{"id":1711,"date":"2026-04-11T23:27:53","date_gmt":"2026-04-11T23:27:53","guid":{"rendered":"https:\/\/www.viz-note.com\/tw\/myth-busting-one-to-many-relationships-erd\/"},"modified":"2026-04-11T23:27:53","modified_gmt":"2026-04-11T23:27:53","slug":"myth-busting-one-to-many-relationships-erd","status":"publish","type":"post","link":"https:\/\/www.viz-note.com\/tw\/myth-busting-one-to-many-relationships-erd\/","title":{"rendered":"\u7834\u89e3\u5be6\u9ad4\u95dc\u4fc2\u5716\u4e2d\u4e00\u5c0d\u591a\u95dc\u4fc2\u7684\u5e38\u898b\u8aa4\u89e3"},"content":{"rendered":"<p>\u5be6\u9ad4\u95dc\u4fc2\u5716\uff08ERD\uff09\u662f\u8cc7\u6599\u5eab\u67b6\u69cb\u7684\u57fa\u790e\u85cd\u5716\u3002\u5b83\u5011\u5c07\u62bd\u8c61\u7684\u5546\u696d\u908f\u8f2f\u8f49\u63db\u70ba\u7cfb\u7d71\u53ef\u8655\u7406\u7684\u7d50\u69cb\u5316\u8cc7\u6599\u6a21\u578b\u3002\u5728\u9019\u500b\u9818\u57df\u4e2d\uff0c\u4e00\u5c0d\u591a\u95dc\u4fc2\u662f\u6700\u5e38\u898b\u7684\u7d50\u69cb\u6a21\u5f0f\u3002\u7136\u800c\uff0c\u95dc\u65bc\u5176\u5be6\u65bd\u65b9\u5f0f\u3001\u57fa\u6578\u4ee5\u53ca\u6548\u80fd\u5f71\u97ff\uff0c\u5b58\u5728\u5ee3\u6cdb\u7684\u8aa4\u89e3\u3002\u7406\u89e3\u9019\u4e9b\u9023\u63a5\u7684\u7d30\u7bc0\u5c0d\u65bc\u5efa\u7acb\u7a69\u5065\u4e14\u53ef\u64f4\u5c55\u7684\u8cc7\u6599\u6a21\u578b\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u8a31\u591a\u5be6\u52d9\u5de5\u4f5c\u8005\u5728\u9032\u884c\u8cc7\u6599\u6a21\u578b\u8a2d\u8a08\u6642\uff0c\u5f80\u5f80\u5e36\u8457\u5f9e\u7c21\u5316\u6559\u5b78\u6216\u904e\u6642\u505a\u6cd5\u4e2d\u884d\u751f\u51fa\u7684\u5148\u5165\u70ba\u4e3b\u89c0\u5ff5\u3002\u9019\u4e9b\u5047\u8a2d\u7d93\u5e38\u5c0e\u81f4\u6548\u7387\u4f4e\u4e0b\u3001\u8cc7\u6599\u5b8c\u6574\u6027\u554f\u984c\uff0c\u6216\u5728\u5c08\u6848\u751f\u547d\u9031\u671f\u5f8c\u671f\u51fa\u73fe\u96e3\u4ee5\u7dad\u8b77\u7684\u60c5\u6cc1\u3002\u672c\u6307\u5357\u5256\u6790\u4e86\u4e00\u5c0d\u591a\u95dc\u4fc2\u5e38\u898b\u7684\u8ff7\u601d\u3002\u6211\u5011\u63a2\u8a0e\u57fa\u6578\u3001\u5916\u9375\u8207\u6b63\u898f\u5316\u7684\u6280\u8853\u73fe\u5be6\uff0c\u800c\u4e0d\u4f9d\u8cf4\u7279\u5b9a\u8edf\u9ad4\u5ee0\u5546\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Hand-drawn infographic debunking 5 common myths about one-to-many