{"id":6566,"date":"2026-02-05T10:17:24","date_gmt":"2026-02-05T02:17:24","guid":{"rendered":"https:\/\/guides.visual-paradigm.com\/tw\/frequently-asked-questions-faq-for-entity-relationship-er-modeling\/"},"modified":"2026-02-05T10:17:24","modified_gmt":"2026-02-05T02:17:24","slug":"frequently-asked-questions-faq-for-entity-relationship-er-modeling","status":"publish","type":"post","link":"https:\/\/guides.visual-paradigm.com\/tw\/frequently-asked-questions-faq-for-entity-relationship-er-modeling\/","title":{"rendered":"\u5be6\u9ad4-\u95dc\u4fc2 (ER) \u5efa\u6a21\u5e38\u898b\u554f\u984c\u96c6 (FAQ)"},"content":{"rendered":"<h2>\u7c21\u4ecb<\/h2>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-modeling\/what-is-entity-relationship-diagram\/\">\u5be6\u9ad4-\u95dc\u4fc2 (ER) \u5efa\u6a21<\/a>\u662f\u6709\u6548\u8cc7\u6599\u5eab\u8a2d\u8a08\u7684\u57fa\u77f3\uff0c\u63d0\u4f9b\u4e00\u7a2e\u7d50\u69cb\u5316\u7684\u65b9\u6cd5\u4f86\u8868\u793a\u548c\u5b9a\u7fa9\u8cc7\u6599\u5eab\u7cfb\u7d71\u4e2d\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u4fc2\u3002\u7121\u8ad6\u60a8\u662f\u7d93\u9a57\u8c50\u5bcc\u7684\u8cc7\u6599\u5eab\u5c08\u696d\u4eba\u58eb\uff0c\u9084\u662f\u525b\u8e0f\u5165\u8cc7\u6599\u7ba1\u7406\u4e16\u754c\u7684\u5b78\u751f\uff0cER \u5efa\u6a21\u90fd\u662f\u60a8\u5fc5\u5b9a\u6703\u9047\u5230\u4e26\u52a0\u4ee5\u904b\u7528\u7684\u6982\u5ff5\u3002\u5728\u9019\u4efd\u5168\u9762\u6307\u5357\u4e2d\uff0c\u6211\u5011\u56de\u7b54\u4e86\u95dc\u65bc ER \u5efa\u6a21\u6700\u5e38\u898b\u7684\u554f\u984c\uff08FAQ\uff09\uff0c\u70ba\u60a8\u63d0\u4f9b\u5c0d\u6b64\u95dc\u9375\u5b78\u79d1\u57fa\u672c\u539f\u7406\u8207\u7d30\u7bc0\u7684\u6df1\u5165\u7406\u89e3\u3002\u5f9e\u7406\u89e3\u5be6\u9ad4\u3001\u5c6c\u6027\u8207\u95dc\u4fc2\uff0c\u5230\u638c\u63e1\u57fa\u6578\u4e26\u8655\u7406\u8907\u96dc\u60c5\u5883\uff0c\u672c FAQ \u662f\u60a8\u89e3\u958b ER \u5efa\u6a21\u8ff7\u601d\u7684\u9996\u9078\u8cc7\u6e90\u3002<\/p>\n<p id=\"PHxmkKG\"><img fetchpriority=\"high\" alt=\"\" class=\"alignnone wp-image-2039\" decoding=\"async\" fetchpriority=\"high\" height=\"324\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/09\/img_6503caa2b9c6b.png\" width=\"452\"\/><\/p>\n<h2>1. \u4ec0\u9ebc\u662f\u5be6\u9ad4-\u95dc\u4fc2 (ER) \u5efa\u6a21\uff1f<\/h2>\n<p>ER \u5efa\u6a21\u662f\u4e00\u7a2e\u7528\u65bc\u8996\u89ba\u5316\u548c\u63cf\u8ff0\u8cc7\u6599\u5eab\u4e2d\u5132\u5b58\u8cc7\u6599\u7684\u65b9\u6cd5\u3002\u5b83\u5305\u62ec\u5b9a\u7fa9\u5be6\u9ad4\uff08\u7269\u4ef6\u6216\u6982\u5ff5\uff09\u3001\u5b83\u5011\u7684\u5c6c\u6027\uff08\u7279\u6027\uff09\u4ee5\u53ca\u5b83\u5011\u4e4b\u9593\u7684\u95dc\u4fc2\u3002ER \u5716\u8868\u662f\u9019\u4e9b\u6982\u5ff5\u7684\u5716\u5f62\u5316\u8868\u793a\uff0c\u4f7f\u8cc7\u6599\u5eab\u7d50\u69cb\u7684\u8a2d\u8a08\u8207\u7406\u89e3\u8b8a\u5f97\u66f4\u5bb9\u6613\u3002<\/p>\n<h2>2. \u4ec0\u9ebc\u662f\u5be6\u9ad4\u8207\u5c6c\u6027\uff1f<\/h2>\n<p>\u5be6\u9ad4\u662f\u8cc7\u6599\u5eab\u4e2d\u7684\u57fa\u672c\u7269\u4ef6\u6216\u6982\u5ff5\u3002\u5c6c\u6027\u662f\u7528\u4f86\u63cf\u8ff0\u9019\u4e9b\u5be6\u9ad4\u7684\u7279\u6027\u3002\u4f8b\u5982\uff0c\u5728\u5716\u66f8\u9928\u7684\u8cc7\u6599\u5eab\u4e2d\uff0c\u201c\u66f8\u7c4d\u201d\u53ef\u80fd\u662f\u4e00\u500b\u5be6\u9ad4\uff0c\u800c\u201c\u66f8\u7c4d\u201d\u5be6\u9ad4\u7684\u5c6c\u6027\u53ef\u80fd\u5305\u62ec\u201c\u66f8\u540d\u201d\u3001\u201c\u4f5c\u8005\u201d\u548c\u201cISBN\u201d\u3002<\/p>\n<h2>3. \u5728 ER \u5efa\u6a21\u4e2d\uff0c\u4ec0\u9ebc\u662f\u95dc\u4fc2\uff1f<\/h2>\n<p>\u95dc\u4fc2\u4ee3\u8868\u5169\u500b\u6216\u591a\u500b\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u806f\u3002\u5b83\u5b9a\u7fa9\u4e86\u5be6\u9ad4\u5728\u8cc7\u6599\u5eab\u4e2d\u5982\u4f55\u76f8\u4e92\u9023\u63a5\u3002\u95dc\u4fc2\u53ef\u4ee5\u662f\u4e00\u5c0d\u4e00\u3001\u4e00\u5c0d\u591a\u6216\u591a\u5c0d\u591a\uff0c\u5177\u9ad4\u53d6\u6c7a\u65bc\u5be6\u9ad4\u4e4b\u9593\u9023\u63a5\u7684\u57fa\u6578\u3002<\/p>\n<h2>4. \u5728 ER \u5efa\u6a21\u4e2d\uff0c\u57fa\u6578\u662f\u4ec0\u9ebc\uff1f<\/h2>\n<p>\u57fa\u6578\u6307\u660e\u4e00\u500b\u5be6\u9ad4\u7684\u51fa\u73fe\u6b21\u6578\uff0c\u53ef\u4ee5\u8207\u53e6\u4e00\u500b\u5be6\u9ad4\u7684\u51fa\u73fe\u6b21\u6578\u900f\u904e\u95dc\u4fc2\u76f8\u9023\u3002\u5e38\u898b\u7684\u57fa\u6578\u5305\u62ec\u300c\u4e00\u500b\u300d\uff081\uff09\u3001\u300c\u96f6\u500b\u6216\u4e00\u500b\u300d\uff080..1\uff09\u3001\u300c\u96f6\u500b\u6216\u591a\u500b\u300d\uff080..<em>\uff09\uff0c\u4ee5\u53ca\u300c\u4e00\u500b\u6216\u591a\u500b\u300d\uff081..<\/em>).<\/p>\n<h2>5. \u6211\u8a72\u5982\u4f55\u5efa\u7acb ER \u5716\uff1f<\/h2>\n<p>\u8981\u5efa\u7acb ER \u5716\uff0c\u9996\u5148\u61c9\u8b58\u5225\u5be6\u9ad4\u3001\u5b83\u5011\u7684\u5c6c\u6027\u4ee5\u53ca\u5b83\u5011\u4e4b\u9593\u7684\u95dc\u4fc2\u3002\u63a5\u8457\uff0c\u4f7f\u7528\u5c08\u696d\u8edf\u9ad4\u6216\u7e6a\u5716\u5de5\u5177\u4f86\u5efa\u7acb\u5716\u5f62\u5316\u8868\u793a\u3002\u5e38\u898b\u7684 ER \u5efa\u6a21\u5de5\u5177\u5305\u62ec Lucidchart\u3001draw.io \u548c ERDPlus\u3002<\/p>\n<h2>6. \u5be6\u9ad4\u8207\u8cc7\u6599\u8868\u4e4b\u9593\u6709\u4ec0\u9ebc\u5dee\u5225\uff1f<\/h2>\n<p>ER \u5efa\u6a21\u4e2d\u7684\u5be6\u9ad4\u662f\u6982\u5ff5\u6027\u7684\u8868\u793a\uff0c\u800c\u8cc7\u6599\u8868\u662f\u95dc\u806f\u5f0f\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08RDBMS\uff09\u4e2d\u7684\u5be6\u9ad4\u7d50\u69cb\u3002\u5728\u8a2d\u8a08\u8cc7\u6599\u5eab\u6642\uff0c\u60a8\u6703\u5c07\u5be6\u9ad4\u5c0d\u61c9\u5230\u8cc7\u6599\u8868\uff0c\u4e26\u5c07\u5c6c\u6027\u5c0d\u61c9\u5230\u9019\u4e9b\u8cc7\u6599\u8868\u4e2d\u7684\u6b04\u4f4d\u3002<\/p>\n<h2>7. \u6211\u53ef\u4ee5\u5728\u95dc\u4fc2\u4e2d\u64c1\u6709\u5c6c\u6027\u55ce\uff1f<\/h2>\n<p>\u662f\u7684\uff0c\u5c6c\u6027\u53ef\u4ee5\u8207\u95dc\u4fc2\u95dc\u806f\u3002\u9019\u4e9b\u7a31\u70ba\u95dc\u4fc2\u5c6c\u6027\uff0c\u53ef\u63d0\u4f9b\u6709\u95dc\u95dc\u806f\u672c\u8eab\u7684\u984d\u5916\u8cc7\u8a0a\u3002\u4f8b\u5982\uff0c\u5728\u300c\u5b78\u751f\u8a3b\u518a\u8ab2\u7a0b\u300d\u7684\u95dc\u4fc2\u4e2d\uff0c\u60a8\u53ef\u80fd\u6703\u6709\u300c\u8a3b\u518a\u65e5\u671f\u300d\u9019\u500b\u5c6c\u6027\u3002<\/p>\n<h2>8. \u4ec0\u9ebc\u662f