u53ef\u590d\u7528\u3002\u7b80\u5355\u6307\u7684\u662f\u7528\u66f4\u5c11\u7684\u8868\u3001\u66f4\u5c11\u7684\u5b57\u6bb5\u3001\u66f4\u5c11\u7684\u8054\u5408\u4e3b\u952e\u5b57\u6bb5\u6765\u5b8c\u6210\u6570\u636e\u8868\u7684\u8bbe\u8ba1\u3002\u53ef\u590d\u7528\u5219\u662f\u901a\u8fc7\u4e3b\u952e\u3001\u5916\u952e\u7684\u4f7f\u7528\u6765\u589e\u5f3a\u6570\u636e\u8868\u4e4b\u95f4\u7684\u590d\u7528\u7387\u3002\u56e0\u4e3a\u4e00\u4e2a\u4e3b\u952e\u53ef\u4ee5\u7406\u89e3\u662f\u4e00\u5f20\u8868\u7684\u4ee3\u8868\u3002\u952e\u8bbe\u8ba1\u5f97\u8d8a\u591a\uff0c\u8bc1\u660e\u5b83\u4eec\u4e4b\u95f4\u7684\u5229\u7528\u7387\u8d8a\u9ad8\u3002<br>\u6ce8\u610f\uff1a\u8fd9\u4e2a\u539f\u5219\u5e76\u4e0d\u662f\u7edd\u5bf9\u7684\uff0c\u6709\u65f6\u5019\u6211\u4eec\u9700\u8981\u727a\u7272\u6570\u636e\u7684\u6c89\u4f59\u5ea6\u6765\u6362\u53d6\u6570\u636e\u5904\u7406\u7684\u6548\u7387\u3002<\/p>\n\n\n\n<p>10\u8fd8\u6709\u4e00\u5806\u5efa\u8bae\u5728pdf\u8bf4\u4e8622\u9875\uff0c\u771f\u7684\u725b\u903c<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">&nbsp;11.powerdesigner\u7684\u4f7f\u7528<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.bilibili.com\/video\/BV1iq4y1u7vj?spm_id_from=333.788.player.switch&amp;vd_source=b31958e33027799323b8b7d77ae181d4&amp;p=158\" target=\"_blank\"  rel=\"nofollow\" >158-PowerDesigner\u521b\u5efa\u6982\u5ff5\u3001\u7269\u7406\u6570\u636e\u6a21\u578b_\u54d4\u54e9\u54d4\u54e9_bilibili<\/a> \u200b<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp;\u7b2c11\u7ae0_\u6570\u636e\u5e93\u7684\u8bbe\u8ba1\u89c4\u8303 \u826f\u597d\u7684\u6570\u636e\u5e93\u8bbe\u8ba1\u5219\u6709\u4ee5\u4e0b\u4f18\u70b9\uff1a \u603b\u4e4b\uff0c\u5f00\u59cb\u8bbe\u7f6e\u6570\u636e\u5e93\u7684\u65f6\u5019\uff0c\u6211\u4eec\u5c31\u9700\u8981\u91cd\u89c6\u6570\u636e\u8868\u7684\u8bbe\u8ba1\u3002\u4e3a &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[2],"tags":[16],"class_list":["post-913","post","type-post","status-publish","format-standard","hentry","category-2","tag-sql"],"_links":{"self":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/913","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=913"}],"version-history":[{"count":1,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/913\/revisions"}],"predecessor-version":[{"id":914,"href":"https:\/\/eve2333.top\/index.php?rest_route=\/wp\/v2\/posts\/913\/revisions\/914"}],"wp:attachment":[{"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=913"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=913"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eve2333.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}