relationships in Entity Relationship Diagrams (ERDs): illustrates core concepts of parent\/child entities and cardinality, clarifies misconceptions about hierarchy dependency, foreign key uniqueness, relationship evolution, performance impact, and many-to-many confusion, plus best practices for naming conventions, referential integrity, normalization, indexing strategies, and soft delete handling for database architects and developers\" decoding=\"async\" src=\"https:\/\/www.viz-note.com\/wp-content\/uploads\/2026\/04\/one-to-many-erd-relationships-myths-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83e\uddd0 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1\uff1a\u4e00\u5c0d\u591a\u95dc\u4fc2\u7e3d\u662f\u6697\u793a\u56b4\u683c\u7684\u5c64\u7d1a\u7d50\u69cb<\/h2>\n<p>\u4e00\u7a2e\u5e38\u898b\u7684\u5047\u8a2d\u8a8d\u70ba\uff0c\u4e00\u5c0d\u591a\u95dc\u4fc2\u56b4\u683c\u898f\u5b9a\u4e86\u4e00\u7a2e\u7236-\u5b50\u5c64\u7d1a\u7d50\u69cb\uff0c\u5176\u4e2d\u7236\u5be6\u9ad4\u63a7\u5236\u5b50\u5be6\u9ad4\u7684\u5b58\u5728\u3002\u96d6\u7136\u5728\u67d0\u4e9b\u7279\u5b9a\u5546\u696d\u898f\u5247\u4e2d\u6210\u7acb\uff0c\u4f46\u9019\u4e26\u975e\u8cc7\u6599\u5eab\u8a2d\u8a08\u7684\u666e\u904d\u6cd5\u5247\u3002<\/p>\n<h3>\ud83d\udd0d 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\u7121\u6cd5\u5728\u6c92\u6709<em>\u8a02\u55ae<\/em>\u7684\u60c5\u6cc1\u4e0b\u5b58\u5728\u3002\u8a02\u55ae\u9805\u76ee\u8cc7\u6599\u8868\u53ef\u80fd\u5c07\u8a02\u55aeID\u4f5c\u70ba\u5176\u4e3b\u9375\u7684\u4e00\u90e8\u5206\u3002<\/li>\n<\/ul>\n<p>\u5728\u4e0d\u5b58\u5728\u56b4\u683c\u5c64\u7d1a\u7d50\u69cb\u6642\u5047\u8a2d\u5176\u5b58\u5728\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u4e0d\u5fc5\u8981\u7684\u7d04\u675f\u3002\u4f8b\u5982\uff0c\u5728\u975e\u4f9d\u8cf4\u95dc\u4fc2\u4e0a\u5f37\u5236\u57f7\u884c<code>\u7d1a\u806f\u522a\u9664<\/code>\u53ef\u80fd\u6703\u7121\u610f\u4e2d\u522a\u9664\u6709\u6548\u7684\u8cc7\u6599\u3002\u5728\u61c9\u7528\u56b4\u683c\u7684\u53c3\u8003\u5b8c\u6574\u6027\u7d04\u675f\u4e4b\u524d\uff0c\u52d9\u5fc5\u78ba\u8a8d\u696d\u52d9\u898f\u5247\u3002<\/p>\n<h2>\u274c \u4e8b\u5be6\u8b2c\u8aa4 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\u8ff7\u601d 