{"id":1648,"date":"2026-04-08T23:18:07","date_gmt":"2026-04-08T23:18:07","guid":{"rendered":"https:\/\/www.viz-note.com\/tw\/entity-relationship-diagram-semantics-sql-nosql\/"},"modified":"2026-04-08T23:18:07","modified_gmt":"2026-04-08T23:18:07","slug":"entity-relationship-diagram-semantics-sql-nosql","status":"publish","type":"post","link":"https:\/\/www.viz-note.com\/tw\/entity-relationship-diagram-semantics-sql-nosql\/","title":{"rendered":"SQL \u8207 NoSQL \u74b0\u5883\u4e2d\u5be6\u9ad4\u95dc\u4fc2\u5716\u8a9e\u7fa9\u7684\u6b0a\u5a01\u6982\u8ff0"},"content":{"rendered":"<p>\u8a2d\u8a08\u7a69\u5065\u7684\u8cc7\u6599\u67b6\u69cb\u9700\u8981\u6df1\u5165\u7406\u89e3\u8cc7\u8a0a\u5982\u4f55\u9023\u7d50\u3001\u95dc\u806f\u8207\u6301\u4e45\u5316\u3002\u6b64\u8a2d\u8a08\u7684\u6838\u5fc3\u5728\u65bc\u5be6\u9ad4\u95dc\u4fc2\u5716\uff08ERD\uff09\u3002\u96d6\u7136\u50b3\u7d71\u4e0a\u8207\u95dc\u806f\u5f0f\u8cc7\u6599\u5eab\u76f8\u95dc\uff0c\u4f46 ERD \u7684\u8a9e\u7fa9\u5df2\u6f14\u9032\uff0c\u4ee5\u9069\u61c9\u73fe\u4ee3 NoSQL \u74b0\u5883\u7684\u591a\u6a23\u9700\u6c42\u3002\u672c\u6307\u5357\u63a2\u8a0e\u5728\u4e0d\u540c\u5132\u5b58\u67b6\u69cb\u4e2d\u5efa\u6a21\u8cc7\u6599\u95dc\u4fc2\u7684\u7d30\u7bc0\uff0c\u78ba\u4fdd\u7d50\u69cb\u5b8c\u6574\u6027\uff0c\u540c\u6642\u4e0d\u72a7\u7272\u6548\u80fd\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Hand-drawn infographic comparing Entity Relationship Diagram semantics across SQL and NoSQL databases, illustrating foundational ERD concepts, relational foreign keys and normalization, document store embedding, graph database nodes and edges, relationship cardinality patterns (one-to-one, one-to-many, many-to-many), and best practices for data modeling with thick outline sketch aesthetic\" decoding=\"async\" src=\"https:\/\/www.viz-note.com\/wp-content\/uploads\/2026\/04\/erd-semantics-sql-nosql-comparison-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>\u8cc7\u6599\u6a21\u578b\u7684\u57fa\u790e\u6982\u5ff5 \ud83c\udfd7\ufe0f<\/h2>\n<p>\u5728\u6df1\u5165\u63a2\u8a0e\u7279\u5b9a\u8cc7\u6599\u5eab\u985e\u578b\u4e4b\u524d\uff0c\u5efa\u7acb\u5171\u901a\u7684\u8853\u8a9e\u8a5e\u5f59\u81f3\u95dc\u91cd\u8981\u3002\u5be6\u9ad4\u95dc\u4fc2\u5716\u53ef\u4f5c\u70ba\u8996\u89ba\u5316\u7684\u85cd\u5716\uff0c\u5b9a\u7fa9\u5be6\u9ad4\uff08\u8cc7\u6599\u8868\u3001\u96c6\u5408\u6216\u6587\u4ef6\uff09\u3001\u5176\u5c6c\u6027\uff08\u6b04\u4f4d\u3001\u6b04\u76ee\u6216\u5c6c\u6027\uff09\uff0c\u4ee5\u53ca\u9023\u7d50\u5b83\u5011\u7684\u95dc\u4fc2\u3002<\/p>\n<ul>\n<li><strong>\u5be6\u9ad4\uff1a<\/strong> \u5546\u696d\u9818\u57df\u4e2d\u4e00\u500b\u660e\u78ba\u7684\u7269\u4ef6\u6216\u6982\u5ff5\u3002\u5728\u8cc7\u6599\u5eab\u60c5\u5883\u4e2d\uff0c\u9019\u53ef\u80fd\u662f\u4f7f\u7528\u8005\u3001\u7522\u54c1\u6216\u8a02\u55ae\u3002<\/li>\n<li><strong>\u5c6c\u6027\uff1a<\/strong> \u63cf\u8ff0\u5be6\u9ad4\u7684\u5c6c\u6027\u3002\u7bc4\u4f8b\u5305\u62ec<em>id<\/em>, <em>name<\/em>, <em>created_at<\/em>\uff0c\u6216<em>status<\/em>.