{"id":5936,"date":"2022-01-26T01:28:21","date_gmt":"2022-01-26T01:28:21","guid":{"rendered":"https:\/\/www.cybermedian.com\/cn\/?p=5936"},"modified":"2026-04-20T09:13:21","modified_gmt":"2026-04-20T09:13:21","slug":"%e4%bb%80%e4%b9%88%e6%98%af%e6%95%b0%e6%8d%ae%e6%b5%81%e5%9b%be%ef%bc%8c%e4%b8%ba%e4%bb%80%e4%b9%88%e5%ae%83%e4%bb%8d%e7%84%b6%e5%af%b9%e8%bd%af%e4%bb%b6%e5%bc%80%e5%8f%91%e6%9c%89%e7%94%a8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/cn\/what-is-data-flow-diagram-why-it-is-still-useful-for-software-development\/","title":{"rendered":"\u4ec0\u4e48\u662f\u6570\u636e\u6d41\u56fe\uff0c\u4e3a\u4ec0\u4e48\u5b83\u4ecd\u7136\u5bf9\u8f6f\u4ef6\u5f00\u53d1\u6709\u7528\uff1f"},"content":{"rendered":"<section class=\"section section--body section--first\">\n<div class=\"section-content\">\n<div class=\"section-inner sectionLayout--insetColumn\">\n<p id=\"dbcd\" class=\"graf graf--p graf-after--h3\"><a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\">\u6570\u636e\u6d41\u6a21\u578b<\/a>\u00a0\u662f\u663e\u793a\u7cfb\u7edf\u5982\u4f55\u5904\u7406\u6570\u636e\u7684\u76f4\u89c2\u65b9\u5f0f\u3002\u00a0\u5728\u5206\u6790\u7ea7\u522b\uff0c\u5b83\u4eec\u5e94\u8be5\u7528\u4e8e\u5bf9\u73b0\u6709\u7cfb\u7edf\u4e2d\u5904\u7406\u6570\u636e\u7684\u65b9\u5f0f\u8fdb\u884c\u5efa\u6a21\u3002<\/p>\n<p id=\"9b9e\" class=\"graf graf--p graf-after--p\"><a class=\"markup--anchor markup--p-anchor\" href=\"http:\/\/dfd%20using%20yourdon%20and%20demarco%20notation\/\" target=\"_blank\" rel=\"noopener\" data-href=\"http:\/\/DFD Using Yourdon and DeMarco Notation\">DeMarco \u7684\u300a\u7ed3\u6784\u5316\u7cfb\u7edf\u5206\u6790\u300b\u4e00\u4e66<\/a>\u51fa\u7248\u540e\u00a0\uff0c\u6570\u636e\u6d41\u6a21\u578b\u5728\u5206\u6790\u4e2d\u7684\u5e94\u7528\u8d8a\u6765\u8d8a\u5e7f\u6cdb\u3002\u5b83\u4eec\u662f\u4ece\u8fd9\u9879\u5de5\u4f5c\u5f00\u53d1\u7684\u7ed3\u6784\u5316\u65b9\u6cd5\u7684\u56fa\u6709\u90e8\u5206\u3002\u8fd9\u4e9b\u6a21\u578b\u4e2d\u4f7f\u7528\u7684\u7b26\u53f7\u4ee3\u8868\u51fd\u6570\u5904\u7406\uff08\u5706\u89d2\u77e9\u5f62\uff09\u3001\u6570\u636e\u5b58\u50a8\uff08\u77e9\u5f62\uff09\u548c\u51fd\u6570\u4e4b\u95f4\u7684\u6570\u636e\u79fb\u52a8\uff08\u6807\u8bb0\u7bad\u5934\uff09\u3002<\/p>\n<h3 id=\"5137\" class=\"graf graf--h3 graf-after--p\"><span id=\"Why_DFD_still_useful_for_software_development\">\u4e3a\u4ec0\u4e48 DFD \u4ecd\u7136\u5bf9\u8f6f\u4ef6\u5f00\u53d1\u6709\u7528\uff1f<\/span><\/h3>\n<p id=\"5d71\" class=\"graf graf--p graf-after--h3\">\u5c3d\u7ba1\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/en.wikipedia.org\/wiki\/Data-flow_diagram\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/en.wikipedia.org\/wiki\/Data-flow_diagram\">\u9762\u5411\u6570\u636e\u6d41\u7684\u5efa\u6a21<\/a>\u00a0\u88ab\u4e00\u4e9b\u8f6f\u4ef6\u5de5\u7a0b\u5e08\u8ba4\u4e3a\u662f\u4e00\u79cd\u8fc7\u65f6\u7684\u6280\u672f\uff0c\u4f46\u5b83\u4ecd\u7136\u662f\u6700\u5e7f\u6cdb\u4f7f\u7528\u7684\u9700\u6c42\u5206\u6790\u7b26\u53f7\u4e4b\u4e00\u3002\u5c3d\u7ba1\u6570\u636e\u6d41\u56fe (DFD) \u4e0d\u662f UML \u7684\u6b63\u5f0f\u90e8\u5206\uff0c\u4f46\u5b83\u4eec\u53ef\u7528\u4e8e\u8865\u5145 UML \u56fe\u5e76\u63d0\u4f9b\u5bf9\u7cfb\u7edf\u9700\u6c42\u548c\u6d41\u7a0b\u7684\u989d\u5916\u6d1e\u5bdf\u3002<\/p>\n<p id=\"6c71\" class=\"graf graf--p graf-after--p\">\u6570\u636e\u6d41\u6a21\u578b\u5f88\u6709\u4ef7\u503c\uff0c\u56e0\u4e3a\u8ddf\u8e2a\u548c\u8bb0\u5f55\u4e0e\u7279\u5b9a\u6d41\u7a0b\u76f8\u5173\u7684\u6570\u636e\u5982\u4f55\u5728\u7cfb\u7edf\u4e2d\u79fb\u52a8\u6709\u52a9\u4e8e\u5206\u6790\u5e08\u4e86\u89e3\u6b63\u5728\u53d1\u751f\u7684\u4e8b\u60c5\u3002\u6570\u636e\u6d41\u56fe\u7684\u4f18\u52bf\u5728\u4e8e\uff0c\u4e0e\u5176\u4ed6\u4e00\u4e9b\u5efa\u6a21\u7b26\u53f7\u4e0d\u540c\uff0c\u5b83\u4eec\u7b80\u5355\u76f4\u89c2\u3002\u901a\u5e38\u53ef\u4ee5\u5411\u53ef\u80fd\u53c2\u4e0e\u9700\u6c42\u5206\u6790\u548c\u9a8c\u8bc1\u7684\u6f5c\u5728\u7cfb\u7edf\u7528\u6237\u89e3\u91ca\u5b83\u4eec\u3002<\/p>\n<h4 