ERD\uff1f<\/h2>\n<p>ERD \u662f\u5be6\u9ad4-\u95dc\u4fc2\u5716\u7684\u7e2e\u5beb\u3002\u5b83\u662f\u8cc7\u6599\u5eab\u7cfb\u7d71\u4e2d\u5be6\u9ad4\u3001\u5c6c\u6027\u8207\u95dc\u4fc2\u7684\u8996\u89ba\u5316\u8868\u793a\u3002ERD \u5c0d\u65bc\u5229\u76ca\u76f8\u95dc\u8005\u4e4b\u9593\u7684\u6e9d\u901a\u4ee5\u53ca\u5f15\u5c0e\u8cc7\u6599\u5eab\u8a2d\u8a08\u904e\u7a0b\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h2>9. \u6211\u8a72\u5982\u4f55\u6c7a\u5b9a\u4f55\u6642\u4f7f\u7528\u4e00\u5c0d\u4e00\u3001\u4e00\u5c0d\u591a\u6216\u591a\u5c0d\u591a\u7684\u95dc\u4fc2\uff1f<\/h2>\n<p>\u57fa\u6578\u7684\u9078\u64c7\u53d6\u6c7a\u65bc\u60a8\u6240\u5efa\u6a21\u7684\u73fe\u5be6\u60c5\u5883\u3002\u7576\u4e00\u500b\u5be6\u9ad4\u76f4\u63a5\u8207\u53e6\u4e00\u500b\u5be6\u9ad4\u76f8\u95dc\u6642\uff0c\u4f7f\u7528\u4e00\u5c0d\u4e00\u95dc\u4fc2\u3002\u4e00\u5c0d\u591a\u95dc\u4fc2\u4ee3\u8868\u4e00\u500b\u5be6\u9ad4\u8207\u53e6\u4e00\u500b\u5be6\u9ad4\u7684\u591a\u500b\u5be6\u4f8b\u76f8\u95dc\u7684\u60c5\u6cc1\u3002\u7576\u4e00\u500b\u5be6\u9ad4\u7684\u591a\u500b\u5be6\u4f8b\u53ef\u4ee5\u8207\u53e6\u4e00\u500b\u5be6\u9ad4\u7684\u591a\u500b\u5be6\u4f8b\u76f8\u9023\u6642\uff0c\u5247\u4f7f\u7528\u591a\u5c0d\u591a\u95dc\u4fc2\u3002<\/p>\n<h2>10. \u4ec0\u9ebc\u662f\u5f31\u5be6\u9ad4\uff1f<\/h2>\n<p>\u5f31\u5be6\u9ad4\u662f\u7121\u6cd5\u50c5\u6191\u5176\u5c6c\u6027\u552f\u4e00\u8b58\u5225\u7684\u5be6\u9ad4\uff0c\u5fc5\u9808\u4f9d\u8cf4\u76f8\u95dc\u7684\u5f37\u5be6\u9ad4\u4f86\u9032\u884c\u8b58\u5225\u3002\u5b83\u5011\u901a\u5e38\u8207\u5f37\u5be6\u9ad4\u5f62\u6210\u4e00\u5c0d\u591a\u7684\u95dc\u4fc2\u3002<\/p>\n<p>ER \u5efa\u6a21\u662f\u8cc7\u6599\u5eab\u8a2d\u8a08\u4e2d\u7684\u57fa\u672c\u6280\u80fd\uff0c\u5728\u5efa\u7acb\u9ad8\u6548\u4e14\u6709\u7d44\u7e54\u7684\u8cc7\u6599\u5eab\u7cfb\u7d71\u4e2d\u626e\u6f14\u8457\u95dc\u9375\u89d2\u8272\u3002\u9019\u4e9b\u5e38\u898b\u554f\u984c\u61c9\u80fd\u70ba\u60a8\u63d0\u4f9b\u4e00\u500b\u7a69\u56fa\u7684\u57fa\u790e\uff0c\u4ee5\u958b\u59cb\u4f7f\u7528 ER \u5716\u4e26\u8a2d\u8a08\u6709\u6548\u7684\u8cc7\u6599\u5eab\u3002\u96a8\u8457\u7d93\u9a57\u7684\u7d2f\u7a4d\uff0c\u60a8\u5c07\u80fd\u5920\u8655\u7406\u66f4\u8907\u96dc\u7684\u60c5\u5883\uff0c\u4e26\u9032\u4e00\u6b65\u63d0\u5347\u60a8\u7684 ER \u5efa\u6a21\u6280\u80fd\u3002<\/p>\n<div class=\"flex-1 overflow-hidden\">\n<div class=\"react-scroll-to-bottom--css-fdoln-79elbk h-full dark:bg-gray-800\">\n<div class=\"react-scroll-to-bottom--css-fdoln-1n7m0yu\">\n<div class=\"flex flex-col text-sm dark:bg-gray-800\">\n<div class=\"group w-full text-token-text-primary border-b border-black\/10 dark:border-gray-900\/50 bg-gray-50 dark:bg-[#444654]\" data-testid=\"conversation-turn-5\">\n<div class=\"p-4 justify-center text-base md:gap-6 md:py-6 m-auto\">\n<div class=\"flex flex-1 gap-4 text-base mx-auto md:gap-6 