{"id":6549,"date":"2026-02-05T09:40:32","date_gmt":"2026-02-05T01:40:32","guid":{"rendered":"https:\/\/guides.visual-paradigm.com\/cn\/class-diagram-vs-entity-relationship-diagram-erd-a-comparative-guide\/"},"modified":"2026-02-05T09:40:32","modified_gmt":"2026-02-05T01:40:32","slug":"class-diagram-vs-entity-relationship-diagram-erd-a-comparative-guide","status":"publish","type":"post","link":"https:\/\/guides.visual-paradigm.com\/cn\/class-diagram-vs-entity-relationship-diagram-erd-a-comparative-guide\/","title":{"rendered":"\u7c7b\u56fe\u4e0e\u5b9e\u4f53-\u5173\u7cfb\u56fe\uff08ERD\uff09\uff1a\u6bd4\u8f83\u6307\u5357"},"content":{"rendered":"

\u5f15\u8a00<\/h2>\n

\u7c7b\u56fe\u548c\u5b9e\u4f53-\u5173\u7cfb\u56fe\uff08ERD\uff09\u662f\u8f6f\u4ef6\u548c\u6570\u636e\u5e93\u8bbe\u8ba1\u4e2d\u7684\u4e24\u79cd\u91cd\u8981\u5de5\u5177\u3002\u5c3d\u7ba1\u5b83\u4eec\u6709\u4e00\u4e9b\u76f8\u4f3c\u4e4b\u5904\uff0c\u4f46\u7528\u9014\u4e0d\u540c\uff0c\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u573a\u666f\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u8fd9\u4e24\u79cd\u56fe\u793a\u7c7b\u578b\u4e4b\u95f4\u7684\u5dee\u5f02\uff0c\u63d0\u4f9b\u793a\u4f8b\uff0c\u5e76\u8ba8\u8bba\u4f55\u65f6\u4f7f\u7528\u6bcf\u4e00\u79cd\u3002<\/p>\n

\u7c7b\u56fe<\/strong><\/h2>\n

\u76ee\u7684\uff1a<\/strong><\/h3>\n

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\u5143\u7d20\uff1a<\/strong><\/h3>\n
    \n
  1. \u7c7b\uff1a<\/strong> \u8868\u793a\u5bf9\u8c61\u7684\u84dd\u56fe\uff0c\u5b9a\u4e49\u5176\u5c5e\u6027\uff08\u6570\u636e\u6210\u5458\uff09\u548c\u65b9\u6cd5\uff08\u51fd\u6570\uff09\u3002<\/li>\n
  2. \u5173\u8054\uff1a<\/strong> \u63cf\u8ff0\u7c7b\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u5305\u62ec\u4e00\u5bf9\u4e00\u3001\u4e00\u5bf9\u591a\u548c\u591a\u5bf9\u591a\u5173\u8054\u3002<\/li>\n
  3. \u7ee7\u627f\uff1a<\/strong> \u63cf\u8ff0\u7ee7\u627f\u5c42\u6b21\u7ed3\u6784\uff0c\u8868\u660e\u54ea\u4e9b\u7c7b\u4ece\u5176\u4ed6\u7c7b\u7ee7\u627f\u3002<\/li>\n
  4. \u805a\u5408\u4e0e\u7ec4\u5408\uff1a<\/strong> \u8868\u793a\u6574\u4f53-\u90e8\u5206\u5b9e\u4f53\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u4f8b\u5982\u6c7d\u8f66\u4e0e\u5176\u53d1\u52a8\u673a\u3002<\/li>\n
  5. \u5c5e\u6027\u4e0e\u64cd\u4f5c\uff1a<\/strong> \u5c55\u793a\u7c7b\u7684\u5c5e\u6027\uff08\u5c5e\u6027\uff09\u548c\u884c\u4e3a\uff08\u65b9\u6cd5\uff09\u3002<\/li>\n<\/ol>\n

