{"id":9659,"date":"2025-01-10T14:48:15","date_gmt":"2025-01-10T06:48:15","guid":{"rendered":"https:\/\/www.cybermedian.com\/tw\/entity-relationship-diagrams-erds-a-comprehensive-guide\/"},"modified":"2026-04-14T11:07:56","modified_gmt":"2026-04-14T11:07:56","slug":"entity-relationship-diagrams-erds-a-comprehensive-guide","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/tw\/entity-relationship-diagrams-erds-a-comprehensive-guide\/","title":{"rendered":"\u5be6\u9ad4-\u95dc\u4fc2\u5716\uff08ERD\uff09\uff1a\u5168\u9762\u6307\u5357"},"content":{"rendered":"<h2>\u4ecb\u7d39<\/h2>\n<p>\u5be6\u9ad4-\u95dc\u4fc2\u5716\uff08<a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-modeling\/what-is-entity-relationship-diagram\/\">ERD<\/a>\uff09\u662f\u8cc7\u6599\u5eab\u8a2d\u8a08\u8207\u8edf\u9ad4\u5de5\u7a0b\u4e2d\u7684\u91cd\u8981\u5de5\u5177\u3002\u5b83\u5011\u63d0\u4f9b\u4e86\u7cfb\u7d71\u5167\u4e0d\u540c\u5be6\u9ad4\u4e4b\u9593\u8cc7\u6599\u7d50\u69cb\u8207\u95dc\u4fc2\u7684\u8996\u89ba\u5316\u5448\u73fe\u3002\u672c\u6587\u65e8\u5728\u4f5c\u70ba\u7406\u89e3ERD\u7684\u5168\u9762\u6307\u5357\uff0c\u63a2\u8a0e\u95dc\u9375\u6982\u5ff5\uff0c\u4e26\u900f\u904e\u6848\u4f8b\u7814\u7a76\u5c55\u793a\u5176\u5be6\u969b\u61c9\u7528\u3002<\/p>\n<h2>ERD\u7684\u95dc\u9375\u6982\u5ff5<\/h2>\n<h3>\u5be6\u9ad4<\/h3>\n<p>\u5be6\u9ad4\u662f\u8cc7\u6599\u5eab\u4e2d\u7684\u57fa\u672c\u7269\u4ef6\u6216\u6982\u5ff5\u3002\u5b83\u5011\u4ee3\u8868\u73fe\u5be6\u4e16\u754c\u4e2d\u7684\u4e8b\u7269\uff0c\u4f8b\u5982\u5ba2\u6236\u3001\u7522\u54c1\u6216\u8a02\u55ae\u3002\u6bcf\u500b\u5be6\u9ad4\u90fd\u6709\u63cf\u8ff0\u5176\u7279\u6027\u7684\u5c6c\u6027\u3002\u4f8b\u5982\uff0c\u300c\u5ba2\u6236\u300d\u5be6\u9ad4\u53ef\u80fd\u5177\u6709\u300c\u5ba2\u6236\u7de8\u865f\u300d\u3001\u300c\u540d\u5b57\u300d\u3001\u300c\u59d3\u6c0f\u300d\u548c\u300c\u96fb\u5b50\u90f5\u4ef6\u300d\u7b49\u5c6c\u6027\u3002<\/p>\n<h3>\u95dc\u4fc2<\/h3>\n<p>\u95dc\u4fc2\u5b9a\u7fa9\u4e86\u5be6\u9ad4\u4e4b\u9593\u7684\u4e92\u52d5\u65b9\u5f0f\u3002\u5b83\u53ef\u4ee5\u662f\u4e00\u5c0d\u4e00\u3001\u4e00\u5c0d\u591a\u6216\u591a\u5c0d\u591a\u3002\u4f8b\u5982\uff0c\u300c\u5ba2\u6236\u300d\u5be6\u9ad4\u8207\u300c\u8a02\u55ae\u300d\u5be6\u9ad4\u4e4b\u9593\u53ef\u80fd\u5177\u6709\u4e00\u5c0d\u591a\u7684\u95dc\u4fc2\uff0c\u8868\u793a\u4e00\u4f4d\u5ba2\u6236\u53ef\u4ee5\u4e0b\u591a\u7b46\u8a02\u55ae\u3002<\/p>\n<h3>\u5c6c\u6027<\/h3>\n<p>\u5c6c\u6027\u662