{"id":1831,"date":"2026-03-27T00:21:24","date_gmt":"2026-03-27T00:21:24","guid":{"rendered":"https:\/\/www.tech-posts.com\/cn\/level-0-1-2-data-flow-diagrams-guide\/"},"modified":"2026-03-27T00:21:24","modified_gmt":"2026-03-27T00:21:24","slug":"level-0-1-2-data-flow-diagrams-guide","status":"publish","type":"post","link":"https:\/\/www.tech-posts.com\/cn\/level-0-1-2-data-flow-diagrams-guide\/","title":{"rendered":"0\u7ea7\u30011\u7ea7\u548c2\u7ea7\u6570\u636e\u6d41\u56fe\uff1a\u4f55\u65f6\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u6bcf\u4e00\u7ea7"},"content":{"rendered":"<p>\u7406\u89e3\u4fe1\u606f\u5728\u7cfb\u7edf\u4e2d\u5982\u4f55\u6d41\u52a8\uff0c\u5bf9\u4e8e\u6784\u5efa\u7a33\u5065\u7684\u8f6f\u4ef6\u548c\u9ad8\u6548\u7684\u4e1a\u52a1\u6d41\u7a0b\u81f3\u5173\u91cd\u8981\u3002\u6570\u636e\u6d41\u56fe\uff08DFD\uff09\u63d0\u4f9b\u4e86\u8fd9\u79cd\u6d41\u52a8\u7684\u53ef\u89c6\u5316\u8868\u793a\u3002\u5b83\u4eec\u63cf\u7ed8\u4e86\u6570\u636e\u4ece\u5916\u90e8\u6765\u6e90\u5230\u5185\u90e8\u5904\u7406\u8fc7\u7a0b\u7684\u6d41\u52a8\uff0c\u5c55\u793a\u4e86\u6570\u636e\u7684\u5b58\u50a8\u4f4d\u7f6e\u4ee5\u53ca\u5176\u8f6c\u6362\u65b9\u5f0f\u3002\u7136\u800c\uff0c\u7ed8\u5236\u5355\u4e00\u56fe\u8868\u5f88\u5c11\u80fd\u6355\u6349\u5230\u73b0\u4ee3\u7cfb\u7edf\u7684\u590d\u6742\u6027\u3002\u8fd9\u6b63\u662f0\u7ea7\u30011\u7ea7\u548c2\u7ea7\u6570\u636e\u6d41\u56fe\u5c42\u7ea7\u7ed3\u6784\u53d8\u5f97\u81f3\u5173\u91cd\u8981\u7684\u539f\u56e0\u3002<\/p>\n<p>\u5728\u6b63\u786e\u7684\u65f6\u95f4\u9009\u62e9\u5408\u9002\u7684\u7ec6\u8282\u5c42\u6b21\uff0c\u53ef\u4ee5\u9632\u6b62\u5728\u9700\u6c42\u6536\u96c6\u548c\u7cfb\u7edf\u8bbe\u8ba1\u8fc7\u7a0b\u4e2d\u4ea7\u751f\u6df7\u6dc6\u3002\u672c\u6307\u5357\u63a2\u8ba8\u4e86\u6bcf\u4e00\u7ea7\u7684\u5177\u4f53\u5e94\u7528\u3001\u7ec4\u6210\u90e8\u5206\u548c\u89c4\u5219\u3002\u6211\u4eec\u5c06\u7814\u7a76\u4f55\u65f6\u505c\u6b62\u5bf9\u8fc7\u7a0b\u8fdb\u884c\u5206\u89e3\uff0c\u4ee5\u53ca\u5982\u4f55\u5728\u6587\u6863\u4e2d\u4fdd\u6301\u4e00\u81f4\u6027\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Educational infographic illustrating the three-tier hierarchy of Data Flow Diagrams: Level 0 Context Diagram showing system boundaries with external entities, Level 1 High-Level Process Map displaying 5-9 major processes with data stores, and Level 2 Detailed Process View breaking down specific functions with sub-processes and detailed data