<\/li>\n<li><strong>\u95dc\u4fc2\uff1a<\/strong> \u5169\u500b\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u806f\u3002\u9019\u5b9a\u7fa9\u4e86\u4e00\u500b\u5be6\u9ad4\u4e2d\u7684\u8cc7\u6599\u5982\u4f55\u8207\u53e6\u4e00\u500b\u5be6\u9ad4\u4e2d\u7684\u8cc7\u6599\u9023\u7d50\u3002<\/li>\n<li><strong>\u57fa\u6578\uff1a<\/strong> \u95dc\u4fc2\u7684\u6578\u503c\u9762\u5411\u3002\u5b83\u8aaa\u660e\u95dc\u4fc2\u662f\u4e00\u5c0d\u4e00\u3001\u4e00\u5c0d\u591a\uff0c\u9084\u662f\u591a\u5c0d\u591a\u3002<\/li>\n<\/ul>\n<p>\u5efa\u7acb ERD \u6642\uff0c\u76ee\u6a19\u662f\u5448\u73fe\u61c9\u7528\u7a0b\u5f0f\u7684\u73fe\u5be6\u4e16\u754c\u908f\u8f2f\u3002\u4e00\u500b\u8a2d\u8a08\u826f\u597d\u7684\u5716\u8868\u80fd\u6e1b\u5c11\u958b\u767c\u4eba\u54e1\u7684\u6b67\u7fa9\uff0c\u4e26\u78ba\u4fdd\u5728\u958b\u767c\u9031\u671f\u5f8c\u7e8c\u968e\u6bb5\u80fd\u6709\u6548\u64b0\u5beb\u67e5\u8a62\u3002<\/p>\n<h2>\u95dc\u806f\u5f0f\u74b0\u5883\u4e2d\u7684\u8a9e\u7fa9 \ud83d\uddc3\ufe0f<\/h2>\n<p>\u5728\u95dc\u806f\u5f0f\u6a21\u578b\u4e2d\uff0c\u8cc7\u6599\u4ee5\u5177\u6709\u56b4\u683c\u7d50\u69cb\u7684\u8cc7\u6599\u8868\u5132\u5b58\u3002\u6b64\u8655 ERD \u7684\u8a9e\u7fa9\u662f\u50f5\u5316\u7684\uff0c\u53d7\u96c6\u5408\u8ad6\u8207\u7b2c\u4e00\u6b63\u898f\u5316\u539f\u5247\u6240\u898f\u7bc4\u3002\u6bcf\u4e00\u500b\u95dc\u4fc2\u90fd\u7531\u8cc7\u6599\u5eab\u5f15\u64ce\u5f37\u5236\u57f7\u884c\uff0c\u4ee5\u7dad\u6301\u53c3\u7167\u5b8c\u6574\u6027\u3002<\/p>\n<h3>1. \u5916\u9375\u7684\u89d2\u8272<\/h3>\n<p>\u5916\u9375\u662f\u95dc\u806f\u5f0f ERD \u7684\u9aa8\u5e79\u3002\u5b83\u5011\u5be6\u969b\u4e0a\u5c07\u8cc7\u6599\u8868\u9023\u7d50\u5728\u4e00\u8d77\u3002\u7576 ERD \u986f\u793a\u4e00\u689d\u7dda\u9023\u63a5\u5169\u500b\u8cc7\u6599\u8868\u6642\uff0c\u5176\u5be6\u4f5c\u4f9d\u8cf4\u65bc\u5b50\u8cc7\u6599\u8868\u4e2d\u7684\u5916\u9375\u6b04\u4f4d\uff0c\u6307\u5411\u7236\u8cc7\u6599\u8868\u7684\u4e3b\u9375\u3002<\/p>\n<ul>\n<li><strong>\u5be6\u4f5c\uff1a<\/strong> \u5132\u5b58\u5728\u6b04\u4f4d\u4e2d\u7684\u6578\u503c\u6216\u5b57\u6bcd\u6578\u503c\u3002<\/li>\n<li><strong>\u9650\u5236\uff1a<\/strong> \u8cc7\u6599\u5eab\u5f15\u64ce\u6703\u9632\u6b62\u5b64\u5152\u8a18\u9304\u7684\u7522\u751f\u3002\u9664\u975e\u8a72\u503c\u5b58\u5728\u65bc\u6240\u53c3\u8003\u7684\u4e3b\u9375\u4e2d\uff0c\u5426\u5247\u7121\u6cd5\u5c07\u503c\u63d2\u5165\u5916\u9375\u6b04\u4f4d\u3002<\/li>\n<li><strong>\u7d1a\u806f\uff1a<\/strong> \u5c0d\u7236\u8a18\u9304\uff08\u522a\u9664\u6216\u66f4\u65b0\uff09\u7684\u64cd\u4f5c\u53ef\u6839\u64da\u5df2\u5b9a\u7fa9\u7684\u898f\u5247\u81ea\u52d5\u50b3\u64ad\u5230\u5b50\u8a18\u9304\u3002<\/li>\n<\/ul>\n<h3>2. \u6b63\u898f\u5316\u8207\u5b8c\u6574\u6027<\/h3>\n<p>\u95dc\u4fc2\u578bERD\u512a\u5148\u8003\u616e\u6b63\u898f\u5316\u3002\u6b64\u904e\u7a0b\u900f\u904e\u5c07\u5c6c\u6027\u7d44\u7e54\u6210\u908f\u8f2f\u7fa4\u7d44\u4f86\u6e1b\u5c11\u8cc7\u6599\u5197\u9918\u3002\u7531\u65bc\u6d89\u53ca\u7684\u8868\u683c\u6578\u91cf\u8f03\u591a\uff0c\u4e00\u500b\u826f\u597d\u7684\u6b63\u898f\u5316ERD\u901a\u5e38\u770b\u8d77\u4f86\u66f4\u8907\u96dc\u3002<\/p>\n<ul>\n<li><strong>1NF\uff1a<\/strong> \u78ba\u4fdd\u539f\u5b50\u6027\uff1b\u6bcf\u500b\u55ae\u5143\u683c\u50c5\u5305\u542b\u55ae\u4e00\u503c\u3002<\/li>\n<li><strong>2NF\uff1a<\/strong> \u79fb\u9664\u90e8\u5206\u4f9d\u8cf4\uff1b\u5c6c\u6027\u4f9d\u8cf4\u65bc\u6574\u500b\u4e3b\u9375\u3002<\/li>\n<li><strong>3NF\uff1a<\/strong> \u79fb\u9664\u50b3\u905e\u4f9d\u8cf4\uff1b\u975e\u9375\u5c6c\u6027\u50c5\u4f9d\u8cf4\u65bc\u4e3b\u9375\u3002<\/li>\n<\/ul>\n<p>\u6b64\u7d50\u69cb\u78ba\u4fdd\u8cc7\u6599\u7684\u4e00\u81f4\u6027\u3002\u82e5\u4f7f\u7528\u8005\u66f4\u6539\u59d3\