3\uff1a\u95dc\u4fc2\u662f\u975c\u614b\u7684<\/h2>\n<p>\u8a31\u591a\u8a2d\u8a08\u5e2b\u8a8d\u70ba\uff0c\u4e00\u65e6\u5728\u5716\u8868\u4e2d\u5b9a\u7fa9\u4e86\u4e00\u5c0d\u591a\u7684\u95dc\u4fc2\uff0c\u5b83\u5c31\u6703\u6c38\u9060\u4e0d\u8b8a\u3002\u7136\u800c\uff0c\u8cc7\u6599\u6a21\u578b\u5fc5\u9808\u96a8\u8457\u696d\u52d9\u767c\u5c55\u800c\u6f14\u9032\u3002\u5047\u8a2d\u95dc\u4fc2\u662f\u975c\u614b\u7684\uff0c\u5ffd\u7565\u4e86\u8cc7\u6599\u7684\u52d5\u614b\u672c\u8cea\u3002<\/p>\n<h3>\ud83d\udd0d \u6a21\u578b\u6f14\u9032\u7684\u771f\u5be6\u60c5\u6cc1<\/h3>\n<p>\u696d\u52d9\u9700\u6c42\u6703\u6539\u8b8a\u3002\u4e00\u500b\u7522\u54c1\u6700\u521d\u53ef\u80fd\u53ea\u5c6c\u65bc\u4e00\u500b\u5206\u985e\uff0c\u4f46\u5f8c\u4f86\u696d\u52d9\u64f4\u5c55\uff0c\u5141\u8a31\u6bcf\u500b\u7522\u54c1\u64c1\u6709\u591a\u4e2a\u5206\u985e\u3002\u9019\u4f7f\u5f97\u6a21\u578b\u5f9e\u4e00\u5c0d\u591a\u8f49\u8b8a\u70ba\u591a\u5c0d\u591a\u3002<\/p>\n<ul>\n<li><strong>\u91cd\u69cb\u98a8\u96aa\uff1a<\/strong>\u66f4\u6539\u95dc\u4fc2\u985e\u578b\u901a\u5e38\u9700\u8981\u8cc7\u6599\u9077\u79fb\u8173\u672c\u3002<\/li>\n<li><strong>\u5411\u5f8c\u76f8\u5bb9\u6027\uff1a<\/strong>\u820a\u7684\u5831\u8868\u53ef\u80fd\u4f9d\u8cf4\u65bc\u539f\u59cb\u7d50\u69cb\u3002<\/li>\n<li><strong>\u7248\u672c\u63a7\u5236\uff1a<\/strong>\u7dad\u8b77\u6a21\u5f0f\u8b8a\u66f4\u7684\u6b77\u53f2\u8a18\u9304\u5c0d\u65bc\u9577\u671f\u7a69\u5b9a\u81f3\u95dc\u91cd\u8981\u3002<\/li>\n<\/ul>\n<p>\u8a2d\u8a08\u5e2b\u61c9\u9810\u898b\u672a\u4f86\u7684\u6210\u9577\u3002\u96d6\u7136\u76ee\u524d\u4e00\u5c0d\u591a\u95dc\u4fc2\u662f\u6a19\u6e96\uff0c\u4f46\u6a21\u5f0f\u61c9\u5177\u5099\u5f48\u6027\u3002\u4f7f\u7528\u4ee3\u7406\u9375\uff08\u81ea\u52d5\u905e\u589e\u7684ID\uff09\u800c\u975e\u81ea\u7136\u9375\uff08\u5982\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\uff09\u4f5c\u70ba\u5916\u9375\uff0c\u901a\u5e38\u80fd\u7c21\u5316\u9019\u4e9b\u8f49\u63db\u3002<\/p>\n<h2>\u274c \u8ff7\u601d 4\uff1a\u5916\u9375\u7121\u6027\u80fd\u6210\u672c<\/h2>\n<p>\u6709\u4eba\u8a8d\u70ba\u52a0\u5165\u5916\u9375\u7d04\u675f\u50c5\u662f\u70ba\u4e86\u908f\u8f2f\u6b63\u78ba\uff0c\u5c0d\u6027\u80fd\u5f71\u97ff\u53ef\u5ffd\u7565\u4e0d\u8a08\u3002\u5be6\u969b\u4e0a\uff0c\u6bcf\u500b\u7d04\u675f\u90fd\u8981\u6c42\u8cc7\u6599\u5eab\u5f15\u64ce\u5728\u5beb\u5165\u64cd\u4f5c\u671f\u9593\u57f7\u884c\u6aa2\u67e5\u3002<\/p>\n<h3>\ud83d\udd0d \u5beb\u5165\u6027\u80fd\u7684\u771f\u5be6\u60c5\u6cc1<\/h3>\n<p>\u7576\u5c07\u8a18\u9304\u63d2\u5165\u5b50\u8868\u6642\uff0c\u8cc7\u6599\u5eab\u5fc5\u9808\u9a57\u8b49\u6240\u5f15\u7528\u7684\u7236\u8a18\u9304\u662f\u5426\u5b58\u5728\u3002\u9019\u6d89\u53ca\u4e00\u6b21\u67e5\u627e\u64cd\u4f5c\u3002\u5728\u9ad8\u541e\u5410\u91cf\u7cfb\u7d71\u4e2d\uff0c\u6b64\u67e5\u627e\u6703\u589e\u52a0\u5ef6\u9072\u3002<\/p>\n<ul>\n<li><strong>\u7d22\u5f15\u958b\u92b7\uff1a<\/strong>\u5916\u9375\u6b04\u4f4d\u61c9\u5efa\u7acb\u7d22\u5f15\uff0c\u4ee5\u52a0\u5feb\u9a57\u8b49\u904e\u7a0b\u3002<\/li>\n<li><strong>\u9396\u5b9a\uff1a<\/strong>\u53c3\u8003\u5b8c\u6574\u6027\u6aa2\u67e5\u53ef\u80fd\u9700\u8981\u5c0d\u7236\u8868\u52a0\u9396\u3002<\/li>\n<li><strong>\u7d1a\u806f\u64cd\u4f5c\uff1a<\/strong> \u5982\u679c <code>\u7d1a\u806f\u522a\u9664<\/code>\u555f\u7528\u5f8c\uff0c\u522a\u9664\u7236\u9805\u6703\u89f8\u767c\u591a\u500b\u5b50\u9805\u7684\u522a\u9664\uff0c\u9019\u53ef\u80fd\u6d88\u8017\u5927\u91cf\u8cc7\u6e90\u3002<\/li>\n<\/ul>\n<p>\u5728\u5927\u91cf\u8cc7\u6599\u8f38\u5165\u7684\u5834\u666f\u4e2d\uff0c\u4e00\u4e9b\u67b6\u69cb\u5e2b\u6703\u66ab\u6642\u505c\u7528\u5916\u9375\u7d04\u675f\u4ee5\u63d0\u5347\u541e\u5410\u91cf\u3002\u7136\u800c\uff0c\u9019\u53ef\u80fd\u5c0e\u81f4\u8cc7\u6599\u640d\u58de\u3002\u5b8c\u6574\u6027\u8207\u901f\u5ea6\u4e4b\u9593\u7684\u6b0a\u8861\u5fc5\u9808\u6839\u64da\u5177\u9ad4\u4f7f\u7528\u60c5\u5883\u4f86\u8a08\u7b97\u3002<\/p>\n<h2>\u274c \u4e8b\u5be6\u8b0a\u8a00 5\uff1a\u4e00\u5c0d\u591a\u8207\u591a\u5c0d\u591a\u76f8\u540c<\/h2>\n<p>\u5be6\u52d9\u4eba\u54e1\u6709\u6642\u6703\u6df7\u6dc6\u4e00\u5c0d\u591a\u8207\u591a\u5c0d\u591a\u7684\u8996\u89ba\u8868\u793a\u3002\u96d6\u7136\u5b83\u5011\u5728\u9ad8\u968e\u5716\u793a\u4e2d\u770b\u8d77\u4f86\u76f8\u4f3c\uff0c\u4f46\u5be6\u4f5c\u65b9\u5f0f\u5dee\u7570\u986f\u8457\u3002<\/p>\n<h3>\ud83d\udd0d \u95dc\u806f\u8868\u7684\u771f\u5be6\u60c5\u6cc1<\/h3>\n<p>\u771f\u6b63\u7684\u591a\u5c0d\u591a\u95dc\u4fc2\u9700\u8981\u4e00\u500b\u4e2d\u9593\u8868\uff0c\u901a\u5e38\u7a31\u70ba\u95dc\u806f\u8868\u6216\u6a4b\u63a5\u8868\u3002\u4e00\u5c0d\u591a\u95dc\u4fc2\u5247\u4e0d\u9700\u8981\u3002<\/p>\n<ul>\n<li><strong>\u4e00\u5c0d\u591a\uff1a<\/strong>\u900f\u904e\u5b50\u8868\u4e2d\u7684\u5916\u9375\u5efa\u7acb\u76f4\u63a5\u9023\u7d50\u3002<\/li>\n<li><strong>\u591a\u5c0d\u591a\uff1a<\/strong>\u9700\u8981\u4e00\u500b\u5305\u542b\u5169\u500b\u5be6\u9ad4\u5916\u9375\u7684\u65b0\u8868\u3002<\/li>\n<\/ul>\n<p>\u8a66\u5716\u4f7f\u7528\u55ae\u4e00\u5916\u9375\u6b04\u4f4d\u4f86\u5be6\u73fe\u591a\u5c0d\u591a\u908f\u8f2f\uff0c\u5c07\u5c0e\u81f4\u8cc7\u6599\u91cd\u8907\u6216\u907a\u5931\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u53ea\u4f7f\u7528\u5b78\u751f\u8868\u4e2d\u7684 <code>course_id<\/code> \u4f86\u9023\u7d50\u5b78\u751f\u8207\u591a\u9580\u8ab2\u7a0b\uff0c\u5b78\u751f\u53ea\u80fd\u8a3b\u518a\u4e00\u9580\u8ab2\u7a0b\u3002\u82e5\u8981\u5141\u8a31\u591a\u9580\u8a3b\u518a\uff0c\u5247\u9700\u8981\u4e00\u500b <code>Enrollment<\/code> \u8868\u3002<\/p>\n<h2>\ud83d\udee0\ufe0f \u5be6\u4f5c\u7684\u6700\u4f73\u5be6\u52d9<\/h2>\n<p>\u9075\u5faa\u6700\u4f73\u5be6\u52d9\u53ef\u78ba\u4fdd\u4e00\u5c0d\u591a\u95dc\u4fc2\u4fdd\u6301\u7a69\u5065\u3002\u9019\u4e9b\u6307\u5f15\u8457\u91cd\u65bc\u7d50\u69cb\u3001\u547d\u540d\u8207\u5b8c\u6574\u6027\u3002<\/p>\n<h3>\ud83d\udcdd \u547d\u540d\u6163\u4f8b<\/h3>\n<p>\u4e00\u81f4\u7684\u547d\u540d\u53ef\u6e1b\u5c11\u6b67\u7fa9\u3002\u5916\u9375\u61c9\u660e\u78ba\u8868\u793a\u95dc\u4fc2\u3002\u547d\u540d\u70ba <code>author_id<\/code> \u7684\u6b04\u4f4d\u6bd4 <code>auth_id<\/code>.<\/p>\n<ul>\n<li><strong>\u6a19\u6e96\u683c\u5f0f\uff1a<\/strong> <code>parent_table_singular<\/code>_id\u3002<\/li>\n<li><strong>\u4e00\u81f4\u6027\uff1a<\/strong> \u5728\u6240\u6709\u5be6\u9ad4\u4e0a\u61c9\u7528\u6b64\u6a21\u5f0f\u3002<\/li>\n<li><strong>\u5927\u5c0f\u5beb\u654f\u611f\u6027\uff1a<\/strong> \u5805\u6301\u4f7f\u7528\u5c0f\u5beb\u6216\u5927\u5beb\uff0c\u4ee5\u907f\u514d\u4e0d\u540c\u64cd\u4f5c\u7cfb\u7d71\u4e2d\u7684\u5927\u5c0f\u5beb\u654f\u611f\u6027\u554f\u984c\u3002<\/li>\n<\/ul>\n<h3>\ud83d\udd12 \u53c3\u8003\u5b8c\u6574\u6027<\/h3>\n<p>\u5f37\u5236\u57f7\u884c\u5b8c\u6574\u6027\u53ef\u9632\u6b62\u5b64\u7acb\u8a18\u9304\u3002\u5b64\u7acb\u8a18\u9304\u662f\u6307\u6307\u5411\u5df2\u4e0d\u5b58\u5728\u7684\u7236\u8a18\u9304\u7684\u5b50\u8a18\u9304\u3002<\/p>\n<ul>\n<li><strong>ON