flows, designed with clean flat style, pastel colors, and rounded shapes for student-friendly learning\" decoding=\"async\" src=\"https:\/\/www.tech-posts.com\/wp-content\/uploads\/2026\/03\/dfd-levels-hierarchy-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83d\udd0d 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\u793a\u4f8b\u573a\u666f<\/h3>\n<p>\u7ee7\u7eed\u4ee5\u56fe\u4e66\u9986\u7cfb\u7edf\u4e3a\u4f8b\uff0c\u7b2c1\u7ea7\u56fe\u5c06\u201c\u56fe\u4e66\u9986\u7cfb\u7edf\u201d\u5206\u89e3\u4e3a\u201c\u6ce8\u518c\u4f1a\u5458\u201d\u3001\u201c\u501f\u4e66\u201d\u3001\u201c\u5904\u7406\u7f5a\u6b3e\u201d\u548c\u201c\u7ba1\u7406\u5e93\u5b58\u201d\u3002\u6570\u636e\u5b58\u50a8\u53ef\u80fd\u5305\u62ec\u201c\u4f1a\u5458\u6570\u636e\u5e93\u201d\u548c\u201c\u56fe\u4e66\u76ee\u5f55\u201d\u30020\u7ea7\u4e2d\u7684\u201c\u501f\u4e66\u201d\u6d41\u7a0b\u5728\u7b2c1\u7ea7\u4e2d\u5206\u89e3\u4e3a\u4e0e\u201c\u4f1a\u5458\u6570\u636e\u5e93\u201d\u548c\u201c\u56fe\u4e66\u76ee\u5f55\u201d\u4ea4\u4e92\u7684\u6d41\u7a0b\u3002<\/p>\n<p>\u8fd9\u4e00\u5c42\u7ea7\u56de\u7b54\u7684\u95ee\u9898\u662f\uff1a<strong>\u201c\u4e3b\u8981\u529f\u80fd\u662f\u4ec0\u4e48\uff0c\u6570\u636e\u5b58\u50a8\u5728\u54ea\u91cc\uff1f\u201d<\/strong><\/p>\n<h2>\ud83d\udd2c \u7b2c2\u7ea7\uff1a\u8be6\u7ec6\u8fc7\u7a0b\u89c6\u56fe \ud83d\udd2c<\/h2>\n<p>\u7b2c2\u7ea7DFD\u6df1\u5165\u63a2\u8ba8\u7b2c1\u7ea7\u4e2d\u8bc6\u522b\u51fa\u7684\u7279\u5b9a\u8fc7\u7a0b\u3002\u5355\u4e2a\u7b2c1\u7ea7\u8fc7\u7a0b\u53ef\u80fd\u8fc7\u4e8e\u590d\u6742\uff0c\u96be\u4ee5\u5b8c\u5168\u7406\u89e3\uff0c\u56e0\u6b64\u9700\u8981\u8fdb\u4e00\u6b65\u5206\u89e3\u3002\u5e76\u975e\u6bcf\u4e2a\u8fc7\u7a0b\u90fd\u9700\u8981\u7b2c2\u7ea7\u56fe\uff1b\u53ea\u6709\u90a3\u4e9b\u9700\u8981\u8be6\u7ec6\u8bf4\u660e\u7684\u8fc7\u7a0b\u624d\u9700\u8981\u3002<\/p>\n<h3>\ud83c\udfaf \u4f55\u65f6\u4f7f\u7528\u7b2c2\u7ea7<\/h3>\n<ul>\n<li><strong>\u8be6\u7ec6\u89c4\u8303\uff1a<\/strong> \u5728\u4e3a\u5f00\u53d1\u4eba\u5458\u7f16\u5199\u6280\u672f\u9700\u6c42\u65f6\u4f7f\u7528\u3002<\/li>\n<li><strong>\u590d\u6742\u903b\u8f91\uff1a<\/strong> \u6d89\u53ca\u591a\u4e2a\u51b3\u7b56\u70b9\u6216\u8ba1\u7b97\u7684\u6d41\u7a0b\u3002<\/li>\n<li><strong>\u9057\u7559\u7cfb\u7edf\u73b0\u4ee3\u5316\uff1a<\/strong> \u5c06\u73b0\u6709\u590d\u6742\u5de5\u4f5c\u6d41\u7a0b\u6620\u5c04\u5230\u65b0\u7cfb\u7edf\u3002<\/li>\n<\/ul>\n<h3>\u2699\ufe0f \u5173\u952e\u7ec4\u4ef6<\/h3>\n<ul>\n<li><strong>\u5b50\u6d41\u7a0b\uff1a<\/strong> Level 