{"id":4138,"date":"2026-03-27T02:16:59","date_gmt":"2026-03-27T02:16:59","guid":{"rendered":"https:\/\/www.diagrams-ai.com\/tw\/dfd-explained-simply-beginners-guide\/"},"modified":"2026-03-27T02:16:59","modified_gmt":"2026-03-27T02:16:59","slug":"dfd-explained-simply-beginners-guide","status":"publish","type":"post","link":"https:\/\/www.diagrams-ai.com\/tw\/dfd-explained-simply-beginners-guide\/","title":{"rendered":"DFD \u7c21\u55ae\u89e3\u91cb\uff1a\u6578\u64da\u6d41\u5716\u5165\u9580\u6307\u5357"},"content":{"rendered":"<p>\u6578\u64da\u6d41\u5716\uff08DFD\uff09\u662f\u7528\u65bc\u53ef\u8996\u5316\u8cc7\u8a0a\u5728\u7cfb\u7d71\u4e2d\u5982\u4f55\u6d41\u52d5\u7684\u95dc\u9375\u5de5\u5177\u3002\u7121\u8ad6\u60a8\u6b63\u5728\u8a2d\u8a08\u65b0\u61c9\u7528\u7a0b\u5f0f\u3001\u898f\u5283\u696d\u52d9\u6d41\u7a0b\uff0c\u9084\u662f\u5206\u6790\u73fe\u6709\u7684\u5de5\u4f5c\u6d41\u7a0b\uff0c\u7406\u89e3\u8cc7\u6599\u6d41\u52d5\u90fd\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6307\u5357\u5c07 DFD \u7684\u6982\u5ff5\u5206\u89e3\u70ba\u6613\u65bc\u7ba1\u7406\u7684\u90e8\u5206\uff0c\u8457\u91cd\u65bc\u6e05\u6670\u6027\u8207\u5be6\u969b\u61c9\u7528\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Hand-drawn infographic explaining Data Flow Diagrams (DFDs) for beginners: visual guide covering the four core components (external entities, processes, data stores, data flows), hierarchical DFD levels (Context\/Level 0, Level 1, Level 2+), notation style comparison (Yourdon &amp; DeMarco vs Gane &amp; Sarson), step-by-step creation process, common pitfalls to avoid, and key benefits for system design, communication, and requirement analysis\" decoding=\"async\" src=\"https:\/\/www.diagrams-ai.com\/wp-content\/uploads\/2026\/03\/data-flow-diagram-dfd-beginner-guide-infographic-hand-drawn.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83e\uddd0 \u4ec0\u9ebc\u662f\u6578\u64da\u6d41\u5716\uff1f<\/h2>\n<p>\u6578\u64da\u6d41\u5716\u662f\u4e00\u7a2e\u4ee5\u5716\u5f62\u65b9\u5f0f\u5448\u73fe\u8cc7\u6599\u5728\u8cc7\u8a0a\u7cfb\u7d71\u4e2d\u6d41\u52d5\u7684\u8868\u793a\u6cd5\u3002\u8207\u5c08\u6ce8\u65bc\u63a7\u5236\u908f\u8f2f\u548c\u6c7a\u7b56\u9ede\u7684\u6d41\u7a0b\u5716\u4e0d\u540c\uff0cDFD \u50c5\u95dc\u6ce8\u8cc7\u6599\u5f9e\u8f38\u5165\u4f86\u6e90\u5230\u8f38\u51fa\u76ee\u7684\u5730\u7684\u79fb\u52d5\u3002\u5b83\u5e6b\u52a9\u5229\u76ca\u76f8\u95dc\u8005\u7406\u89e3\u9700\u8981\u54ea\u4e9b\u8cc7\u6599\u3001\u8cc7\u6599\u4f86\u81ea\u4f55\u8655\u3001\u5982\u4f55\u88ab\u8655\u7406\uff0c\u4ee5\u53ca\u6700\u7d42\u6703\u5230\u9054\u54ea\u88e1\u3002<\/p>\n<p>\u53ef\u5c07 DFD \u8996\u70ba\u7cfb\u7d71\u8cc7\u8a0a\u7684\u5730\u5716\u3002\u5b83\u4e26\u4e0d\u6703\u4ee5\u7dda\u6027\u65b9\u5f0f\u986f\u793a\u6642\u9593\u6216\u4e8b\u4ef6\u7684\u9806\u5e8f\uff0c\u800c\u662f\u5448\u73fe\u8cc7\u6599\u7684\u9023\u63a5\u6027\u8207\u8f49\u63db\u904e\u7a0b\u3002\u9019\u4f7f\u5f97\u5b83\u5728\u9700\u6c42\u6536\u96c6\u968e\u6bb5\u5c0d\u7cfb\u7d71\u5206\u6790\u5e2b\u548c\u958b\u767c\u4eba\u54e1\u5c24\u70ba\u6709\u7528\u3002<\/p>\n<h2>\ud83e\udde9 \u56db\u500b\u6838\u5fc3\u7d44\u4ef6<\/h2>\n<p>\u8981\u5efa\u7acb\u6709\u6548\u7684 DFD\uff0c\u60a8\u5fc5\u9808\u7406\u89e3\u56db\u500b\u57fa\u672c\u69cb\u6210\u8981\u7d20\u3002\u6bcf\u500b\u5716\u8868\u90fd\u662f\u7531\u9019\u4e9b\u5143\u7d20\u69cb\u5efa\u800c\u6210\u3002\u6b63\u78ba\u4f7f\u7528\u9019\u4e9b\u5143\u7d20\uff0c\u53ef\u78ba\u4fdd\u5716\u8868\u6e96\u78ba\u53cd\u6620\u7cfb\u7d71\u7684\u908f\u8f2f\u3002<\/p>\n<ul>\n<li><strong>\u5916\u90e8\u5be6\u9ad4<\/strong>\uff08\u6216\u7d42\u7d50\u8005\uff09\uff1a\u9019\u4e9b\u4ee3\u8868\u7cfb\u7d71\u908a\u754c\u5916\u7684\u8cc7\u6599\u4f86\u6e90\u6216\u76ee\u7684\u5730\u3002\u7bc4\u4f8b\u5305\u62ec\u4f7f\u7528\u8005\u3001\u5176\u4ed6\u7cfb\u7d71\u6216\u7d44\u7e54\u3002\u5b83\u5011\u662f\u8cc7\u6599\u6d41\u7684\u8d77\u9ede\u6216\u7d42\u9ede\u3002<\/li>\n<li><strong>\u8655\u7406\u904e\u7a0b<\/strong>\uff1a\u9019\u4e9b\u662f\u5c07\u8f38\u5165\u8cc7\u6599\u8f49\u63db\u70ba\u8f38\u51fa\u8cc7\u6599\u7684\u52d5\u4f5c\u3002\u8655\u7406\u904e\u7a0b\u6703\u4ee5\u67d0\u7a2e\u65b9\u5f0f\u6539\u8b8a\u8cc7\u6599\uff0c\u4f8b\u5982\u8a08\u7b97\u7e3d\u984d\u3001\u9a57\u8b49\u8f38\u5165\u5167\u5bb9\u6216\u6392\u5e8f\u6e05\u55ae\u3002\u6bcf\u500b\u8655\u7406\u904e\u7a0b\u90fd\u5fc5\u9808\u6709\u63cf\u8ff0\u8a72\u52d5\u4f5c\u7684\u540d\u7a31\u3002<\/li>\n<li><strong>\u8cc7\u6599\u5132\u5b58<\/strong>\uff1a\u9019\u4e9b\u662f\u8cc7\u6599\u88