u540d\uff0c\u50c5\u9700\u5728\u4e00\u500b\u5730\u65b9\u66f4\u65b0\uff0c\u6240\u6709\u5f15\u7528\u8a72\u4f7f\u7528\u8005\u7684\u8a18\u9304\u6703\u7acb\u5373\u770b\u5230\u8b8a\u66f4\u3002<\/p>\n<h3>3. \u8655\u7406\u591a\u5c0d\u591a\u95dc\u4fc2<\/h3>\n<p>\u5728\u95dc\u4fc2\u578b\u7cfb\u7d71\u4e2d\uff0c\u591a\u5c0d\u591a\u95dc\u4fc2\u5728\u8a9e\u7fa9\u4e0a\u662f\u660e\u78ba\u5340\u5206\u7684\u3002\u6b64\u60c5\u6cc1\u4e0b\u7121\u6cd5\u76f4\u63a5\u9023\u7d50\u5169\u500b\u8868\u683c\uff0c\u800c\u5fc5\u9808\u4f7f\u7528\u4e2d\u9593\u7684\u95dc\u806f\u8868\u683c\u3002<\/p>\n<ul>\n<li><strong>\u7d50\u69cb\uff1a<\/strong> \u4e00\u500b\u5305\u542b\u5169\u500b\u76f8\u95dc\u5be6\u9ad4\u4e3b\u9375\u7684\u8868\u683c\u3002<\/li>\n<li><strong>\u529f\u80fd\uff1a<\/strong> \u6b64\u8868\u683c\u4f5c\u70ba\u6a4b\u6a11\uff0c\u4f7f\u5be6\u9ad4A\u4e2d\u7684\u591a\u500b\u8a18\u9304\u53ef\u9023\u7d50\u81f3\u5be6\u9ad4B\u4e2d\u7684\u591a\u500b\u8a18\u9304\u3002<\/li>\n<li><strong>\u67e5\u8a62\uff1a<\/strong> \u7372\u53d6\u6b64\u8cc7\u6599\u9700\u8981\u4f7f\u7528 <code>JOIN<\/code> \u64cd\u4f5c\uff0c\u82e5\u672a\u6b63\u78ba\u5efa\u7acb\u7d22\u5f15\uff0c\u5247\u5728\u5927\u578b\u8cc7\u6599\u96c6\u4e0a\u53ef\u80fd\u9020\u6210\u8a08\u7b97\u6210\u672c\u9ad8\u6602\u3002<\/li>\n<\/ul>\n<h2>NoSQL\u74b0\u5883\u4e2d\u7684\u8a9e\u7fa9 \ud83d\udce6<\/h2>\n<p>NoSQL\u8cc7\u6599\u5eab\u63d0\u4f9b\u5f48\u6027\u3002ERD\u7684\u8a9e\u7fa9\u5f9e\u7d50\u69cb\u6027\u5f37\u5236\u8f49\u8b8a\u70ba\u908f\u8f2f\u6027\u5448\u73fe\u3002\u6b64\u5716\u8868\u66f4\u50cf\u662f\u4e00\u7a2e\u8a2d\u8a08\u6a21\u5f0f\u6307\u5357\uff0c\u800c\u975e\u56b4\u683c\u7684\u7d50\u69cb\u5b9a\u7fa9\u3002\u4e0d\u540c\u7684NoSQL\u6a21\u578b\u4ee5\u4e0d\u540c\u65b9\u5f0f\u8655\u7406\u95dc\u4fc2\u3002<\/p>\n<h3>1. \u6587\u4ef6\u5132\u5b58\u8207\u5d4c\u5165<\/h3>\n<p>\u5728\u6587\u4ef6\u5c0e\u5411\u8cc7\u6599\u5eab\u4e2d\uff0c\u8cc7\u6599\u4ee5\u985e\u4f3cJSON\u7684\u6587\u4ef6\u5f62\u5f0f\u5132\u5b58\u3002ERD\u901a\u5e38\u5efa\u8b70\u5c07\u76f8\u95dc\u8cc7\u6599\u76f4\u63a5\u5d4c\u5165\u55ae\u4e00\u6587\u4ef6\u4e2d\uff0c\u4ee5\u512a\u5316\u8b80\u53d6\u6548\u80fd\u3002<\/p>\n<ul>\n<li><strong>\u4e00\u5c0d\u591a\uff1a<\/strong> \u7236\u6587\u4ef6\u53ef\u5305\u542b\u5b50\u7269\u4ef6\u7684\u9663\u5217\u3002\u9019\u53ef\u907f\u514d\u5728\u6aa2\u7d22\u6642\u9700\u8981\u4f7f\u7528\u9023\u63a5\uff08JOIN\uff09\u3002<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong> \u5c0d\u5b50\u8cc7\u6599\u7684\u66f4\u65b0\u9700\u8981\u91cd\u5beb\u6574\u500b\u7236\u6587\u4ef6\u3002\u82e5\u7236\u6587\u4ef6\u8b8a\u5f97\u975e\u5e38\u5927\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u7af6\u722d\u554f\u984c\u3002<\/li>\n<li><strong>\u8b80\u53d6\u8207\u5beb\u5165\uff1a<\/strong> \u6b64\u65b9\u6cd5\u512a\u5316\u8b80\u53d6\u6548\u80fd\u3002\u5b83\u4ee5\u72a7\u7272\u5beb\u5165\u6548\u80fd\u8207\u8cc7\u6599\u5197\u9918\u70ba\u4ee3\u50f9\uff0c\u63db\u53d6\u901f\u5ea6\u3002<\/li>\n<\/ul>\n<h3>2. \u91d1\u9470-\u503c\u5132\u5b58<\/h3>\n<p>\u91d1\u9470-\u503c\u5132\u5b58\u5c07\u8cc7\u6599\u8996\u70ba\u4e0d\u900f\u660e\u7684\u8cc7\u6599\u584a\u3002\u5728\u6b64\u60c5\u5883\u4e0b\uff0cERD \u8a9e\u7fa9\u6975\u70ba\u7c21\u55ae\u3002\u95dc\u4fc2\u901a\u5e38\u7531\u61c9\u7528\u7a0b\u5f0f\u5c64\u63a8\u65b7\uff0c\u800c\u975e\u8cc7\u6599\u5eab\u5f15\u64ce\u3002<\/p>\n<ul>\n<li><strong>\u53c3\u8003\uff1a<\/strong>\u6587\u4ef6\u901a\u5e38\u5305\u542b\u6307\u5411\u53e6\u4e00\u500b\u6587\u4ef6\u7684\u53c3\u8003 