    \u793a\u4f8b\uff1a<\/strong><\/h3>\n

    \u8ba9\u6211\u4eec\u8003\u8651\u4e00\u4e2a\u4f7f\u7528\u7c7b\u56fe\u8868\u793a\u56fe\u4e66\u9986\u7cfb\u7edf\u7684\u7b80\u5316\u793a\u4f8b\uff1a<\/p>\n

    <\/p>\n

    \u5728\u8fd9\u4e2a\u7c7b\u56fe\u4e2d\uff0c\u6211\u4eec\u6709\u8bf8\u5982\u56fe\u4e66\u9986<\/code>, \u4e66\u7c4d<\/code>\uff0c\u4ee5\u53ca\u4f5c\u8005<\/code>\uff0c\u5c55\u793a\u5b83\u4eec\u7684\u5c5e\u6027\u548c\u5173\u8054\u3002<\/p>\n

    \u5b9e\u4f53-\u5173\u7cfb\u56fe\uff08ERD\uff09<\/strong><\/h2>\n

    \u76ee\u7684\uff1a<\/strong><\/h3>\n

    ERD\u4e3b\u8981\u7528\u4e8e\u6570\u636e\u5e93\u8bbe\u8ba1\u4e2d\uff0c\u7528\u6765\u8868\u793a\u6570\u636e\u5e93\u5185\u5b9e\u4f53\uff08\u8868\uff09\u7684\u7ed3\u6784\u548c\u5173\u7cfb\u3002\u5b83\u4e13\u6ce8\u4e8e\u6355\u6349\u6570\u636e\u6a21\u578b\uff0c\u5305\u62ec\u5b9e\u4f53\u3001\u5c5e\u6027\u548c\u5173\u7cfb\u3002<\/p>\n

    \u5143\u7d20\uff1a<\/strong><\/h3>\n
      \n
    1. \u5b9e\u4f53\uff1a<\/strong> \u8868\u793a\u5173\u7cfb\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u4e2a\u8868\uff0c\u901a\u5e38\u5bf9\u5e94\u73b0\u5b9e\u4e16\u754c\u4e2d\u7684\u5bf9\u8c61\u6216\u6982\u5ff5\u3002<\/li>\n
    2. \u5c5e\u6027\uff1a<\/strong> \u63cf\u8ff0\u5b9e\u4f53\u7684\u5c5e\u6027\u6216\u5b57\u6bb5\u3002<\/li>\n
    3. \u5173\u7cfb\uff1a<\/strong> \u63cf\u8ff0\u5b9e\u4f53\u4e4b\u95f4\u7684\u5173\u8054\u5173\u7cfb\uff0c\u5305\u62ec\u4e00\u5bf9\u4e00\u3001\u4e00\u5bf9\u591a\u548c\u591a\u5bf9\u591a\u5173\u7cfb\u3002<\/li>\n
    4. \u4e3b\u952e\uff1a<\/strong> \u6807\u8bc6\u4e00\u4e2a\u552f\u4e00\u5c5e\u6027\u6216\u5c5e\u6027\u7ec4\u5408\uff0c\u7528\u4e8e\u552f\u4e00\u6807\u8bc6\u6bcf\u4e2a\u5b9e\u4f53\u5b9e\u4f8b\u3002<\/li>\n
    5. \u5916\u952e\uff1a<\/strong> \u8868\u793a\u5b9e\u4f53\u4e4b\u95f4\u7684\u8fde\u63a5\uff0c\u5e76\u5728\u6570\u636e\u5e93\u4e2d\u5f3a\u5236\u5b9e\u65bd\u5f15\u7528\u5b8c\u6574\u6027\u3002<\/li>\n<\/ol>\n

      \u793a\u4f8b\uff1a<\/strong><\/h3>\n

      \u8ba9\u6211\u4eec\u8003\u8651\u4e00\u4e2a\u7b80\u5316\u7684\u7535\u5b50\u5546\u52a1\u7cfb\u7edf\u7684ERD\uff1a<\/p>\n