id=\"4d4c\" class=\"graf graf--h4 graf-after--p\"><span id=\"Why_DFD\">\u4e3a\u4ec0\u4e48\u9009\u62e9 DFD\uff1f<\/span><\/h4>\n<p id=\"248b\" class=\"graf graf--p graf-after--h4\">DFD \u4ee5\u56fe\u5f62\u65b9\u5f0f\u8868\u793a\u5728\u7cfb\u7edf\u53ca\u5176\u73af\u5883\u4e4b\u95f4\u4ee5\u53ca\u7cfb\u7edf\u7ec4\u4ef6\u4e4b\u95f4\u6355\u83b7\u3001\u64cd\u4f5c\u3001\u5b58\u50a8\u548c\u5206\u53d1\u6570\u636e\u7684\u529f\u80fd\u6216\u8fc7\u7a0b\u3002\u89c6\u89c9\u8868\u793a\u4f7f\u5176\u6210\u4e3a\u7528\u6237\u548c\u7cfb\u7edf\u8bbe\u8ba1\u5e08\u4e4b\u95f4\u7684\u826f\u597d\u6c9f\u901a\u5de5\u5177\u3002DFD \u7684\u7ed3\u6784\u5141\u8bb8\u4ece\u5e7f\u6cdb\u7684\u6982\u8ff0\u5f00\u59cb\u5e76\u5c06\u5176\u6269\u5c55\u5230\u8be6\u7ec6\u56fe\u8868\u7684\u5c42\u6b21\u7ed3\u6784\u3002\u7531\u4e8e\u4ee5\u4e0b\u539f\u56e0\uff0c\u7ecf\u5e38\u4f7f\u7528 DFD\uff1a<\/p>\n<ul class=\"postList\">\n<li id=\"4521\" class=\"graf graf--li graf-after--p\">\u7cfb\u7edf\u903b\u8f91\u4fe1\u606f\u6d41<\/li>\n<li id=\"720b\" class=\"graf graf--li graf-after--li\">\u786e\u5b9a\u7269\u7406\u7cfb\u7edf\u6784\u5efa\u8981\u6c42<\/li>\n<li id=\"f707\" class=\"graf graf--li graf-after--li\">\u7b26\u53f7\u7684\u7b80\u5355\u6027<\/li>\n<li id=\"c92f\" class=\"graf graf--li graf-after--li\">\u5efa\u7acb\u624b\u52a8\u548c\u81ea\u52a8\u5316\u7cfb\u7edf\u8981\u6c42<\/li>\n<\/ul>\n<h3 id=\"bd2d\" class=\"graf graf--h3 graf-after--li\"><span id=\"DFD_is_a_Top-Down_Decomposition_Process\">DFD \u662f\u4e00\u4e2a\u81ea\u4e0a\u800c\u4e0b\u7684\u5206\u89e3\u8fc7\u7a0b<\/span><\/h3>\n<p id=\"6cf8\" class=\"graf graf--p graf-after--h3\">\u6570\u636e\u6d41\u5efa\u6a21\u662f\u4e00\u4e2a\u201c\u81ea\u4e0a\u800c\u4e0b\u201d\u7684\u8fc7\u7a0b\u3002\u9996\u5148\u5206\u6790\u6574\u4e2a\u91c7\u8d2d\u6d41\u7a0b\u3002\u7136\u540e\u4ee5\u81ea\u4e0a\u800c\u4e0b\u7684\u5206\u89e3\u65b9\u5f0f\u5206\u6790\u5b50\u8fc7\u7a0b\u3002<\/p>\n<p id=\"b22f\" class=\"graf graf--p graf-after--p\">DFD \u53ef\u7528\u4e8e\u5bf9\u4efb\u4f55\u62bd\u8c61\u7ea7\u522b\u7684\u7cfb\u7edf\u6216\u8f6f\u4ef6\u8fdb\u884c\u5efa\u6a21\u3002\u5982\u524d\u6240\u8ff0\uff0cDFD \u53ef\u4ee5\u5206\u4e3a\u4ee3\u8868\u4e0d\u65ad\u589e\u52a0\u7684\u4fe1\u606f\u6d41\u548c\u529f\u80fd\u7ec6\u8282\u7684\u7ea7\u522b\u3002DFD \u4e2d\u7684\u7ea7\u522b\u6570\u4e3a 0\u30011\u30012 \u6216\u66f4\u9ad8\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u770b\u5230\u6570\u636e\u6d41\u56fe\u4e2d\u7684\u4e09\u4e2a\u4e3b\u8981\u7ea7\u522b\uff0c\u5373 0 \u7ea7 DFD\u30011 \u7ea7 DFD \u548c 2 \u7ea7 DFD\u3002<\/p>\n<figure id=\"d663\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0DTnOV6N4nnYaG-1l.png\" data-image-id=\"0*DTnOV6N4nnYaG-1l.png\" data-width=\"886\" data-height=\"577\" data-is-featured=\"true\" \/><figcaption class=\"imageCaption\">DFD \u81ea\u9876\u5411\u4e0b\u5206\u89e3\u8fc7\u7a0b<\/figcaption><\/figure>\n<h4 id=\"e685\" class=\"graf graf--h4 graf-after--figure\"><span id=\"Context_Diagram_Levels_of_DFD\">\u4e0a\u4e0b\u6587\u56fe &#8211; DFD \u7684\u7ea7\u522b<\/span><\/h4>\n<p id=\"7108\" class=\"graf graf--p graf-after--h4\">\u4e0a\u4e0b\u6587\u56fe\uff08\u4e5f\u79f0\u4e3a0\u7ea7DFD\uff09\uff0c\u5b83\u5c06\u6574\u4e2a\u8f6f\u4ef6\u9700\u6c42\u8868\u793a\u4e3a\u4e00\u4e2a\u6c14\u6ce1\uff0c\u8f93\u5165\u548c\u8f93\u51fa\u6570\u636e\u7531\u8f93\u5165\u548c\u8f93\u51fa\u7bad\u5934\u8868\u793a\u3002<\/p>\n<p id=\"319a\" class=\"graf graf--p graf-after--p\">\u7136\u540e\u5c06\u8be5\u7cfb\u7edf\u5206\u89e3\u4e3a\u5177\u6709\u591a\u4e2a\u6c14\u6ce1\u7684 DFD\u3002\u7136\u540e\u5c06\u6bcf\u4e2a\u6c14\u6ce1\u6240\u4ee3\u8868\u7684\u7cfb\u7edf\u90e8\u5206\u5206\u89e3\u5e76\u8bb0\u5f55\u5230\u8d8a\u6765\u8d8a\u8be6\u7ec6\u7684\u6570\u636e\u6d41\u56fe\u4e2d\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u53ef\u4ee5\u5728\u5fc5\u8981\u7684\u5c42\u6b21\u4e0a\u91cd\u590d\uff0c\u76f4\u5230\u624b\u5934\u7684\u7a0b\u5e8f\u88ab\u5b8c\u5168\u7406\u89e3\u3002<\/p>\n<p