![\"Kawaii-style](\"https:\/\/www.we-notes.com\/wp-content\/uploads\/2026\/04\/erd-notations-kawaii-comparison-infographic.jpg\"\/)
<\/figure>\n<\/div>\n\ud83c\udfdb\ufe0f Chen\u8868\u793a\u6cd5\uff1a\u5386\u53f2\u57fa\u7840<\/h2>\n
\u7531\u5f7c\u5f97\u00b7\u9648\u4e8e1976\u5e74\u63d0\u51fa\uff0cChen\u8868\u793a\u6cd5\u662fER\u5efa\u6a21\u7684\u9f3b\u7956\u3002\u5b83\u4e13\u4e3a\u4e1a\u52a1\u5206\u6790\u5e08\u548c\u975e\u6280\u672f\u5229\u76ca\u76f8\u5173\u8005\u8bbe\u8ba1\uff0c\u5177\u6709\u76f4\u89c2\u6027\u3002\u5176\u89c6\u89c9\u8bed\u8a00\u72ec\u5177\u7279\u8272\uff0c\u4e3b\u8981\u4f9d\u8d56\u51e0\u4f55\u5f62\u72b6\u6765\u8868\u793a\u6570\u636e\u5e93\u7406\u8bba\u7684\u6838\u5fc3\u6982\u5ff5\u3002<\/p>\n
\u6838\u5fc3\u8bed\u6cd5\u4e0e\u89c6\u89c9\u5143\u7d20<\/h3>\n\n- \n
\u5b9e\u4f53\uff1a<\/strong> \u7528\u77e9\u5f62\u8868\u793a\u3002\u77e9\u5f62\u4e2d\u5305\u542b\u4e3b\u952e\u548c\u5c5e\u6027\u3002<\/p>\n<\/li>\n- \n
\u5c5e\u6027\uff1a<\/strong> \u7528\u8fde\u63a5\u5230\u5b9e\u4f53\u77e9\u5f62\u7684\u692d\u5706\u8868\u793a\u3002\u4e3b\u952e\u901a\u5e38\u7528\u4e0b\u5212\u7ebf\u6807\u51fa\u3002<\/p>\n<\/li>\n- \n
\u5173\u7cfb\uff1a<\/strong> \u7528\u8fde\u63a5\u4e24\u4e2a\u5b9e\u4f53\u7684\u83f1\u5f62\u8868\u793a\u3002<\/p>\n<\/li>\n- \n
\u57fa\u6570\uff1a<\/strong> \u901a\u8fc7\u8fde\u63a5\u83f1\u5f62\u4e0e\u5b9e\u4f53\u7684\u7ebf\u6761\u8868\u793a\uff0c\u901a\u5e38\u7528\u6570\u5b57\u6216\u5b57\u6bcd\uff081\u3001N\u3001M\uff09\u6807\u6ce8\u3002<\/p>\n<\/li>\n- \n
\u5f31\u5b9e\u4f53\uff1a<\/strong> \u7528\u53cc\u7ebf\u77e9\u5f62\u8868\u793a\uff0c\u8868\u660e\u5176\u5b58\u5728\u4f9d\u8d56\u4e8e\u7236\u5b9e\u4f53\u3002<\/p>\n<\/li>\n- \n
\u6807\u8bc6\u6027\u5173\u7cfb\uff1a<\/strong> \u7528\u53cc\u7ebf\u8fde\u63a5\u5f31\u5b9e\u4f53\u4e0e\u5176\u7236\u5b9e\u4f53\u6765\u8868\u793a\u3002<\/p>\n<\/li>\n<\/ul>\n\u4f18\u52bf\u4e0e\u5e94\u7528\u573a\u666f<\/h3>\n
Chen\u8868\u793a\u6cd5\u5728\u9700\u8981\u5411\u4e0d\u7f16\u5199SQL\u7684\u4eba\u89e3\u91ca\u6570\u636e\u5e93\u8bbe\u8ba1\u7684\u573a\u666f\u4e2d\u8868\u73b0\u4f18\u5f02\u3002\u5176\u4f7f\u7528\u692d\u5706\u548c\u83f1\u5f62\uff0c\u80fd\u975e\u5e38\u6e05\u6670\u5730\u533a\u5206\u4e00\u4e2a\u4e8b\u7269\uff08\u5b9e\u4f53\uff09\u4e0e\u4e00\u4e2a\u52a8\u4f5c\uff08\u5173\u7cfb\uff09\u3002<\/p>\n
\n- \n
\u9057\u7559\u7cfb\u7edf\u6587\u6863\uff1a<\/strong> \u8bb8\u591a\u65e7\u7cfb\u7edf\u90fd\u662f\u4f7f\u7528\u6b64\u6807\u51c6\u8bbe\u8ba1\u7684\u3002\u4fdd\u6301\u4e0e\u5386\u53f2\u56fe\u793a\u7684\u4e00\u81f4\u6027\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/li>\n- \n
\u9ad8\u5c42\u6b21\u4e1a\u52a1\u5206\u6790\uff1a<\/strong> \u5728\u4e0e\u4ea7\u54c1\u7ecf\u7406\u8ba8\u8bba\u6570\u636e\u9700\u6c42\u65f6\uff0c\u83f1\u5f62\u5f62\u72b6\u80fd\u6e05\u6670\u5730\u8868\u660e\u4e24\u4e2a\u4e1a\u52a1\u6982\u5ff5\u4e4b\u95f4\u7684\u5173\u8054\u3002<\/p>\n<\/li>\n- \n
\u5b66\u672f\u4e0e\u7406\u8bba\u80cc\u666f\uff1a<\/strong> \u8ba1\u7b97\u673a\u79d1\u5b66\u8bfe\u7a0b\u901a\u5e38\u9996\u5148\u6559\u6388Chen\u8868\u793a\u6cd5\uff0c\u4ee5\u5efa\u7acb\u7406\u8bba\u57fa\u7840\uff0c\u7136\u540e\u518d\u8f6c\u5411\u7279\u5b9a\u5b9e\u73b0\u7684\u98ce\u683c\u3002<\/p>\n<\/li>\n<\/ul>\n\u7136\u800c\uff0c\u5f53\u5173\u7cfb\u590d\u6742\u65f6\uff0c\u8be5\u8868\u793a\u6cd5\u53ef\u80fd\u53d8\u5f97\u6742\u4e71\u3002\u5728Chen\u8868\u793a\u6cd5\u4e2d\uff0c\u4e09\u5143\u5173\u7cfb\uff08\u4e09\u4e2a\u5b9e\u4f53\u4e4b\u95f4\u7684\u5173\u7cfb\uff09\u5bb9\u6613\u53ef\u89c6\u5316\uff0c\u4f46\u82e5\u65e0\u989d\u5916\u89e3\u91ca\uff0c\u5f88\u96be\u76f4\u63a5\u6620\u5c04\u5230\u5173\u7cfb\u6570\u636e\u5e93\u7684\u7ea6\u675f\u4e0a\u3002<\/p>\n
\ud83e\uddb5 Crow’s Foot\u8868\u793a\u6cd5\uff1a\u5173\u7cfb\u6807\u51c6<\/h2>\n
\u4e5f\u79f0\u4e3aIE\uff08\u4fe1\u606f\u5de5\u7a0b\uff09\u8868\u793a\u6cd5\uff0cCrow’s Foot\u572820\u4e16\u7eaa\u672b\u6210\u4e3a\u5173\u7cfb\u6570\u636e\u5e93\u8bbe\u8ba1\u7684\u4e8b\u5b9e\u6807\u51c6\u3002\u5b83\u5bf9\u6570\u636e\u5e93\u7ba1\u7406\u5458\u548c\u540e\u7aef\u5de5\u7a0b\u5e08\u975e\u5e38\u5b9e\u7528\u3002\u540d\u79f0\u6765\u6e90\u4e8e\u8868\u793a\u5173\u7cfb\u4e2d\u201c\u591a\u201d\u7aef\u7684\u5f62\u72b6\uff0c\u5176\u5916\u5f62\u7c7b\u4f3c\u4e8e\u4e4c\u9e26\u7684\u811a\u3002<\/p>\n
\u6838\u5fc3\u8bed\u6cd5\u4e0e\u89c6\u89c9\u5143\u7d20<\/h3>\n\n- \n
\u5b9e\u4f53\uff1a<\/strong> \u7528\u77e9\u5f62\u8868\u793a\uff08\u5728\u73b0\u4ee3\u5de5\u5177\u4e2d\u901a\u5e38\u4ec5\u4e3a\u8868\u540d\uff09\u3002<\/p>\n<\/li>\n- \n
\u5173\u7cfb\uff1a<\/strong> \u7528\u76f4\u7ebf\u8fde\u63a5\u8868\u6765\u8868\u793a\u3002<\/p>\n<\/li>\n- \n