ab\u5132\u5b58\u4ee5\u4f9b\u5f8c\u7e8c\u4f7f\u7528\u7684\u5132\u5b58\u5eab\u3002\u5b83\u5011\u4ee3\u8868\u8cc7\u6599\u5eab\u3001\u6a94\u6848\uff0c\u6216\u4efb\u4f55\u8cc7\u8a0a\u88ab\u4fdd\u5b58\u7684\u5730\u65b9\u3002\u8cc7\u6599\u6d41\u5165\u5132\u5b58\u5eab\u4ee5\u9032\u884c\u8a18\u9304\uff0c\u4e26\u5f9e\u5132\u5b58\u5eab\u6d41\u51fa\u4ee5\u88ab\u53d6\u51fa\u3002<\/li>\n<li><strong>\u8cc7\u6599\u6d41<\/strong>\uff1a\u9019\u4e9b\u662f\u986f\u793a\u8cc7\u6599\u79fb\u52d5\u65b9\u5411\u7684\u7bad\u982d\u3002\u5b83\u5011\u9023\u63a5\u5be6\u9ad4\u3001\u8655\u7406\u904e\u7a0b\u8207\u5132\u5b58\u5eab\u3002\u6bcf\u4e00\u500b\u8cc7\u6599\u6d41\u90fd\u5fc5\u9808\u6709\u6a19\u7c64\uff0c\u7528\u4ee5\u63cf\u8ff0\u6b63\u5728\u79fb\u52d5\u7684\u7279\u5b9a\u8cc7\u6599\u3002<\/li>\n<\/ul>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8cc7\u6599\u4e0d\u80fd\u6191\u7a7a\u51fa\u73fe\u6216\u6d88\u5931\u3002\u6bcf\u500b\u8f38\u5165\u90fd\u5fc5\u9808\u7522\u751f\u8f38\u51fa\uff0c\u6216\u88ab\u5132\u5b58\u3002\u6b64\u539f\u5247\u7a31\u70ba\u8cc7\u6599\u5b88\u6046\u3002<\/p>\n<h2>\ud83d\udcc9 \u7406\u89e3 DFD \u5c64\u7d1a<\/h2>\n<p>DFD \u662f\u5c64\u7d1a\u5f0f\u7684\u3002\u60a8\u5f9e\u9ad8\u968e\u8996\u5716\u958b\u59cb\uff0c\u4e26\u6839\u64da\u9700\u8981\u9010\u6b65\u5206\u89e3\u70ba\u66f4\u8a73\u7d30\u7684\u8996\u5716\u3002\u9019\u7a2e\u6280\u8853\u53ef\u900f\u904e\u5728\u5fc5\u8981\u524d\u96b1\u85cf\u7d30\u7bc0\u4f86\u7ba1\u7406\u8907\u96dc\u6027\u3002<\/p>\n<h3>1. \u4e0a\u4e0b\u6587\u5716\uff08\u7b2c 0 \u5c64\uff09<\/h3>\n<p>\u4e0a\u4e0b\u6587\u5716\u662f\u62bd\u8c61\u5c64\u7d1a\u6700\u9ad8\u7684\u5716\u8868\u3002\u5b83\u5c07\u7cfb\u7d71\u5448\u73fe\u70ba\u55ae\u4e00\u8655\u7406\u904e\u7a0b\uff0c\u4e26\u986f\u793a\u5176\u8207\u5916\u90e8\u5be6\u9ad4\u7684\u4e92\u52d5\u3002\u4e0a\u4e0b\u6587\u5716\u4e2d\u6c92\u6709\u8cc7\u6599\u5132\u5b58\u3002\u5b83\u56de\u7b54\u7684\u554f\u984c\u662f\uff1a\u300c\u9019\u500b\u7cfb\u7d71\u7684\u4e3b\u8981\u529f\u80fd\u662f\u4ec0\u9ebc\uff1f\u300d<\/p>\n<ul>\n<li>\u4e00\u500b\u4ee3\u8868\u6574\u500b\u7cfb\u7d71\u7684\u4e2d\u592e\u8655\u7406\u904e\u7a0b\u3002<\/li>\n<li>\u5305\u570d\u5728\u5b83\u5468\u570d\u7684\u6240\u6709\u5916\u90e8\u5be6\u9ad4\u3002<\/li>\n<li>\u4e3b\u8981\u8cc7\u6599\u6d41\u9032\u5165\u8207\u96e2\u958b\u7cfb\u7d71\u3002<\/li>\n<\/ul>\n<h3>2. \u7b2c 