{"id":69,"date":"2026-04-05T11:26:11","date_gmt":"2026-04-05T11:26:11","guid":{"rendered":"https:\/\/www.we-notes.com\/tw\/power-of-attributes-in-erd-diagrams\/"},"modified":"2026-04-05T11:26:11","modified_gmt":"2026-04-05T11:26:11","slug":"power-of-attributes-in-erd-diagrams","status":"publish","type":"post","link":"https:\/\/www.we-notes.com\/tw\/power-of-attributes-in-erd-diagrams\/","title":{"rendered":"ER\u5716\u4e2d\u88ab\u5ffd\u8996\u7684\u5c6c\u6027\u529b\u91cf\uff1a\u5b83\u5011\u7684\u91cd\u8981\u6027\u9060\u8d85\u4f60\u7684\u60f3\u50cf"},"content":{"rendered":"<p>\u7576\u67b6\u69cb\u5e2b\u958b\u59cb\u8a2d\u8a08\u8cc7\u6599\u7d50\u69cb\u6642\uff0c\u6ce8\u610f\u529b\u5f80\u5f80\u96c6\u4e2d\u5728\u9023\u63a5\u4e0a\u3002\u6211\u5011\u6703\u7279\u5225\u95dc\u6ce8\u5be6\u9ad4\u53ca\u5176\u76f8\u4e92\u95dc\u806f\u7684\u95dc\u4fc2\u3002\u7dda\u689d\u88ab\u756b\u51fa\uff0c\u9d3f\u5b50\u8173\u88ab\u52a0\u4e0a\uff0c\u4e26\u5b9a\u7fa9\u4e86\u57fa\u6578\u3002\u5f88\u5bb9\u6613\u8a8d\u70ba\u8cc7\u6599\u5eab\u7684\u9aa8\u67b6\u50c5\u7531\u8868\u683c\u4e4b\u9593\u7684\u9023\u7d50\u65b9\u5f0f\u6c7a\u5b9a\u3002\u7136\u800c\uff0c\u9019\u7a2e\u89c0\u9ede\u5ffd\u7565\u4e86\u771f\u6b63\u652f\u6490\u8cc7\u6599\u7684\u57fa\u790e\u69cb\u5efa\u55ae\u5143\uff1a\u5c6c\u6027\u3002<\/p>\n<p>\u5c6c\u6027\u662f\u5132\u5b58\u5728\u5be6\u9ad4\u5167\u90e8\u7684\u7279\u5b9a\u8cc7\u8a0a\u7247\u6bb5\u3002\u5b83\u5011\u5b9a\u7fa9\u4e86\u8cc7\u6599\u672c\u8eab\u7684\u6027\u8cea\uff0c\u800c\u4e0d\u50c5\u50c5\u662f\u8cc7\u6599\u4e4b\u9593\u7684\u95dc\u806f\u65b9\u5f0f\u3002\u96d6\u7136\u95dc\u4fc2\u6c7a\u5b9a\u4e86\u7db2\u8def\u7684\u7d50\u69cb\uff0c\u4f46\u5c6c\u6027\u5247\u6c7a\u5b9a\u4e86\u8a72\u7db2\u8def\u4e2d\u8cc7\u8a0a\u7684\u5b8c\u6574\u6027\u3001\u6548\u80fd\u8207\u53ef\u7528\u6027\u3002\u5ffd\u7565\u5c6c\u6027\u8a2d\u8a08\u7684\u7d30\u7bc0\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u7cfb\u7d71\u96d6\u80fd\u904b\u4f5c\uff0c\u537b\u5728\u64f4\u5c55\u6027\u3001\u8cc7\u6599\u54c1\u8cea\u8207\u67e5\u8a62\u6548\u7387\u65b9\u9762\u8209\u6b65\u7dad\u8271\u3002<\/p>\n<p>\u672c\u6307\u5357\u63a2\u8a0e\u5c6c\u6027\u65bc\u5be6\u9ad4-\u95dc\u4fc2\u5716\uff08ERD\uff09\u4e2d\u6240\u626e\u6f14\u7684\u95dc\u9375\u89d2\u8272\u3002\u6211\u5011\u5c07\u8d85\u8d8a\u57fa\u672c\u5b9a\u7fa9\uff0c\u6df1\u5165\u63a2\u8a0e\u5c6c\u6027\u9078\u64c7\u5982\u4f55\u5f71\u97ff\u8cc7\u6599\u898f\u7bc4\u5316\u3001\u5132\u5b58\u512a\u5316\u4ee5\u53ca\u9577\u671f\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Cute kawaii-style infographic explaining the importance of attributes in ER diagrams, featuring pastel-colored entity characters, five attribute types (simple, composite, multi-valued, derived, key), design best practices checklist, and database modeling tips with rounded vector illustrations\" decoding=\"async\" src=\"https:\/\/www.we-notes.com\/wp-content\/uploads\/2026\/04\/kawaii-er-diagram-attributes-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83d\udee0\ufe0f \u8cc7\u6599\u6a21\u578b\u4e2d\u7684\u5c6c\u6027\u5b9a\u7fa9<\/h2>\n<p>\u5c6c\u6027\u662f\u5be6\u9ad4\u7684\u5c6c\u6027\u6216\u7279\u5fb5\u3002\u5728\u7269\u7406\u8cc7\u6599\u5eab\u4e2d\uff0c\u9019\u5c0d\u61c9\u65bc\u8868\u683c\u5167\u7684\u4e00\u500b\u6b04\u4f4d\u3002\u5728\u6982\u5ff5\u968e\u6bb5\uff0c\u5b83\u662f\u5728ER\u5716\u4e2d\u8207\u5be6\u9ad4\u77e9\u5f62\u76f8\u9023\u7684\u5713\u5f62\u6216\u6a62\u5713\u5f62\u3002\u5be6\u9ad4\u8207\u5c6c\u6027\u4e4b\u9593\u7684\u5340\u5225\u6709\u6642\u6703\u6a21\u7cca\uff0c\u4f46\u7c21\u55ae\u7684\u5224\u65b7\u539f\u5247\u662f\uff1a\u82e5\u8cc7\u6599\u63cf\u8ff0\u5be6\u9ad4\u4e14\u7121\u6cd5\u7368\u7acb\u5b58\u5728\uff0c\u5247\u70ba\u5c6c\u6027\u3002<\/p>\n<p>\u8003\u616e\u4e00\u500b<strong>\u9867\u5ba2<\/strong>\u5be6\u9ad4\u3002\u59d3\u540d\u3001\u5730\u5740\u8207\u51fa\u751f\u65e5\u671f\u90fd\u662f\u5c6c\u6027\u3002\u5b83\u5011\u63cf\u8ff0\u9867\u5ba2\uff0c\u4f46\u4e0d\u50cf\u8a02\u55ae\u6216\u7522\u54c1\u90a3\u6a23\u4f5c\u70ba\u7368\u7acb\u7684\u8a18\u9304\u5b58\u5728\u3002\u7136\u800c\uff0c\u5982\u4f55\u5132\u5b58\u9019\u4e9b\u5c6c\u6027\u7684\u6c7a\u5b9a\uff0c\u6b63\u662f\u8907\u96dc\u6027\u958b\u59cb\u7684\u5730\u65b9\u3002<\/p>\n<h3>\u4f60\u5fc5\u9808\u4e86\u89e3\u7684\u5c6c\u6027\u985e\u578b<\/h3>\n<p>\u4e26\u975e\u6240\u6709\u5c6c\u6027\u90fd\u540c\u7b49\u91cd\u8981\u3002\u4e86\u89e3\u5c6c\u6027\u7684\u5177\u9ad4\u5206\u985e\uff0c\u6709\u52a9\u65bc\u5224\u65b7\u5176\u5132\u5b58\u9700\u6c42\u8207\u9650\u5236\u3002\u4ee5\u4e0b\u662f\u8cc7\u6599\u6a21\u578b\u904e\u7a0b\u4e2d\u5e38\u898b\u5c6c\u6027\u985e\u578b\u7684\u8aaa\u660e\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5c6c\u6027\u985e\u578b<\/th>\n<th>\u63cf\u8ff0<\/th>\n<th>\u7bc4\u4f8b<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u7c21\u55ae\u5c6c\u6027<\/td>\n<td>\u539f\u5b50\u503c\uff1b\u7121\u6cd5\u518d\u9032\u4e00\u6b65\u5206\u5272\u3002<\/td>\n<td>\u5e74\u9f61\u3001\u793e\u6703\u5b89\u5168\u865f\u78bc<\/td>\n<\/tr>\n<tr>\n<td>\u8907\u5408\u5c6c\u6027<\/td>\n<td>\u53ef\u5206\u5272\u70ba\u5b50\u90e8\u5206\u3002<\/td>\n<td>\u5730\u5740\uff08\u8857\u9053\u3001\u57ce\u5e02\u3001\u90f5\u905e\u5340\u865f\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u591a\u503c\u5c6c\u6027<\/td>\n<td>\u53ef\u70ba\u55ae\u4e00\u5be6\u9ad4\u5be6\u4f8b\u5132\u5b58\u591a\u500b\u503c\u3002<\/td>\n<td>\u96fb\u8a71\u865f\u78bc\u3001\u96fb\u5b50\u90f5\u4ef6\u4f4d\u5740<\/td>\n<\/tr>\n<tr>\n<td>\u884d\u751f\u5c6c\u6027<\/td>\n<td>\u7531\u5176\u4ed6\u5c6c\u6027\u8a08\u7b97\u5f97\u51fa\u3002<\/td>\n<td>\u5e74\u9f61\uff08\u7531\u51fa\u751f\u65e5\u671f\u8a08\u7b97\uff09\u3001\u7e3d\u91d1\u984d<\/td>\n<\/tr>\n<tr>\n<td>\u95dc\u9375\u5c6c\u6027<\/td>\n<td>\u552f\u4e00\u8b58\u5225\u5be6\u9ad4\u3002<\/td>\n<td>\u9867\u5ba2\u7de8\u865f\u3001\u8a02\u55ae\u7de8\u865f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u9019\u4e9b\u985e\u578b\u4e2d\u7684\u6bcf\u4e00\u7a2e\u5728\u908f\u8f2f\u8a2d\u8a08\u968e\u6bb5\u90fd\u9700\u8981\u7279\u5225\u8655\u7406\u3002\u82e5\u7121\u6cd5\u5340\u5206\u7c21\u55ae\u5c6c\u6027\u8207\u8907\u5408\u5c6c\u6027\uff0c\u5c07\u5c0e\u81f4\u7d50\u69cb\u50f5\u5316\uff0c\u5f8c\u7e8c\u96e3\u4ee5\u4fee\u6539\u3002\u4f8b\u5982\uff0c\u5c07\u5b8c\u6574\u5730\u5740\u5132\u5b58\u70ba\u55ae\u4e00\u5b57\u4e32\uff0c\u5c07\u96e3\u4ee5\u900f\u904e\u57ce\u5e02\u6216\u90f5\u905e\u5340\u865f\u9032\u884c\u904e\u6ffe\uff0c\u9664\u975e\u9032\u884c\u8907\u96dc\u7684\u5b57\u4e32\u64cd\u4f5c\u3002<\/p>\n<h2>\u2696\ufe0f \u6b21\u8981\u5c6c\u6027\u8a2d\u8a08\u4e0d\u826f\u7684\u96b1\u85cf\u6210\u672c<\/h2>\n<p>\u8a31\u591a\u5718\u968a\u5c07\u5c6c\u6027\u8996\u70ba\u5728\u5efa\u7acb\u95dc\u4fc2\u5f8c\u624d\u586b\u5165\u7684\u5fae\u4e0d\u8db3\u9053\u7684\u7d30\u7bc0\u3002\u9019\u7a2e\u505a\u6cd5\u901a\u5e38\u6703\u5c0e\u81f4\u986f\u8457\u7684\u6280\u8853\u50b5\u52d9\u3002\u7576\u5c6c\u6027\u5b9a\u7fa9\u4e0d\u4f73\u6642\uff0c\u5f8c\u679c\u6703\u6ce2\u53ca\u6574\u500b\u7cfb\u7d71\u3002<\/p>\n<ul>\n<li><strong>\u8cc7\u6599\u5b8c\u6574\u6027\u554f\u984c\uff1a<\/strong> \u5982\u679c\u5c6c\u6027\u5141\u8a31\u7a7a\u503c\u537b\u7f3a\u4e4f\u660e\u78ba\u7684\u696d\u52d9\u908f\u8f2f\uff0c\u5831\u8868\u5c31\u6703\u8b8a\u5f97\u4e0d\u53ef\u9760\u3002\u5982\u679c\u5c6c\u6027\u7f3a\u5c11\u7d04\u675f\uff08\u4f8b\u5982\u6700\u5927\u9577\u5ea6\u6216\u6709\u6548\u7bc4\u570d\uff09\uff0c\u8cc7\u6599\u5eab\u5c31\u6703\u63a5\u53d7\u5783\u573e\u8cc7\u6599\u3002<\/li>\n<li><strong>\u67e5\u8a62\u6548\u80fd\u4e0b\u964d\uff1a<\/strong> \u5728\u6c92\u6709\u7d22\u5f15\u7684\u60c5\u6cc1\u4e0b\u5197\u9918\u5132\u5b58\u884d\u751f\u8cc7\u6599\uff0c\u6703\u5c0e\u81f4\u66f4\u65b0\u901f\u5ea6\u8b8a\u6162\u3002\u76f8\u53cd\u5730\uff0c\u672a\u5c0d\u7d93\u5e38\u67e5\u8a62\u7684\u5c6c\u6027\u5efa\u7acb\u7d22\u5f15\uff0c\u6703\u4f7f\u641c\u5c0b\u64cd\u4f5c\u8b8a\u5f97\u9072\u7de9\u3002<\/li>\n<li><strong>\u898f\u7bc4\u5316\u9055\u53cd\uff1a<\/strong> \u4e0d\u6070\u7576\u5730\u62c6\u5206\u6216\u5408\u4f75\u5c6c\u6027\uff0c\u901a\u5e38\u6703\u5c0e\u81f4\u8cc7\u6599\u63d2\u5165\u3001\u522a\u9664\u6216\u66f4\u65b0\u6642\u51fa\u73fe\u7570\u5e38\u3002<\/li>\n<li><strong>\u53ef\u64f4\u5c55\u6027\u74f6\u9838\uff1a<\/strong> \u7121\u9650\u589e\u9577\u7684\u5c6c\u6027\uff08\u4f8b\u5982\u5c07\u6a19\u7c64\u6e05\u55ae\u5132\u5b58\u5728\u55ae\u4e00\u6587\u5b57\u6b04\u4f4d\u4e2d\uff09\u6703\u963b\u7919\u9ad8\u6548\u80fd\u7684\u8cc7\u6599\u5206\u5272\u8207\u5206\u7247\u7b56\u7565\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e0d\u50c5\u50c5\u662f\u64c1\u6709\u6b63\u78ba\u7684\u6b04\u4f4d\uff0c\u66f4\u5728\u65bc\u64c1\u6709\u6b63\u78ba\u7684\u7d04\u675f\u689d\u4ef6\u8207\u8cc7\u6599\u985e\u578b\u3002\u4e00\u500b<code>varchar<\/code>\u6b04\u4f4d\u7528\u65bc\u5132\u5b58\u96fb\u8a71\u865f\u78bc\uff0c\u5176\u6548\u7387\u8207\u6e96\u78ba\u6027\u90fd\u4f4e\u65bc\u80fd\u9a57\u8b49\u8f38\u5165\u7684\u7279\u5b9a\u6574\u6578\u6216\u683c\u5f0f\u5316\u5b57\u4e32\u985e\u578b\u3002<\/p>\n<h2>\ud83d\udd0d \u6df1\u5165\u63a2\u8a0e\uff1a\u5c6c\u6027\u8a2d\u8a08\u6a21\u5f0f<\/h2>\n<p>\u70ba\u4e86\u5efa\u7acb\u7a69\u5065\u7684\u7cfb\u7d71\uff0c\u8a2d\u8a08\u8005\u5728\u5b9a\u7fa9\u5c6c\u6027\u6642\u61c9\u61c9\u7528\u7279\u5b9a\u7684\u8a2d\u8a08\u6a21\u5f0f\u3002\u9019\u4e9b\u6a21\u5f0f\u80fd\u78ba\u4fdd\u8cc7\u6599\u6a21\u578b\u4e2d\u7684\u4e00\u81f4\u6027\u8207\u6e05\u6670\u5ea6\u3002<\/p>\n<h3>1. \u539f\u5b50\u6027\u8207\u7b2c\u4e00\u7bc4\u5f0f<\/h3>\n<p>\u5c6c\u6027\u8a2d\u8a08\u7684\u7b2c\u4e00\u689d\u539f\u5247\u662f\u539f\u5b50\u6027\u3002\u6bcf\u500b\u5c6c\u6027\u90fd\u61c9\u50c5\u5132\u5b58\u55ae\u4e00\u3001\u4e0d\u53ef\u5206\u5272\u7684\u503c\u3002\u907f\u514d\u5728\u4e00\u500b\u55ae\u5143\u683c\u4e2d\u5132\u5b58\u591a\u500b\u503c\u3002<\/p>\n<ul>\n<li><strong>\u4e0d\u826f\u505a\u6cd5\uff1a<\/strong>\u4e00\u500b<code>skills<\/code>\u6b04\u4f4d\u5305\u542b\u300cSQL\u3001Python\u3001Java\u300d\u3002<\/li>\n<li><strong>\u826f\u597d\u505a\u6cd5\uff1a<\/strong>\u4e00\u500b\u7368\u7acb\u7684\u95dc\u806f\u8868\u683c\uff0c\u9023\u7d50<strong>Employee<\/strong>\u8207<strong>Skill<\/strong>.<\/li>\n<\/ul>\n<p>\u9055\u53cd\u539f\u5b50\u6027\u6703\u4f7f\u67e5\u8a62\u8b8a\u5f97\u8907\u96dc\u3002\u82e5\u4e0d\u89e3\u6790\u5b57\u4e32\uff0c\u5c31\u7121\u6cd5\u8f15\u6613\u7d71\u8a08\u6709\u591a\u5c11\u54e1\u5de5\u61c2\u300cPython\u300d\u3002\u4fdd\u6301\u5c6c\u6027\u7684\u539f\u5b50\u6027\uff0c\u80fd\u7c21\u5316\u8cc7\u6599\u6aa2\u7d22\u8207\u805a\u5408\u6240\u9700\u7684\u908f\u8f2f\u3002<\/p>\n<h3>2. \u547d\u540d\u6163\u4f8b\u8207\u6e05\u6670\u6027<\/h3>\n<p>\u5c6c\u6027\u540d\u7a31\u5fc5\u9808\u5177\u6709\u81ea\u660e\u6027\u3002\u6a21\u7cca\u4e0d\u6e05\u662f\u53ef\u7dad\u8b77\u6027\u7684\u6575\u4eba\u3002\u907f\u514d\u4f7f\u7528\u672a\u4f86\u958b\u767c\u8005\u53ef\u80fd\u7121\u6cd5\u7406\u89e3\u7684\u7e2e\u5beb\u3002\u5c6c\u6027\u61c9\u4f7f\u7528\u55ae\u6578\u540d\u8a5e\uff0c\u4ee5\u53cd\u6620\u5176\u63cf\u8ff0\u7684\u662f\u5be6\u9ad4\u7684\u55ae\u4e00\u5c6c\u6027\u3002<\/p>\n<ul>\n<li><strong>\u6a21\u7cca\u7684\uff1a<\/strong> <code>\u65e5\u671f<\/code> \u6216 <code>\u503c<\/code>.<\/li>\n<li><strong>\u660e\u78ba\u7684\uff1a<\/strong> <code>\u51fa\u751f\u65e5\u671f<\/code> \u6216 <code>\u4ea4\u6613\u91d1\u984d<\/code>.<\/li>\n<\/ul>\n<p>\u547d\u540d\u7684\u4e00\u81f4\u6027\u4e5f\u6709\u52a9\u65bc\u81ea\u52d5\u5316\u5de5\u5177\u7522\u751f\u6587\u4ef6\u548c\u7a0b\u5f0f\u78bc\u3002\u5982\u679c\u6a21\u578b\u5728\u5404\u8655\u90fd\u4f7f\u7528 <code>\u5efa\u7acb\u6642\u9593<\/code>\uff0c\u5247\u7522\u751f\u7684 SQL \u67e5\u8a62\u4e5f\u6703\u9075\u5faa\u6b64\u6a21\u5f0f\uff0c\u5f9e\u800c\u964d\u4f4e\u5de5\u7a0b\u5718\u968a\u7684\u8a8d\u77e5\u8ca0\u64d4\u3002<\/p>\n<h3>3. \u7a7a\u503c\u8655\u7406<\/h3>\n<p>\u6bcf\u500b\u5c6c\u6027\u90fd\u5fc5\u9808\u6709\u660e\u78ba\u7684\u7a7a\u503c\u898f\u5247\u3002\u5728\u8a31\u591a\u7cfb\u7d71\u4e2d\uff0c<code>NULL<\/code>\u8207\u7a7a\u5b57\u4e32\u6216\u96f6\u7684\u8655\u7406\u65b9\u5f0f\u4e0d\u540c\u3002\u662f\u5426\u5141\u8a31\u5c6c\u6027\u70ba\u7a7a\uff0c\u61c9\u57fa\u65bc\u696d\u52d9\u908f\u8f2f\u4f86\u6c7a\u5b9a\u3002<\/p>\n<ul>\n<li><strong>\u5fc5\u8981\u5c6c\u6027\uff1a<\/strong> \u5982\u679c\u4e00\u500b<strong>\u9867\u5ba2<\/strong>\u6c92\u6709\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u5c31\u7121\u6cd5\u5b58\u5728\uff0c\u5247\u8a72\u5c6c\u6027\u61c9\u8a2d\u5b9a\u70ba<code>NOT NULL<\/code>.