\u57fa\u6570\uff08\u201c\u4e4c\u9e26\u722a\u201d\u7b26\u53f7\uff09\uff1a<\/strong> \u4e00\u4e2a\u4e09\u53c9\u7b26\u53f7\uff08\u50cf\u4e4c\u9e26\u7684\u722a\u5b50\uff09\u8868\u793a\u5173\u7cfb\u7684\u201c\u591a\u201d\u7aef\u3002<\/p>\n<\/li>\n- \n
\u53c2\u4e0e\u6027\uff1a<\/strong> \u4e00\u6761\u6a2a\u7ebf\uff08|\uff09\u8868\u793a\u5f3a\u5236\u53c2\u4e0e\uff08\u5fc5\u987b\u5b58\u5728\uff09\uff0c\u800c\u4e00\u4e2a\u5706\u5708\uff08o\uff09\u8868\u793a\u53ef\u9009\u53c2\u4e0e\uff08\u53ef\u4ee5\u4e3a\u7a7a\uff09\u3002<\/p>\n<\/li>\n- \n
\u4e3b\u952e\uff1a<\/strong> \u901a\u5e38\u7528\u94a5\u5319\u56fe\u6807\u6216\u5c5e\u6027\u65c1\u8fb9\u7684\u7279\u5b9a\u6587\u672c\u6ce8\u91ca\u8868\u793a\u3002<\/p>\n<\/li>\n<\/ul>\n \u4f18\u52bf\u4e0e\u5e94\u7528\u573a\u666f<\/h3>\n
\u4e4c\u9e26\u722a\u7b26\u53f7\u88ab\u4f18\u5316\u4e3a\u53ef\u76f4\u63a5\u6620\u5c04\u5230 SQL DDL \u8bed\u53e5\u3002\u5982\u679c\u4f60\u5728\u7f16\u5199\u6a21\u5f0f\uff0c\u8fd9\u5f88\u53ef\u80fd\u662f\u4f60\u4f7f\u7528\u7684\u89c6\u89c9\u8bed\u8a00\u3002<\/p>\n
\n- \n
\u5173\u7cfb\u578b\u6570\u636e\u5e93\u8bbe\u8ba1\uff1a<\/strong> \u5b83\u80fd\u6e05\u6670\u5730\u6620\u5c04\u5230 PostgreSQL\u3001MySQL \u6216 SQL Server \u7b49 SQL \u6570\u636e\u5e93\u4e2d\u7684\u5916\u952e\u548c\u4e3b\u952e\u3002<\/p>\n<\/li>\n- \n
\u6a21\u5f0f\u6587\u6863\uff1a<\/strong> \u5b83\u662f\u5de5\u7a0b\u56e2\u961f\u5185\u90e8\u6280\u672f\u6587\u6863\u7684\u884c\u4e1a\u6807\u51c6\u3002<\/p>\n<\/li>\n- \n
\u6570\u636e\u5b8c\u6574\u6027\u6e05\u6670\u6027\uff1a<\/strong> \u4f7f\u7528\u6a2a\u7ebf\u548c\u5706\u5708\u660e\u786e\u5b9a\u4e49\u4e86\u7a7a\u503c\u7ea6\u675f\uff0c\u8fd9\u5bf9\u540e\u7aef\u903b\u8f91\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/li>\n<\/ul>\n \u8be5\u7b26\u53f7\u6bd4\u9648\u6c0f\u8868\u793a\u6cd5\u66f4\u5177\u4f53\u3002\u5b83\u5047\u8bbe\u53d7\u4f17\u7406\u89e3\u8868\u548c\u5916\u952e\u7684\u6982\u5ff5\u3002\u8fd9\u4f7f\u5176\u4e0d\u592a\u9002\u5408\u9ad8\u5c42\u4e1a\u52a1\u4f1a\u8bae\uff0c\u4f46\u975e\u5e38\u9002\u5408\u6280\u672f\u51b2\u523a\u89c4\u5212\u3002<\/p>\n
\ud83d\udcd0 UML \u7c7b\u56fe\uff1a\u9762\u5411\u5bf9\u8c61\u7684\u6865\u6881<\/h2>\n
\u7edf\u4e00\u5efa\u6a21\u8bed\u8a00\uff08UML\uff09\u65e8\u5728\u8de8\u591a\u79cd\u8303\u5f0f\u6807\u51c6\u5316\u8f6f\u4ef6\u8bbe\u8ba1\u3002\u5c3d\u7ba1 UML \u6db5\u76d6\u591a\u79cd\u56fe\u8868\u7c7b\u578b\uff0c\u4f46\u7c7b\u56fe\u5728\u9762\u5411\u5bf9\u8c61\u4e0a\u4e0b\u6587\u4e2d\u6700\u5e38\u7528\u4e8e\u6570\u636e\u5e93\u5efa\u6a21\u3002\u5b83\u5f25\u5408\u4e86\u4ee3\u7801\u7ed3\u6784\u4e0e\u6570\u636e\u7ed3\u6784\u4e4b\u95f4\u7684\u5dee\u8ddd\u3002<\/p>\n
\u6838\u5fc3\u8bed\u6cd5\u4e0e\u89c6\u89c9\u5143\u7d20<\/h3>\n\n- \n
\u7c7b\uff1a<\/strong> \u77e9\u5f62\u5206\u4e3a\u4e09\u4e2a\u90e8\u5206\uff1a\u540d\u79f0\u3001\u5c5e\u6027\u548c\u64cd\u4f5c\uff08\u65b9\u6cd5\uff09\u3002<\/p>\n<\/li>\n- \n
\u5173\u7cfb\uff1a<\/strong> \u8fde\u63a5\u7c7b\u7684\u7ebf\u6761\uff0c\u5e26\u6709\u7279\u5b9a\u7bad\u5934\uff0c\u8868\u793a\u65b9\u5411\u548c\u7c7b\u578b\u3002<\/p>\n<\/li>\n- \n
\u5173\u8054\uff1a<\/strong> \u4e00\u6761\u7b80\u5355\u7684\u7ebf\u3002\u8868\u793a\u5b58\u5728\u67d0\u79cd\u5173\u7cfb\u3002<\/p>\n<\/li>\n- \n
\u805a\u5408\uff1a<\/strong> \u4e00\u7aef\u4e3a\u4e00\u4e2a\u7a7a\u5fc3\u83f1\u5f62\u3002\u8868\u793a\u201c\u6574\u4f53-\u90e8\u5206\u201d\u5173\u7cfb\uff0c\u5176\u4e2d\u90e8\u5206\u53ef\u4ee5\u72ec\u7acb\u5b58\u5728\u3002<\/p>\n<\/li>\n- \n
\u7ec4\u5408\uff1a<\/strong> \u5b9e\u5fc3\u83f1\u5f62\u3002\u8868\u793a\u4e25\u683c\u7684\u751f\u547d\u5468\u671f\u4f9d\u8d56\u5173\u7cfb\uff1b\u5982\u679c\u6574\u4f53\u6d88\u4ea1\uff0c\u5176\u90e8\u5206\u4e5f\u4f1a\u968f\u4e4b\u6d88\u4ea1\u3002<\/p>\n<\/li>\n- \n
\u591a\u91cd\u6027\uff1a<\/strong> \u6570\u5b57\u653e\u7f6e\u5728\u7ebf\u6761\u7684\u4e24\u7aef\uff08\u4f8b\u5982 0..1\u30011..*\u30010..*\uff09\u3002\u8fd9\u5728\u529f\u80fd\u4e0a\u7c7b\u4f3c\u4e8e Crow\u2019s Foot\uff0c\u4f46\u4f7f\u7528\u4e86\u6570\u5b66\u7b26\u53f7\u3002<\/p>\n<\/li>\n<\/ul>\n\u4f18\u52bf\u4e0e\u4f7f\u7528\u573a\u666f<\/h3>\n
\u5f53\u6570\u636e\u5e93\u5e76\u975e\u552f\u4e00\u5173\u6ce8\u70b9\u65f6\uff0cUML \u7c7b\u56fe\u81f3\u5173\u91cd\u8981\u3002\u5b83\u4eec\u662f\u540e\u7aef\u4ee3\u7801\u4e0e\u6301\u4e45\u5316\u5b58\u50a8\u5c42\u4e4b\u95f4\u7684\u8fde\u63a5\u7ebd\u5e26\u3002<\/p>\n
\n- \n
ORM \u6620\u5c04\uff1a<\/strong> \u5bf9\u8c61\u5173\u7cfb\u6620\u5c04\u5668\uff08ORMs\uff09\u4e25\u91cd\u4f9d\u8d56 UML \u98ce\u683c\u7684\u5173\u7cfb\u6765\u7406\u89e3\u5982\u4f55\u5c06\u7c7b\u6620\u5c04\u5230\u8868\u3002<\/p>\n<\/li>\n- \n
\u5168\u6808\u67b6\u6784\uff1a<\/strong> \u5f53\u524d\u7aef\u3001\u540e\u7aef\u548c\u6570\u636e\u5e93\u56e2\u961f\u9700\u8981\u5728\u6570\u636e\u7ed3\u6784\u4e0a\u8fbe\u6210\u4e00\u81f4\u65f6\uff0cUML \u63d0\u4f9b\u4e86\u901a\u7528\u7684\u672f\u8bed\u3002<\/p>\n<\/li>\n- \n