      <\/p>\n

      \u5728\u8fd9\u4e2aERD\u4e2d\uff0c\u6211\u4eec\u6709\u5982\u4e0b\u5b9e\u4f53\uff1a\u5ba2\u6237<\/code>, \u8ba2\u5355<\/code>\uff0c\u4ee5\u53ca\u4ea7\u54c1<\/code>\uff0c\u4ee5\u53ca\u5b83\u4eec\u7684\u5c5e\u6027\u548c\u5173\u7cfb\u3002\u5916\u952e\uff08CustomerID<\/code>, ProductID<\/code>\uff09\u5efa\u7acb\u4e86\u8fd9\u4e9b\u5b9e\u4f53\u4e4b\u95f4\u7684\u8fde\u63a5\u3002<\/p>\n

      \u4f55\u65f6\u4f7f\u7528\u54ea\u79cd\uff1f<\/strong><\/h2>\n

      \u5728\u4ee5\u4e0b\u60c5\u51b5\u4f7f\u7528\u7c7b\u56fe\uff1a<\/strong><\/h3>\n
        \n
      1. \u8bbe\u8ba1\u9762\u5411\u5bf9\u8c61\u7cfb\u7edf\u65f6\uff1a<\/strong> \u5982\u679c\u60a8\u6b63\u5728\u4ece\u4e8b\u9762\u5411\u5bf9\u8c61\u7684\u8f6f\u4ef6\u9879\u76ee\uff0c\u5e76\u9700\u8981\u8868\u793a\u7c7b\u3001\u5bf9\u8c61\u53ca\u5176\u5173\u7cfb\uff0c\u5e94\u4f7f\u7528\u7c7b\u56fe\u3002<\/li>\n
      2. \u5efa\u6a21\u8f6f\u4ef6\u67b6\u6784\u65f6\uff1a<\/strong> \u7c7b\u56fe\u6709\u52a9\u4e8e\u53ef\u89c6\u5316\u8f6f\u4ef6\u7cfb\u7edf\u7684\u9759\u6001\u7ed3\u6784\uff0c\u5305\u62ec\u7c7b\u5c42\u6b21\u7ed3\u6784\u3001\u63a5\u53e3\u548c\u4f9d\u8d56\u5173\u7cfb\u3002<\/li>\n
      3. \u534f\u4f5c\u8bbe\u8ba1<\/strong> \u7c7b\u56fe\u901a\u5e38\u7528\u4e8e\u534f\u4f5c\u8bbe\u8ba1\u4f1a\u8bae\u4e2d\uff0c\u4ee5\u4fc3\u8fdb\u5f00\u53d1\u4eba\u5458\u3001\u8bbe\u8ba1\u5e08\u548c\u5229\u76ca\u76f8\u5173\u8005\u4e4b\u95f4\u7684\u8ba8\u8bba\u3002<\/li>\n<\/ol>\n

        \u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u4f7f\u7528\u5b9e\u4f53-\u5173\u7cfb\u56fe\uff1a<\/strong><\/h3>\n
          \n
        1. \u6570\u636e\u5e93\u8bbe\u8ba1\uff1a<\/strong> \u5728\u8bbe\u8ba1\u5173\u7cfb\u578b\u6570\u636e\u5e93\u65f6\uff0c\u4f7f\u7528ERD\u6765\u5b9a\u4e49\u8868\u3001\u5176\u5c5e\u6027\u4ee5\u53ca\u5b83\u4eec\u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/li>\n
        2. \u6570\u636e\u5efa\u6a21\uff1a<\/strong> ERD\u5bf9\u4e8e\u5efa\u6a21\u548c\u7406\u89e3\u6570\u636e\u9700\u6c42\u3001\u786e\u4fdd\u6570\u636e\u5b8c\u6574\u6027\u4ee5\u53ca\u7ec4\u7ec7\u6570\u636e\u5e93\u6a21\u5f0f\u81f3\u5173\u91cd\u8981\u3002<\/li>\n
        3. \u6570\u636e\u5e93\u6587\u6863\uff1a<\/strong> ERD\u53ef\u4f5c\u4e3a\u6570\u636e\u5e93\u7ba1\u7406\u5458\u548c\u5f00\u53d1\u4eba\u5458\u7684\u5b9d\u8d35\u6587\u6863\uff0c\u63cf\u8ff0\u6570\u636e\u5e93\u7684\u7ed3\u6784\u548c\u7ea6\u675f\u3002<\/li>\n<\/ol>\n