<\/li>\n<li><strong>\u9078\u64c7\u6027\u5c6c\u6027\uff1a<\/strong> \u5982\u679c\u4e00\u500b<strong>\u7522\u54c1<\/strong>\u53ef\u80fd\u6c92\u6709\u4e2d\u9593\u540d\uff0c\u5247\u8a72\u5c6c\u6027\u61c9\u5141\u8a31<code>NULL<\/code>.<\/li>\n<\/ul>\n<p>\u904e\u5ea6\u4f7f\u7528<code>NULL<\/code> \u53ef\u80fd\u5c0e\u81f4 SQL \u67e5\u8a62\u4e2d\u7684\u4e09\u503c\u908f\u8f2f\u932f\u8aa4\uff08\u5176\u4e2d <code>NULL = NULL<\/code> \u70ba\u5047\uff09\u3002\u5728\u8a2d\u8a08\u968e\u6bb5\u660e\u78ba\u8655\u7406 NULL \u503c\u53ef\u907f\u514d\u9019\u4e9b\u908f\u8f2f\u9677\u9631\u3002<\/p>\n<h2>\ud83e\udde9 \u5c6c\u6027\u8207\u95dc\u4fc2\uff1a\u5c0b\u627e\u5e73\u8861\u9ede<\/h2>\n<p>\u7d93\u5e38\u6703\u5c31\u4f55\u6642\u505c\u6b62\u589e\u52a0\u5c6c\u6027\u4e26\u958b\u59cb\u5275\u5efa\u65b0\u5be6\u9ad4\u5c55\u958b\u8a0e\u8ad6\u3002\u9019\u5c31\u662f\u7d93\u5178\u7684\u300c\u5c6c\u6027\u5c0d\u5be6\u9ad4\u300d\u56f0\u5883\u3002\u9019\u500b\u6c7a\u5b9a\u53d6\u6c7a\u65bc\u95dc\u4fc2\u7684\u57fa\u6578\u3002<\/p>\n<p>\u5982\u679c\u4e00\u500b\u5c6c\u6027\u80fd\u5920\u7368\u7acb\u5b58\u5728\uff0c\u6216\u64c1\u6709\u81ea\u5df1\u7684\u4e00\u7d44\u5c6c\u6027\uff0c\u90a3\u9ebc\u5b83\u5f88\u53ef\u80fd\u61c9\u8a72\u662f\u4e00\u500b\u5be6\u9ad4\u3002\u5982\u679c\u5b83\u50c5\u662f\u63cf\u8ff0\u6027\u7684\u4e14\u4f9d\u8cf4\u65bc\u7236\u5be6\u9ad4\uff0c\u5247\u61c9\u4fdd\u6301\u70ba\u5c6c\u6027\u3002<\/p>\n<ul>\n<li><strong>\u60c5\u5883 A\uff1a<\/strong> \u4e00\u9580 <strong> \u8eca <\/strong> \u64c1\u6709 <code> \u984f\u8272 <\/code> \u5c6c\u6027\u3002\u9019\u53ea\u662f\u63cf\u8ff0\u6027\u7684\u3002\u5b83\u672c\u8eab\u6c92\u6709\u7368\u7acb\u7684\u751f\u547d\u3002<\/li>\n<li><strong>\u60c5\u5883 B\uff1a<\/strong> \u4e00\u9580 <strong> \u8eca <\/strong> \u64c1\u6709\u4e00\u500b <code> \u6240\u6709\u4eba <\/code>\u3002\u6240\u6709\u4eba\u662f\u64c1\u6709\u81ea\u5df1\u5c6c\u6027\uff08\u59d3\u540d\u3001\u5730\u5740\uff09\u7684\u4eba\u3002\u9019\u662f\u4e00\u7a2e\u8207\u5be6\u9ad4\u7684\u95dc\u4fc2\uff0c\u800c\u975e\u5c6c\u6027\u3002<\/li>\n<li><strong>\u60c5\u5883 C\uff1a<\/strong> \u4e00\u9580 <strong> \u8ab2\u7a0b <\/strong> \u64c1\u6709 <code> \u4e3b\u984c <\/code>\u3002\u5982\u679c\u4e3b\u984c\u662f\u6a19\u6e96\u7684\uff08\u6578\u5b78\u3001\u79d1\u5b78\uff09\uff0c\u5b83\u5011\u53ef\u4ee5\u662f\u5c6c\u6027\u3002\u5982\u679c\u4e3b\u984c\u8f03\u70ba\u8907\u96dc\uff08\u5177\u6709\u63cf\u8ff0\u3001\u96e3\u5ea6\u7b49\u7d1a\uff09\uff0c\u5247\u61c9\u4f5c\u70ba\u5be6\u9ad4\u3002<\/li>\n<\/ul>\n<p>\u82e5\u672a\u80fd\u638c\u63e1\u6b64\u5e73\u8861\uff0c\u5c07\u5c0e\u81f4\u8cc7\u6599\u8868\u904e\u5ea6\u975e\u898f\u7bc4\u5316\uff0c\u6216\u6a21\u578b\u7121\u8b02\u5730\u788e\u7247\u5316\u3002\u76ee\u6a19\u662f\u5728\u4e0d\u5f15\u5165\u696d\u52d9\u908f\u8f2f\u4e0d\u9700\u8981\u7684\u8907\u96dc\u6027\u7684\u524d\u63d0\u4e0b\uff0c\u6355\u6349\u5fc5\u8981\u7684\u7d30\u7bc0\u3002<\/p>\n<h2>\ud83d\udcc9 \u5c0d\u898f\u7bc4\u5316\u7684\u5f71\u97ff<\/h2>\n<p>\u898f\u7bc4\u5316\u662f\u7d44\u7e54\u8cc7\u6599\u4ee5\u6e1b\u5c11\u5197\u9918\u7684\u904e\u7a0b\u3002\u5c6c\u6027\u662f\u5728\u6b64\u904e\u7a0b\u4e2d\u88ab\u79fb\u52d5\u7684\u4e3b\u8981\u55ae\u5143\u3002\u7406\u89e3\u5c6c\u6027\u884c\u70ba\u5c0d\u65bc\u9054\u5230\u7b2c\u4e09\u7bc4\u5f0f\uff083NF\uff09\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h3>\u50b3\u905e\u4f9d\u8cf4<\/h3>\n<p>\u7576\u4e00\u500b\u975e\u9375\u5c6c\u6027\u4f9d\u8cf4\u65bc\u53e6\u4e00\u500b\u975e\u9375\u5c6c\u6027\u6642\uff0c\u5c31\u6703\u767c\u751f\u50b3\u905e\u4f9d\u8cf4\u3002\u9019\u662f\u5728\u5c6c\u6027\u8a2d\u8a08\u4e2d\u5e38\u898b\u7684\u9677\u9631\u3002<\/p>\n<p>\u60f3\u50cf\u4e00\u500b<strong>\u8a02\u55ae<\/strong>\u8cc7\u6599\u8868\uff0c\u5176\u4e2d\u5305\u542b<code>\u8a02\u55ae\u7de8\u865f<\/code>, <code>\u9867\u5ba2\u7de8\u865f<\/code>, <code>\u9867\u5ba2\u59d3\u540d<\/code>\uff0c\u4ee5\u53ca<code>\u9867\u5ba2\u5730\u5740<\/code>.<\/p>\n<ul>\n<li><code>\u9867\u5ba2\u59d3\u540d<\/code>\u53d6\u6c7a\u65bc<code>\u9867\u5ba2\u7de8\u865f<\/code>.<\/li>\n<li><code>\u9867\u5ba2\u5730\u5740<\/code>\u53d6\u6c7a\u65bc<code>\u9867\u5ba2\u7de8\u865f<\/code>.<\/li>\n<li><code>\u9867\u5ba2\u59d3\u540d<\/code>\u4e0d\u53d6\u6c7a\u65bc<code>\u8a02\u55ae\u7de8\u865f<\/code>.<\/li>\n<\/ul>\n<p>\u5728\u6b64\uff0c<code>\u9867\u5ba2\u5730\u5740<\/code>\u900f\u904e<code>\u8a02\u55ae\u7de8\u865f<\/code>\u9867\u5ba2\u7de8\u865f<code>\u9867\u5ba2\u7de8\u865f<\/code>\u3002\u70ba\u4e86\u898f\u7bc4\u5316\uff0c\u60a8\u5fc5\u9808\u5c07\u9867\u5ba2\u5c6c\u6027\u79fb\u81f3\u4e00\u500b\u7368\u7acb\u7684<strong>\u5ba2\u6236<\/strong> \u8868\u3002\u9019\u53ef\u4ee5\u6e1b\u5c11\u5132\u5b58\u7a7a\u9593\uff0c\u4e26\u78ba\u4fdd\u5982\u679c\u5ba2\u6236\u642c\u9077\uff0c\u60a8\u53ea\u9700\u66f4\u65b0\u4e00\u7b46\u8a18\u9304\u3002<\/p>\n<h3>\u51fd\u6578\u4f9d\u8cf4\u6027<\/h3>\n<p>\u6bcf\u500b\u5c6c\u6027\u90fd\u5fc5\u9808\u660e\u78ba\u5730\u4f9d\u8cf4\u65bc\u4e3b\u9375\u3002\u5982\u679c\u60a8\u7121\u6cd5\u78ba\u5b9a\u662f\u54ea\u500b\u9375\u6c7a\u5b9a\u5c6c\u6027\u7684\u503c\uff0c\u90a3\u9ebc\u8a72\u5c6c\u6027\u5c31\u4e0d\u61c9\u653e\u5728\u8a72\u8868\u4e2d\u3002\u6b64\u6aa2\u67e5\u5c0d\u65bc\u8cc7\u6599\u5b8c\u6574\u6027\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p><strong>\u898f\u5247\uff1a<\/strong> \u6240\u6709\u975e\u9375\u5c6c\u6027\u90fd\u5fc5\u9808\u63d0\u4f9b\u95dc\u65bc\u9375\u3001\u6574\u500b\u9375\uff0c\u4ee5\u53ca\u50c5\u50c5\u9375\u7684\u8cc7\u8a0a\u3002<\/p>\n<h2>\ud83d\udeab \u61c9\u907f\u514d\u7684\u5e38\u898b\u9677\u9631<\/h2>\n<p>\u5373\u4f7f\u7d93\u9a57\u8c50\u5bcc\u7684\u8a2d\u8a08\u5e2b\u5728\u5b9a\u7fa9\u5c6c\u6027\u6642\u4e5f\u53ef\u80fd\u9677\u5165\u9677\u9631\u3002\u4ee5\u4e0b\u662f\u5e38\u898b\u932f\u8aa4\u53ca\u5176\u9810\u9632\u65b9\u6cd5\u3002<\/p>\n<h3>1. \u5132\u5b58\u884d\u751f\u8cc7\u6599<\/h3>\n<p>\u70ba\u4e86\u5728\u67e5\u8a62\u6642\u7bc0\u7701\u904b\u7b97\u6642\u9593\uff0c\u5132\u5b58\u8a08\u7b97\u503c\u7684\u8a98\u60d1\u5f88\u5f37\u3002\u4f8b\u5982\uff0c\u5c07 <code>\u7e3d\u91d1\u984d<\/code> \u5132\u5b58\u5728\u8a02\u55ae\u8868\u4e2d\uff0c\u800c\u4e0d\u662f\u5f9e <code>\u660e\u7d30\u9805\u76ee<\/code>.