id=\"c5c4\" class=\"graf graf--p graf-after--p\">\u5fc5\u987b\u4fdd\u6301\u7ea7\u522b\u4e4b\u95f4\u7684\u8f93\u5165\u548c\u8f93\u51fa\u6570\u91cf\uff0c\u8fd9\u4e00\u6982\u5ff5\u79f0\u4e3a DeMacro \u8c03\u5e73\u3002\u56e0\u6b64\uff0c\u5982\u679c\u6c14\u6ce1\u201cA\u201d\u6709\u4e24\u4e2a\u8f93\u5165 X1 \u548c X2 \u4ee5\u53ca\u4e00\u4e2a\u8f93\u51fa Y\uff0c\u90a3\u4e48\u4ee3\u8868\u4e0a\u5c42 DFD\u201cA\u201d\u7684\u5b50\u7ea7\u6570\u636e\u6d41\u56fe\u5e94\u8be5\u6b63\u597d\u6709\u4e24\u4e2a\u5916\u90e8\u8f93\u5165\u548c\u4e00\u4e2a\u5916\u90e8\u8f93\u51fa\u3002<\/p>\n<p id=\"a817\" class=\"graf graf--p graf-after--p\">\u5728 1 \u7ea7 DFD \u4e2d\uff0c\u4e0a\u4e0b\u6587\u56fe\u88ab\u5206\u89e3\u4e3a\u591a\u4e2a\u6d41\u7a0b\u3002\u5728\u8fd9\u4e00\u5c42\u4e2d\uff0c\u6211\u4eec\u7a81\u51fa\u4e86\u7cfb\u7edf\u7684\u4e3b\u8981\u529f\u80fd\uff0c\u5e76\u5c06 0 \u7ea7 DFD \u7684\u9ad8\u7ea7\u6d41\u7a0b\u8fdb\u4e00\u6b65\u5206\u89e3\u4e3a\u5b50\u6d41\u7a0b\uff0c\u4ee5\u8868\u793a\u5904\u7406\u6d3b\u52a8\u7684\u7ec6\u8282\u3002<\/p>\n<p id=\"5243\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\">\u4e0a\u4e0b\u6587\u56fe\uff080 \u7ea7 DFD\uff09\u200a<\/strong>\u00a0\u2014\u2014\u4e0a\u4e0b\u6587\u56fe DFD \u662f\u8868\u793a\u7cfb\u7edf\u6982\u89c8\u53ca\u5176\u4e0e\u201c\u4e16\u754c\u201d\u5176\u4ed6\u90e8\u5206\u4ea4\u4e92\u7684\u56fe\u8868\u3002<\/p>\n<p id=\"f289\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\">1 \u7ea7\u6570\u636e\u6d41\u56fe<\/strong>\u200a\u2014\u20141 \u7ea7 DFD \u901a\u8fc7\u663e\u793a\u6784\u6210\u6574\u4e2a\u7cfb\u7edf\u7684\u4e3b\u8981\u5b50\u6d41\u7a0b\u548c\u6570\u636e\u5b58\u50a8\uff0c\u63d0\u4f9b\u4e86\u6bd4\u4e0a\u4e0b\u6587\u56fe\u66f4\u8be6\u7ec6\u7684\u7cfb\u7edf\u89c6\u56fe\u3002<\/p>\n<p id=\"7f01\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\">2 \u7ea7\uff08\u6216\u66f4\u4f4e\uff09<\/strong>\u00a0\u200a\u2014\u2014\u6570\u636e\u6d41\u5efa\u6a21\u6280\u672f\u7684\u4e00\u4e2a\u4e3b\u8981\u4f18\u52bf\u662f\uff0c\u73b0\u5b9e\u4e16\u754c\u7cfb\u7edf\u7684\u8be6\u7ec6\u590d\u6742\u6027\u53ef\u4ee5\u901a\u8fc7\u4e00\u79cd\u79f0\u4e3a\u201c\u5206\u7ea7\u201d\u7684\u6280\u672f\u5728\u62bd\u8c61\u7ea7\u522b\u8fdb\u884c\u7ba1\u7406\u548c\u5efa\u6a21\u3002\u4efb\u4f55\u6570\u636e\u6d41\u56fe\u7684\u67d0\u4e9b\u5143\u7d20\u90fd\u53ef\u4ee5\u5728\u5c42\u6b21\u7ed3\u6784\u7684\u8f83\u4f4e\u7ea7\u522b\u5206\u89e3\uff08\u201c\u5206\u89e3\u201d\uff09\u4e3a\u66f4\u8be6\u7ec6\u7684\u6a21\u578b<\/p>\n<h3 id=\"8d01\" class=\"graf graf--h3 graf-after--p\"><span id=\"DFD_Levels_Example_Food_Ordering_System\">DFD \u7ea7\u522b &#8211; \u793a\u4f8b<strong class=\"markup--strong markup--h3-strong\"><em class=\"markup--em markup--h3-em\">&#8211; \u98df\u54c1\u8ba2\u8d2d\u7cfb\u7edf<\/em><\/strong><\/span><\/h3>\n<p id=\"7b50\" class=\"graf graf--p graf-after--h3\"><strong class=\"markup--strong markup--p-strong\">0\u7ea7<\/strong><\/p>\n<p id=\"e54b\" class=\"graf graf--p graf-after--p\">\u5b83\u4e5f\u88ab\u79f0\u4e3a\u00a0<strong class=\"markup--strong markup--p-strong\">\u4e0a\u4e0b\u6587\u56fe<\/strong>\u3002\u5b83\u88ab\u8bbe\u8ba1\u6210\u4e00\u4e2a\u62bd\u8c61\u89c6\u56fe\uff0c\u5c06\u7cfb\u7edf\u663e\u793a\u4e3a\u5355\u4e2a\u8fdb\u7a0b\u53ca\u5176\u4e0e\u5916\u90e8\u5b9e\u4f53\u7684\u5173\u7cfb\u3002<\/p>\n<ul class=\"postList\">\n<li id=\"3c49\" class=\"graf graf--li graf-after--p\">\u4e0a\u4e0b\u6587\u56fe\u5fc5\u987b\u9002\u5408\u4e00\u9875\u3002<\/li>\n<li id=\"d17a\" class=\"graf graf--li graf-after--li\">\u4e0a\u4e0b\u6587\u56fe\u4e2d\u7684\u8fdb\u7a0b\u540d\u79f0\u5e94\u8be5\u662f\u4fe1\u606f\u7cfb\u7edf\u7684\u540d\u79f0\u3002<\/li>\n<li id=\"be81\" class=\"graf