ID\uff0c\u985e\u4f3c\u65bc\u5916\u9375\uff0c\u4f46\u6c92\u6709\u5f37\u5236\u57f7\u884c\u3002<\/li>\n<li><strong>\u8cac\u4efb\uff1a<\/strong>\u61c9\u7528\u7a0b\u5f0f\u908f\u8f2f\u5fc5\u9808\u78ba\u4fdd\u6240\u53c3\u8003\u7684 ID \u5b58\u5728\u4e14\u6709\u6548\u3002\u8cc7\u6599\u5eab\u5c64\u9762\u6c92\u6709\u7d04\u675f\u3002<\/li>\n<li><strong>\u4f7f\u7528\u60c5\u5883\uff1a<\/strong>\u6700\u9069\u5408\u7528\u65bc\u5feb\u53d6\u3001\u6703\u8a71\u7ba1\u7406\uff0c\u6216\u95dc\u4fc2\u4e26\u975e\u4e3b\u8981\u8003\u91cf\u7684\u9ad8\u9748\u6d3b\u6027\u8cc7\u6599\u7d50\u69cb\u3002<\/li>\n<\/ul>\n<h3>3. \u5716\u8cc7\u6599\u5eab<\/h3>\n<p>\u5716\u8cc7\u6599\u5eab\u5c08\u70ba\u95dc\u4fc2\u800c\u8a2d\u8a08\u3002\u5728\u6b64\u60c5\u5883\u4e0b\uff0cERD \u76f4\u63a5\u5c0d\u61c9\u5230\u7bc0\u9ede\u8207\u908a\u3002\u9019\u6216\u8a31\u662f\u5be6\u9ad4\u95dc\u4fc2\u5716\u6700\u76f4\u8b6f\u7684\u89e3\u91cb\u3002<\/p>\n<ul>\n<li><strong>\u7bc0\u9ede\uff1a<\/strong>\u4ee3\u8868\u5be6\u9ad4\uff08\u4f8b\u5982\uff1a\u500b\u4eba\u3001\u5730\u9ede\uff09\u3002<\/li>\n<li><strong>\u908a\uff1a<\/strong>\u4ee3\u8868\u95dc\u4fc2\uff08\u4f8b\u5982\uff1a\u5c45\u4f4f\u65bc\u3001\u8a8d\u8b58\uff09\u3002<\/li>\n<li><strong>\u5c6c\u6027\uff1a<\/strong>\u7bc0\u9ede\u8207\u908a\u90fd\u53ef\u4ee5\u9644\u52a0\u5c6c\u6027\u3002<\/li>\n<li><strong>\u904d\u6b77\uff1a<\/strong>\u67e5\u8a62\u6703\u6cbf\u8457\u908a\u9032\u884c\u3002\u95dc\u4fc2\u4e0d\u662f\u4e00\u6b21\u67e5\u95b1\uff1b\u800c\u662f\u4e00\u6bb5\u8def\u5f91\u7684\u904d\u6b77\u3002<\/li>\n<\/ul>\n<h2>\u6a21\u578b\u65b9\u6cd5\u7684\u6bd4\u8f03\u5206\u6790 \ud83d\udcca<\/h2>\n<p>\u7406\u89e3\u9019\u4e9b\u74b0\u5883\u4e4b\u9593\u7684\u5dee\u7570\uff0c\u6709\u52a9\u65bc\u9078\u64c7\u5408\u9069\u7684\u5de5\u5177\u4f86\u5b8c\u6210\u5de5\u4f5c\u3002\u4e0b\u8868\u8aaa\u660e\u4e86 ERD \u8a9e\u7fa9\u5728\u9019\u4e9b\u7cfb\u7d71\u4e4b\u9593\u5982\u4f55\u8f49\u63db\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u529f\u80fd<\/th>\n<th>\u95dc\u806f\u5f0f\uff08SQL\uff09<\/th>\n<th>\u6587\u4ef6\u5132\u5b58<\/th>\n<th>\u5716\u8cc7\u6599\u5eab<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u8cc7\u6599\u7d50\u69cb<\/strong><\/td>\n<td>\u5177\u6709\u5217\u8207\u6b04\u7684\u8868\u683c<\/td>\n<td>JSON \u6587\u4ef6<\/td>\n<td>\u7bc0\u9ede\u8207\u908a<\/td>\n<\/tr>\n<tr>\n<td><strong>\u95dc\u4fc2\u5f37\u5236\u57f7\u884c<\/strong><\/td>\n<td>\u5916\u9375\uff08\u56b4\u683c\uff09<\/td>\n<td>\u624b\u52d5 \/ \u61c9\u7528\u7a0b\u5f0f\u5c64\u7d1a<\/td>\n<td>\u539f\u751f\u908a\u7de3\u53c3\u8003<\/td>\n<\/tr>\n<tr>\n<td><strong>\u67e5\u8a62\u95dc\u4fc2<\/strong><\/td>\n<td>JOIN \u64cd\u4f5c<\/td>\n<td>\u67e5\u8a62\u6216\u5d4c\u5165<\/td>\n<td>\u8def\u5f91\u904d\u6b77<\/td>\n<\/tr>\n<tr>\n<td><strong>\u7d50\u69cb\u5f48\u6027<\/strong><\/td>\n<td>\u56fa\u5b9a\u7d50\u69cb<\/td>\n<td>\u52d5\u614b\u7d50\u69cb<\/td>\n<td>\u534a\u7d50\u69cb\u5316<\/td>\n<\/tr>\n<tr>\n<td><strong>\u4e3b\u8981\u4f7f\u7528\u6848\u4f8b<\/strong><\/td>\n<td>\u4ea4\u6613\u5b8c\u6574\u6027<\/td>\n<td>\u5167\u5bb9\u7ba1\u7406 \/ \u6a39\u72c0\u7d50\u69cb<\/td>\n<td>\u7db2\u8def \/ \u793e\u7fa4\u5716\u5f62<\/td>\n<\/tr>\n<tr>\n<td><strong>\u6b63\u898f\u5316<\/strong><\/td>\n<td>\u9ad8\uff083NF \/ BCNF\uff09<\/td>\n<td>\u4f4e\uff08\u975e\u6b63\u898f\u5316\uff09<\/td>\n<td>\u4e0d\u9069\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u95dc\u4fc2\u5efa\u6a21\uff1a\u6df1\u5165\u63a2\u8a0e \ud83d\udd17<\/h2>\n<p>ERD \u4e2d\u95dc\u4fc2\u7684\u5448\u73fe\u65b9\u5f0f\u6c7a\u5b9a\u4e86\u61c9\u7528\u7a0b\u5f0f\u7684\u67e5\u8a62\u6a21\u5f0f\u8207\u6548\u80fd\u7279\u6027\u3002\u8b93\u6211\u5011\u8a73\u7d30\u63a2\u8a0e\u7279\u5b9a\u7684\u57fa\u6578\u3002<\/p>\n<h3>\u4e00\u5c0d\u4e00\u95dc\u4fc2<\/h3>\n<p>\u9019\u662f\u6700\u7c21\u55ae\u7684\u95dc\u4fc2\u3002Table A \u4e2d\u7684\u4e00\u7b46\u8a18\u9304\u5c0d\u61c9\u5230 Table B \u4e2d\u7684\u552f\u4e00\u4e00\u7b46\u8a18\u9304\u3002<\/p>\n<ul>\n<li><strong>SQL \u5be6\u4f5c\uff1a<\/strong> \u5176\u4e2d\u4e00\u5f35\u8868\u4e2d\u8a2d\u7f6e\u5916\u9375\u4e26\u52a0\u4e0a\u552f\u4e00\u6027\u7d04\u675f\u3002<\/li>\n<li><strong>NoSQL \u5be6\u4f5c\uff1a<\/strong> \u901a\u5e38\u5408\u4f75\u70ba\u55ae\u4e00\u6587\u4ef6\u4ee5\u907f\u514d\u67e5\u8a62\uff0c\u6216\u4ee5\u552f\u4e00\u53c3\u8003\u7368\u7acb\u5132\u5b58\u3002<\/li>\n<li><strong>\u4f55\u6642\u4f7f\u7528\uff1a<\/strong> \u4f7f\u7528\u8005\u8cc7\u6599\u8207\u9a57\u8b49\u8cc7\u8a0a\u5206\u96e2\uff0c\u6216\u8207\u7279\u5b9a\u74b0\u5883\u76f8\u95dc\u7684\u8a2d\u5b9a\u3002<\/li>\n<\/ul>\n<h3>\u4e00\u5c0d\u591a\u95dc\u4fc2<\/h3>\n<p>\u9019\u662f\u6700\u5e38\u898b\u7684\u95dc\u4fc2\u985e\u578b\u3002Table A \u4e2d\u7684\u4e00\u7b46\u8a18\u9304\u8207 Table B \u4e2d\u7684\u591a\u7b46\u8a18\u9304\u76f8\u95dc\u3002<\/p>\n<ul>\n<li><strong>SQL \u5be6\u4f5c\uff1a<\/strong> \u8868 B \u4e2d\u7684\u5916\u9375\u5f15\u7528\u8868 A\u3002<\/li>\n<li><strong>\u6587\u4ef6\u8cc7\u6599\u5eab\uff1a<\/strong> \u5c07\u300c\u591a\u300d\u7684\u4e00\u65b9\u5d4c\u5165\u300c\u4e00\u300d\u7684\u4e00\u65b9\u6587\u4ef6\u4e2d\uff0c\u4f5c\u70ba\u9663\u5217\u3002\u9019\u6a23\u53ef\u4ee5\u9ad8\u6548\u5730\u4e00\u6b21\u8b80\u53d6\u6574\u500b\u5c64\u6b21\u7d50\u69cb\u3002<\/li>\n<li><strong>\u5716\u8cc7\u6599\u5eab\uff1a<\/strong> \u5f9e\u300c\u4e00\u300d\u7684\u7bc0\u9ede\u5efa\u7acb\u908a\uff0c\u9023\u63a5\u5230\u591a\u500b\u300c\u591a\u300d\u7684\u7bc0\u9ede\u3002<\/li>\n<li><strong> \u6ce8\u610f\u4e8b\u9805\uff1a<\/strong> \u5982\u679c\u300c\u591a\u300d\u7684\u4e00\u65b9\u5927\u5e45\u589e\u9577\uff0c\u5c07\u5176\u5d4c\u5165\u6587\u4ef6\u8cc7\u6599\u5eab\u53ef\u80fd\u6703\u9054\u5230\u5132\u5b58\u7a7a\u9593\u4e0a\u9650\u3002\u53ef\u80fd\u9700\u8981\u63a1\u7528\u6df7\u5408\u65b9\u5f0f\uff08\u4f7f\u7528\u53c3\u8003\u800c\u975e\u5d4c\u5165\uff09\u3002<\/li>\n<\/ul>\n<h3>\u591a\u5c0d\u591a\u95dc\u4fc2<\/h3>\n<p>\u6b64\u95dc\u4fc2\u5728 SQL \u4e2d\u9700\u8981\u4e00\u500b\u6a4b\u63a5\u8868\uff0c\u4f46\u5728\u5176\u4ed6\u7cfb\u7d71\u4e2d\u884c\u70ba\u4e0d\u540c\u3002<\/p>\n<ul>\n<li><strong>SQL \u5be6\u4f5c\uff1a<\/strong> \u5305\u542b\u5169\u500b\u7236\u8868 ID \u7684\u6a4b\u63a5\u8868\u3002<\/li>\n<li><strong>\u6587\u4ef6\u8cc7\u6599\u5eab\uff1a<\/strong> \u901a\u5e38\u70ba\u975e\u898f\u7bc4\u5316\u3002\u6bcf\u500b\u6587\u4ef6\u5305\u542b\u4f86\u81ea\u76f8\u95dc\u5be6\u9ad4\u7684 ID \u5217\u8868\u6216\u5b8c\u6574\u7269\u4ef6\u3002\u9019\u6703\u9020\u6210\u8cc7\u6599\u91cd\u8907\uff0c\u4f46\u80fd\u52a0\u5feb\u6aa2\u7d22\u901f\u5ea6\u3002<\/li>\n<li><strong>\u5716\u8cc7\u6599\u5eab\uff1a<\/strong> \u9019\u6b63\u662f\u8a72\u6a21\u578b\u7684\u539f\u751f\u512a\u52e2\u3002\u7bc0\u9ede\u76f4\u63a5\u76f8\u9023\uff0c\u7121\u9700\u4e2d\u9593\u8868\u683c\u3002<\/li>\n<li><strong>\u4e00\u81f4\u6027\u6311\u6230\uff1a<\/strong> \u5728\u6587\u4ef6\u8cc7\u6599\u5eab\u4e2d\uff0c\u4fdd\u6301\u591a\u500b\u6587\u4ef6\u4e4b\u9593\u7684\u5217\u8868\u540c\u6b65\u5f88\u56f0\u96e3\u3002\u5c0d\u5171\u4eab\u5be6\u9ad4\u7684\u66f4\u65b0\u5fc5\u9808\u624b\u52d5\u50b3\u64ad\u5230\u6240\u6709\u5f15\u7528\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<h2>\u7d50\u69cb\u6f14\u9032\u8207\u5f48\u6027 \ud83d\udd04<\/h2>\n<p>\u8edf\u9ad4\u9700\u6c42\u6703\u8b8a\u66f4\u3002\u8cc7\u6599\u6a21\u578b\u5fc5\u9808\u5728\u4e0d\u7834\u58de\u73fe\u6709\u61c9\u7528\u7a0b\u5f0f\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\u6f14\u9032\u3002ERD \u7684\u8a9e\u7fa9\u6c7a\u5b9a\u4e86\u9019\u7a2e\u6f14\u9032\u7684\u96e3\u6613\u7a0b\u5ea6\u3002<\/p>\n<h3>1. SQL \u4e2d\u7684\u7d50\u69cb\u9077\u79fb<\/h3>\n<p>\u66f4\u6539\u95dc\u4fc2\u578b\u7d50\u69cb\u662f\u4e00\u9805\u91cd\u5927\u64cd\u4f5c\u3002\u901a\u5e38\u6d89\u53ca\u9396\u5b9a\u8868\u683c\u6216\u5728\u505c\u6a5f\u671f\u9593\u57f7\u884c\u9077\u79fb\u3002<\/p>\n<ul>\n<li><strong>\u65b0\u589e\u6b04\u4f4d\uff1a<\/strong> \u901a\u5e38\u5b89\u5168\u4e14\u5feb\u901f\u3002<\/li>\n<li><strong> \u66f4\u6539\u6b04\u4f4d\u540d\u7a31\uff1a<\/strong> \u9700\u8981\u91cd\u5beb\u8868\u683c\u7d50\u69cb\u4e26\u66f4\u65b0\u6240\u6709\u76f8\u95dc\u67e5\u8a62\u3002<\/li>\n<li><strong>\u66f4\u6539\u8cc7\u6599\u985e\u578b\uff1a<\/strong> \u5982\u679c\u8cc7\u6599\u8f49\u63db\u5931\u6557\uff0c\u6216\u61c9\u7528\u7a0b\u5f0f\u908f\u8f2f\u4f9d\u8cf4\u820a\u985e\u578b\uff0c\u53ef\u80fd\u6703\u6709\u98a8\u96aa\u3002<\/li>\n<\/ul>\n<h3>2. NoSQL \u4e2d\u7684\u7d50\u69cb\u5f48\u6027<\/h3>\n<p>NoSQL \u7cfb\u7d71\u901a\u5e38\u5141\u8a31\u7121\u7d50\u69cb\u6216\u8b80\u53d6\u6642\u7d50\u69cb\u7684\u65b9\u6cd5\u3002ERD \u53ea\u662f\u6307\u5c0e\u539f\u5247\uff0c\u800c\u975e\u6cd5\u898f\u3002<\/p>\n<ul>\n<li><strong>\u65b0\u589e\u6b04\u4f4d\uff1a<\/strong> \u60a8\u53ef\u4ee5\u5411\u7279\u5b9a\u6587\u4ef6\u65b0\u589e\u6b04\u4f4d\uff0c\u800c\u4e0d\u5f71\u97ff\u5176\u4ed6\u6587\u4ef6\u3002<\/li>\n<li><strong>\u7248\u672c\u63a7\u5236\uff1a<\/strong> \u70ba\u6587\u4ef6\u6dfb\u52a0\u7248\u672c\u865f\u78bc\u4ee5\u7ba1\u7406\u96a8\u6642\u9593\u8b8a\u5316\u7684\u4e0d\u540c\u7d50\u69cb\uff0c\u9019\u662f\u5f88\u5e38\u898b\u7684\u505a\u6cd5\u3002<\/li>\n<li><strong>\u6b0a\u8861\uff1a<\/strong> \u7f3a\u4e4f\u5f37\u5236\u57f7\u884c\u6a5f\u5236\u610f\u5473\u8457\u53ef\u80fd\u6703\u51fa\u73fe\u8cc7\u6599\u54c1\u8cea\u554f\u984c\u3002\u61c9\u7528\u7a0b\u5f0f\u5fc5\u9808\u5728\u5beb\u5165\u524d\u9a57\u8b49\u8cc7\u6599\u3002<\/li>\n<\/ul>\n<h2>\u6a21\u578b\u9078\u64c7\u7684\u6548\u80fd\u5f71\u97ff \u26a1<\/h2>\n<p>\u60a8\u7684ERD\u7d50\u69cb\u6703\u76f4\u63a5\u5f71\u97ff\u67e5\u8a62\u901f\u5ea6\u3002\u4e26\u7121\u842c\u80fd\u89e3\u6cd5\uff1b\u8a2d\u8a08\u5fc5\u9808\u8207\u61c9\u7528\u7a0b\u5f0f\u7684\u5b58\u53d6\u6a21\u5f0f\u4e00\u81f4\u3002<\/p>\n<h3>1. \u8b80\u53d6\u5bc6\u96c6\u578b\u5de5\u4f5c\u8ca0\u8f09<\/h3>\n<p>\u5982\u679c\u61c9\u7528\u7a0b\u5f0f\u7d93\u5e38\u8b80\u53d6\u8cc7\u6599\u4f46\u66f4\u65b0\u6b21\u6578\u8f03\u5c11\uff0c\u53cd\u898f\u7bc4\u5316\u662f\u6709\u76ca\u7684\u3002<\/p>\n<ul>\n<li><strong>\u