\u590d\u6742\u5173\u7cfb\uff1a<\/strong> \u4e0e\u7eaf\u7cb9\u7684\u5173\u7cfb\u8868\u793a\u6cd5\u76f8\u6bd4\uff0cUML \u5728\u5904\u7406\u7ee7\u627f\u3001\u6cdb\u5316\u548c\u63a5\u53e3\u5b9e\u73b0\u65b9\u9762\u8868\u73b0\u66f4\u4f18\u3002<\/p>\n<\/li>\n<\/ul>\n \u7f3a\u70b9\u662f\u5197\u957f\u3002Crow\u2019s Foot \u4e2d\u4e00\u4e2a\u7b80\u5355\u7684\u8868\u5173\u7cfb\u5728 UML \u4e2d\u53ef\u80fd\u9700\u8981\u4e00\u4e2a\u590d\u6742\u7684\u7c7b\u5b9a\u4e49\uff0c\u5305\u62ec\u5bf9\u6570\u636e\u5e93\u672c\u8eab\u65e0\u5173\u7684\u65b9\u6cd5\u548c\u5c5e\u6027\u3002\u5982\u679c\u4ec5\u5c06\u8be5\u56fe\u7528\u4e8e\u6a21\u5f0f\u751f\u6210\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u6df7\u6dc6\u3002<\/p>\n
\ud83d\udcca \u5e76\u5217\u5bf9\u6bd4<\/h2>\n
\u4e3a\u4e86\u4fbf\u4e8e\u51b3\u7b56\uff0c\u4ee5\u4e0b\u662f\u8fd9\u4e9b\u8868\u793a\u6cd5\u5728\u5904\u7406\u7279\u5b9a\u5efa\u6a21\u573a\u666f\u65f6\u7684\u8be6\u7ec6\u5bf9\u6bd4\u3002<\/p>\n
\n\n \n\n\n\u7279\u6027<\/p>\n<\/th>\n
\n\u9648\u6c0f\u8868\u793a\u6cd5<\/p>\n<\/th>\n
\nCrow\u2019s Foot \u8868\u793a\u6cd5<\/p>\n<\/th>\n
\nUML \u7c7b\u56fe<\/p>\n<\/th>\n<\/tr>\n
\n\n\u4e3b\u8981\u53d7\u4f17<\/strong><\/p>\n<\/td>\n\n\u4e1a\u52a1\u5206\u6790\u5e08\u3001\u5b66\u672f\u4eba\u5458<\/p>\n<\/td>\n
\n\u6570\u636e\u5e93\u7ba1\u7406\u5458\u3001\u540e\u7aef\u5de5\u7a0b\u5e08<\/p>\n<\/td>\n
\n\u5168\u6808\u5f00\u53d1\u8005\u3001\u67b6\u6784\u5e08<\/p>\n<\/td>\n<\/tr>\n
\n\n\u5b9e\u4f53\u8868\u793a<\/strong><\/p>\n<\/td>\n\n\u77e9\u5f62<\/p>\n<\/td>\n
\n\u77e9\u5f62\uff08\u8868\uff09<\/p>\n<\/td>\n
\n\u7c7b\u6846\uff08\u540d\u79f0\/\u5c5e\u6027\/\u65b9\u6cd5\uff09<\/p>\n<\/td>\n<\/tr>\n
\n\n\u5173\u7cfb\u8868\u793a<\/strong><\/p>\n<\/td>\n\n\u83f1\u5f62<\/p>\n<\/td>\n
\n\u5e26\u7b26\u53f7\u7684\u7ebf\u6761<\/p>\n<\/td>\n
\n\u5e26\u7bad\u5934\/\u83f1\u5f62\u7684\u8fde\u7ebf<\/p>\n<\/td>\n<\/tr>\n
\n\n\u57fa\u6570\u8868\u793a\u6cd5<\/strong><\/p>\n<\/td>\n\n\u6807\u7b7e\uff081, N, M\uff09<\/p>\n<\/td>\n
\n\u4e4c\u9e26\u8db3 + \u6a2a\u7ebf\/\u5706\u5708<\/p>\n<\/td>\n
\n\u6570\u5b66\u8868\u793a\u6cd5\uff080..1, *\uff09<\/p>\n<\/td>\n<\/tr>\n
\n\n\u53ef\u7a7a\u6027\u6307\u793a<\/strong><\/p>\n<\/td>\n\n\u9690\u5f0f\u6216\u6587\u672c<\/p>\n<\/td>\n
\n\u663e\u5f0f\uff08\u5706\u5708 = \u53ef\u9009\uff09<\/p>\n<\/td>\n
\n\u663e\u5f0f\uff08\u591a\u91cd\u6027\uff09<\/p>\n<\/td>\n<\/tr>\n
\n\n\u6700\u9002\u5408<\/strong><\/p>\n<\/td>\n\n\u6982\u5ff5\u6a21\u578b<\/p>\n<\/td>\n
\n\u903b\u8f91\/\u7269\u7406\u6a21\u578b<\/p>\n<\/td>\n
\n\u5b9e\u73b0\u6a21\u578b<\/p>\n<\/td>\n<\/tr>\n
\n\n\u590d\u6742\u5ea6<\/strong><\/p>\n<\/td>\n\n\u4e09\u5143\u8fde\u63a5\u65f6\u590d\u6742\u5ea6\u9ad8<\/p>\n<\/td>\n
\n\u4e2d\u7b49<\/p>\n<\/td>\n
\n\u7ee7\u627f\u65f6\u590d\u6742\u5ea6\u9ad8<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\ud83d\udd0d \u4e3a\u60a8\u7684\u6280\u672f\u6808\u9009\u62e9\u5408\u9002\u7684\u8868\u793a\u6cd5<\/h2>\n
\u6ca1\u6709\u5355\u4e00\u7684\u201c\u6700\u4f73\u201d\u8868\u793a\u6cd5\u3002\u6b63\u786e\u7684\u9009\u62e9\u53d6\u51b3\u4e8e\u9879\u76ee\u7684\u751f\u547d\u5468\u671f\u9636\u6bb5\u4ee5\u53ca\u6240\u6d89\u53ca\u7684\u6280\u672f\u3002<\/p>\n
\u573a\u666f1\uff1a\u7eaf\u5173\u7cfb\u578b\u6570\u636e\u4ed3\u5e93<\/h3>\n
\u5982\u679c\u60a8\u6b63\u5728\u8bbe\u8ba1\u4e00\u4e2a\u6570\u636e\u4ed3\u5e93\u6216\u4e8b\u52a1\u7cfb\u7edf\uff0c\u5176\u91cd\u70b9\u5b8c\u5168\u5728\u4e8eSQL\u8868\u548c\u67e5\u8be2\u6027\u80fd\uff0c\u90a3\u4e48\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\u662f\u6700\u9ad8\u6548\u7684\u9009\u62e9\u3002\u5b83\u80fd\u6700\u5c0f\u5316\u4e0e\u5bf9\u8c61\u6982\u5ff5\u76f8\u5173\u7684\u8ba4\u77e5\u8d1f\u62c5\uff0c\u5e76\u6700\u5927\u5316\u5bf9\u7ea6\u675f\u6761\u4ef6\u7684\u6e05\u6670\u8868\u8fbe\u3002\u5f53\u5f00\u53d1\u4eba\u5458\u67e5\u770b\u4e4c\u9e26\u8db3\u56fe\u65f6\uff0c\u4ed6\u4eec\u80fd\u786e\u5207\u77e5\u9053\u9700\u8981\u7f16\u5199\u54ea\u4e2a\u5916\u952e\u3002<\/p>\n
\n- \n
\u91cd\u70b9\uff1a<\/strong> \u6570\u636e\u5b8c\u6574\u6027\u548c\u67e5\u8be2\u901f\u5ea6\u3002<\/p>\n<\/li>\n- \n
\u5efa\u8bae\uff1a<\/strong> \u5728\u7269\u7406\u6a21\u5f0f\u5c42\u4f7f\u7528\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\u3002<\/p>\n<\/li>\n<\/ul>\n\u573a\u666f2\uff1a\u5fae\u670d\u52a1\u4e0e\u9886\u57df\u9a71\u52a8\u8bbe\u8ba1<\/h3>\n