          \u603b\u7ed3\u7c7b\u56fe\u4e0eERD\u4e4b\u95f4\u7684\u5dee\u5f02<\/h2>\n

          \u4ee5\u4e0b\u8868\u683c\u5bf9\u6bd4\u4e86\u7c7b\u56fe\u4e0e\u5b9e\u4f53-\u5173\u7cfb\u56fe\uff08ERD\uff09\u5728\u5404\u4e2a\u65b9\u9762\u7684\u5dee\u5f02\uff1a<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
          \u65b9\u9762<\/th>\n\u7c7b\u56fe<\/th>\n\u5b9e\u4f53-\u5173\u7cfb\u56fe\uff08ERD\uff09<\/th>\n<\/tr>\n<\/thead>\n
          \u76ee\u7684<\/strong><\/td>\n\u8868\u793a\u9762\u5411\u5bf9\u8c61\u8bbe\u8ba1\u548c\u8f6f\u4ef6\u67b6\u6784\u4e2d\u7684\u7c7b\u3001\u5bf9\u8c61\u53ca\u5176\u5173\u7cfb\u3002<\/td>\n\u8868\u793a\u6570\u636e\u5e93\u8bbe\u8ba1\u548c\u6570\u636e\u5efa\u6a21\u4e2d\u7684\u5b9e\u4f53\u3001\u5c5e\u6027\u548c\u5173\u7cfb\u3002<\/td>\n<\/tr>\n
          \u4e3b\u8981\u5e94\u7528\u573a\u666f<\/strong><\/td>\n\u2013 \u9762\u5411\u5bf9\u8c61\u7684\u8f6f\u4ef6\u8bbe\u8ba1<br>- \u8f6f\u4ef6\u67b6\u6784\u5efa\u6a21<\/td>\n\u2013 \u5173\u7cfb\u578b\u6570\u636e\u5e93\u8bbe\u8ba1<br>- \u6570\u636e\u5efa\u6a21<\/td>\n<\/tr>\n
          \u5143\u7d20<\/strong><\/td>\n\u2013 \u7c7b<br>- \u5c5e\u6027<br>- \u65b9\u6cd5\uff08\u64cd\u4f5c\uff09<br>- \u5173\u8054<br>- \u7ee7\u627f<br>- \u805a\u5408\/\u7ec4\u5408<\/td>\n\u2013 \u5b9e\u4f53\uff08\u8868\uff09<br>- \u5c5e\u6027\uff08\u5217\uff09<br>- \u5173\u7cfb<br>- \u4e3b\u952e<br>- \u5916\u952e<\/td>\n<\/tr>\n
          \u57fa\u6570<\/strong><\/td>\n\u7528\u4e8e\u8868\u793a\u5bf9\u8c61\u6216\u7c7b\u4e4b\u95f4\u7684\u5173\u8054\u3002\u53ef\u4ee5\u8868\u793a\u591a\u91cd\u6027\uff08\u4f8b\u5982\uff0c\u4e00\u5bf9\u4e00\u3001\u4e00\u5bf9\u591a\uff09\u3002<\/td>\n\u7528\u4e8e\u8868\u793a\u6570\u636e\u5e93\u4e2d\u5b9e\u4f53\u4e4b\u95f4\u7684\u5173\u7cfb\uff08\u4f8b\u5982\uff0c\u4e00\u5bf9\u4e00\u3001\u4e00\u5bf9\u591a\uff09\u3002<\/td>\n<\/tr>\n