graf--li graf-after--li\">\u4f8b\u5982\uff0c\u8bc4\u5206\u7cfb\u7edf\u3001\u8ba2\u5355\u5904\u7406\u7cfb\u7edf\u3001\u6ce8\u518c\u7cfb\u7edf\u3002<\/li>\n<\/ul>\n<figure id=\"94f8\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/1fgsircZo8sN8GJUaj3F7QA.png\" data-image-id=\"1*fgsircZo8sN8GJUaj3F7QA.png\" data-width=\"862\" data-height=\"296\" \/><figcaption class=\"imageCaption\"><em class=\"markup--em markup--figure-em\">\u98df\u54c1\u8ba2\u8d2d\u7cfb\u7edf \u2014 \u4e0a\u4e0b\u6587\u56fe \u2014 0 \u7ea7 DFD<\/em><\/figcaption><\/figure>\n<p id=\"1a04\" class=\"graf graf--p graf-after--figure\">\u5728 1 \u7ea7 DFD \u4e2d\uff0c\u4e0a\u4e0b\u6587\u56fe\u88ab\u5206\u89e3\u4e3a\u591a\u4e2a\u6d41\u7a0b\u3002\u5728\u8fd9\u4e00\u5c42\u4e2d\uff0c\u6211\u4eec\u7a81\u51fa\u4e86\u7cfb\u7edf\u7684\u4e3b\u8981\u529f\u80fd\uff0c\u5e76\u5c06 0 \u7ea7 DFD \u7684\u9ad8\u7ea7\u6d41\u7a0b\u8fdb\u4e00\u6b65\u5206\u89e3\u4e3a\u5b50\u6d41\u7a0b\uff0c\u4ee5\u8868\u793a\u5904\u7406\u6d3b\u52a8\u7684\u7ec6\u8282\u3002<\/p>\n<p id=\"901f\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\"><em class=\"markup--em markup--p-em\">\u7ea7\u522b 1 &#8211; \u98df\u54c1\u8ba2\u8d2d\u7cfb\u7edf<\/em><\/strong><\/p>\n<p id=\"2869\" class=\"graf graf--p graf-after--p\">\u5728 1 \u7ea7 DFD \u4e2d\uff0c\u4e0a\u4e0b\u6587\u56fe\u88ab\u5206\u89e3\u4e3a\u591a\u4e2a\u6d41\u7a0b\u3002\u5728\u8fd9\u4e00\u5c42\u4e2d\uff0c\u6211\u4eec\u7a81\u51fa\u4e86\u7cfb\u7edf\u7684\u4e3b\u8981\u529f\u80fd\uff0c\u5e76\u5c06 0 \u7ea7 DFD \u7684\u9ad8\u7ea7\u6d41\u7a0b\u8fdb\u4e00\u6b65\u5206\u89e3\u4e3a\u5b50\u6d41\u7a0b\uff0c\u4ee5\u8868\u793a\u5904\u7406\u6d3b\u52a8\u7684\u7ec6\u8282\u3002<\/p>\n<figure id=\"0e59\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/16dIMY1UE44SrDdFn-38jGQ.png\" data-image-id=\"1*6dIMY1UE44SrDdFn-38jGQ.png\" data-width=\"839\" data-height=\"467\" \/><figcaption class=\"imageCaption\">1 \u7ea7 DFD \u2014 \u98df\u54c1\u8ba2\u8d2d\u7cfb\u7edf\u793a\u4f8b<\/figcaption><\/figure>\n<p id=\"3fe7\" class=\"graf graf--p graf-after--figure\">\u5982\u679c\u4e00\u4e2a\u6d41\u7a0b\u5728\u51e0\u4e2a\u5916\u90e8\u5b9e\u4f53\u4e4b\u95f4\u6709\u5927\u91cf\u6570\u636e\u6d41\u94fe\u63a5\uff0c\u6211\u4eec\u53ef\u4ee5\u5148\u5c06\u8be5\u7279\u5b9a\u6d41\u7a0b\u548c\u5173\u8054\u7684\u5916\u90e8\u5b9e\u4f53\u63d0\u53d6\u5230\u4e00\u4e2a\u7c7b\u4f3c\u4e8e\u4e0a\u4e0b\u6587\u56fe\u7684\u5355\u72ec\u56fe\u8868\u4e2d\uff0c\u7136\u540e\u518d\u5c06\u6d41\u7a0b\u7ec6\u5316\u4e3a\u5355\u72ec\u7684 DFD \u7ea7\u522b\uff1b\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u60a8\u53ef\u4ee5\u66f4\u8f7b\u677e\u5730\u786e\u4fdd\u5b83\u4eec\u4e4b\u95f4\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<h3 id=\"5e02\" class=\"graf graf--h3 graf-after--p\"><span id=\"DFD_Symbols\">DFD \u7b26\u53f7<\/span><\/h3>\n<p id=\"96ef\" class=\"graf graf--p graf-after--h3\">\u6709\u00a0<strong class=\"markup--strong markup--p-strong\">\u56db\u4e2a\u57fa\u672c\u7b26\u53f7<\/strong>\u00a0\u7528\u4e8e\u8868\u793a\u6570\u636e\u6d41\u56fe\u3002<\/p>\n<h3 id=\"689c\" class=\"graf graf--h3 graf-after--p\"><span id=\"Process\">\u8fc7\u7a0b<\/span><\/h3>\n<p id=\"f695\" class=\"graf graf--p graf-after--h3\">\u4e00\u4e2a\u8fdb\u7a0b\u63a5\u6536\u8f93\u5165\u6570\u636e\u5e76\u4ea7\u751f\u5177\u6709\u4e0d\u540c\u5185\u5bb9\u6216\u5f62\u5f0f\u7684\u8f93\u51fa\u3002\u6d41\u7a0b\u53ef\u4ee5\u7b80\u5355\u5230\u6536\u96c6\u8f93\u5165\u6570\u636e\u5e76\u4fdd\u5b58\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u4e5f\u53ef\u4ee5\u590d\u6742\u5230\u751f\u6210\u5305\u542b\u897f\u5317\u5730\u533a\u6240\u6709\u96f6\u552e\u5e97\u6708\u9500\u552e\u989d\u7684\u62a5\u544a\u3002<\/p>\n<p id=\"d4c3\" class=\"graf graf--p graf-after--p\">\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709\u4e00\u4e2a\u540d\u79f0\u6765\u6807\u8bc6\u5b83\u6267\u884c\u7684\u529f\u80fd\u3002<\/p>\n<p