\u5728\u5fae\u670d\u52a1\u67b6\u6784\u4e2d\uff0c\u56e2\u961f\u901a\u5e38\u5728\u6709\u754c\u4e0a\u4e0b\u6587\u4e2d\u8fd0\u4f5c\u3002UML\u7c7b\u56fe\u5728\u6b64\u975e\u5e38\u6709\u7528\uff0c\u53ef\u7528\u4e8e\u5b9a\u4e49\u670d\u52a1\u4e4b\u95f4\u7684\u8fb9\u754c\u3002\u5b83\u4eec\u6709\u52a9\u4e8e\u53ef\u89c6\u5316\u4e00\u4e2a\u670d\u52a1\u4e2d\u7684\u5b9e\u4f53\u5982\u4f55\u4e0e\u53e6\u4e00\u4e2a\u670d\u52a1\u4e2d\u7684\u5b9e\u4f53\u5173\u8054\uff0c\u901a\u5e38\u901a\u8fc7API\u5951\u7ea6\u800c\u975e\u76f4\u63a5\u7684\u6570\u636e\u5e93\u8fde\u63a5\u6765\u5b9e\u73b0\u3002<\/p>\n
\n- \n
\u91cd\u70b9\uff1a<\/strong> \u670d\u52a1\u8fb9\u754c\u548c\u5bf9\u8c61\u6620\u5c04\u3002<\/p>\n<\/li>\n- \n
\u5efa\u8bae\uff1a<\/strong> \u4f7f\u7528UML\u6784\u5efa\u9886\u57df\u6a21\u578b\uff0c\u7136\u540e\u5c06\u5176\u8f6c\u6362\u4e3aCrow\u2019s Foot\u4ee5\u7528\u4e8e\u7279\u5b9a\u670d\u52a1\u7684\u6570\u636e\u5e93\u3002<\/p>\n<\/li>\n<\/ul>\n\u573a\u666f3\uff1a\u9057\u7559\u7cfb\u7edf\u8fc1\u79fb\u4e0e\u5ba1\u8ba1<\/h3>\n
\u5728\u5ba1\u8ba1\u73b0\u6709\u7cfb\u7edf\u6216\u4ece\u9057\u7559\u5e73\u53f0\u8fc1\u79fb\u65f6\uff0c\u6587\u6863\u4e2d\u53ef\u80fd\u4f1a\u51fa\u73b0\u9648\u6c0f\u8bb0\u6cd5\u3002\u7406\u89e3\u5b83\u5bf9\u4e8e\u51c6\u786e\u8fc1\u79fb\u81f3\u5173\u91cd\u8981\u3002\u4f60\u5fc5\u987b\u80fd\u591f\u5c06\u83f1\u5f62\u548c\u692d\u5706\u91cd\u65b0\u8f6c\u6362\u4e3a\u73b0\u4ee3\u7684\u8868\u7ed3\u6784\u3002<\/p>\n
\n- \n
\u91cd\u70b9\uff1a<\/strong> \u4fdd\u7559\u4e1a\u52a1\u903b\u8f91\u3002<\/p>\n<\/li>\n- \n
\u5efa\u8bae\uff1a<\/strong> \u5c06\u9648\u6c0f\u8bb0\u6cd5\u8f6c\u6362\u4e3aCrow\u2019s Foot\u7528\u4e8e\u5b9e\u73b0\uff0c\u540c\u65f6\u4fdd\u7559\u539f\u59cb\u7684\u9648\u6c0f\u8bb0\u6cd5\u4f5c\u4e3a\u53c2\u8003\u3002<\/p>\n<\/li>\n<\/ul>\n\ud83d\udee0\ufe0f \u6570\u636e\u5efa\u6a21\u7684\u6700\u4f73\u5b9e\u8df5<\/h2>\n
\u65e0\u8bba\u9009\u62e9\u54ea\u79cd\u8bb0\u6cd5\uff0c\u67d0\u4e9b\u539f\u5219\u90fd\u666e\u904d\u9002\u7528\uff0c\u4ee5\u786e\u4fdd\u7cfb\u7edf\u5177\u6709\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n
\n- \n
\u4e00\u81f4\u6027\u662f\u5173\u952e\uff1a<\/strong> \u4e0d\u8981\u5728\u540c\u4e00\u6587\u6863\u4e2d\u6df7\u7528\u8bb0\u6cd5\u3002\u5982\u679c\u4f60\u4eceCrow\u2019s Foot\u5f00\u59cb\uff0c\u5c31\u5e94\u59cb\u7ec8\u4f7f\u7528Crow\u2019s Foot\u5b8c\u6210\u3002\u4e2d\u9014\u5207\u6362\u4f1a\u5bfc\u81f4\u5bf9\u7279\u5b9a\u7b26\u53f7\u542b\u4e49\u7684\u6df7\u6dc6\u3002<\/p>\n<\/li>\n- \n
\u547d\u540d\u89c4\u8303\uff1a<\/strong> \u786e\u4fdd\u5b9e\u4f53\u548c\u5c5e\u6027\u540d\u79f0\u5728\u6574\u4e2a\u56fe\u4e2d\u9075\u5faa\u4e00\u81f4\u7684snake_case\u6216camelCase\u6807\u51c6\u3002\u50cf\u201cData\u201d\u6216\u201cInfo\u201d\u8fd9\u6837\u6a21\u7cca\u7684\u540d\u79f0\u662f\u5371\u9669\u4fe1\u53f7\u3002<\/p>\n<\/li>\n- \n
\u89c4\u8303\u5316\uff1a<\/strong> \u5728\u6700\u7ec8\u786e\u5b9a\u56fe\u4e4b\u524d\uff0c\u5e94\u7528\u89c4\u8303\u5316\u89c4\u5219\uff08\u81f3\u591a3NF\u6216BCNF\uff09\u3002\u672a\u89c4\u8303\u5316\u7684\u56fe\u4f1a\u5bfc\u81f4\u5197\u4f59\u548c\u66f4\u65b0\u5f02\u5e38\u3002<\/p>\n<\/li>\n- \n
\u8bb0\u5f55\u7ea6\u675f\uff1a<\/strong> \u660e\u786e\u8bb0\u5f55\u552f\u4e00\u6027\u7ea6\u675f\u548c\u68c0\u67e5\u7ea6\u675f\u3002\u89c6\u89c9\u7b26\u53f7\u663e\u793a\u5173\u7cfb\uff0c\u4f46\u6587\u672c\u6ce8\u91ca\u901a\u5e38\u80fd\u66f4\u6e05\u695a\u5730\u9610\u660e\u4e1a\u52a1\u89c4\u5219\u3002<\/p>\n<\/li>\n- \n
\u7248\u672c\u63a7\u5236\uff1a<\/strong> \u5c06ER\u56fe\u89c6\u4e3a\u4ee3\u7801\u3002\u5c06\u5176\u5b58\u50a8\u5728\u4f60\u7684\u7248\u672c\u63a7\u5236\u7cfb\u7edf\u4e2d\u3002\u5bf9\u6a21\u5f0f\u7684\u4efb\u4f55\u66f4\u6539\u90fd\u5e94\u50cf\u4ee3\u7801\u66f4\u6539\u4e00\u6837\u7ecf\u8fc7\u5ba1\u67e5\u3002<\/p>\n<\/li>\n<\/ul>\n\ud83d\udeab \u5e38\u89c1\u9677\u9631\uff0c\u5e94\u907f\u514d<\/h2>\n
\u5373\u4f7f\u7ecf\u9a8c\u4e30\u5bcc\u7684\u67b6\u6784\u5e08\u5728\u53ef\u89c6\u5316\u6570\u636e\u7ed3\u6784\u65f6\u4e5f\u4f1a\u72af\u9519\u3002\u610f\u8bc6\u5230\u8fd9\u4e9b\u5e38\u89c1\u9519\u8bef\u53ef\u4ee5\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u8282\u7701\u5927\u91cf\u65f6\u95f4\u3002<\/p>\n
1. \u5ffd\u89c6\u53ef\u7a7a\u6027<\/h3>\n
\u6ca1\u6709\u5706\u5708\u6216\u6a2a\u7ebf\u7684\u5173\u7cfb\u7ebf\u610f\u5473\u7740\u9ed8\u8ba4\u503c\uff0c\u800c\u8be5\u9ed8\u8ba4\u503c\u56e0\u5de5\u5177\u800c\u5f02\u3002\u5fc5\u987b\u660e\u786e\u8bf4\u660e\u5916\u952e\u662f\u5426\u53ef\u4ee5\u4e3a\u7a7a\u3002\u5728Crow\u2019s Foot\u4e2d\uff0c\u8fd9\u662f\u4e00\u4e2a\u5706\u5708\uff1b\u5728UML\u4e2d\uff0c\u662f0..1\u7684\u591a\u91cd\u6027\u3002\u5047\u8bbe\u662f\u5371\u9669\u7684\u4e60\u60ef\u3002<\/p>\n
2. \u8fc7\u5ea6\u5efa\u6a21\u4e09\u5143\u5173\u7cfb<\/h3>\n
\u867d\u7136\u9648\u6c0f\u8bb0\u6cd5\u80fd\u5f88\u597d\u5730\u5904\u7406\u4e09\u5143\u5173\u7cfb\uff0c\u4f46\u5173\u7cfb\u578b\u6570\u636e\u5e93\u5e76\u4e0d\u539f\u751f\u652f\u6301\u5b83\u4eec\u3002\u4e09\u4e2a\u8868\u4e4b\u95f4\u7684\u5173\u7cfb\u901a\u5e38\u9700\u8981\u5206\u89e3\u4e3a\u4e8c\u5143\u5173\u7cfb\u6216\u5173\u8054\u5b9e\u4f53\u3002\u76f4\u63a5\u5efa\u6a21\u4e09\u5411\u94fe\u63a5\u53ef\u80fd\u5bfc\u81f4\u5b9e\u73b0\u4e0a\u7684\u9ebb\u70e6\u3002<\/p>\n