md:max-w-2xl lg:max-w-[38rem] xl:max-w-3xl }\">\n<div class=\"relative flex w-[calc(100%-50px)] flex-col gap-1 md:gap-3 lg:w-[calc(100%-115px)]\">\n<div class=\"flex flex-grow flex-col gap-3 max-w-full\">\n<div class=\"min-h-[20px] flex flex-col items-start gap-3 overflow-x-auto whitespace-pre-wrap break-words\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<h2>11. \u5be6\u9ad4\u8207\u5be6\u9ad4\u985e\u578b\u4e4b\u9593\u6709\u4ec0\u9ebc\u5dee\u5225\uff1f<\/h2>\n<p>\u5be6\u9ad4\u985e\u578b\u662f\u5177\u6709\u5171\u540c\u5c6c\u6027\u548c\u95dc\u4fc2\u7684\u5be6\u9ad4\u7684\u4e00\u822c\u985e\u5225\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u5be6\u9ad4\u5247\u4ee3\u8868\u8a72\u5be6\u9ad4\u985e\u578b\u7684\u7279\u5b9a\u5be6\u4f8b\u3002\u4f8b\u5982\uff0c\u201c\u6c7d\u8eca\u201d\u662f\u4e00\u500b\u5be6\u9ad4\u985e\u578b\uff0c\u800c\u201c\u8c50\u7530 Camry\u201d\u662f\u8a72\u5be6\u9ad4\u985e\u578b\u7684\u4e00\u500b\u5be6\u4f8b\u3002<\/p>\n<h2>12. \u5c6c\u6027\u53ef\u4ee5\u8207\u5176\u4ed6\u5c6c\u6027\u5efa\u7acb\u95dc\u4fc2\u55ce\uff1f<\/h2>\n<p>\u5c6c\u6027\u672c\u8eab\u4e26\u4e0d\u6703\u8207\u5176\u4ed6\u5c6c\u6027\u5efa\u7acb\u95dc\u4fc2\u3002\u95dc\u4fc2\u901a\u5e38\u662f\u5728\u5be6\u9ad4\u4e4b\u9593\u5b9a\u7fa9\uff0c\u4ee5\u8868\u793a\u5b83\u5011\u4e4b\u9593\u7684\u4e92\u52d5\u65b9\u5f0f\u3002\u7136\u800c\uff0c\u60a8\u53ef\u4ee5\u6839\u64da\u5be6\u9ad4\u7684\u5c6c\u6027\u4f86\u5efa\u7acb\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u4fc2\uff0c\u4ee5\u6355\u6349\u8907\u96dc\u7684\u8cc7\u6599\u7d50\u69cb\u3002<\/p>\n<h2>13. \u5728ER\u5efa\u6a21\u4e2d\uff0c\u4e3b\u9375\u7684\u7528\u9014\u662f\u4ec0\u9ebc\uff1f<\/h2>\n<p>\u4e3b\u9375\u662f\u4e00\u7a2e\u5c6c\u6027\u6216\u5c6c\u6027\u7684\u7d44\u5408\uff0c\u53ef\u552f\u4e00\u8b58\u5225\u5be6\u9ad4\u985e\u578b\u4e2d\u7684\u6bcf\u500b\u5be6\u9ad4\u5be6\u4f8b\u3002\u5b83\u5c0d\u65bc\u78ba\u4fdd\u8cc7\u6599\u5b8c\u6574\u6027\u4ee5\u53ca\u5728\u8cc7\u6599\u5eab\u4e2d\u5efa\u7acb\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u4fc2\u81f3\u95dc\u91cd\u8981\u3002\u4e3b\u9375\u901a\u5e38\u4f5c\u70ba\u5728\u95dc\u4fc2\u578b\u8cc7\u6599\u5eab\u4e2d\u76f8\u95dc\u8868\u683c\u5efa\u7acb\u5916\u9375\u7684\u57fa\u790e\u3002<\/p>\n<h2>14. \u4ec0\u9ebc\u662f\u95dc\u806f\u5be6\u9ad4\uff1f<\/h2>\n<p>\u95dc\u806f\u5be6\u9ad4\uff0c\u4e5f\u7a31\u70ba\u9023\u63a5\u8868\u6216\u9023\u7d50\u8868\uff0c\u7528\u65bc\u591a\u5c0d\u591a\u95dc\u4fc2\u4e2d\u3002\u5b83\u901a\u904e\u5728\u6d89\u53ca\u7684\u5169\u500b\u5be6\u9ad4\u4e4b\u9593\u5efa\u7acb\u6a4b\u6a11\u4f86\u89e3\u6c7a\u9019\u7a2e\u95dc\u4fc2\u3002\u4f8b\u5982\uff0c\u5728\u66f8\u5e97\u7684\u8cc7\u6599\u5eab\u4e2d\uff0c\u95dc\u806f\u5be6\u9ad4\u53ef\u7528\u4f86\u9023\u63a5\u300c\u4f5c\u8005\u300d\u548c\u300c\u66f8\u7c4d\u300d\uff0c\u4ee5\u8868\u793a\u4f5c\u8005\u8207\u5176\u64b0\u5beb\u7684\u66f8\u7c4d\u4e4b\u9593\u7684\u95dc\u4fc2\u3002<\/p>\n<h2>15. \u5728ER\u5efa\u6a21\u4e2d\uff0c\u6211\u8a72\u5982\u4f55\u8655\u7406\u5b50\u985e\u578b\