id=\"32f6\" class=\"graf graf--p graf-after--p\">\u8be5\u540d\u79f0\u7531\u4e00\u4e2a\u52a8\u8bcd\u7ec4\u6210\uff0c\u540e\u8ddf\u4e00\u4e2a\u5355\u6570\u540d\u8bcd\u3002<\/p>\n<p id=\"9161\" class=\"graf graf--p graf-after--p\">\u4f8b\u5b50\uff1a<\/p>\n<ul class=\"postList\">\n<li id=\"2180\" class=\"graf graf--li graf-after--p\">\u7533\u8bf7\u4ed8\u6b3e<\/li>\n<li id=\"8377\" class=\"graf graf--li graf-after--li\">\u8ba1\u7b97\u4f63\u91d1<\/li>\n<li id=\"8e28\" class=\"graf graf--li graf-after--li\">\u9a8c\u8bc1\u8ba2\u5355<\/li>\n<\/ul>\n<h4 id=\"4463\" class=\"graf graf--h4 graf-after--li\"><span id=\"DFD_Notation\">DFD \u8868\u793a\u6cd5<\/span><\/h4>\n<ul class=\"postList\">\n<li id=\"b2b8\" class=\"graf graf--li graf-after--h4\">\u5706\u89d2\u77e9\u5f62\u4ee3\u8868\u4e00\u4e2a\u8fdb\u7a0b<\/li>\n<li id=\"084f\" class=\"graf graf--li graf-after--li\">\u8fdb\u7a0b\u88ab\u8d4b\u4e88 ID \u4ee5\u4fbf\u4e8e\u5f15\u7528<\/li>\n<\/ul>\n<figure id=\"11da\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0EDe7N518PkPxVVLo.png\" data-image-id=\"0*EDe7N518PkPxVVLo.png\" data-width=\"377\" data-height=\"71\" \/><\/figure>\n<h4 id=\"af8f\" class=\"graf graf--h4 graf-after--figure\"><span id=\"Process_Example\">\u6d41\u7a0b\u793a\u4f8b<\/span><\/h4>\n<figure id=\"5dfa\" class=\"graf graf--figure graf-after--h4\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0Ec6H3EPselPHna9t.png\" data-image-id=\"0*Ec6H3EPselPHna9t.png\" data-width=\"539\" data-height=\"140\" \/><\/figure>\n<h4 id=\"8cfc\" class=\"graf graf--h4 graf-after--figure\"><span id=\"Data_Flow\">\u6570\u636e\u6d41<\/span><\/h4>\n<p id=\"d620\" class=\"graf graf--p graf-after--h4\">\u6570\u636e\u6d41\u662f\u6570\u636e\u4ece\u4fe1\u606f\u7cfb\u7edf\u7684\u4e00\u4e2a\u90e8\u5206\u79fb\u52a8\u5230\u53e6\u4e00\u4e2a\u90e8\u5206\u7684\u8def\u5f84\u3002\u6570\u636e\u6d41\u53ef\u4ee5\u8868\u793a\u5355\u4e2a\u6570\u636e\u5143\u7d20\uff0c\u4f8b\u5982\u5ba2\u6237 ID\uff0c\u4e5f\u53ef\u4ee5\u8868\u793a\u4e00\u7ec4\u6570\u636e\u5143\u7d20\uff08\u6216\u6570\u636e\u7ed3\u6784\uff09\u3002<\/p>\n<p id=\"7183\" class=\"graf graf--p graf-after--p\">\u4f8b\u5b50\uff1a<\/p>\n<ul class=\"postList\">\n<li id=\"ea21\" class=\"graf graf--li graf-after--p\">Customer_info\uff08\u59d3\u6c0f\u3001\u540d\u5b57\u3001SS#\u3001\u7535\u8bdd\u53f7\u7801\u7b49\uff09<\/li>\n<li id=\"e3d2\" class=\"graf graf--li graf-after--li\">Order_info\uff08OrderId\u3001Item#\u3001OrderDate\u3001CustomerID \u7b49\uff09\u3002<\/li>\n<\/ul>\n<h4 id=\"b4a9\" class=\"graf graf--h4 graf-after--li\"><span id=\"Data_flow_Example\">\u6570\u636e\u6d41\u793a\u4f8b\uff1a<\/span><\/h4>\n<figure id=\"f6db\" class=\"graf graf--figure graf-after--h4\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0vzLEdbukTYs6Dvsf.png\" data-image-id=\"0*vzLEdbukTYs6Dvsf.png\" data-width=\"331\" data-height=\"140\" \/><\/figure>\n<h4 id=\"876a\" class=\"graf graf--h4 graf-after--figure\"><span id=\"Notation\">\u7b26\u53f7<\/span><\/h4>\n<ul class=\"postList\">\n<li id=\"b617\" class=\"graf graf--li graf-after--h4\">\u5e26\u6709\u4f20\u5165\u7bad\u5934\u7684\u76f4\u7ebf\u662f\u8f93\u5165\u6570\u636e\u6d41<\/li>\n<li id=\"4326\" class=\"graf graf--li graf-after--li\">\u5e26\u5916\u5411\u7bad\u5934\u7684\u76f4\u7ebf\u662f\u8f93\u51fa\u6570\u636e\u6d41<\/li>\n<\/ul>\n<p id=\"e2fc\" class=\"graf graf--p graf-after--li\">\u6ce8\u610f\uff1a<\/p>\n<p id=\"af07\" class=\"graf graf--p graf-after--p\">\u56e0\u4e3a\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u5c06\u6570\u636e\u4ece\u4e00\u79cd\u5f62\u5f0f\u66f4\u6539\u4e3a\u53e6\u4e00\u79cd\u5f62\u5f0f\uff0c\u6240\u4ee5\u6bcf\u4e2a\u8fdb\u7a0b\u7b26\u53f7\u5fc5\u987b\u81f3\u5c11\u6709\u4e00\u4e2a\u6570\u636e\u6d41\u8fdb\u5165\uff0c\u4e00\u4e2a\u6570\u636e\u6d41\u5fc5\u987b\u9000\u51fa\u3002<\/p>\n<h3 id=\"2247\" class=\"graf graf--h3 