3. \u6df7\u6dc6\u805a\u5408\u4e0e\u7ec4\u5408<\/h3>\n
\u5728UML\u4e2d\uff0c\u7a7a\u5fc3\u83f1\u5f62\u4e0e\u5b9e\u5fc3\u83f1\u5f62\u4e4b\u95f4\u7684\u533a\u522b\u81f3\u5173\u91cd\u8981\u3002\u7a7a\u5fc3\u83f1\u5f62\u8868\u793a\u5b50\u5bf9\u8c61\u53ef\u4ee5\u72ec\u7acb\u4e8e\u7236\u5bf9\u8c61\u5b58\u5728\uff1b\u5b9e\u5fc3\u83f1\u5f62\u8868\u793a\u5b50\u5bf9\u8c61\u4e0d\u80fd\u72ec\u7acb\u5b58\u5728\u3002\u6df7\u6dc6\u4e24\u8005\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u5b64\u5c9b\u95ee\u9898\uff0c\u5373\u5b50\u8bb0\u5f55\u88ab\u9519\u8bef\u5220\u9664\u6216\u9519\u8bef\u6301\u4e45\u5316\u3002<\/p>\n
4. \u5faa\u73af\u4f9d\u8d56<\/h3>\n
\u5f53\u8868A\u5f15\u7528\u8868B\uff0c\u800c\u8868B\u53c8\u5f15\u7528\u8868A\u65f6\uff0c\u5c31\u4f1a\u53d1\u751f\u5faa\u73af\u5f15\u7528\u3002\u867d\u7136\u6709\u65f6\u662f\u5408\u7406\u7684\uff08\u4f8b\u5982\u5c42\u6b21\u7ed3\u6784\uff09\uff0c\u4f46\u8fd9\u4f1a\u4f7f\u5907\u4efd\u548c\u6062\u590d\u53d8\u5f97\u590d\u6742\u3002\u786e\u4fdd\u56fe\u4e2d\u660e\u786e\u6307\u793a\u4f9d\u8d56\u65b9\u5411\uff0c\u4ee5\u907f\u514d\u521b\u5efa\u987a\u5e8f\u9519\u8bef\u3002<\/p>\n
5. \u5ffd\u89c6\u8f6f\u5220\u9664<\/h3>\n
\u73b0\u4ee3\u7cfb\u7edf\u901a\u5e38\u9700\u8981\u8f6f\u5220\u9664\uff08\u5c06\u67d0\u884c\u6807\u8bb0\u4e3a\u975e\u6d3b\u8dc3\u72b6\u6001\uff0c\u800c\u4e0d\u662f\u5c06\u5176\u5220\u9664\uff09\u3002\u56fe\u793a\u5e94\u6807\u660e `deleted_at` \u6216 `is_active` \u5217\u7684\u4f4d\u7f6e\u3002\u8fd9\u662f\u4e00\u4e2a\u5f71\u54cd\u7269\u7406\u6a21\u5f0f\u7684\u903b\u8f91\u53d8\u66f4\u3002<\/p>\n
\ud83d\udd04 \u5728\u4e0d\u540c\u7b26\u53f7\u8868\u793a\u4e4b\u95f4\u8f6c\u6362<\/h2>\n
\u4e00\u4e2a\u9879\u76ee\u901a\u5e38\u4ee5\u9648\u6c0f\u8868\u793a\u6cd5\u8fdb\u884c\u9ad8\u5c42\u6b21\u89c4\u5212\uff0c\u6700\u7ec8\u4ee5\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\u8fdb\u884c\u5b9e\u73b0\u3002\u7406\u89e3\u5b83\u4eec\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\uff0c\u53ef\u4ee5\u786e\u4fdd\u5728\u8f6c\u6362\u8fc7\u7a0b\u4e2d\u6570\u636e\u5b8c\u6574\u6027\u5f97\u4ee5\u4fdd\u6301\u3002<\/p>\n
\n- \n
\u9648\u6c0f\u8868\u793a\u6cd5\u8f6c\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\uff1a<\/strong> \u5c06\u83f1\u5f62\u8f6c\u6362\u4e3a\u8fde\u7ebf\u3002\u5c06\u6807\u7b7e\uff081, N\uff09\u8f6c\u6362\u4e3a\u4e4c\u9e26\u8db3\u7b26\u53f7\u3002\u6839\u636e\u539f\u59cb\u8bbe\u8ba1\u6240\u9690\u542b\u7684\u4e1a\u52a1\u89c4\u5219\uff0c\u6dfb\u52a0\u6a21\u6001\u6761\/\u5706\u5708\u3002<\/p>\n<\/li>\n- \n
UML \u8f6c\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\uff1a<\/strong> \u79fb\u9664\u7c7b\u7684\u64cd\u4f5c\uff08\u65b9\u6cd5\uff09\u3002\u5c06\u805a\u5408\/\u7ec4\u5408\u8fde\u7ebf\u7b80\u5316\u4e3a\u6807\u51c6\u7684\u5916\u952e\u3002\u8c03\u6574\u591a\u91cd\u6027\u7b26\u53f7\u4ee5\u5339\u914d\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\u3002<\/p>\n<\/li>\n- \n
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\u7c7b\u56fe\u81f3\u5173\u91cd\u8981\u3002\u5b83\u4eec\u662f\u540e\u7aef\u4ee3\u7801\u4e0e\u6301\u4e45\u5316\u5b58\u50a8\u5c42\u4e4b\u95f4\u7684\u8fde\u63a5\u7ebd\u5e26\u3002<\/p>\n ORM \u6620\u5c04\uff1a<\/strong> \u5bf9\u8c61\u5173\u7cfb\u6620\u5c04\u5668\uff08ORMs\uff09\u4e25\u91cd\u4f9d\u8d56 UML \u98ce\u683c\u7684\u5173\u7cfb\u6765\u7406\u89e3\u5982\u4f55\u5c06\u7c7b\u6620\u5c04\u5230\u8868\u3002<\/p>\n<\/li>\n \u5168\u6808\u67b6\u6784\uff1a<\/strong> \u5f53\u524d\u7aef\u3001\u540e\u7aef\u548c\u6570\u636e\u5e93\u56e2\u961f\u9700\u8981\u5728\u6570\u636e\u7ed3\u6784\u4e0a\u8fbe\u6210\u4e00\u81f4\u65f6\uff0cUML \u63d0\u4f9b\u4e86\u901a\u7528\u7684\u672f\u8bed\u3002<\/p>\n<\/li>\n \u590d\u6742\u5173\u7cfb\uff1a<\/strong> \u4e0e\u7eaf\u7cb9\u7684\u5173\u7cfb\u8868\u793a\u6cd5\u76f8\u6bd4\uff0cUML \u5728\u5904\u7406\u7ee7\u627f\u3001\u6cdb\u5316\u548c\u63a5\u53e3\u5b9e\u73b0\u65b9\u9762\u8868\u73b0\u66f4\u4f18\u3002<\/p>\n<\/li>\n<\/ul>\n \u7f3a\u70b9\u662f\u5197\u957f\u3002Crow\u2019s Foot \u4e2d\u4e00\u4e2a\u7b80\u5355\u7684\u8868\u5173\u7cfb\u5728 UML \u4e2d\u53ef\u80fd\u9700\u8981\u4e00\u4e2a\u590d\u6742\u7684\u7c7b\u5b9a\u4e49\uff0c\u5305\u62ec\u5bf9\u6570\u636e\u5e93\u672c\u8eab\u65e0\u5173\u7684\u65b9\u6cd5\u548c\u5c5e\u6027\u3002\u5982\u679c\u4ec5\u5c06\u8be5\u56fe\u7528\u4e8e\u6a21\u5f0f\u751f\u6210\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u6df7\u6dc6\u3002<\/p>\n \u4e3a\u4e86\u4fbf\u4e8e\u51b3\u7b56\uff0c\u4ee5\u4e0b\u662f\u8fd9\u4e9b\u8868\u793a\u6cd5\u5728\u5904\u7406\u7279\u5b9a\u5efa\u6a21\u573a\u666f\u65f6\u7684\u8be6\u7ec6\u5bf9\u6bd4\u3002<\/p>\n \u7279\u6027<\/p>\n<\/th>\n \u9648\u6c0f\u8868\u793a\u6cd5<\/p>\n<\/th>\n Crow\u2019s Foot \u8868\u793a\u6cd5<\/p>\n<\/th>\n UML \u7c7b\u56fe<\/p>\n<\/th>\n<\/tr>\n \u4e3b\u8981\u53d7\u4f17<\/strong><\/p>\n<\/td>\n \u4e1a\u52a1\u5206\u6790\u5e08\u3001\u5b66\u672f\u4eba\u5458<\/p>\n<\/td>\n \u6570\u636e\u5e93\u7ba1\u7406\u5458\u3001\u540e\u7aef\u5de5\u7a0b\u5e08<\/p>\n<\/td>\n \u5168\u6808\u5f00\u53d1\u8005\u3001\u67b6\u6784\u5e08<\/p>\n<\/td>\n<\/tr>\n \u5b9e\u4f53\u8868\u793a<\/strong><\/p>\n<\/td>\n \u77e9\u5f62<\/p>\n<\/td>\n \u77e9\u5f62\uff08\u8868\uff09<\/p>\n<\/td>\n \u7c7b\u6846\uff08\u540d\u79f0\/\u5c5e\u6027\/\u65b9\u6cd5\uff09<\/p>\n<\/td>\n<\/tr>\n \u5173\u7cfb\u8868\u793a<\/strong><\/p>\n<\/td>\n \u83f1\u5f62<\/p>\n<\/td>\n \u5e26\u7b26\u53f7\u7684\u7ebf\u6761<\/p>\n<\/td>\n \u5e26\u7bad\u5934\/\u83f1\u5f62\u7684\u8fde\u7ebf<\/p>\n<\/td>\n<\/tr>\n \u57fa\u6570\u8868\u793a\u6cd5<\/strong><\/p>\n<\/td>\n \u6807\u7b7e\uff081, N, M\uff09<\/p>\n<\/td>\n \u4e4c\u9e26\u8db3 + \u6a2a\u7ebf\/\u5706\u5708<\/p>\n<\/td>\n \u6570\u5b66\u8868\u793a\u6cd5\uff080..1, *\uff09<\/p>\n<\/td>\n<\/tr>\n \u53ef\u7a7a\u6027\u6307\u793a<\/strong><\/p>\n<\/td>\n \u9690\u5f0f\u6216\u6587\u672c<\/p>\n<\/td>\n \u663e\u5f0f\uff08\u5706\u5708 = \u53ef\u9009\uff09<\/p>\n<\/td>\n \u663e\u5f0f\uff08\u591a\u91cd\u6027\uff09<\/p>\n<\/td>\n<\/tr>\n \u6700\u9002\u5408<\/strong><\/p>\n<\/td>\n \u6982\u5ff5\u6a21\u578b<\/p>\n<\/td>\n \u903b\u8f91\/\u7269\u7406\u6a21\u578b<\/p>\n<\/td>\n \u5b9e\u73b0\u6a21\u578b<\/p>\n<\/td>\n<\/tr>\n \u590d\u6742\u5ea6<\/strong><\/p>\n<\/td>\n \u4e09\u5143\u8fde\u63a5\u65f6\u590d\u6742\u5ea6\u9ad8<\/p>\n<\/td>\n \u4e2d\u7b49<\/p>\n<\/td>\n \u7ee7\u627f\u65f6\u590d\u6742\u5ea6\u9ad8<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u6ca1\u6709\u5355\u4e00\u7684\u201c\u6700\u4f73\u201d\u8868\u793a\u6cd5\u3002\u6b63\u786e\u7684\u9009\u62e9\u53d6\u51b3\u4e8e\u9879\u76ee\u7684\u751f\u547d\u5468\u671f\u9636\u6bb5\u4ee5\u53ca\u6240\u6d89\u53ca\u7684\u6280\u672f\u3002<\/p>\n \u5982\u679c\u60a8\u6b63\u5728\u8bbe\u8ba1\u4e00\u4e2a\u6570\u636e\u4ed3\u5e93\u6216\u4e8b\u52a1\u7cfb\u7edf\uff0c\u5176\u91cd\u70b9\u5b8c\u5168\u5728\u4e8eSQL\u8868\u548c\u67e5\u8be2\u6027\u80fd\uff0c\u90a3\u4e48\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\u662f\u6700\u9ad8\u6548\u7684\u9009\u62e9\u3002\u5b83\u80fd\u6700\u5c0f\u5316\u4e0e\u5bf9\u8c61\u6982\u5ff5\u76f8\u5173\u7684\u8ba4\u77e5\u8d1f\u62c5\uff0c\u5e76\u6700\u5927\u5316\u5bf9\u7ea6\u675f\u6761\u4ef6\u7684\u6e05\u6670\u8868\u8fbe\u3002\u5f53\u5f00\u53d1\u4eba\u5458\u67e5\u770b\u4e4c\u9e26\u8db3\u56fe\u65f6\uff0c\u4ed6\u4eec\u80fd\u786e\u5207\u77e5\u9053\u9700\u8981\u7f16\u5199\u54ea\u4e2a\u5916\u952e\u3002<\/p>\n \u91cd\u70b9\uff1a<\/strong> \u6570\u636e\u5b8c\u6574\u6027\u548c\u67e5\u8be2\u901f\u5ea6\u3002<\/p>\n<\/li>\n \u5efa\u8bae\uff1a<\/strong> \u5728\u7269\u7406\u6a21\u5f0f\u5c42\u4f7f\u7528\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\u3002<\/p>\n<\/li>\n<\/ul>\n \u5728\u5fae\u670d\u52a1\u67b6\u6784\u4e2d\uff0c\u56e2\u961f\u901a\u5e38\u5728\u6709\u754c\u4e0a\u4e0b\u6587\u4e2d\u8fd0\u4f5c\u3002UML\u7c7b\u56fe\u5728\u6b64\u975e\u5e38\u6709\u7528\uff0c\u53ef\u7528\u4e8e\u5b9a\u4e49\u670d\u52a1\u4e4b\u95f4\u7684\u8fb9\u754c\u3002\u5b83\u4eec\u6709\u52a9\u4e8e\u53ef\u89c6\u5316\u4e00\u4e2a\u670d\u52a1\u4e2d\u7684\u5b9e\u4f53\u5982\u4f55\u4e0e\u53e6\u4e00\u4e2a\u670d\u52a1\u4e2d\u7684\u5b9e\u4f53\u5173\u8054\uff0c\u901a\u5e38\u901a\u8fc7API\u5951\u7ea6\u800c\u975e\u76f4\u63a5\u7684\u6570\u636e\u5e93\u8fde\u63a5\u6765\u5b9e\u73b0\u3002<\/p>\n \u91cd\u70b9\uff1a<\/strong> \u670d\u52a1\u8fb9\u754c\u548c\u5bf9\u8c61\u6620\u5c04\u3002<\/p>\n<\/li>\n \u5efa\u8bae\uff1a<\/strong> \u4f7f\u7528UML\u6784\u5efa\u9886\u57df\u6a21\u578b\uff0c\u7136\u540e\u5c06\u5176\u8f6c\u6362\u4e3aCrow\u2019s Foot\u4ee5\u7528\u4e8e\u7279\u5b9a\u670d\u52a1\u7684\u6570\u636e\u5e93\u3002<\/p>\n<\/li>\n<\/ul>\n \u5728\u5ba1\u8ba1\u73b0\u6709\u7cfb\u7edf\u6216\u4ece\u9057\u7559\u5e73\u53f0\u8fc1\u79fb\u65f6\uff0c\u6587\u6863\u4e2d\u53ef\u80fd\u4f1a\u51fa\u73b0\u9648\u6c0f\u8bb0\u6cd5\u3002\u7406\u89e3\u5b83\u5bf9\u4e8e\u51c6\u786e\u8fc1\u79fb\u81f3\u5173\u91cd\u8981\u3002\u4f60\u5fc5\u987b\u80fd\u591f\u5c06\u83f1\u5f62\u548c\u692d\u5706\u91cd\u65b0\u8f6c\u6362\u4e3a\u73b0\u4ee3\u7684\u8868\u7ed3\u6784\u3002<\/p>\n \u91cd\u70b9\uff1a<\/strong> \u4fdd\u7559\u4e1a\u52a1\u903b\u8f91\u3002<\/p>\n<\/li>\n \u5efa\u8bae\uff1a<\/strong> \u5c06\u9648\u6c0f\u8bb0\u6cd5\u8f6c\u6362\u4e3aCrow\u2019s