{"id":6150,"date":"2022-02-15T05:26:09","date_gmt":"2022-02-15T05:26:09","guid":{"rendered":"https:\/\/www.cybermedian.com\/cn\/?p=6150"},"modified":"2025-03-07T01:28:33","modified_gmt":"2025-03-07T01:28:33","slug":"%e9%80%90%e6%ad%a5%e7%bb%86%e5%8c%96%e5%bc%80%e5%8f%91-dfd","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/","title":{"rendered":"\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD"},"content":{"rendered":"<p id=\"1cbb\" 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\u56fe\u00a0<\/a>(DFDS) \u8868\u793a\u901a\u8fc7\u7cfb\u7edf\u7684\u4fe1\u606f\u6d41\u3002DFD \u5f88\u5feb\u6210\u4e3a\u4e00\u79cd\u6d41\u884c\u7684\u65b9\u5f0f\u6765\u53ef\u89c6\u5316\u8f6f\u4ef6\u7cfb\u7edf\u8fc7\u7a0b\u4e2d\u6d89\u53ca\u7684\u4e3b\u8981\u6b65\u9aa4\u548c\u6570\u636e\u3002<\/p>\n<p id=\"b108\" class=\"graf graf--p graf-after--p\">\u6570\u636e\u6d41\u56fe (DFD) \u662f\u8868\u793a\u6d41\u7a0b\u6216\u7cfb\u7edf\uff08\u901a\u5e38\u662f\u4fe1\u606f\u7cfb\u7edf\uff09\u7684\u6570\u636e\u6d41\u7684\u4e00\u79cd\u65b9\u5f0f\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul class=\"postList\">\n<li id=\"0e20\" class=\"graf graf--li graf-after--p\">\u6570\u636e\u4ece\u4f55\u800c\u6765\uff1f<\/li>\n<li id=\"6a76\" class=\"graf graf--li graf-after--li\">\u5b83\u53bb\u54ea\u513f\u4e86\uff1f<\/li>\n<li id=\"2dec\" class=\"graf graf--li graf-after--li\">\u5b83\u662f\u5982\u4f55\u5b58\u50a8\u7684\uff1f<\/li>\n<\/ul>\n<p id=\"f2d7\" class=\"graf graf--p graf-after--li\">\u6362\u53e5\u8bdd\u8bf4\uff0c\u5b83\u663e\u793a\u4e86\u7cfb\u7edf\u5982\u4f55\u4f7f\u7528\u81ea\u4e0a\u800c\u4e0b\u7684\u5206\u89e3\u6280\u672f\uff08\u6216\u79f0\u4e3a\u9010\u6b65\u7ec6\u5316\uff09\u5728\u8f93\u5165\u548c\u8f93\u51fa\u65b9\u9762\u5904\u7406\u6570\u636e\u3002<\/p>\n<h4 id=\"aad7\" class=\"graf graf--h4 graf-after--p\"><span id=\"What_is_Stepwise_Refinement\">\u4ec0\u4e48\u662f\u9010\u6b65\u7ec6\u5316\uff1f<\/span><\/h4>\n<p id=\"5056\" class=\"graf graf--p graf-after--h4\">\u89e3\u51b3\u590d\u6742\u95ee\u9898\u7684\u6709\u6548\u65b9\u6cd5\u4e4b\u4e00\u662f\u5c06\u5176\u5206\u89e3\u4e3a\u66f4\u7b80\u5355\u7684\u5b50\u95ee\u9898\u3002\u60a8\u9996\u5148\u5c06\u6574\u4e2a\u4efb\u52a1\u5206\u89e3\u4e3a\u66f4\u7b80\u5355\u7684\u90e8\u5206\u3002<\/p>\n<p id=\"df59\" class=\"graf graf--p graf-after--p\">\u9010\u6b65\u7ec6\u5316\u672c\u8d28\u4e0a\u662f\u5bf9\u7cfb\u7edf\u8fdb\u884c\u5206\u89e3\uff0c\u4ee5\u6df1\u5165\u4e86\u89e3\u6784\u6210\u7cfb\u7edf\u7684\u5b50\u7cfb\u7edf\uff0c\u79f0\u4e3a\u81ea\u9876\u5411\u4e0b\u5206\u89e3\u6cd5\u3002<\/p>\n<p id=\"2165\" class=\"graf