graf-after--p\"><span id=\"Data_Store\">\u6570\u636e\u5b58\u50a8<\/span><\/h3>\n<p id=\"ca21\" class=\"graf graf--p graf-after--h3\">\u6570\u636e\u6d41\u56fe\u4e2d\u4f7f\u7528\u6570\u636e\u5b58\u50a8\u6216\u6570\u636e\u5b58\u50a8\u5e93\u6765\u8868\u793a\u7cfb\u7edf\u5fc5\u987b\u4fdd\u7559\u6570\u636e\u7684\u60c5\u51b5\uff0c\u56e0\u4e3a\u4e00\u4e2a\u6216\u591a\u4e2a\u8fdb\u7a0b\u9700\u8981\u5728\u4ee5\u540e\u4f7f\u7528\u5b58\u50a8\u7684\u6570\u636e\u3002<\/p>\n<h4 id=\"7137\" class=\"graf graf--h4 graf-after--p\"><span id=\"Notation1\">\u7b26\u53f7<\/span><\/h4>\n<ul class=\"postList\">\n<li id=\"51ca\" class=\"graf graf--li graf-after--h4\">\u53ef\u4ee5\u5c06\u6570\u636e\u5199\u5165\u6570\u636e\u5b58\u50a8\u533a\uff0c\u7531\u5916\u5411\u7bad\u5934\u8868\u793a<\/li>\n<li id=\"d832\" class=\"graf graf--li graf-after--li\">\u53ef\u4ee5\u4ece\u6570\u636e\u5b58\u50a8\u4e2d\u8bfb\u53d6\u6570\u636e\uff0c\u6570\u636e\u5b58\u50a8\u7531\u4f20\u5165\u7bad\u5934\u8868\u793a\u3002<\/li>\n<li id=\"2f79\" class=\"graf graf--li graf-after--li\">\u4f8b\u5982\uff1a\u5e93\u5b58\u3001\u5e94\u6536\u8d26\u6b3e\u3001\u8ba2\u5355\u548c\u6bcf\u65e5\u4ed8\u6b3e\u3002<\/li>\n<\/ul>\n<figure id=\"778b\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/02k_6sJt529bF_gsS.png\" data-image-id=\"0*2k_6sJt529bF_gsS.png\" data-width=\"418\" data-height=\"41\" \/><\/figure>\n<h4 id=\"ea69\" class=\"graf graf--h4 graf-after--figure\"><span id=\"Data_Store_Example\">\u6570\u636e\u5b58\u50a8\u793a\u4f8b<\/span><\/h4>\n<figure id=\"c483\" class=\"graf graf--figure graf-after--h4\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0569xERyhl7UZTw8E.png\" data-image-id=\"0*569xERyhl7UZTw8E.png\" data-width=\"334\" data-height=\"180\" \/><\/figure>\n<p id=\"d1a8\" class=\"graf graf--p graf-after--figure\">\u6ce8\u610f\uff1a<\/p>\n<ul class=\"postList\">\n<li id=\"a221\" class=\"graf graf--li graf-after--p\">\u6570\u636e\u5b58\u50a8\u5fc5\u987b\u901a\u8fc7\u6570\u636e\u6d41\u8fde\u63a5\u5230\u6d41\u7a0b\u3002<\/li>\n<li id=\"43e5\" class=\"graf graf--li graf-after--li\">\u6bcf\u4e2a\u6570\u636e\u5b58\u50a8\u5fc5\u987b\u5177\u6709\u81f3\u5c11\u4e00\u4e2a\u8f93\u5165\u6570\u636e\u6d41\u548c\u81f3\u5c11\u4e00\u4e2a\u8f93\u51fa\u6570\u636e\u6d41\uff08\u5373\u4f7f\u8f93\u51fa\u6570\u636e\u6d41\u662f\u63a7\u5236\u6216\u786e\u8ba4\u6d88\u606f\uff09\u3002<\/li>\n<\/ul>\n<h3 id=\"bfa8\" class=\"graf graf--h3 graf-after--li\"><span id=\"External_Entity\">\u5916\u90e8\u5b9e\u4f53<\/span><\/h3>\n<p id=\"a752\" class=\"graf graf--p 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id=\"Notation2\">\u7b26\u53f7<\/span><\/h4>\n<ul class=\"postList\">\n<li id=\"6ee1\" class=\"graf graf--li graf-after--h4\">\u5ba2\u6237\u63d0\u4ea4\u8ba2\u5355\uff0c\u7136\u540e\u4ece\u7cfb\u7edf\u6536\u5230\u8d26\u5355<\/li>\n<li id=\"ab62\" class=\"graf graf--li graf-after--li\">\u4f9b\u5e94\u5546\u5f00\u5177\u53d1\u7968<\/li>\n<\/ul>\n<figure id=\"c830\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0NKFTg1DoOboXpTc.png\" data-image-id=\"0*NKFTg1DoOboXpTc_.png\" data-width=\"390\" data-height=\"41\" \/><\/figure>\n<h4 id=\"d473\" class=\"graf graf--h4 graf-after--figure\"><span id=\"External_Entity_Example\">\u5916\u90e8\u5b9e\u4f53\u793a\u4f8b<\/span><\/h4>\n<figure id=\"ca7d\" class=\"graf graf--figure graf-after--h4\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0hfTApAURxleMa6XZ.png\" data-image-id=\"0*hfTApAURxleMa6XZ.png\" data-width=\"311\" data-height=\"71\" \/><\/figure>\n<p id=\"ff78\" class=\"graf graf--p graf-after--figure\">\u6ce8\u610f\uff1a<\/p>\n<ul class=\"postList\">\n<li id=\"4dfa\" class=\"graf graf--li graf-after--p\">\u5916\u90e8\u5b9e\u4f53\u4e5f\u88ab\u79f0\u4e3a\u7ec8\u7ed3\u8005\uff0c\u56e0\u4e3a\u5b83\u4eec\u662f\u6570\u636e\u6e90\u6216\u6700\u7ec8\u76ee\u7684\u5730\u3002<\/li>\n<li id=\"28a9\" class=\"graf graf--li