DELETE RESTRICT\uff1a<\/strong> \u5982\u679c\u5b58\u5728\u5b50\u9805\uff0c\u5247\u963b\u6b62\u522a\u9664\u7236\u9805\u3002<\/li>\n<li><strong>ON DELETE CASCADE\uff1a<\/strong> \u7576\u7236\u9805\u88ab\u522a\u9664\u6642\uff0c\u4e5f\u6703\u522a\u9664\u5b50\u9805\u3002<\/li>\n<li><strong>ON DELETE SET NULL\uff1a<\/strong> \u5982\u679c\u7236\u9805\u88ab\u522a\u9664\uff0c\u5247\u6e05\u9664\u5916\u9375\u3002<\/li>\n<\/ul>\n<p>\u9078\u64c7\u6b63\u78ba\u7684\u52d5\u4f5c\u53d6\u6c7a\u65bc\u8cc7\u6599\u7684\u95dc\u9375\u6027\u3002\u5c0d\u65bc\u91d1\u878d\u4ea4\u6613\uff0c<code>RESTRICT<\/code> \u901a\u5e38\u66f4\u5b89\u5168\u3002\u5c0d\u65bc\u66ab\u6642\u65e5\u8a8c\uff0c<code>CASCADE<\/code> \u53ef\u80fd\u662f\u53ef\u4ee5\u63a5\u53d7\u7684\u3002<\/p>\n<h2>\u2699\ufe0f \u6b63\u898f\u5316\u8207\u4e00\u5c0d\u591a<\/h2>\n<p>\u6b63\u898f\u5316\u662f\u7d44\u7e54\u8cc7\u6599\u4ee5\u6e1b\u5c11\u5197\u9918\u7684\u904e\u7a0b\u3002\u4e00\u5c0d\u591a\u95dc\u4fc2\u662f\u5be6\u73fe\u6b63\u898f\u5316\u7684\u4e3b\u8981\u6a5f\u5236\u3002<\/p>\n<h3>\ud83d\udcca \u7b2c\u4e8c\u7bc4\u5f0f\uff082NF\uff09<\/h3>\n<p>2NF \u8981\u6c42\u6240\u6709\u975e\u9375\u5c6c\u6027\u90fd\u5b8c\u5168\u4f9d\u8cf4\u65bc\u4e3b\u9375\u3002\u4e00\u5c0d\u591a\u95dc\u4fc2\u6709\u52a9\u65bc\u9694\u96e2\u91cd\u8907\u7fa4\u7d44\u3002\u5982\u679c\u4e00\u500b\u8868\u683c\u5305\u542b\u9805\u76ee\u6e05\u55ae\uff0c\u5c07\u8a72\u6e05\u55ae\u79fb\u81f3\u53e6\u4e00\u500b\u8868\u683c\u6703\u5efa\u7acb\u4e00\u5c0d\u591a\u7684\u9023\u7d50\u3002<\/p>\n<ul>\n<li><strong>\u4e4b\u524d\uff1a<\/strong> \u4e00\u884c\u5305\u542b\u591a\u500b\u7522\u54c1\u540d\u7a31\u3002<\/li>\n<li><strong> \u4e4b\u5f8c\uff1a<\/strong> \u7522\u54c1\u540d\u7a31\u79fb\u81f3\u7531\u7522\u54c1 ID \u9023\u7d50\u7684\u65b0\u8868\u683c\u3002<\/li>\n<\/ul>\n<p>\u9019\u7a2e\u5206\u96e2\u78ba\u4fdd\u66f4\u65b0\u7522\u54c1\u540d\u7a31\u53ea\u9700\u66f4\u6539\u4e00\u884c\uff0c\u800c\u4e0d\u662f\u66f4\u65b0\u591a\u884c\u4e2d\u91cd\u8907\u51fa\u73fe\u540d\u7a31\u7684\u8cc7\u6599\u3002<\/p>\n<h3>\ud83d\udcca \u7b2c\u4e09\u7bc4\u5f0f\uff083NF\uff09<\/h3>\n<p>3NF \u6d88\u9664\u4e86\u50b3\u905e\u4f9d\u8cf4\u6027\u3002\u4e00\u5c0d\u591a\u95dc\u4fc2\u6709\u52a9\u65bc\u78ba\u4fdd\u975e\u9375\u5c6c\u6027\u50c5\u4f9d\u8cf4\u65bc\u4e3b\u9375\uff0c\u800c\u4e0d\u4f9d\u8cf4\u65bc\u5176\u4ed6\u975e\u9375\u5c6c\u6027\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u4e00\u500b\u8868\u683c\u5132\u5b58<code>EmployeeID<\/code>, <code>\u90e8\u9580\u7de8\u865f<\/code>\uff0c\u4ee5\u53ca<code>\u90e8\u9580\u540d\u7a31<\/code>\uff0c\u5b58\u5728\u50b3\u905e\u4f9d\u8cf4\u6027\uff08\u54e1\u5de5 \u2192 \u90e8\u9580 \u2192 \u90e8\u9580\u540d\u7a31\uff09\u3002\u5c07\u5176\u62c6\u5206\u70ba\u4e00\u500b<em>\u54e1\u5de5<\/em>\u8cc7\u6599\u8868\u548c\u4e00\u500b<em>\u90e8\u9580<\/em>\u8cc7\u6599\u8868\uff0c\u53ef\u5efa\u7acb\u4e00\u5c0d\u591a\u7684\u95dc\u4fc2\uff0c\u5f9e\u800c\u89e3\u6c7a\u4f9d\u8cf4\u6027\u554f\u984c\u3002<\/p>\n<h2>\ud83d\udea7 \u9700\u907f\u514d\u7684\u5e38\u898b\u9677\u9631<\/h2>\n<p>\u5728\u8a2d\u8a08\u968e\u6bb5\u907f\u514d\u932f\u8aa4\uff0c\u53ef\u5927\u5e45\u7bc0\u7701\u958b\u767c\u6642\u9593\u3002\u4ee5\u4e0b\u9677\u9631\u7d93\u5e38\u6703\u9047\u5230\u3002<\/p>\n<ul>\n<li><strong>\u904e\u5ea6\u898f\u7bc4\u5316\uff1a<\/strong>\u5efa\u7acb\u904e\u591a\u8cc7\u6599\u8868\u6703\u4f7f\u67e5\u8a62\u8b8a\u5f97\u8907\u96dc\u3002\u61c9\u5728\u898f\u7bc4\u5316\u8207\u67e5\u8a62\u6548\u80fd\u4e4b\u9593\u53d6\u5f97\u5e73\u8861\u3002<\/li>\n<li><strong>\u907a\u6f0f\u5916\u9375\uff1a<\/strong>\u4f9d\u8cf4\u61c9\u7528\u7a0b\u5f0f\u908f\u8f2f\u4f86\u5f37\u5236\u57f7\u884c\u95dc\u4fc2\u5177\u6709\u98a8\u96aa\u3002\u8cc7\u6599\u5eab\u7d04\u675f\u624d\u662f\u771f\u5be6\u4f9d\u64da\u3002<\/li>\n<li><strong>\u932f\u8aa4\u7684\u53ef\u7a7a\u6027\uff1a<\/strong>\u5916\u9375\u901a\u5e38\u61c9\u70ba<code>\u975e\u7a7a<\/code>\u9664\u975e\u95dc\u4fc2\u70ba\u53ef\u9078\u3002\u82e5\u70ba<code>\u7a7a\u503c<\/code>\u5916\u9375\uff0c\u8868\u793a\u7121\u95dc\u4fc2\uff0c\u9019\u53ef\u80fd\u9055\u53cd\u696d\u52d9\u898f\u5247\u3002<\/li>\n<li><strong>\u8cc7\u6599\u985e\u578b\u4e0d\u5339\u914d\uff1a<\/strong>\u8acb\u78ba\u4fdd\u5916\u9375\u7684\u8cc7\u6599\u985e\u578b\u8207\u4e3b\u9375\u5b8c\u5168\u4e00\u81f4\u3002\u82e5\u4e00\u908a\u4f7f\u7528<code>VARCHAR<\/code>\uff0c\u53e6\u4e00\u908a\u4f7f\u7528<code>INT<\/code>\uff0c\u5c07\u5c0e\u81f4\u9023\u7d50\u4e2d\u65b7\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udcc9 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