graf--p graf-after--p\">\u4f8b\u5982\uff0c\u7cfb\u7edf\u6982\u8ff0\u88ab\u5f00\u53d1\u4e3a\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/knowledge\/software-design\/dfd-tutorial-yourdon-notation\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/knowledge\/software-design\/dfd-tutorial-yourdon-notation\/\">\u7cfb\u7edf\u4e0a\u4e0b\u6587\u56fe\u00a0<\/a>\uff0c\u5b83\u6307\u5b9a\u4f46\u4e0d\u6307\u5b9a\u5b50\u7cfb\u7edf\u7684\u4efb\u4f55\u7ea7\u522b\u3002\u7136\u540e\u5c06\u8fd9\u4e9b\u5b50\u7cfb\u7edf\u4e2d\u7684\u6bcf\u4e00\u4e2a\u7ec6\u5316\u5230\u66f4\u8be6\u7ec6\u7684\u7a0b\u5ea6\uff08\u4f8b\u5982 DFD \u4e2d\u7684\u7ea7\u522b 0\u30011\u30012 \u7b49\uff09\uff0c\u6709\u65f6\u5728\u8bb8\u591a\u5176\u4ed6\u5b50\u7cfb\u7edf\u7ea7\u522b\u4e0a\u8fdb\u884c\u7ec6\u5316\uff0c\u76f4\u5230\u6574\u4e2a\u89c4\u8303\u7b80\u5316\u4e3a\u57fa\u672c\u5143\u7d20\u3002<\/p>\n<p id=\"c0eb\" class=\"graf graf--p graf-after--p\">\u901a\u5e38\uff0c\u5934\u8111\u98ce\u66b4\u4ea7\u751f\u7684\u60f3\u6cd5\uff08\u5b9e\u9645\u4e0a\u662f\u6211\u4eec\u7684\u5f85\u529e\u4e8b\u9879\uff09\u5904\u4e8e\u4e0d\u540c\u201c\u7ec6\u8282\u201d\u7ea7\u522b\u2014\u2014\u5176\u4e2d\u4e00\u4e9b\u6bd4\u5176\u4ed6\u201c\u4f4e\u7ea7\u201d\uff0c\u6216\u8005\uff0c\u6211\u4eec\u53ef\u4ee5\u8bf4\uff0c\u4e00\u4e9b\u5305\u542b\u5176\u4ed6\u3002<\/p>\n<p id=\"2d53\" class=\"graf graf--p graf-after--p\">\u8ba9\u6211\u4eec\u6309\u5c42\u6b21\u6392\u5217\u8fd9\u4e9b\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u8ba9\u6211\u4eec\u786e\u5b9a\u54ea\u4e9b\u6b65\u9aa4\u662f\u53e6\u4e00\u4e2a\u6b65\u9aa4\u7684\u4e00\u90e8\u5206\u3002\u4e00\u79cd\u65b9\u6cd5\u662f\u5c06\u6bcf\u4e2a\u52a8\u4f5c\u89c6\u4e3a\u4e00\u7ec4\u52a8\u4f5c\u3002<\/p>\n<h4 id=\"3e6e\" class=\"graf graf--h4 graf-after--p\"><span id=\"Stepwise_Refinement_Example\">\u9010\u6b65\u7ec6\u5316\u793a\u4f8b<\/span><\/h4>\n<figure id=\"8d2f\" 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\/0qxK-mPAO_MWdNpr0.gif\" data-image-id=\"0*qxK-mPAO_MWdNpr0.gif\" data-is-featured=\"true\" \/><\/figure>\n<h4 id=\"645d\" class=\"graf graf--h4 graf-after--figure\"><span id=\"Clean_house\"><strong class=\"markup--strong markup--h4-strong\"><em class=\"markup--em markup--h4-em\">\u6536\u62fe\u5c4b\u5b50<\/em><\/strong><\/span><\/h4>\n<blockquote id=\"4d28\" class=\"graf graf--blockquote graf-after--h4\"><p>{\u771f\u7a7a\u9910\u5385\uff0c\u6574\u7406\u5ba2\u5385}<\/p><\/blockquote>\n<h4 id=\"8321\" class=\"graf graf--h4 graf-after--blockquote\"><span id=\"Cook\"><strong class=\"markup--strong markup--h4-strong\"><em