u548c\u8d85\u985e\u578b\uff1f<\/h2>\n<p>\u7576\u9700\u8981\u8868\u793a\u5be6\u9ad4\u985e\u578b\u7684\u4e0d\u540c\u985e\u5225\u6216\u7279\u6b8a\u5be6\u4f8b\u6642\uff0c\u6703\u4f7f\u7528\u5b50\u985e\u578b\u548c\u8d85\u985e\u578b\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u300c\u6cdb\u5316\u300d\uff08\u8868\u793a\u5171\u7528\u5c6c\u6027\uff09\u548c\u300c\u5c08\u5316\u300d\uff08\u8868\u793a\u7368\u7279\u5c6c\u6027\uff09\u7b49\u6280\u8853\u4f86\u6709\u6548\u5efa\u6a21\u5b50\u985e\u578b\u548c\u8d85\u985e\u578b\u3002<\/p>\n<h2>16. \u4ec0\u9ebc\u662f\u905e\u8ff4\u95dc\u4fc2\uff1f<\/h2>\n<p>\u7576\u5be6\u9ad4\u985e\u578b\u8207\u81ea\u8eab\u76f8\u95dc\u6642\uff0c\u5c31\u6703\u7522\u751f\u905e\u8ff4\u95dc\u4fc2\u3002\u9019\u7a2e\u95dc\u4fc2\u901a\u5e38\u7528\u65bc\u5efa\u6a21\u5c64\u7d1a\u7d50\u69cb\u6216\u7db2\u7d61\uff0c\u4f8b\u5982\u7d44\u7e54\u67b6\u69cb\u3001\u5bb6\u8b5c\u6216\u793e\u4ea4\u7db2\u7d61\u3002<\/p>\n<h2>17. \u6211\u8a72\u5982\u4f55\u78ba\u4fdd\u6211\u7684ER\u5716\u80fd\u6e96\u78ba\u53cd\u6620\u73fe\u5be6\u60c5\u5883\uff1f<\/h2>\n<p>\u70ba\u78ba\u4fdd\u6e96\u78ba\u6027\uff0c\u5fc5\u9808\u5f9e\u5229\u76ca\u76f8\u95dc\u8005\u90a3\u88e1\u6536\u96c6\u8a73\u7d30\u9700\u6c42\uff0c\u4e26\u5fb9\u5e95\u5206\u6790\u60a8\u6b63\u5728\u5efa\u6a21\u7684\u73fe\u5be6\u60c5\u5883\u3002\u5b9a\u671f\u8207\u9818\u57df\u5c08\u5bb6\u548c\u4f7f\u7528\u8005\u5be9\u67e5\u4e26\u9a57\u8b49\u60a8\u7684ER\u5716\uff0c\u4ee5\u8b58\u5225\u4efb\u4f55\u5dee\u7570\u4e26\u9032\u884c\u5fc5\u8981\u7684\u8abf\u6574\u3002<\/p>\n<h2>18. \u5be6\u9ad4\u662f\u5426\u53ef\u4ee5\u540c\u6642\u53c3\u8207\u591a\u500b\u95dc\u4fc2\uff1f<\/h2>\n<p>\u662f\u7684\uff0c\u5be6\u9ad4\u53ef\u4ee5\u5728\u8cc7\u6599\u5eab\u4e2d\u8207\u5176\u4ed6\u5be6\u9ad4\u53c3\u8207\u591a\u500b\u95dc\u4fc2\u3002\u9019\u5728\u8907\u96dc\u7684\u8cc7\u6599\u5eab\u8a2d\u8a08\u4e2d\u5f88\u5e38\u898b\uff0c\u56e0\u70ba\u5be6\u9ad4\u6703\u8207\u5176\u4ed6\u5be6\u9ad4\u6709\u591a\u7a2e\u4e92\u52d5\u548c\u95dc\u806f\u3002<\/p>\n<h2>19. ER\u5716\u8207\u985e\u5716\u4e4b\u9593\u6709\u4ec0\u9ebc\u5340\u5225\uff1f<\/h2>\n<p>ER\u5716\u5c08\u6ce8\u65bc\u8cc7\u6599\u5efa\u6a21\uff0c\u7528\u4ee5\u8868\u793a\u8cc7\u6599\u5eab\u4e2d\u7684\u5be6\u9ad4\u3001\u5c6c\u6027\u548c\u95dc\u4fc2\u3002\u800c\u985e\u5716\u5247\u7528\u65bc\u7269\u4ef6\u5c0e\u5411\u5efa\u6a21\uff0c\u7528\u4ee5\u8868\u793a\u8edf\u9ad4\u958b\u767c\u4e2d\u7684\u985e\u5225\u3001\u5176\u5c6c\u6027\u3001\u65b9\u6cd5\u548c\u95dc\u806f\u3002<\/p>\n<h2>20. 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href=\"https:\/\/en.wikipedia.org\/wiki\/Entity%E2%80%93relationship_model\">\u5be6\u9ad4-\u95dc\u4fc2\uff08ER\uff09\u5efa\u6a21<\/a>\u662f\u8cc7\u6599\u5eab\u8a2d\u8a08\u7684\u57fa\u672c\u8981\u7d20\uff0c\u80fd\u5920\u6e05\u6670\u5730\u5448\u73fe\u8cc7\u6599\u5eab\u7cfb\u7d71\u5167\u7684\u8cc7\u6599\u7d50\u69cb\u8207\u95dc\u4fc2\u3002\u5728\u672c\u5e38\u898b\u554f\u984c\u96c6\u4e2d\uff0c\u6211\u5011\u63a2\u8a0e\u4e86\u5ee3\u6cdb\u7684\u554f\u984c