f\u5be6\u9ad4\u7684\u6027\u8cea\u6216\u7279\u5fb5\u3002\u5b83\u5011\u63d0\u4f9b\u4e86\u5be6\u9ad4\u7684\u8a73\u7d30\u8cc7\u8a0a\u3002\u4f8b\u5982\uff0c\u300c\u96fb\u5f71\u300d\u5be6\u9ad4\u7684\u5c6c\u6027\u53ef\u80fd\u5305\u62ec\u300c\u7247\u540d\u300d\u3001\u300c\u4e0a\u6620\u5e74\u4efd\u300d\u548c\u300c\u8a55\u5206\u300d\u3002<\/p>\n<h3>\u4e3b\u8981\u9375<\/h3>\n<p>\u4e3b\u8981\u9375\u662f\u5be6\u9ad4\u7684\u552f\u4e00\u8b58\u5225\u7b26\u3002\u5b83\u78ba\u4fdd\u5be6\u9ad4\u4e2d\u7684\u6bcf\u4e00\u7b46\u8a18\u9304\u90fd\u80fd\u88ab\u552f\u4e00\u8b58\u5225\u3002\u4f8b\u5982\uff0c\u300c\u5ba2\u6236\u7de8\u865f\u300d\u53ef\u4ee5\u662f\u300c\u5ba2\u6236\u300d\u5be6\u9ad4\u7684\u4e3b\u8981\u9375\u3002<\/p>\n<h3>\u5916\u4f86\u9375<\/h3>\n<p>\u5916\u4f86\u9375\u662f\u67d0\u4e00\u5be6\u9ad4\u4e2d\u7684\u5c6c\u6027\uff0c\u7528\u4f86\u53c3\u8003\u53e6\u4e00\u5be6\u9ad4\u7684\u4e3b\u8981\u9375\u3002\u5b83\u5011\u7528\u4f86\u5efa\u7acb\u4e26\u5f37\u5236\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u4fc2\u3002\u4f8b\u5982\uff0c\u300c\u8a02\u55ae\u300d\u5be6\u9ad4\u53ef\u80fd\u5177\u6709\u5916\u4f86\u9375\u300c\u5ba2\u6236\u7de8\u865f\u300d\uff0c\u7528\u4f86\u53c3\u8003\u300c\u5ba2\u6236\u300d\u5be6\u9ad4\u3002<\/p>\n<h2>\u6848\u4f8b\u7814\u7a76\uff1a\u96fb\u5f71\u79df\u501f\u7cfb\u7d71<\/h2>\n<p>\u70ba\u4e86\u8aaa\u660eERD\u7684\u5be6\u969b\u61c9\u7528\uff0c\u8b93\u6211\u5011\u4ee5\u4e00\u500b\u96fb\u5f71\u79df\u501f\u7cfb\u7d71\u7684\u6848\u4f8b\u70ba\u4f8b\u3002\u8a72\u7cfb\u7d71\u7684ERD\u5df2\u65bc\u6240\u63d0\u4f9b\u7684\u5716\u793a\u4e2d\u5448\u73fe\u3002<\/p>\n<p><img alt=\"Entity Relationship Diagram: Movie Rental System\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/8d0b0c2d-1963-4997-b95a-aca38976851a\/entity-relationship-diagram-design\/entity-relationship-diagram-movie-rental-system.png\"\/><\/p>\n<h3>\u5be6\u9ad4\u8207\u5c6c\u6027<\/h3>\n<ol>\n<li><strong>\u96fb\u5f71<\/strong>\uff1a\u4ee3\u8868\u53ef\u4f9b\u79df\u501f\u7684\u96fb\u5f71\u3002\n<ul>\n<li>\u5c6c\u6027\uff1a\u96fb\u5f71\u7de8\u865f\u3001\u7247\u540d\u3001\u63cf\u8ff0\u3001\u4e0a\u6620\u5e74\u4efd\u3001\u79df\u501f\u671f\u9650\u3001\u79df\u501f\u8cbb\u7528\u3001\u9577\u5ea6\u3001\u66f4\u63db\u6210\u672c\u3001\u8a55\u5206\u3001\u7279\u6b8a\u529f\u80fd\u3001\u5168\u6587<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u985e\u5225<\/strong>\uff1a\u4ee3\u8868\u96fb\u5f71\u7684\u985e\u578b\u6216