1 \u5c64\u5716<\/h3>\n<p>\u7b2c 1 \u5c64\u5716\u5c07\u4e0a\u4e0b\u6587\u5716\u4e2d\u7684\u55ae\u4e00\u8655\u7406\u904e\u7a0b\u5206\u89e3\u70ba\u4e3b\u8981\u7684\u5b50\u904e\u7a0b\u3002\u9019\u6b63\u662f\u60a8\u958b\u59cb\u770b\u5230\u5167\u90e8\u7d50\u69cb\u7684\u5730\u65b9\u3002\u60a8\u6703\u770b\u5230\u8cc7\u6599\u5132\u5b58\u8207\u66f4\u660e\u78ba\u7684\u8cc7\u6599\u6d41\u3002<\/p>\n<ul>\n<li>\u986f\u793a\u904b\u884c\u7cfb\u7d71\u6240\u9700\u7684\u4e3b\u529f\u80fd\u3002<\/li>\n<li>\u8b58\u5225\u8cc7\u6599\u5728\u5167\u90e8\u7684\u5132\u5b58\u4f4d\u7f6e\u3002<\/li>\n<li>\u5c07\u5916\u90e8\u5be6\u9ad4\u8207\u7279\u5b9a\u8655\u7406\u904e\u7a0b\u9023\u63a5\u8d77\u4f86\u3002<\/li>\n<\/ul>\n<h3>3. \u7b2c 2 \u5c64\u5716\u53ca\u66f4\u9032\u4e00\u6b65<\/h3>\n<p>\u5982\u679c\u7b2c 1 \u5c64\u5716\u4e2d\u7684\u67d0\u500b\u8655\u7406\u904e\u7a0b\u904e\u65bc\u8907\u96dc\uff0c\u60a8\u53ef\u4ee5\u9032\u4e00\u6b65\u5206\u89e3\u70ba\u7b2c 2 \u5c64\u5716\u3002\u9019\u7a2e\u6df1\u5165\u5206\u6790\u6301\u7e8c\u9032\u884c\uff0c\u76f4\u5230\u8655\u7406\u904e\u7a0b\u7c21\u55ae\u5230\u8db3\u4ee5\u5be6\u73fe\u70ba\u6b62\u3002\u901a\u5e38\uff0c\u7576\u908f\u8f2f\u6e05\u6670\u5230\u8db3\u4ee5\u9032\u884c\u7a0b\u5f0f\u8a2d\u8a08\u6216\u57f7\u884c\u6642\uff0c\u60a8\u5c31\u6703\u505c\u6b62\u5206\u89e3\u3002<\/p>\n<h2>\ud83c\udfa8 \u7b26\u865f\u98a8\u683c\u6bd4\u8f03<\/h2>\n<p>\u7e6a\u88fd\u8cc7\u6599\u6d41\u7a0b\u5716\uff08DFD\uff09\u4e3b\u8981\u6709\u5169\u7a2e\u98a8\u683c\u3002\u96d6\u7136\u5b83\u5011\u4ee3\u8868\u76f8\u540c\u7684\u908f\u8f2f\u6982\u5ff5\uff0c\u4f46\u7b26\u865f\u7565\u6709\u4e0d\u540c\u3002\u9078\u64c7\u5408\u9069\u7684\u7b26\u865f\u98a8\u683c\u53d6\u6c7a\u65bc\u5718\u968a\u7684\u504f\u597d\u6216\u696d\u754c\u6a19\u6e96\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u7d44\u4ef6<\/th>\n<th>Yourdon &amp; DeMarco<\/th>\n<th>Gane &amp; Sarson<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6d41\u7a0b<\/td>\n<td>\u5713\u89d2\u77e9\u5f62<\/td>\n<td>\u5713\u89d2\u77e9\u5f62<\/td>\n<\/tr>\n<tr>\n<td>\u8cc7\u6599\u5132\u5b58<\/td>\n<td>\u958b\u53e3\u77e9\u5f62<\/td>\n<td>\u4e00\u908a\u958b\u53e3\u7684\u77e9\u5f62<\/td>\n<\/tr>\n<tr>\n<td>\u5916\u90e8\u5be6\u9ad4<\/td>\n<td>\u77e9\u5f62<\/td>\n<td>\u77e9\u5f62<\/td>\n<\/tr>\n<tr>\n<td>\u8cc7\u6599\u6d41<\/td>\n<td>\u66f2\u7dda\u7bad\u982d<\/td>\n<td>\u76f4\u7dda\u7bad\u982d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5169\u7a2e\u7b26\u865f\u98a8\u683c\u90fd\u662f\u6709\u6548\u7684\u3002\u95dc\u9375\u5728\u65bc\u4e00\u81f4\u6027\u3002\u5982\u679c\u60a8\u7684\u5718\u968a\u4f7f\u7528 Gane &amp; Sarson \u98a8\u683c\uff0c\u8acb\u5728\u6240\u6709\u5716\u8868\u4e2d\u5805\u6301\u4f7f\u7528\u3002\u6df7\u5408\u4f7f\u7528\u7b26\u865f\u53ef\u80fd\u6703\u8b93\u8b80\u8005\u6df7\u6dc6\uff0c\u4e26\u6a21\u7cca\u5716\u8868\u7684\u542b\u7fa9\u3002<\/p>\n<h2>\ud83d\udee0\ufe0f \u5206\u6b65\u6d41\u7a0b\u5efa\u7acb<\/h2>\n<p>\u5efa\u7acb\u8cc7\u6599\u6d41\u7a0b\u5716\uff08DFD\uff09\u662f\u4e00\u9805\u908f\u8f2f\u6027\u7684\u5de5\u4f5c\u3002\u96d6\u7136\u958b\u59cb\u6642\u4e0d\u9700\u8981\u7279\u5b9a\u5de5\u5177\uff0c\u4f46\u8edf\u9ad4\u53ef\u4ee5\u5354\u52a9\u5f8c\u7e8c\u7dad\u8b77\u3002\u9075\u5faa\u4ee5\u4e0b\u908f\u8f2f\u6b65\u9a5f\uff0c\u5373\u53ef\u5efa\u7acb\u6709\u610f\u7fa9\u7684\u5716\u8868\u3002<\/p>\n<h3>\u6b65\u9a5f 1\uff1a\u754c\u5b9a\u7bc4\u570d<\/h3>\n<p>\u5b9a\u7fa9\u7cfb\u7d71\u7684\u908a\u754c\u3002\u7cfb\u7d71\u5167\u90e8\u662f\u4ec0\u9ebc\uff0c\u5916\u90e8\u53c8\u662f\u4ec0\u9ebc\uff1f\u9019\u5c07\u6c7a\u5b9a\u54ea\u4e9b\u5be6\u9ad4\u662f\u5916\u90e8\u7684\uff0c\u54ea\u4e9b\u6d41\u7a0b\u662f\u5167\u90e8\u7684\u3002\u5982\u679c\u4e00\u500b\u6d41\u7a0b\u4f4d\u65bc\u7cfb\u7d71\u908a\u754c\u4e4b\u5916\uff0c\u5247\u5b83\u5c31\u662f\u5916\u90e8\u5be6\u9ad4\u3002<\/p>\n<h3>\u6b65\u9a5f 2\uff1a\u7e6a\u88fd\u4e0a\u4e0b\u6587\u5716<\/h3>\n<p>\u5f9e\u6574\u9ad4\u8996\u89d2\u958b\u59cb\u3002\u5c07\u7cfb\u7d71\u8996\u70ba\u4e00\u500b\u55ae\u4e00\u7684\u5713\u6ce1\u3002\u7e6a\u88fd\u8207\u5176\u4e92\u52d5\u7684\u5916\u90e8\u5be6\u9ad4\uff0c\u4e26\u756b\u51fa\u5b83\u5011\u4e4b\u9593\u7684\u4e3b\u8981\u8cc7\u6599\u6d41\u3002\u9019\u80fd\u78ba\u4fdd\u4f60\u5728\u6df1\u5165\u7d30\u7bc0\u4e4b\u524d\uff0c\u5df2\u6e05\u695a\u638c\u63e1\u9ad8\u968e\u7684\u8f38\u5165\u8207\u8f38\u51fa\u3002<\/p>\n<h3>\u6b65\u9a5f 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