\uff0c\u5e6b\u52a9\u60a8\u638c\u63e1ER\u5efa\u6a21\u7684\u6838\u5fc3\u8981\u9ede\u3002\u5f9e\u5be6\u9ad4\u3001\u5c6c\u6027\u548c\u95dc\u4fc2\u7684\u57fa\u672c\u6982\u5ff5\u51fa\u767c\uff0c\u6211\u5011\u6df1\u5165\u63a2\u8a0e\u4e86\u57fa\u6578\u3001ER\u5716\u7684\u5efa\u7acb\uff0c\u4ee5\u53ca\u5be6\u9ad4\u8207\u8868\u683c\u4e4b\u9593\u7684\u5340\u5225\u3002\u6211\u5011\u4e5f\u9032\u4e00\u6b65\u63a2\u8a0e\u4e86\u66f4\u9032\u968e\u7684\u4e3b\u984c\uff0c\u4f8b\u5982\u5f31\u5be6\u9ad4\u3001\u95dc\u4fc2\u5c6c\u6027\u3001\u5b50\u985e\u578b\u548c\u905e\u8ff4\u95dc\u4fc2\u3002<\/p>\n<p>\u96a8\u8457\u60a8\u7e7c\u7e8c\u6df1\u5165\u8cc7\u6599\u5eab\u7ba1\u7406\u7684\u4e16\u754c\uff0c\u9019\u4e9b\u7b54\u6848\u5c07\u6210\u70ba\u60a8\u73cd\u8cb4\u7684\u53c3\u8003\u4f9d\u64da\uff0c\u78ba\u4fdd\u60a8\u80fd\u4ee5\u4fe1\u5fc3\u8207\u5c08\u696d\u77e5\u8b58\u4f86\u9762\u5c0dER\u5efa\u6a21\u3002\u6709\u6548\u7684\u8cc7\u6599\u5eab\u8a2d\u8a08\u53d6\u6c7a\u65bc\u5c0dER\u5efa\u6a21\u7684\u6df1\u5165\u7406\u89e3\uff0c\u56e0\u6b64\u672c\u5e38\u898b\u554f\u984c\u96c6\u662f\u4efb\u4f55\u5f9e\u4e8b\u8cc7\u6599\u7ba1\u7406\u6216\u8cc7\u6599\u5eab\u958b\u767c\u4eba\u54e1\u4e0d\u53ef\u6216\u7f3a\u7684\u8cc7\u6e90\u3002<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><button class=\"cursor-pointer absolute right-6 bottom-[124px] md:bottom-[180px] lg:bottom-[120px] z-10 rounded-full border border-gray-200 bg-gray-50 text-gray-600 dark:border-white\/10 dark:bg-white\/10 dark:text-gray-200\"><\/button><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7c21\u4ecb \u5be6\u9ad4-\u95dc\u4fc2 (ER) \u5efa\u6a21\u662f\u6709\u6548\u8cc7\u6599\u5eab\u8a2d\u8a08\u7684\u57fa\u77f3\uff0c\u63d0\u4f9b\u4e00\u7a2e\u7d50\u69cb\u5316\u7684\u65b9\u6cd5\u4f86\u8868\u793a\u548c\u5b9a\u7fa9\u8cc7\u6599\u5eab\u7cfb\u7d71\u4e2d\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u4fc2\u3002\u7121\u8ad6\u60a8\u662f\u7d93\u9a57\u8c50\u5bcc\u7684\u8cc7\u6599\u5eab\u5c08\u696d\u4eba\u58eb\uff0c\u9084\u662f\u525b\u8e0f\u5165\u8cc7\u6599\u7ba1\u7406\u4e16\u754c\u7684\u5b78\u751f\uff0cER \u5efa\u6a21\u90fd\u662f\u60a8\u5fc5\u5b9a\u6703\u9047\u5230\u4e26\u52a0\u4ee5\u904b\u7528\u7684\u6982\u5ff5\u3002\u5728\u9019\u4efd\u5168\u9762\u6307\u5357\u4e2d\uff0c\u6211\u5011\u56de\u7b54\u4e86\u95dc\u65bc ER \u5efa\u6a21\u6700\u5e38\u898b\u7684\u554f\u984c\uff08FAQ\uff09\uff0c\u70ba\u60a8\u63d0\u4f9b\u5c0d\u6b64\u95dc\u9375\u5b78\u79d1\u57fa\u672c\u539f\u7406\u8207\u7d30\u7bc0\u7684\u6df1\u5165\u7406\u89e3\u3002\u5f9e\u7406\u89e3\u5be6\u9ad4\u3001\u5c6c\u6027\u8207\u95dc\u4fc2\uff0c\u5230\u638c\u63e1\u57fa\u6578\u4e26\u8655\u7406\u8907\u96dc\u60c5\u5883\uff0c\u672c FAQ \u662f\u60a8\u89e3\u958b ER \u5efa\u6a21\u8ff7\u601d\u7684\u9996\u9078\u8cc7\u6e90\u3002 1. \u4ec0\u9ebc\u662f\u5be6\u9ad4-\u95dc\u4fc2 (ER) \u5efa\u6a21\uff1f ER \u5efa\u6a21\u662f\u4e00\u7a2e\u7528\u65bc\u8996\u89ba\u5316\u548c\u63cf\u8ff0\u8cc7\u6599\u5eab\u4e2d\u5132\u5b58\u8cc7\u6599\u7684\u65b9\u6cd5\u3002\u5b83\u5305\u62ec\u5b9a\u7fa9\u5be6\u9ad4\uff08\u7269\u4ef6\u6216\u6982\u5ff5\uff09\u3001\u5b83\u5011\u7684\u5c6c\u6027\uff08\u7279\u6027\uff09\u4ee5\u53ca\u5b83\u5011\u4e4b\u9593\u7684\u95dc\u4fc2\u3002ER \u5716\u8868\u662f\u9019\u4e9b\u6982\u5ff5\u7684\u5716\u5f62\u5316\u8868\u793a\uff0c\u4f7f\u8cc7\u6599\u5eab\u7d50\u69cb\u7684\u8a2d\u8a08\u8207\u7406\u89e3\u8b8a\u5f97\u66f4\u5bb9\u6613\u3002 2. \u4ec0\u9ebc\u662f\u5be6\u9ad4\u8207\u5c6c\u6027\uff1f \u5be6\u9ad4\u662f\u8cc7\u6599\u5eab\u4e2d\u7684\u57fa\u672c\u7269\u4ef6\u6216\u6982\u5ff5\u3002\u5c6c\u6027\u662f\u7528\u4f86\u63cf\u8ff0\u9019\u4e9b\u5be6\u9ad4\u7684\u7279\u6027\u3002\u4f8b\u5982\uff0c\u5728\u5716\u66f8\u9928\u7684\u8cc7\u6599\u5eab\u4e2d\uff0c\u201c\u66f8\u7c4d\u201d\u53ef\u80fd\u662f\u4e00\u500b\u5be6\u9ad4\uff0c\u800c\u201c\u66f8\u7c4d\u201d\u5be6\u9ad4\u7684\u5c6c\u6027\u53ef\u80fd\u5305\u62ec\u201c\u66f8\u540d\u201d\u3001\u201c\u4f5c\u8005\u201d\u548c\u201cISBN\u201d\u3002 3. \u5728 ER \u5efa\u6a21\u4e2d\uff0c\u4ec0\u9ebc\u662f\u95dc\u4fc2\uff1f \u95dc\u4fc2\u4ee3\u8868\u5169\u500b\u6216\u591a\u500b\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u806f\u3002\u5b83\u5b9a\u7fa9\u4e86\u5be6\u9ad4\u5728\u8cc7\u6599\u5eab\u4e2d\u5982\u4f55\u76f8\u4e92\u9023\u63a5\u3002\u95dc\u4fc2\u53ef\u4ee5\u662f\u4e00\u5c0d\u4e00\u3001\u4e00\u5c0d\u591a\u6216\u591a\u5c0d\u591a\uff0c\u5177\u9ad4\u53d6\u6c7a\u65bc\u5be6\u9ad4\u4e4b\u9593\u9023\u63a5\u7684\u57fa\u6578\u3002 4. \u5728 ER \u5efa\u6a21\u4e2d\uff0c\u57fa\u6578\u662f\u4ec0\u9ebc\uff1f \u57fa\u6578\u6307\u660e\u4e00\u500b\u5be6\u9ad4\u7684\u51fa\u73fe\u6b21\u6578\uff0c\u53ef\u4ee5\u8207\u53e6\u4e00\u500b\u5be6\u9ad4\u7684\u51fa\u73fe\u6b21\u6578\u900f\u904e\u95dc\u4fc2\u76f8\u9023\u3002\u5e38\u898b\u7684\u57fa\u6578\u5305\u62ec\u300c\u4e00\u500b\u300d\uff081\uff09\u3001\u300c\u96f6\u500b\u6216\u4e00\u500b\u300d\uff080..1\uff09\u3001\u300c\u96f6\u500b\u6216\u591a\u500b\u300d\uff080..\uff09\uff0c\u4ee5\u53ca\u300c\u4e00\u500b\u6216\u591a\u500b\u300d\uff081..). 5. \u6211\u8a72\u5982\u4f55\u5efa\u7acb ER \u5716\uff1f \u8981\u5efa\u7acb ER \u5716\uff0c\u9996\u5148\u61c9\u8b58\u5225\u5be6\u9ad4\u3001\u5b83\u5011\u7684\u5c6c\u6027\u4ee5\u53ca\u5b83\u5011\u4e4b\u9593\u7684\u95dc\u4fc2\u3002\u63a5\u8457\uff0c\u4f7f\u7528\u5c08\u696d\u8edf\u9ad4\u6216\u7e6a\u5716\u5de5\u5177\u4f86\u5efa\u7acb\u5716\u5f62\u5316\u8868\u793a\u3002\u5e38\u898b\u7684 ER \u5efa\u6a21\u5de5\u5177\u5305\u62ec Lucidchart\u3001draw.io \u548c ERDPlus\u3002 6. \u5be6\u9ad4\u8207\u8cc7\u6599\u8868\u4e4b\u9593\u6709\u4ec0\u9ebc\u5dee\u5225\uff1f ER \u5efa\u6a21\u4e2d\u7684\u5be6\u9ad4\u662f\u6982\u5ff5\u6027\u7684\u8868\u793a\uff0c\u800c\u8cc7\u6599\u8868\u662f\u95dc\u806f\u5f0f\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08RDBMS\uff09\u4e2d\u7684\u5be6\u9ad4\u7d50\u69cb\u3002\u5728\u8a2d\u8a08\u8cc7\u6599\u5eab\u6642\uff0c\u60a8\u6703\u5c07\u5be6\u9ad4\u5c0d\u61c9\u5230\u8cc7\u6599\u8868\uff0c\u4e26\u5c07\u5c6c\u6027\u5c0d\u61c9\u5230\u9019\u4e9b\u8cc7\u6599\u8868\u4e2d\u7684\u6b04\u4f4d\u3002 