graf-after--li graf--trailing\">\u5916\u90e8\u5b9e\u4f53\u5fc5\u987b\u901a\u8fc7\u6570\u636e\u6d41\u8fde\u63a5\u5230\u6d41\u7a0b\u3002<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"section section--body section--last\">\n<div class=\"section-divider\">\n<hr class=\"section-divider\" \/>\n<\/div>\n<div class=\"section-content\">\n<div class=\"section-inner sectionLayout--insetColumn\">\n<h3 id=\"df4f\" class=\"graf graf--h3 graf--leading\"><span id=\"Rule_of_Data_Flow\">\u6570\u636e\u6d41\u89c4\u5219<\/span><\/h3>\n<p id=\"0441\" class=\"graf graf--p graf-after--h3\">\u5f00\u53d1 DFD \u7684\u89c4\u5219\u4e4b\u4e00\u662f\u6240\u6709\u6d41\u7a0b\u90fd\u5fc5\u987b\u4ee5\u5904\u7406\u6b65\u9aa4\u5f00\u59cb\u548c\u7ed3\u675f\u3002\u8fd9\u662f\u975e\u5e38\u5408\u4e4e\u903b\u8f91\u7684\uff0c\u56e0\u4e3a\u6570\u636e\u4e0d\u80fd\u968f\u7740\u5904\u7406\u800c\u81ea\u884c\u8f6c\u6362\u3002\u901a\u8fc7\u4f7f\u7528\u62c7\u6307\u89c4\u5219\uff0c\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u8bc6\u522b\u975e\u6cd5\u6570\u636e\u6d41\u5e76\u5728 DFD \u4e2d\u7ea0\u6b63\u5b83\u4eec\u3002<\/p>\n<h4 id=\"96c2\" class=\"graf graf--h4 graf-after--p\"><span id=\"Wrong_Right_Description\">\u9519\u8bef\/\u6b63\u786e\u63cf\u8ff0<\/span><\/h4>\n<figure id=\"8116\" class=\"graf graf--figure graf-after--h4\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0mO8fiwOTgYQuyRPL.png\" data-image-id=\"0*mO8fiwOTgYQuyRPL.png\" data-width=\"296\" data-height=\"42\" \/><\/figure>\n<figure id=\"2dd6\" class=\"graf graf--figure graf-after--figure\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0Y6pRNDUxux0qwlD0.png\" data-image-id=\"0*Y6pRNDUxux0qwlD0.png\" data-width=\"355\" data-height=\"71\" \/><\/figure>\n<p id=\"6baa\" class=\"graf graf--p graf-after--figure\">\u4e00\u4e2a\u5b9e\u4f53\u4e0d\u80fd\u5728\u6ca1\u6709\u8fdb\u884c\u67d0\u4e9b\u5904\u7406\u7684\u60c5\u51b5\u4e0b\u5411\u53e6\u4e00\u4e2a\u5b9e\u4f53\u63d0\u4f9b\u6570\u636e\u3002<\/p>\n<figure id=\"dd87\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0TPIsRd6pLvxKfuIc.png\" data-image-id=\"0*TPIsRd6pLvxKfuIc.png\" data-width=\"316\" data-height=\"42\" \/><\/figure>\n<figure id=\"d185\" class=\"graf graf--figure graf-after--figure\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0lihI4SPMnbJkeaFa.png\" data-image-id=\"0*lihI4SPMnbJkeaFa.png\" data-width=\"375\" data-height=\"71\" \/><\/figure>\n<p id=\"8187\" class=\"graf graf--p graf-after--figure\">\u6570\u636e\u4e0d\u80fd\u5728\u672a\u7ecf\u5904\u7406\u7684\u60c5\u51b5\u4e0b\u76f4\u63a5\u4ece\u5b9e\u4f53\u79fb\u52a8\u5230\u6570\u636e\u6545\u4e8b\u3002<\/p>\n<figure id=\"df9c\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0k7BuGRnRgKJqzmpk.png\" data-image-id=\"0*k7BuGRnRgKJqzmpk.png\" data-width=\"316\" data-height=\"41\" \/><\/figure>\n<figure id=\"bbee\" class=\"graf graf--figure graf-after--figure\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0scBg7WRzIF69UTRK.png\" data-image-id=\"0*scBg7WRzIF69UTRK.png\" data-width=\"375\" data-height=\"71\" \/><\/figure>\n<p id=\"da62\" class=\"graf graf--p graf-after--figure\">\u672a\u7ecf\u5904\u7406\u7684\u6570\u636e\u4e0d\u80fd\u76f4\u63a5\u4ece\u6570\u636e\u5b58\u50a8\u4e2d\u79fb\u52a8\u3002<\/p>\n<figure id=\"dc34\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0AZXi_Ona2406ZNT.png\" data-image-id=\"0*AZXi_Ona2406ZNT-.png\" data-width=\"336\" data-height=\"41\" \/><\/figure>\n<figure id=\"a005\" class=\"graf graf--figure graf-after--figure\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/02KaheQzAdmwNKcjr.png\" data-image-id=\"0*2KaheQzAdmwNKcjr.png\" data-width=\"395\" data-height=\"71\" \/><\/figure>\n<p id=\"a3f9\" class=\"graf graf--p graf-after--figure\">\u6570\u636e\u4e0d\u80fd\u5728\u672a\u7ecf\u5904\u7406\u7684\u60c5\u51b5\u4e0b\u76f4\u63a5\u4ece\u4e00\u4e2a\u6570\u636e\u5b58\u50a8\u79fb\u52a8\u5230\u53e6\u4e00\u4e2a\u6570\u636e\u5b58\u50a8\u3002<\/p>\n<h3 