          \u7b26\u53f7\u8868\u793a<\/strong><\/td>\n\u2013 \u5e26\u6709\u5c5e\u6027\u548c\u65b9\u6cd5\u5206\u9694\u533a\u7684\u7c7b<br>- \u5e26\u7bad\u5934\u7684\u7ebf\u8868\u793a\u5173\u8054<\/td>\n\u2013 \u5b9e\u4f53\uff08\u8868\uff09\u7528\u77e9\u5f62\u8868\u793a<br>- \u5173\u7cfb\u7528\u83f1\u5f62\u8868\u793a<br>- \u5c5e\u6027\u7528\u692d\u5706\u8868\u793a<\/td>\n<\/tr>\n
          \u5173\u6ce8\u70b9<\/strong><\/td>\n\u5173\u6ce8\u8f6f\u4ef6\u7cfb\u7edf\u7684\u9759\u6001\u7ed3\u6784\u3002<\/td>\n\u4e13\u6ce8\u4e8e\u6355\u6349\u6570\u636e\u6a21\u578b\uff0c\u5f3a\u8c03\u6570\u636e\u548c\u5173\u7cfb\u3002<\/td>\n<\/tr>\n
          \u5bf9\u7f16\u7a0b\u8303\u5f0f\u7684\u4f9d\u8d56<\/strong><\/td>\n\u4e0e\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u8303\u5f0f\u5bc6\u5207\u76f8\u5173\u3002<\/td>\n\u72ec\u7acb\u4e8e\u7f16\u7a0b\u8303\u5f0f\uff1b\u53ef\u7528\u4e8e\u5404\u79cd\u7f16\u7a0b\u8bed\u8a00\u4e2d\u7684\u6570\u636e\u5e93\u3002<\/td>\n<\/tr>\n
          \u5728\u8f6f\u4ef6\u5f00\u53d1\u4e2d\u7684\u5e94\u7528<\/strong><\/td>\n\u5e38\u7528\u4e8e\u9762\u5411\u5bf9\u8c61\u7684\u8f6f\u4ef6\u5f00\u53d1\u548c\u57fa\u4e8eUML\u7684\u5efa\u6a21\u3002<\/td>\n\u5bf9\u4e8e\u6570\u636e\u5e93\u8bbe\u8ba1\u3001\u6a21\u5f0f\u5f00\u53d1\u548c\u786e\u4fdd\u6570\u636e\u5b8c\u6574\u6027\u81f3\u5173\u91cd\u8981\u3002<\/td>\n<\/tr>\n
          \u534f\u4f5c\u8bbe\u8ba1<\/strong><\/td>\n\u4fc3\u8fdb\u5f00\u53d1\u4eba\u5458\u548c\u5229\u76ca\u76f8\u5173\u8005\u4e4b\u95f4\u7684\u534f\u4f5c\u8bbe\u8ba1\u8ba8\u8bba\u3002<\/td>\n\u5e2e\u52a9\u6570\u636e\u5e93\u7ba1\u7406\u5458\u548c\u5f00\u53d1\u4eba\u5458\u521b\u5efa\u548c\u8bb0\u5f55\u6570\u636e\u5e93\u6a21\u5f0f\u3002<\/td>\n<\/tr>\n
          \u53ef\u6269\u5c55\u6027<\/strong><\/td>\n\u53ef\u6269\u5c55\u4ee5\u878d\u5165\u8f6f\u4ef6\u8bbe\u8ba1\u6a21\u5f0f\u3001\u63a5\u53e3\u548c\u67b6\u6784\u6982\u5ff5\u3002<\/td>\n\u5728\u8868\u793a\u4e0e\u6570\u636e\u5e93\u65e0\u5173\u7684\u8f6f\u4ef6\u8bbe\u8ba1\u6a21\u5f0f\u65b9\u9762\u53ef\u6269\u5c55\u6027\u8f83\u4f4e\u3002<\/p>\n

          \u00a0<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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