<\/p>\n<ul>\n<li><strong>\u98a8\u96aa\uff1a<\/strong> \u8cc7\u6599\u4e0d\u4e00\u81f4\u3002\u5982\u679c\u9805\u76ee\u50f9\u683c\u8b8a\u52d5\uff0c\u6b77\u53f2\u8a02\u55ae\u7e3d\u984d\u5c31\u6703\u932f\u8aa4\uff0c\u9664\u975e\u60a8\u540c\u6642\u66f4\u65b0\u7e3d\u91d1\u984d\u6b04\u4f4d\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6848\uff1a<\/strong> \u50c5\u5132\u5b58\u57fa\u672c\u8cc7\u6599\u3002\u5728\u67e5\u8a62\u6642\u6216\u61c9\u7528\u7a0b\u5f0f\u5c64\u8a08\u7b97\u884d\u751f\u503c\u3002<\/li>\n<\/ul>\n<h3>2. \u5ffd\u7565\u8cc7\u6599\u985e\u578b<\/h3>\n<p>\u5c0d\u6240\u6709\u5167\u5bb9\u90fd\u4f7f\u7528\u901a\u7528\u7684\u5b57\u4e32\u985e\u578b\u662f\u4e00\u7a2e\u7bc0\u7701\u6642\u9593\u7684\u5feb\u901f\u65b9\u6cd5\uff0c\u4f46\u6703\u5e36\u4f86\u5f8c\u7e8c\u554f\u984c\u3002\u4ee5\u5b57\u4e32\u5132\u5b58\u7684\u65e5\u671f\u7121\u6cd5\u6709\u6548\u6392\u5e8f\u6216\u7be9\u9078\u3002\u4ee5\u5b57\u4e32\u5132\u5b58\u7684\u6578\u5b57\u6703\u963b\u6b62\u6578\u5b78\u904b\u7b97\u3002<\/p>\n<ul>\n<li><strong>\u6700\u4f73\u5be6\u52d9\uff1a<\/strong> \u9078\u64c7\u7b26\u5408\u9818\u57df\u7684\u7279\u5b9a\u8cc7\u6599\u985e\u578b\u3002\u4f9d\u60c5\u6cc1\u4f7f\u7528 <code>DATE<\/code>, <code>INT<\/code>, <code>DECIMAL<\/code>\uff0c\u6216 <code>BLOB<\/code> \u7b49\u9069\u7576\u7684\u985e\u578b\u3002<\/li>\n<\/ul>\n<h3>3. \u5ffd\u7565\u5b57\u5143\u96c6<\/h3>\n<p>\u6587\u5b57\u5c6c\u6027\u9700\u8981\u5b9a\u7fa9\u660e\u78ba\u7684\u5b57\u5143\u96c6\u3002\u5982\u679c\u4f60\u5047\u8a2d\u4f7f\u7528 ASCII\uff0c\u4f46\u537b\u6536\u5230 UTF-8 \u8f38\u5165\uff0c\u5c31\u6703\u907a\u5931\u7279\u6b8a\u5b57\u5143\u3002\u9019\u5c0d\u5168\u7403\u61c9\u7528\u7a0b\u5f0f\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<ul>\n<li><strong>\u6aa2\u67e5\uff1a<\/strong>\u78ba\u4fdd\u8cc7\u6599\u5eab\u652f\u63f4\u76ee\u6a19\u4f7f\u7528\u8005\u6240\u9700\u7684\u6392\u5e8f\u898f\u5247\u548c\u5b57\u5143\u7de8\u78bc\u3002<\/li>\n<\/ul>\n<h2>\ud83d\ude80 \u5c6c\u6027\u7684\u6548\u80fd\u5f71\u97ff<\/h2>\n<p>\u5c6c\u6027\u76f4\u63a5\u5f71\u97ff\u8cc7\u6599\u5eab\u5f15\u64ce\u5b58\u53d6\u8207\u5132\u5b58\u8cc7\u6599\u7684\u65b9\u5f0f\u3002\u5c6c\u6027\u7684\u5be6\u969b\u5be6\u4f5c\u6703\u5f71\u97ff\u6548\u80fd\u6307\u6a19\u3002<\/p>\n<h3>\u7d22\u5f15\u7b56\u7565<\/h3>\n<p>\u4e26\u975e\u6240\u6709\u5c6c\u6027\u90fd\u61c9\u5efa\u7acb\u7d22\u5f15\u3002\u7d22\u5f15\u6703\u589e\u52a0\u5beb\u5165\u4f5c\u696d\uff08INSERT\u3001UPDATE\u3001DELETE\uff09\u7684\u8ca0\u64d4\uff0c\u4f46\u80fd\u52a0\u5feb\u8b80\u53d6\u4f5c\u696d\uff08SELECT\uff09\u7684\u901f\u5ea6\u3002<\/p>\n<ul>\n<li><strong>\u9ad8\u57fa\u6578\uff1a<\/strong>\u5177\u6709\u8a31\u591a\u552f\u4e00\u503c\u7684\u5c6c\u6027\uff08\u4f8b\u5982\u96fb\u5b50\u90f5\u4ef6\uff09\u662f\u5efa\u7acb\u7d22\u5f15\u7684\u826f\u597d\u5019\u9078\u3002<\/li>\n<li><strong>\u4f4e\u57fa\u6578\uff1a<\/strong>\u5177\u6709\u5c11\u91cf\u552f\u4e00\u503c\u7684\u5c6c\u6027\uff08\u4f8b\u5982\u6027\u5225\u6216\u72c0\u614b\uff09\u901a\u5e38\u4e0d\u9069\u5408\u5efa\u7acb\u7d22\u5f15\uff0c\u9664\u975e\u7528\u65bc\u7279\u5b9a\u7684\u7be9\u9078\u7d44\u5408\u4e2d\u3002<\/li>\n<\/ul