Foot\u7528\u4e8e\u5b9e\u73b0\uff0c\u540c\u65f6\u4fdd\u7559\u539f\u59cb\u7684\u9648\u6c0f\u8bb0\u6cd5\u4f5c\u4e3a\u53c2\u8003\u3002<\/p>\n<\/li>\n<\/ul>\n \u65e0\u8bba\u9009\u62e9\u54ea\u79cd\u8bb0\u6cd5\uff0c\u67d0\u4e9b\u539f\u5219\u90fd\u666e\u904d\u9002\u7528\uff0c\u4ee5\u786e\u4fdd\u7cfb\u7edf\u5177\u6709\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n \u4e00\u81f4\u6027\u662f\u5173\u952e\uff1a<\/strong> \u4e0d\u8981\u5728\u540c\u4e00\u6587\u6863\u4e2d\u6df7\u7528\u8bb0\u6cd5\u3002\u5982\u679c\u4f60\u4eceCrow\u2019s Foot\u5f00\u59cb\uff0c\u5c31\u5e94\u59cb\u7ec8\u4f7f\u7528Crow\u2019s Foot\u5b8c\u6210\u3002\u4e2d\u9014\u5207\u6362\u4f1a\u5bfc\u81f4\u5bf9\u7279\u5b9a\u7b26\u53f7\u542b\u4e49\u7684\u6df7\u6dc6\u3002<\/p>\n<\/li>\n \u547d\u540d\u89c4\u8303\uff1a<\/strong> \u786e\u4fdd\u5b9e\u4f53\u548c\u5c5e\u6027\u540d\u79f0\u5728\u6574\u4e2a\u56fe\u4e2d\u9075\u5faa\u4e00\u81f4\u7684snake_case\u6216camelCase\u6807\u51c6\u3002\u50cf\u201cData\u201d\u6216\u201cInfo\u201d\u8fd9\u6837\u6a21\u7cca\u7684\u540d\u79f0\u662f\u5371\u9669\u4fe1\u53f7\u3002<\/p>\n<\/li>\n \u89c4\u8303\u5316\uff1a<\/strong> \u5728\u6700\u7ec8\u786e\u5b9a\u56fe\u4e4b\u524d\uff0c\u5e94\u7528\u89c4\u8303\u5316\u89c4\u5219\uff08\u81f3\u591a3NF\u6216BCNF\uff09\u3002\u672a\u89c4\u8303\u5316\u7684\u56fe\u4f1a\u5bfc\u81f4\u5197\u4f59\u548c\u66f4\u65b0\u5f02\u5e38\u3002<\/p>\n<\/li>\n \u8bb0\u5f55\u7ea6\u675f\uff1a<\/strong> \u660e\u786e\u8bb0\u5f55\u552f\u4e00\u6027\u7ea6\u675f\u548c\u68c0\u67e5\u7ea6\u675f\u3002\u89c6\u89c9\u7b26\u53f7\u663e\u793a\u5173\u7cfb\uff0c\u4f46\u6587\u672c\u6ce8\u91ca\u901a\u5e38\u80fd\u66f4\u6e05\u695a\u5730\u9610\u660e\u4e1a\u52a1\u89c4\u5219\u3002<\/p>\n<\/li>\n \u7248\u672c\u63a7\u5236\uff1a<\/strong> \u5c06ER\u56fe\u89c6\u4e3a\u4ee3\u7801\u3002\u5c06\u5176\u5b58\u50a8\u5728\u4f60\u7684\u7248\u672c\u63a7\u5236\u7cfb\u7edf\u4e2d\u3002\u5bf9\u6a21\u5f0f\u7684\u4efb\u4f55\u66f4\u6539\u90fd\u5e94\u50cf\u4ee3\u7801\u66f4\u6539\u4e00\u6837\u7ecf\u8fc7\u5ba1\u67e5\u3002<\/p>\n<\/li>\n<\/ul>\n \u5373\u4f7f\u7ecf\u9a8c\u4e30\u5bcc\u7684\u67b6\u6784\u5e08\u5728\u53ef\u89c6\u5316\u6570\u636e\u7ed3\u6784\u65f6\u4e5f\u4f1a\u72af\u9519\u3002\u610f\u8bc6\u5230\u8fd9\u4e9b\u5e38\u89c1\u9519\u8bef\u53ef\u4ee5\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u8282\u7701\u5927\u91cf\u65f6\u95f4\u3002<\/p>\n \u6ca1\u6709\u5706\u5708\u6216\u6a2a\u7ebf\u7684\u5173\u7cfb\u7ebf\u610f\u5473\u7740\u9ed8\u8ba4\u503c\uff0c\u800c\u8be5\u9ed8\u8ba4\u503c\u56e0\u5de5\u5177\u800c\u5f02\u3002\u5fc5\u987b\u660e\u786e\u8bf4\u660e\u5916\u952e\u662f\u5426\u53ef\u4ee5\u4e3a\u7a7a\u3002\u5728Crow\u2019s Foot\u4e2d\uff0c\u8fd9\u662f\u4e00\u4e2a\u5706\u5708\uff1b\u5728UML\u4e2d\uff0c\u662f0..1\u7684\u591a\u91cd\u6027\u3002\u5047\u8bbe\u662f\u5371\u9669\u7684\u4e60\u60ef\u3002<\/p>\n \u867d\u7136\u9648\u6c0f\u8bb0\u6cd5\u80fd\u5f88\u597d\u5730\u5904\u7406\u4e09\u5143\u5173\u7cfb\uff0c\u4f46\u5173\u7cfb\u578b\u6570\u636e\u5e93\u5e76\u4e0d\u539f\u751f\u652f\u6301\u5b83\u4eec\u3002\u4e09\u4e2a\u8868\u4e4b\u95f4\u7684\u5173\u7cfb\u901a\u5e38\u9700\u8981\u5206\u89e3\u4e3a\u4e8c\u5143\u5173\u7cfb\u6216\u5173\u8054\u5b9e\u4f53\u3002\u76f4\u63a5\u5efa\u6a21\u4e09\u5411\u94fe\u63a5\u53ef\u80fd\u5bfc\u81f4\u5b9e\u73b0\u4e0a\u7684\u9ebb\u70e6\u3002<\/p>\n \u5728UML\u4e2d\uff0c\u7a7a\u5fc3\u83f1\u5f62\u4e0e\u5b9e\u5fc3\u83f1\u5f62\u4e4b\u95f4\u7684\u533a\u522b\u81f3\u5173\u91cd\u8981\u3002\u7a7a\u5fc3\u83f1\u5f62\u8868\u793a\u5b50\u5bf9\u8c61\u53ef\u4ee5\u72ec\u7acb\u4e8e\u7236\u5bf9\u8c61\u5b58\u5728\uff1b\u5b9e\u5fc3\u83f1\u5f62\u8868\u793a\u5b50\u5bf9\u8c61\u4e0d\u80fd\u72ec\u7acb\u5b58\u5728\u3002\u6df7\u6dc6\u4e24\u8005\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u5b64\u5c9b\u95ee\u9898\uff0c\u5373\u5b50\u8bb0\u5f55\u88ab\u9519\u8bef\u5220\u9664\u6216\u9519\u8bef\u6301\u4e45\u5316\u3002<\/p>\n \u5f53\u8868A\u5f15\u7528\u8868B\uff0c\u800c\u8868B\u53c8\u5f15\u7528\u8868A\u65f6\uff0c\u5c31\u4f1a\u53d1\u751f\u5faa\u73af\u5f15\u7528\u3002\u867d\u7136\u6709\u65f6\u662f\u5408\u7406\u7684\uff08\u4f8b\u5982\u5c42\u6b21\u7ed3\u6784\uff09\uff0c\u4f46\u8fd9\u4f1a\u4f7f\u5907\u4efd\u548c\u6062\u590d\u53d8\u5f97\u590d\u6742\u3002\u786e\u4fdd\u56fe\u4e2d\u660e\u786e\u6307\u793a\u4f9d\u8d56\u65b9\u5411\uff0c\u4ee5\u907f\u514d\u521b\u5efa\u987a\u5e8f\u9519\u8bef\u3002<\/p>\n \u73b0\u4ee3\u7cfb\u7edf\u901a\u5e38\u9700\u8981\u8f6f\u5220\u9664\uff08\u5c06\u67d0\u884c\u6807\u8bb0\u4e3a\u975e\u6d3b\u8dc3\u72b6\u6001\uff0c\u800c\u4e0d\u662f\u5c06\u5176\u5220\u9664\uff09\u3002\u56fe\u793a\u5e94\u6807\u660e `deleted_at` \u6216 `is_active` \u5217\u7684\u4f4d\u7f6e\u3002\u8fd9\u662f\u4e00\u4e2a\u5f71\u54cd\u7269\u7406\u6a21\u5f0f\u7684\u903b\u8f91\u53d8\u66f4\u3002<\/p>\n \u4e00\u4e2a\u9879\u76ee\u901a\u5e38\u4ee5\u9648\u6c0f\u8868\u793a\u6cd5\u8fdb\u884c\u9ad8\u5c42\u6b21\u89c4\u5212\uff0c\u6700\u7ec8\u4ee5\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\u8fdb\u884c\u5b9e\u73b0\u3002\u7406\u89e3\u5b83\u4eec\u4e4b\u95f4\u7684\u6620\u5c04\u5173\u7cfb\uff0c\u53ef\u4ee5\u786e\u4fdd\u5728\u8f6c\u6362\u8fc7\u7a0b\u4e2d\u6570\u636e\u5b8c\u6574\u6027\u5f97\u4ee5\u4fdd\u6301\u3002<\/p>\n \u9648\u6c0f\u8868\u793a\u6cd5\u8f6c\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\uff1a<\/strong> \u5c06\u83f1\u5f62\u8f6c\u6362\u4e3a\u8fde\u7ebf\u3002\u5c06\u6807\u7b7e\uff081, N\uff09\u8f6c\u6362\u4e3a\u4e4c\u9e26\u8db3\u7b26\u53f7\u3002\u6839\u636e\u539f\u59cb\u8bbe\u8ba1\u6240\u9690\u542b\u7684\u4e1a\u52a1\u89c4\u5219\uff0c\u6dfb\u52a0\u6a21\u6001\u6761\/\u5706\u5708\u3002<\/p>\n<\/li>\n UML \u8f6c\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\uff1a<\/strong> \u79fb\u9664\u7c7b\u7684\u64cd\u4f5c\uff08\u65b9\u6cd5\uff09\u3002\u5c06\u805a\u5408\/\u7ec4\u5408\u8fde\u7ebf\u7b80\u5316\u4e3a\u6807\u51c6\u7684\u5916\u952e\u3002\u8c03\u6574\u591a\u91cd\u6027\u7b26\u53f7\u4ee5\u5339\u914d\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\u3002<\/p>\n<\/li>\n \u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\u8f6c UML\uff1a<\/strong> \u6dfb\u52a0\u7c7b\u6846\u7ed3\u6784\u3002\u5c06\u5173\u7cfb\u7ebf\u6620\u5c04\u4e3a\u5173\u8054\u7bad\u5934\u3002\u6839\u636e\u6570\u636e\u7684\u751f\u547d\u5468\u671f\u5224\u65ad\u8be5\u5173\u7cfb\u662f\u805a\u5408\u8fd8\u662f\u7ec4\u5408\u3002<\/p>\n<\/li>\n<\/ul>\n \u7b26\u53f7\u7684\u9009\u62e9\u4e0d\u4ec5\u4ec5\u662f\u5ba1\u7f8e\u95ee\u9898\uff1b\u5b83\u662f\u4e00\u79cd\u6c9f\u901a\u5de5\u5177\uff0c\u51b3\u5b9a\u4e86\u6570\u636e\u5e93\u5982\u4f55\u88ab\u7406\u89e3\u4e0e\u6784\u5efa\u3002\u9648\u6c0f\u8868\u793a\u6cd5\u63d0\u4f9b\u6982\u5ff5\u4e0a\u7684\u6e05\u6670\u6027\uff0c\u4e4c\u9e26\u8db3\u8868\u793a\u6cd5\u63d0\u4f9b\u5173\u7cfb\u4e0a\u7684\u7cbe\u786e\u6027\uff0c\u800c UML \u5219\u5b9e\u73b0\u9762\u5411\u5bf9\u8c61\u7684\u96c6\u6210\u3002<\/p>\n \u901a\u8fc7\u9009\u62e9\u4e0e\u56e2\u961f\u4e13\u957f\u548c\u7cfb\u7edf\u67b6\u6784\u76f8\u5339\u914d\u7684\u7b26\u53f7\uff0c\u53ef\u4ee5\u964d\u4f4e\u8bef\u89e3\u7684\u98ce\u9669\u3002\u4e00\u4e2a\u826f\u597d\u6587\u6863\u5316\u7684\u6a21\u5f0f\uff0c\u662f\u6570\u636e\u4e0e\u5e94\u7528\u7a0b\u5e8f\u4e4b\u95f4\u7684\u5951\u7ea6\u3002\u65e0\u8bba\u4f60\u7ed8\u5236\u7684\u662f\u83f1\u5f62\u3001\u4e4c\u9e26\u8db3\u8fd8\u662f\u7c7b\u6846\uff0c\u76ee\u6807\u59cb\u7ec8\u4e00\u81f4\uff1a\u4e3a\u4f60\u7684\u6570\u636e\u5efa\u7acb\u4e00\u4e2a\u7a33\u56fa\u7684\u57fa\u7840\u3002<\/p>\n 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\u548c\u9648\u6c0f\u8868\u793a\u6cd5\u7b49 ER \u56fe\u7b26\u53f7\u3002\u5b66\u4e60\u5728\u6570\u636e\u5e93\u8bbe\u8ba1\u3001\u6a21\u5f0f\u5efa\u6a21\u548c\u6808\u517c\u5bb9\u6027\u573a\u666f\u4e2d\u5982\u4f55\u9009\u62e9\u4f7f\u7528\u6bcf\u79cd\u7b26\u53f7\u3002","inline_featured_image":false,"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[6],"tags":[8,13],"class_list":["post-82","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-erd","tag-academic","tag-erd"],"yoast_head":"\n\u4f18\u52bf\u4e0e\u5e94\u7528\u573a\u666f<\/h3>\n
\n
\ud83e\uddb5 Crow’s Foot\u8868\u793a\u6cd5\uff1a\u5173\u7cfb\u6807\u51c6<\/h2>\n
\u6838\u5fc3\u8bed\u6cd5\u4e0e\u89c6\u89c9\u5143\u7d20<\/h3>\n
\n
\u4f18\u52bf\u4e0e\u5e94\u7528\u573a\u666f<\/h3>\n
\n
\ud83d\udcd0 UML \u7c7b\u56fe\uff1a\u9762\u5411\u5bf9\u8c61\u7684\u6865\u6881<\/h2>\n
\u6838\u5fc3\u8bed\u6cd5\u4e0e\u89c6\u89c9\u5143\u7d20<\/h3>\n
\n
\u4f18\u52bf\u4e0e\u4f7f\u7528\u573a\u666f<\/h3>\n
\n
\ud83d\udcca \u5e76\u5217\u5bf9\u6bd4<\/h2>\n
\n
\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \ud83d\udd0d \u4e3a\u60a8\u7684\u6280\u672f\u6808\u9009\u62e9\u5408\u9002\u7684\u8868\u793a\u6cd5<\/h2>\n
\u573a\u666f1\uff1a\u7eaf\u5173\u7cfb\u578b\u6570\u636e\u4ed3\u5e93<\/h3>\n
\n
\u573a\u666f2\uff1a\u5fae\u670d\u52a1\u4e0e\u9886\u57df\u9a71\u52a8\u8bbe\u8ba1<\/h3>\n
\n
\u573a\u666f3\uff1a\u9057\u7559\u7cfb\u7edf\u8fc1\u79fb\u4e0e\u5ba1\u8ba1<\/h3>\n
\n
\ud83d\udee0\ufe0f \u6570\u636e\u5efa\u6a21\u7684\u6700\u4f73\u5b9e\u8df5<\/h2>\n
\n
\ud83d\udeab \u5e38\u89c1\u9677\u9631\uff0c\u5e94\u907f\u514d<\/h2>\n
1. \u5ffd\u89c6\u53ef\u7a7a\u6027<\/h3>\n
2. \u8fc7\u5ea6\u5efa\u6a21\u4e09\u5143\u5173\u7cfb<\/h3>\n
3. \u6df7\u6dc6\u805a\u5408\u4e0e\u7ec4\u5408<\/h3>\n
4. \u5faa\u73af\u4f9d\u8d56<\/h3>\n
5. \u5ffd\u89c6\u8f6f\u5220\u9664<\/h3>\n
\ud83d\udd04 \u5728\u4e0d\u540c\u7b26\u53f7\u8868\u793a\u4e4b\u95f4\u8f6c\u6362<\/h2>\n
\n
\ud83d\udcdd \u6570\u636e\u5efa\u6a21\u7684\u6700\u7ec8\u601d\u8003<\/h2>\n