1 \u6d41\u7a0b\u7684\u5206\u89e3\u3002\u4f8b\u5982\uff0c\u201c\u501f\u4e66\u201d\u4f1a\u5206\u89e3\u4e3a\u201c\u9a8c\u8bc1\u4f1a\u5458\u8d44\u683c\u201d\u3001\u201c\u66f4\u65b0\u5e93\u5b58\u201d\u548c\u201c\u751f\u6210\u6536\u636e\u201d\u3002\n<ul>\n<li> \u9650\u5236\u5b50\u6d41\u7a0b\u7684\u6570\u91cf\uff0c\u4ee5\u907f\u514d\u6742\u4e71\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong> \u8f93\u5165\/\u8f93\u51fa\u8be6\u60c5\uff1a<\/strong> \u660e\u786e\u5c55\u793a\u8fd9\u4e9b\u5b50\u6d41\u7a0b\u4e4b\u95f4\u4f20\u9012\u7684\u6570\u636e\u5143\u7d20\u3002<\/li>\n<li><strong> \u63a7\u5236\u903b\u8f91\uff1a<\/strong> \u5c3d\u7ba1\u6570\u636e\u6d41\u56fe\uff08DFD\uff09\u4e0d\u5c55\u793a\u50cf\u4ee3\u7801\u4e00\u6837\u7684\u903b\u8f91\uff0c\u4f46 Level 2 \u901a\u5e38\u4f1a\u6697\u793a\u51b3\u7b56\u70b9\uff08\u4f8b\u5982\uff0c\u201c\u5982\u679c\u4f1a\u5458\u6709\u6548\uff0c\u5219\u7ee7\u7eed\u201d\uff09\u3002<\/li>\n<\/ul>\n<h3>\ud83d\udcdd \u793a\u4f8b\u573a\u666f<\/h3>\n<p> \u5728\u56fe\u4e66\u9986\u793a\u4f8b\u4e2d\uff0cLevel 1 \u7684\u201c\u5904\u7406\u7f5a\u6b3e\u201d\u6d41\u7a0b\u88ab\u8fdb\u4e00\u6b65\u5206\u89e3\u3002\u5b83\u53ef\u80fd\u5305\u62ec\u201c\u8ba1\u7b97\u903e\u671f\u5929\u6570\u201d\u3001\u201c\u5e94\u7528\u8d39\u7387\u201d\u548c\u201c\u66f4\u65b0\u8d26\u6237\u4f59\u989d\u201d\u3002\u6b64\u5c42\u7ea7\u786e\u4fdd\u7f5a\u6b3e\u8ba1\u7b97\u903b\u8f91\u6e05\u6670\uff0c\u5e76\u4e0e\u4e1a\u52a1\u89c4\u5219\u4fdd\u6301\u4e00\u81f4\u3002<\/p>\n<p>\u6b64\u5c42\u7ea7\u56de\u7b54\u7684\u95ee\u9898\u662f\uff1a<strong>\u201c\u8fd9\u4e2a\u7279\u5b9a\u529f\u80fd\u7a76\u7adf\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff1f\u201d<\/strong><\/p>\n<h2>\ud83d\udcca \u6570\u636e\u6d41\u56fe\u5c42\u7ea7\u5bf9\u6bd4<\/h2>\n<table border=\"1\" cellpadding=\"10\" cellspacing=\"0\">\n<thead>\n<tr>\n<th>\u7279\u6027<\/th>\n<th>Level 0\uff08\u4e0a\u4e0b\u6587\uff09<\/th>\n<th>Level 1\uff08\u9ad8\u5c42\u7ea7\uff09<\/th>\n<th>Level 2\uff08\u8be6\u7ec6\u7ea7\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u8303\u56f4<\/strong><\/td>\n<td>\u6574\u4e2a\u7cfb\u7edf<\/td>\n<td>\u4e3b\u8981\u5b50\u7cfb\u7edf<\/td>\n<td>\u7279\u5b9a\u6d41\u7a0b<\/td>\n<\/tr>\n<tr>\n<td><strong>\u6d41\u7a0b\u6570\u91cf<\/strong><\/td>\n<td>1<\/td>\n<td>5 \u5230 9 \u4e2a<\/td>\n<td>\u53d8\u91cf\uff08\u6df1\u5165\u63a2\u8ba8\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>\u6570\u636e\u5b58\u50a8<\/strong><\/td>\n<td>\u65e0<\/td>\n<td>\u4e3b\u8981\u5b58\u50a8<\/td>\n<td>\u8be6\u7ec6\u5b58\u50a8<\/td>\n<\/tr>\n<tr>\n<td><strong>\u53d7\u4f17<\/strong><\/td>\n<td>\u5229\u76ca\u76f8\u5173\u8005\u3001\u9ad8\u7ba1<\/td>\n<td>\u67b6\u6784\u5e08\u3001\u7ba1\u7406\u8005<\/td>\n<td>\u5f00\u53d1\u8005\u3001\u5206\u6790\u5e08<\/td>\n<\/tr>\n<tr>\n<td><strong>\u65f6\u95f4<\/strong><\/td>\n<td>\u9700\u6c42\u9636\u6bb5<\/td>\n<td>\u8bbe\u8ba1\u9636\u6bb5<\/td>\n<td>\u5b9e\u65bd\u9636\u6bb5<\/td>\n<\/tr>\n<tr>\n<td><strong>\u91cd\u70b9<\/strong><\/td>\n<td>\u8fb9\u754c<\/td>\n<td>\u529f\u80fd<\/td>\n<td>\u903b\u8f91\u4e0e\u6570\u636e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\ud83d\udee0\ufe0f DFD\u5efa\u6a21\u7684\u6700\u4f73\u5b9e\u8df5<\/h2>\n<p>\u521b\u5efa\u51c6\u786e\u7684\u56fe\u8868\u9700\u8981\u7eaa\u5f8b\u3002\u9075\u5faa\u7279\u5b9a\u89c4\u5219\u53ef\u786e\u4fdd\u60a8\u7684\u6587\u6863\u5728\u6574\u4e2a\u9879\u76ee\u751f\u547d\u5468\u671f\u4e2d\u4fdd\u6301\u6709\u7528\u3002<\/p>\n<h3>1. \u4fdd\u6301\u5e73\u8861<\/h3>\n<p>\u5f53\u4f60\u5c06\u4e00\u4e2a\u8fc7\u7a0b\u4ece0\u7ea7\u5206\u89e3\u52301\u7ea7\u65f6\uff0c\u8f93\u5165\u548c\u8f93\u51fa\u5fc5\u987b\u4e00\u81f4\u3002\u5982\u679c0\u7ea7\u663e\u793a\u201c\u7528\u6237\u767b\u5f55\u8bf7\u6c42\u201d\u8fdb\u5165\u7cfb\u7edf\uff0c1\u7ea7\u5fc5\u987b\u663e\u793a\u76f8\u540c\u7684\u6570\u636e\u8fdb\u5165\u201c\u8ba4\u8bc1\u8fc7\u7a0b\u201d\u3002\u5982\u679c\u6570\u636e\u51ed\u7a7a\u6d88\u5931\u6216\u51fa\u73b0\uff0c\u8be5\u56fe\u8868\u5c31\u662f\u65e0\u6548\u7684\u3002<\/p>\n<h3>2. \u547d\u540d\u89c4\u8303<\/h3>\n<ul>\n<li><strong>\u8fc7\u7a0b\uff1a<\/strong> \u4f7f\u7528\u52a8\u8bcd-\u540d\u8bcd\u7ed3\u6784\uff08\u4f8b\u5982\uff0c\u201c\u9a8c\u8bc1\u8ba2\u5355\u201d\uff0c\u800c\u4e0d\u662f\u201c\u8ba2\u5355\u9a8c\u8bc1\u201d\uff09\u3002\u8fd9\u5f3a\u8c03\u4e86\u52a8\u4f5c\u3002<\/li>\n<li><strong>\u6570\u636e\u6d41\uff1a<\/strong> \u4f7f\u7528\u540d\u8bcd\u77ed\u8bed\uff08\u4f8b\u5982\uff0c\u201c\u5ba2\u6237\u6570\u636e\u201d\u3001\u201c\u53d1\u7968\u201d\uff09\u3002<\/li>\n<li><strong>\u5b9e\u4f53\uff1a<\/strong> \u4f7f\u7528\u5355\u6570\u540d\u8bcd\uff08\u4f8b\u5982\uff0c\u201c\u5ba2\u6237\u201d\uff0c\u800c\u4e0d\u662f\u201c\u5ba2\u6237\u4eec\u201d\uff09\u3002<\/li>\n<\/ul>\n<h3>3. \u907f\u514d\u6570\u636e\u6df7\u4e71<\/h3>\n<p>\u4e0d\u8981\u8fc7\u5ea6\u7ed8\u5236\u76f8\u4e92\u4ea4\u53c9\u7684