>\n<h3>\u5132\u5b58\u6548\u7387<\/h3>\n<p>\u8207\u56fa\u5b9a\u9577\u5ea6\u5c6c\u6027\u76f8\u6bd4\uff0c\u53ef\u8b8a\u9577\u5ea6\u5c6c\u6027\u53ef\u4ee5\u7bc0\u7701\u7a7a\u9593\uff0c\u4f46\u53ef\u80fd\u6703\u5c0e\u81f4\u788e\u7247\u5316\u3002\u4e86\u89e3\u5132\u5b58\u5f15\u64ce\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<ul>\n<li><strong>\u56fa\u5b9a\u9577\u5ea6\uff1a<\/strong>\u8b80\u53d6\u901f\u5ea6\u66f4\u5feb\uff0c\u4f46\u5982\u679c\u8cc7\u6599\u8f03\u77ed\u5247\u6703\u6d6a\u8cbb\u7a7a\u9593\u3002<\/li>\n<li><strong>\u53ef\u8b8a\u9577\u5ea6\uff1a<\/strong>\u7bc0\u7701\u7a7a\u9593\uff0c\u7531\u65bc\u5143\u8cc7\u6599\u958b\u92b7\uff0c\u8b80\u53d6\u901f\u5ea6\u7565\u6162\u3002<\/li>\n<\/ul>\n<h2>\u2705 \u5c6c\u6027\u8a2d\u8a08\u6aa2\u67e5\u6e05\u55ae<\/h2>\n<p>\u5728\u6700\u7d42\u78ba\u5b9a\u4f60\u7684\u5be6\u9ad4\u95dc\u4fc2\u5716\u4e4b\u524d\uff0c\u8acb\u9010\u4e00\u6aa2\u8996\u6b64\u6aa2\u67e5\u6e05\u55ae\uff0c\u4ee5\u78ba\u4fdd\u4f60\u7684\u5c6c\u6027\u5177\u5099\u7a69\u5065\u6027\u3002<\/p>\n<ul>\n<li>\u2611\ufe0f \u6bcf\u500b\u5c6c\u6027\u662f\u5426\u90fd\u662f\u539f\u5b50\u7684\uff08\u55ae\u4e00\u6b04\u4f4d\u4e2d\u7121\u6e05\u55ae\uff09\uff1f<\/li>\n<li>\u2611\ufe0f \u6bcf\u500b\u5c6c\u6027\u662f\u5426\u90fd\u6709\u7368\u7279\u4e14\u5177\u63cf\u8ff0\u6027\u7684\u540d\u7a31\uff1f<\/li>\n<li>\u2611\ufe0f \u8cc7\u6599\u985e\u578b\u662f\u5426\u9069\u5408\u9810\u671f\u7684\u503c\uff1f<\/li>\n<li>\u2611\ufe0f \u6240\u6709\u6b04\u4f4d\u662f\u5426\u90fd\u5df2\u5b9a\u7fa9\u53ef\u70ba\u7a7a\u7684\u9650\u5236\uff1f<\/li>\n<li>\u2611\ufe0f \u662f\u5426\u5df2\u79fb\u9664\u884d\u751f\u5c6c\u6027\uff0c\u6539\u4ee5\u8a08\u7b97\u65b9\u5f0f\u8655\u7406\uff1f<\/li>\n<li>\u2611\ufe0f \u662f\u5426\u6709\u4efb\u4f55\u5c6c\u6027\u9055\u53cd\u898f\u7bc4\u5316\u898f\u5247\uff1f<\/li>\n<li>\u2611\ufe0f \u5132\u5b58\u7a7a\u9593\u5927\u5c0f\u662f\u5426\u91dd\u5c0d\u9810\u671f\u7684\u8cc7\u6599\u91cf\u9032\u884c\u6700\u4f73\u5316\uff1f<\/li>\n<li>\u2611\ufe0f \u5916\u9375\u662f\u5426\u6b63\u78ba\u9023\u7d50\u81f3\u7236\u5c6c\u6027\uff1f<\/li>\n<\/ul>\n<p>\u9075\u5faa\u6b64\u6e05\u55ae\u53ef\u78ba\u4fdd\u4f60\u7684\u8cc7\u6599\u6a21\u578b\u57fa\u790e\u7a69\u56fa\u3002\u9019\u80fd\u5c07\u7126\u9ede\u5f9e\u300c\u73fe\u5728\u662f\u5426\u904b\u4f5c\u300d\u8f49\u79fb\u5230\u300c\u672a\u4f86\u591a\u5e74\u662f\u5426\u4ecd\u80fd\u904b\u4f5c\u300d\u3002<\/p>\n<h2>\ud83d\udd17 \u8907\u96dc\u7cfb\u7d71\u4e2d\u5c6c\u6027\u7684\u76f8\u4e92\u4f5c\u7528<\/h2>\n<p>\u5728\u8907\u96dc\u7cfb\u7d71\u4e2d\uff0c\u5c6c\u6027\u901a\u5e38\u6703\u8de8\u8d8a\u591a\u500b\u4e0a\u4e0b\u6587\u3002\u8003\u616e\u4e00\u500b\u5be9\u8a08\u8ffd\u8e64\u3002\u60a8\u53ef\u80fd\u9700\u8981\u4e00\u500b\u5c6c\u6027\u4f86\u8ffd\u8e64\u662f\u8ab0\u66f4\u6539\u4e86\u8a18\u9304\u4ee5\u53ca\u4f55\u6642\u66f4\u6539\u3002\u9019\u901a\u5e38\u88ab\u5be6\u73fe\u70ba\u6bcf\u500b\u8868\u683c\u4e0a\u7684\u5c6c\u6027\u96c6\u5408\uff08<code>\u5efa\u7acb\u8005<\/code>, <code>\u5efa\u7acb\u6642\u9593<\/code>, <code>\u66f4\u65b0\u8005<\/code>, 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