id=\"1c08\" class=\"graf graf--h3 graf-after--p\"><span id=\"Other_frequently-made_mistakes_in_DFD\">DFD \u4e2d\u7684\u5176\u4ed6\u5e38\u89c1\u9519\u8bef<\/span><\/h3>\n<p id=\"b84a\" class=\"graf graf--p graf-after--h3\">\u5f53\u4e00\u4e2a\u5904\u7406\u6b65\u9aa4\u7684\u8f93\u51fa\u4e0e\u5176\u8f93\u5165\u4e0d\u5339\u914d\u65f6\uff0c\u4f1a\u51fa\u73b0\u7b2c\u4e8c\u7c7b DFD \u9519\u8bef\uff0c\u5b83\u4eec\u53ef\u4ee5\u5206\u7c7b\u4e3a\uff1a<\/p>\n<ul class=\"postList\">\n<li id=\"26fb\" class=\"graf graf--li graf-after--p\">\u9ed1\u6d1e\u2014\u2014\u4e00\u4e2a\u5904\u7406\u6b65\u9aa4\u53ef\u80fd\u6709\u8f93\u5165\u6d41\u4f46\u6ca1\u6709\u8f93\u51fa\u6d41\u3002<\/li>\n<li id=\"9ed0\" class=\"graf graf--li graf-after--li\">\u5947\u8ff9\u2014\u2014\u4e00\u4e2a\u5904\u7406\u6b65\u9aa4\u53ef\u80fd\u6709\u8f93\u51fa\u6d41\u4f46\u6ca1\u6709\u8f93\u5165\u6d41\u3002<\/li>\n<li id=\"5838\" class=\"graf graf--li graf-after--li\">\u7070\u6d1e\u2014\u2014\u4e00\u4e2a\u5904\u7406\u6b65\u9aa4\u7684\u8f93\u51fa\u53ef\u80fd\u5927\u4e8e\u5176\u8f93\u5165\u7684\u603b\u548c<\/li>\n<\/ul>\n<figure id=\"01b5\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0Lj0XP6QTspzza5vD.png\" data-image-id=\"0*Lj0XP6QTspzza5vD.png\" data-width=\"634\" data-height=\"468\" \/><\/figure>\n<h3 id=\"c9dd\" class=\"graf graf--h3 graf-after--figure\"><span id=\"Free_UML_Tool\">\u514d\u8d39\u7684 UML \u5de5\u5177<\/span><\/h3>\n<ul class=\"postList\">\n<li id=\"8a80\" class=\"graf graf--li graf-after--h3\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/dfd-maker\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/dfd-maker\/\">\u5728\u7ebf\u6570\u636e\u6d41\u7a0b\u56fe\u5236\u4f5c\u5668<\/a><\/li>\n<li id=\"dc8b\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/tutorials\/how-to-create-data-flow-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/tutorials\/how-to-create-data-flow-diagram\/\">\u5982\u4f55\u521b\u5efa\u6570\u636e\u6d41\u56fe\uff08DFD\uff09\uff1f<\/a><\/li>\n<li id=\"ad68\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/solution\/drawdfd\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/solution\/drawdfd\/\">\u6570\u636e\u6d41\u56fe (DFD) \u8f6f\u4ef6<\/a><\/li>\n<\/ul>\n<h4 id=\"3bd4\" class=\"graf graf--h4 graf-after--li\"><span id=\"DFD_Different_Notation\">DFD \u4e0d\u540c\u8868\u793a\u6cd5<\/span><\/h4>\n<ul class=\"postList\">\n<li id=\"318f\" class=\"graf graf--li graf-after--h4 graf--trailing\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/online.visual-paradigm.com\/cn\/knowledge\/software-design\/gane-sarson-dfd-tutorial\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/cn\/knowledge\/software-design\/gane-sarson-dfd-tutorial\/\"><span class=\"goog-text-highlight\">Gane-Sarson \u6570\u636e\u6d41\u7a0b\u56fe\u6559\u7a0b<\/span><\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>\u5c3d\u7ba1\u9762\u5411\u6570\u636e\u6d41\u7684\u5efa\u6a21\u88ab\u4e00\u4e9b\u8f6f\u4ef6\u5de5\u7a0b\u5e08\u8ba4\u4e3a\u662f\u4e00\u79cd\u8fc7\u65f6\u7684\u6280\u672f\uff0c\u4f46\u5b83\u4ecd\u7136\u662f\u6700\u5e7f\u6cdb\u4f7f\u7528\u7684\u9700\u6c42\u5206\u6790\u7b26\u53f7\u4e4b\u4e00\u3002\u5c3d\u7ba1\u6570\u636e\u6d41\u56fe\uff08DFDs\uff09\u4e0d\u662fUML\u7684\u6b63\u5f0f\u90e8\u5206\uff0c\u4f46\u5b83\u4eec\u53ef\u4ee5\u7528\u6765\u8865\u5145UML\u56fe\uff0c\u5e76\u63d0\u4f9b\u5bf9\u7cfb\u7edf\u9700\u6c42\u548c\u8fc7\u7a0b\u7684\u989d\u5916\u6d1e\u5bdf\u529b\u3002<\/p>\n","protected":false},"author":3,"featured_media":5940,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[13,5,3],"tags":[],"class_list":["post-5936","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-online-diagrams","category-software-engineering","category-unified-modeling-language"],"yoast_head":"<!-- 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