\u5206\u985e\u3002\n<ul>\n<li>\u5c6c\u6027\uff1a\u985e\u5225\u7de8\u865f\u3001\u540d\u7a31<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u96fb\u5f71\u985e\u5225<\/strong>\uff1a\u4ee3\u8868\u96fb\u5f71\u8207\u985e\u5225\u4e4b\u9593\u7684\u591a\u5c0d\u591a\u95dc\u4fc2\u3002\n<ul>\n<li>\u5c6c\u6027\uff1a\u96fb\u5f71\u7de8\u865f\u3001\u985e\u5225\u7de8\u865f<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u8a9e\u8a00<\/strong>\uff1a\u4ee3\u8868\u96fb\u5f71\u53ef\u4f9b\u4f7f\u7528\u7684\u8a9e\u8a00\u3002\n<ul>\n<li>\u5c6c\u6027\uff1aLanguageID\uff0cName<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u6f14\u54e1<\/strong>: \u4ee3\u8868\u96fb\u5f71\u4e2d\u7684\u6f14\u54e1\u3002\n<ul>\n<li>\u5c6c\u6027\uff1aActorID\uff0cFirstName\uff0cLastName<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u96fb\u5f71\u6f14\u54e1<\/strong>: \u4ee3\u8868\u96fb\u5f71\u8207\u6f14\u54e1\u4e4b\u9593\u7684\u591a\u5c0d\u591a\u95dc\u4fc2\u3002\n<ul>\n<li>\u5c6c\u6027\uff1aFilmID\uff0cActorID<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u5eab\u5b58<\/strong>: \u4ee3\u8868\u53ef\u4f9b\u79df\u8cc3\u7684\u96fb\u5f71\u5eab\u5b58\u3002\n<ul>\n<li>\u5c6c\u6027\uff1aInventoryID\uff0cFilmID<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u79df\u8cc3<\/strong>: \u4ee3\u8868\u79df\u8cc3\u4ea4\u6613\u3002\n<ul>\n<li>\u5c6c\u6027\uff1aRentalID\uff0cStaffID\uff0cCustomerID\uff0cInventoryID\uff0cRentalDate\uff0cReturnDate<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u4ed8\u6b3e<\/strong>: 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href=\"https:\/\/online.visual-paradigm.com\/diagrams\/solutions\/free-erd-tool\/\">\u5f37\u5927\u7684\u5de5\u5177<\/a>\u7528\u65bc\u8a2d\u8a08\u548c\u7406\u89e3\u8cc7\u6599\u5eab\u7d50\u69cb\u7684\u5de5\u5177\u3002\u900f\u904e\u8996\u89ba\u5316\u5448\u73fe\u5be6\u9ad4\u3001\u5c6c\u6027\u548c\u95dc\u4fc2\uff0cERDs\u6709\u52a9\u65bc\u5efa\u7acb\u9ad8\u6548\u4e14\u7d50\u69cb\u826f\u597d\u7684\u8cc7\u6599\u5eab\u3002\u96fb\u5f71\u79df\u501f\u7cfb\u7d71\u7684\u6848\u4f8b\u7814\u7a76\u5c55\u793a\u4e86\u5982\u4f55\u904b\u7528ERDs\u4f86\u6a21\u64ec\u8907\u96dc\u7cfb\u7d71\uff0c\u4e26\u78ba\u4fdd\u8cc7\u6599\u7684\u5b8c\u6574\u6027\u8207\u4e00\u81f4\u6027\u3002\u7121\u8ad6\u60a8\u662f\u8cc7\u6599\u5eab\u8a2d\u8a08\u5e2b\u3001\u8edf\u9ad4\u5de5\u7a0b\u5e2b\u6216\u8cc7\u6599\u5206\u6790\u5e2b\uff0c<a 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