\u6570\u636e\u6d41\u3002\u5982\u679c\u56fe\u8868\u53d8\u6210\u4e00\u5f20\u7ebf\u7684\u7f51\uff0c\u5f88\u53ef\u80fd\u8fc7\u4e8e\u590d\u6742\u3002\u8003\u8651\u5c061\u7ea7\u8fc7\u7a0b\u62c6\u5206\u4e3a\u591a\u4e2a\u72ec\u7acb\u7684\u56fe\u8868\u3002<\/p>\n<h3>4. \u65e0\u4ea4\u53c9\u901a\u4fe1<\/h3>\n<p>\u5916\u90e8\u5b9e\u4f53\u4e4b\u95f4\u4e0d\u5e94\u76f4\u63a5\u901a\u4fe1\u3002\u6240\u6709\u901a\u4fe1\u5fc5\u987b\u901a\u8fc7\u7cfb\u7edf\u8fdb\u7a0b\u8fdb\u884c\u3002\u5982\u679c\u201c\u4ed3\u5e93\u201d\u5411\u201c\u8ba1\u8d39\u7cfb\u7edf\u201d\u53d1\u9001\u6570\u636e\uff0c\u5fc5\u987b\u7ecf\u8fc7\u201c\u8ba2\u5355\u5904\u7406\u201d\u8fdb\u7a0b\u3002<\/p>\n<h3>5. \u9650\u5236\u6570\u636e\u5b58\u50a8<\/h3>\n<p>\u8fc7\u591a\u7684\u6570\u636e\u5b58\u50a8\u4f1a\u8ba9\u8bfb\u8005\u611f\u5230\u56f0\u60d1\u3002\u53ea\u5305\u542b\u5f53\u524d\u8be6\u7ec6\u7a0b\u5ea6\u6240\u5fc5\u9700\u7684\u6570\u636e\u5b58\u50a8\u3002\u5982\u679c\u67d0\u4e2a\u5b58\u50a8\u4ec5\u5728\u7b2c2\u5c42\u4f7f\u7528\uff0c\u53ef\u80fd\u5728\u7b2c1\u5c42\u65e0\u9700\u51fa\u73b0\u3002<\/p>\n<h2>\ud83d\udeab \u5e94\u907f\u514d\u7684\u5e38\u89c1\u9677\u9631<\/h2>\n<p>\u5373\u4f7f\u662f\u7ecf\u9a8c\u4e30\u5bcc\u7684\u5206\u6790\u5e08\u4e5f\u4f1a\u72af\u9519\u3002\u53ca\u65e9\u8bc6\u522b\u8fd9\u4e9b\u9519\u8bef\u53ef\u4ee5\u8282\u7701\u8bc4\u5ba1\u65f6\u95f4\u3002<\/p>\n<ul>\n<li><strong>\u9ed1\u6d1e\uff1a<\/strong> \u4e00\u4e2a\u6ca1\u6709\u8f93\u51fa\u7684\u8fdb\u7a0b\u3002\u8fd9\u610f\u5473\u7740\u6570\u636e\u6b63\u5728\u6d88\u5931\uff0c\u8fd9\u5728\u6b63\u5e38\u8fd0\u884c\u7684\u7cfb\u7edf\u4e2d\u5728\u903b\u8f91\u4e0a\u662f\u4e0d\u53ef\u80fd\u7684\u3002<\/li>\n<li><strong>\u5947\u8ff9\uff1a<\/strong> \u4e00\u4e2a\u6ca1\u6709\u8f93\u5165\u7684\u8fdb\u7a0b\u3002\u6570\u636e\u4e0d\u53ef\u80fd\u51ed\u7a7a\u4ea7\u751f\u3002<\/li>\n<li><strong>\u7070\u6d1e\uff1a<\/strong> \u4e00\u4e2a\u6709\u8f93\u5165\u4f46\u8f93\u51fa\u4e0e\u8f93\u5165\u9884\u671f\u4e0d\u7b26\u7684\u8fdb\u7a0b\u3002\u8fd9\u901a\u5e38\u8868\u660e\u5b58\u5728\u7f3a\u5931\u7684\u903b\u8f91\u3002<\/li>\n<li><strong>\u8fc7\u65e9\u5730\u52a0\u5165\u8fc7\u591a\u7ec6\u8282\uff1a<\/strong> \u5728\u7b2c1\u5c42\u672a\u83b7\u6279\u51c6\u524d\u7ed8\u5236\u7b2c2\u5c42\u56fe\u4f1a\u5bfc\u81f4\u8fd4\u5de5\u3002\u5e94\u575a\u6301\u5c42\u7ea7\u7ed3\u6784\u3002<\/li>\n<li><strong>\u5ffd\u7565\u6570\u636e\u5b58\u50a8\uff1a<\/strong> 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