7b56\u7565\uff1a<\/strong> \u5c07\u76f8\u95dc\u8cc7\u6599\u5167\u5d4c\uff0c\u4ee5\u6e1b\u5c11\u6240\u9700\u7684\u67e5\u8a62\u6b21\u6578\u3002<\/li>\n<li><strong>\u512a\u52e2\uff1a<\/strong> \u66f4\u5c11\u7684I\/O\u64cd\u4f5c\u8207\u66f4\u4f4e\u7684\u5ef6\u9072\u3002<\/li>\n<li><strong>\u6210\u672c\uff1a<\/strong> \u5132\u5b58\u7a7a\u9593\u4f7f\u7528\u91cf\u589e\u52a0\uff0c\u4e14\u66f4\u65b0\u908f\u8f2f\u66f4\u70ba\u8907\u96dc\u3002<\/li>\n<\/ul>\n<h3>2. \u5beb\u5165\u5bc6\u96c6\u578b\u5de5\u4f5c\u8ca0\u8f09<\/h3>\n<p>\u5982\u679c\u61c9\u7528\u7a0b\u5f0f\u7d93\u5e38\u66f4\u65b0\u8cc7\u6599\uff0c\u5247\u5efa\u8b70\u4f7f\u7528\u898f\u7bc4\u5316\u6216\u7368\u7acb\u5132\u5b58\u3002<\/p>\n<ul>\n<li><strong>\u7b56\u7565\uff1a<\/strong> \u5c07\u8cc7\u6599\u5132\u5b58\u65bc\u6700\u539f\u5b50\u7684\u5f62\u5f0f\uff0c\u4e26\u5728\u67e5\u8a62\u6642\u9032\u884c\u9023\u63a5\u6216\u53c3\u8003\u3002<\/li>\n<li><strong>\u512a\u52e2\uff1a<\/strong> \u552f\u4e00\u7684\u8cc7\u6599\u4f86\u6e90\uff1b\u66f4\u65b0\u50c5\u767c\u751f\u5728\u4e00\u500b\u5730\u65b9\u3002<\/li>\n<li><strong>\u6210\u672c\uff1a<\/strong> \u56e0\u9023\u63a5\u6216\u591a\u6b21\u67e5\u8a62\u5c0e\u81f4\u8b80\u53d6\u5ef6\u9072\u66f4\u9ad8\u3002<\/li>\n<\/ul>\n<h3>3. \u7d22\u5f15\u7b56\u7565<\/h3>\n<p>\u7121\u8ad6\u8cc7\u6599\u5eab\u985e\u578b\u70ba\u4f55\uff0cERD\u90fd\u6703\u6307\u51fa\u9700\u8981\u5efa\u7acb\u7d22\u5f15\u7684\u4f4d\u7f6e\u3002<\/p>\n<ul>\n<li><strong>\u95dc\u806f\u5f0f\uff1a<\/strong> \u7d22\u5f15\u61c9\u8a2d\u7f6e\u65bc\u5916\u9375\u53ca\u7528\u65bc <code>WHERE<\/code> \u5b50\u53e5\u4e2d\u7684\u6b04\u4f4d\u3002<\/li>\n<li><strong>\u6587\u4ef6\uff1a<\/strong>\u7d22\u5f15\u653e\u7f6e\u5728\u7ecf\u5e38\u88ab\u67e5\u8be2\u7684\u6b04\u4f4d\u4e0a\u3002\u5d4c\u5957\u6b04\u4f4d\u53ef\u80fd\u9700\u8981\u7279\u5b9a\u7684\u7d22\u5f15\u8a9e\u6cd5\u3002<\/li>\n<li><strong>\u5716\u5f62\uff1a<\/strong>\u7d22\u5f15\u653e\u7f6e\u5728\u7bc0\u9ede\u6a19\u7c64\u548c\u908a\u7de3\u5c6c\u6027\u4e0a\uff0c\u4ee5\u52a0\u5feb\u904d\u6b77\u7684\u8d77\u9ede\u3002<\/li>\n<\/ul>\n<h2>\u6df7\u5408\u74b0\u5883\u8207\u591a\u8a9e\u8a00\u6301\u4e45\u5316 \ud83e\udde9<\/h2>\n<p>\u73fe\u4ee3\u67b6\u69cb\u901a\u5e38\u540c\u6642\u4f7f\u7528\u591a\u7a2e\u8cc7\u6599\u5eab\u6280\u8853\u3002\u9019\u88ab\u7a31\u70ba\u591a\u8a9e\u8a00\u6301\u4e45\u5316\u3002ERD \u7684\u8a9e\u7fa9\u5fc5\u9808\u5f4c\u88dc\u9019\u4e9b\u5dee\u7570\u3002<\/p>\n<h3>1. \u6578\u64da\u4e00\u81f4\u6027\u6a21\u5f0f<\/h3>\n<p>\u7576\u8cc7\u6599\u8de8\u8d8a\u591a\u500b\u7cfb\u7d71\u6642\uff0c\u4e00\u81f4\u6027\u8b8a\u5f97\u8907\u96dc\u3002<\/p>\n<ul>\n<li><strong>ACID\uff1a<\/strong>\u95dc\u4fc2\u578b\u8cc7\u6599\u5eab\u63d0\u4f9b\u5f37\u4e00\u81f4\u6027\u3002\u4e8b\u52d9\u8de8\u8d8a\u540c\u4e00\u8cc7\u6599\u5eab\u4e2d\u7684\u591a\u500b\u8868\u683c\u3002<\/li>\n<li><strong>BASE\uff1a<\/strong>NoSQL \u8cc7\u6599\u5eab\u901a\u5e38\u504f\u597d\u53ef\u7528\u6027\u548c\u6700\u7d42\u4e00\u81f4\u6027\u3002\u4e8b\u52d9\u53ef\u80fd\u50c5\u9650\u65bc\u55ae\u4e00\u6587\u4ef6\u3002<\/li>\n<li><strong>Saga \u6a21\u5f0f\uff1a<\/strong> \u5c0d\u65bc\u8de8\u7cfb\u7d71\u7684\u5206\u6563\u5f0f\u4e8b\u52d9\uff0cSaga \u6a21\u5f0f\u900f\u904e\u5354\u8abf\u672c\u5730\u4e8b\u52d9\u4f86\u7ba1\u7406\u9577\u6642\u9593\u57f7\u884c\u7684\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h3>2. ERD \u5728\u6df7\u5408\u7cfb\u7d71\u4e2d\u7684\u89d2\u8272<\/h3>\n<p>ERD \u8d77\u5230\u6982\u5ff5\u5730\u5716\u7684\u4f5c\u7528\u3002\u5b83\u5b9a\u7fa9\u4e86\u908f\u8f2f\u95dc\u4fc2\uff0c\u5373\u4f7f\u7269\u7406\u5132\u5b58\u65b9\u5f0f\u4e0d\u540c\u3002<\/p>\n<ul>\n<li><strong>\u6620\u5c04\uff1a<\/strong> \u958b\u767c\u4eba\u54e1\u4f7f\u7528 ERD \u6c7a\u5b9a\u54ea\u4e9b\u8cc7\u6599\u61c9\u5b58\u653e\u5728\u54ea\u500b\u5132\u5b58\u4f4d\u7f6e\u3002<\/li>\n<li><strong>\u6574\u5408\uff1a<\/strong> \u8a72\u5716\u8868\u6709\u52a9\u65bc\u76f4\u89c0\u5730\u986f\u793a\u7cfb\u7d71\u4e4b\u9593\u9700\u8981\u8cc7\u6599\u540c\u6b65\u7684\u4f4d\u7f6e\u3002<\/li>\n<li><strong>\u6587\u4ef6\uff1a<\/strong> \u5b83\u70ba\u53ef\u80fd\u4e0d\u4e86\u89e3\u5132\u5b58\u5f15\u64ce\u4e4b\u9593\u6280\u8853\u5dee\u7570\u7684\u5229\u5bb3\u95dc\u4fc2\u4eba\u63d0\u4f9b\u4e86\u4e00\u500b\u7d71\u4e00\u7684\u8996\u5716\u3002<\/li>\n<\/ul>\n<h2>\u7a69\u5065\u8cc7\u6599\u5efa\u6a21\u7684\u6700\u4f73\u5be6\u52d9 \ud83d\udee1\ufe0f<\/h2>\n<p>\u70ba\u78ba\u4fdd\u9577\u671f\u7684\u53ef\u7dad\u8b77\u6027\u548c\u6027\u80fd\uff0c\u8a2d\u8a08 ERD \u6642\u61c9\u9075\u5faa\u9019\u4e9b\u539f\u5247\u3002<\/p>\n<ul>\n<li><strong>\u7406\u89e3\u9818\u57df\uff1a<\/strong> \u5f9e\u696d\u52d9\u9700\u6c42\u958b\u59cb\u3002\u4e0d\u8981\u5efa\u6a21\u4e0d\u652f\u63f4\u7279\u5b9a\u4f7f\u7528\u6848\u4f8b\u7684\u8cc7\u6599\u3002<\/li>\n<li><strong>\u9078\u64c7\u5408\u9069\u7684\u5de5\u5177\uff1a<\/strong> \u6839\u64da\u8cc7\u6599\u95dc\u4fc2\u9078\u64c7\u8cc7\u6599\u5eab\u985e\u578b\uff0c\u800c\u4e0d\u50c5\u50c5\u662f\u8da8\u52e2\u3002\u4f7f\u7528\u5716\u5f62\u8cc7\u6599\u5eab\u8655\u7406\u8907\u96dc\u7db2\u8def\uff0c\u6587\u4ef6\u8cc7\u6599\u5eab\u8655\u7406\u5167\u5bb9\uff0cSQL \u8cc7\u6599\u5eab\u8655\u7406\u4ea4\u6613\u3002<\/li>\n<li><strong>\u660e\u78ba\u8a18\u9304\u95dc\u4fc2\uff1a<\/strong> \u5728\u5716\u8868\u4e0a\u660e\u78ba\u6a19\u793a\u57fa\u6578\u3002\u6a21\u7cca\u4e0d\u6e05\u6703\u5c0e\u81f4\u5be6\u4f5c\u932f\u8aa4\u3002<\/li>\n<li><strong>\u898f\u5283\u6210\u9577\uff1a<\/strong> \u8003\u616e\u8cc7\u6599\u91cf\u5c07\u5982\u4f55\u64f4\u5c55\u3002\u5d4c\u5165\u5f0f\u9663\u5217\u6703\u4e0d\u6703\u8b8a\u5f97\u592a\u5927\uff1f\u95dc\u806f\u8868\u683c\u6703\u4e0d\u6703\u6210\u70ba\u74f6\u9838\uff1f<\/li>\n<li><strong> \u8fed\u4ee3\u8a2d\u8a08\uff1a<\/strong> ERD \u4e0d\u662f\u975c\u614b\u7684\u3002\u96a8\u8457\u61c9\u7528\u7a0b\u5f0f\u6f14\u9032\u8207\u767c\u73fe\u65b0\u7684\u9650\u5236\uff0c\u61c9\u6301\u7e8c\u512a\u5316\u5b83\u5011\u3002<\/li>\n<li><strong> \u5728\u61c9\u7528\u7a0b\u5f0f\u5c64\u9762\u9032\u884c\u9a57\u8b49\uff1a<\/strong> \u7279\u5225\u662f\u5728 NoSQL \u4e2d\uff0c\u61c9\u5be6\u4f5c\u9a57\u8b49\u908f\u8f2f\u4ee5\u78ba\u4fdd\u8cc7\u6599\u5b8c\u6574\u6027\uff0c\u56e0\u70ba\u8cc7\u6599\u5eab\u53ef\u80fd\u4e0d\u6703\u5f37\u5236\u57f7\u884c\u3002<\/li>\n<\/ul>\n<h2> \u8cc7\u6599\u6a21\u578b\u8a9e\u7fa9\u7684\u7d50\u8ad6 \ud83d\udcdd<\/h2>\n<p>\u5be6\u9ad4\u95dc\u4fc2\u5716\u7684\u8a9e\u7fa9\u4e26\u975e\u666e\u904d\u9069\u7528\uff1b\u5b83\u6703\u6839\u64da\u5e95\u5c64\u5132\u5b58\u6280\u8853\u800c\u8abf\u6574\u3002\u5728\u95dc\u806f\u5f0f\u7cfb\u7d71\u4e2d\uff0cERD \u662f\u7531\u8cc7\u6599\u5eab\u5f15\u64ce\u5f37\u5236\u57f7\u884c\u7684\u5408\u7d04\u3002\u5728 NoSQL 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