7. \u6211\u53ef\u4ee5\u5728\u95dc\u4fc2\u4e2d\u64c1\u6709\u5c6c\u6027\u55ce\uff1f \u662f\u7684\uff0c\u5c6c\u6027\u53ef\u4ee5\u8207\u95dc\u4fc2\u95dc\u806f\u3002\u9019\u4e9b\u7a31\u70ba\u95dc\u4fc2\u5c6c\u6027\uff0c\u53ef\u63d0\u4f9b\u6709\u95dc\u95dc\u806f\u672c\u8eab\u7684\u984d\u5916\u8cc7\u8a0a\u3002\u4f8b\u5982\uff0c\u5728\u300c\u5b78\u751f\u8a3b\u518a\u8ab2\u7a0b\u300d\u7684\u95dc\u4fc2\u4e2d\uff0c\u60a8\u53ef\u80fd\u6703\u6709\u300c\u8a3b\u518a\u65e5\u671f\u300d\u9019\u500b\u5c6c\u6027\u3002 8. \u4ec0\u9ebc\u662f ERD\uff1f ERD \u662f\u5be6\u9ad4-\u95dc\u4fc2\u5716\u7684\u7e2e\u5beb\u3002\u5b83\u662f\u8cc7\u6599\u5eab\u7cfb\u7d71\u4e2d\u5be6\u9ad4\u3001\u5c6c\u6027\u8207\u95dc\u4fc2\u7684\u8996\u89ba\u5316\u8868\u793a\u3002ERD \u5c0d\u65bc\u5229<a href=\"https:\/\/guides.visual-paradigm.com\/tw\/frequently-asked-questions-faq-for-entity-relationship-er-modeling\/\" rel=\"bookmark\"><span class=\"screen-reader-text\">\u5be6\u9ad4-\u95dc\u4fc2 (ER) \u5efa\u6a21\u5e38\u898b\u554f\u984c\u96c6 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\u5716\u8868\u662f\u9019\u4e9b\u6982\u5ff5\u7684\u5716\u5f62\u5316\u8868\u793a\uff0c\u4f7f\u8cc7\u6599\u5eab\u7d50\u69cb\u7684\u8a2d\u8a08\u8207\u7406\u89e3\u8b8a\u5f97\u66f4\u5bb9\u6613\u3002 2. \u4ec0\u9ebc\u662f\u5be6\u9ad4\u8207\u5c6c\u6027\uff1f \u5be6\u9ad4\u662f\u8cc7\u6599\u5eab\u4e2d\u7684\u57fa\u672c\u7269\u4ef6\u6216\u6982\u5ff5\u3002\u5c6c\u6027\u662f\u7528\u4f86\u63cf\u8ff0\u9019\u4e9b\u5be6\u9ad4\u7684\u7279\u6027\u3002\u4f8b\u5982\uff0c\u5728\u5716\u66f8\u9928\u7684\u8cc7\u6599\u5eab\u4e2d\uff0c\u201c\u66f8\u7c4d\u201d\u53ef\u80fd\u662f\u4e00\u500b\u5be6\u9ad4\uff0c\u800c\u201c\u66f8\u7c4d\u201d\u5be6\u9ad4\u7684\u5c6c\u6027\u53ef\u80fd\u5305\u62ec\u201c\u66f8\u540d\u201d\u3001\u201c\u4f5c\u8005\u201d\u548c\u201cISBN\u201d\u3002 3. \u5728 ER \u5efa\u6a21\u4e2d\uff0c\u4ec0\u9ebc\u662f\u95dc\u4fc2\uff1f \u95dc\u4fc2\u4ee3\u8868\u5169\u500b\u6216\u591a\u500b\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u806f\u3002\u5b83\u5b9a\u7fa9\u4e86\u5be6\u9ad4\u5728\u8cc7\u6599\u5eab\u4e2d\u5982\u4f55\u76f8\u4e92\u9023\u63a5\u3002\u95dc\u4fc2\u53ef\u4ee5\u662f\u4e00\u5c0d\u4e00\u3001\u4e00\u5c0d\u591a\u6216\u591a\u5c0d\u591a\uff0c\u5177\u9ad4\u53d6\u6c7a\u65bc\u5be6\u9ad4\u4e4b\u9593\u9023\u63a5\u7684\u57fa\u6578\u3002 4. \u5728 ER \u5efa\u6a21\u4e2d\uff0c\u57fa\u6578\u662f\u4ec0\u9ebc\uff1f \u57fa\u6578\u6307\u660e\u4e00\u500b\u5be6\u9ad4\u7684\u51fa\u73fe\u6b21\u6578\uff0c\u53ef\u4ee5\u8207\u53e6\u4e00\u500b\u5be6\u9ad4\u7684\u51fa\u73fe\u6b21\u6578\u900f\u904e\u95dc\u4fc2\u76f8\u9023\u3002\u5e38\u898b\u7684\u57fa\u6578\u5305\u62ec\u300c\u4e00\u500b\u300d\uff081\uff09\u3001\u300c\u96f6\u500b\u6216\u4e00\u500b\u300d\uff080..1\uff09\u3001\u300c\u96f6\u500b\u6216\u591a\u500b\u300d\uff080..\uff09\uff0c\u4ee5\u53ca\u300c\u4e00\u500b\u6216\u591a\u500b\u300d\uff081..). 5. \u6211\u8a72\u5982\u4f55\u5efa\u7acb 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