class=\"markup--em markup--h4-em\">\u53a8\u5e08<\/em><\/strong><\/span><\/h4>\n<blockquote id=\"7a12\" class=\"graf graf--blockquote graf-after--h4\"><p>{\u9009\u62e9\u98df\u8c31\uff0c\u8d2d\u4e70\u98df\u6750\uff0c\u70e4\u9e21\u3002\u505a\u852c\u83dc}<\/p><\/blockquote>\n<h4 id=\"c7f4\" class=\"graf graf--h4 graf-after--blockquote\"><span id=\"Set_Table\"><em class=\"markup--em markup--h4-em\">\u8bbe\u7f6e\u8868<\/em><\/span><\/h4>\n<blockquote id=\"2932\" class=\"graf graf--blockquote graf-after--h4\"><p>{<em class=\"markup--em markup--blockquote-em\">\u627e\u684c\u5e03 , \u62ff\u51fa\u76d8\u5b50 , \u62ff\u51fa\u73bb\u7483\u5668\u76bf , \u62ff\u51fa\u94f6\u5668 , \u9910\u5dfe<\/em>}<\/p><\/blockquote>\n<h4 id=\"558c\" class=\"graf graf--h4 graf-after--blockquote\"><span id=\"Roast_chicken\"><em class=\"markup--em markup--h4-em\">\u70e4\u9e21<\/em><\/span><\/h4>\n<blockquote id=\"ade9\" class=\"graf graf--blockquote graf-after--h4\"><p>{<em class=\"markup--em markup--blockquote-em\">\u70e4\u7bb1\u9884\u70ed\u81f3\u00a0<\/em>400 \u5ea6\uff0c\u00a0<em class=\"markup--em markup--blockquote-em\">\u5c06\u9e21\u8089\u653e\u5165\u9505\u4e2d\uff0c\u5c06\u9e21\u8089\u653e\u5165\u00a0<\/em>400\u00a0<em class=\"markup--em markup--blockquote-em\">\u5ea6\u70e4\u7bb1\u4e2d\u00a0<\/em>90\u00a0<em class=\"markup--em markup--blockquote-em\">\u5206\u949f<\/em>}<\/p><\/blockquote>\n<h4 id=\"6e69\" class=\"graf graf--h4 graf-after--blockquote\"><span id=\"Do_Veggie\"><em class=\"markup--em markup--h4-em\">\u505a\u7d20\u98df<\/em><\/span><\/h4>\n<blockquote id=\"1335\" class=\"graf graf--blockquote graf-after--h4\"><p>{<em class=\"markup--em markup--blockquote-em\">\u5207\u83dc\uff0c\u716e\u83dc<\/em>}<\/p><\/blockquote>\n<p id=\"0e0c\" class=\"graf graf--p graf-after--blockquote\">\uff08*\u6765\u6e90\uff1a\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/en.wikibooks.org\/wiki\/A-level_Computing\/AQA\/Problem_Solving,_Programming,_Data_Representation_and_Practical_Exercise\/Problem_Solving\/Top-down_design_and_Step-wise_refinement\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/en.wikibooks.org\/wiki\/A-level_Computing\/AQA\/Problem_Solving,_Programming,_Data_Representation_and_Practical_Exercise\/Problem_Solving\/Top-down_design_and_Step-wise_refinement\">\u81ea\u4e0a\u800c\u4e0b\u7684\u8bbe\u8ba1\u548c\u9010\u6b65\u7ec6\u5316\u2014\u2014\u7ef4\u57fa\u4e66\u7c4d<\/a>\uff09<\/p>\n<p id=\"bc4f\" class=\"graf graf--p graf-after--p\">\u4e00\u65e6\u786e\u5b9a\u4e86\u8fd9\u4e9b\u57fa\u672c\u5143\u7d20\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u5c06\u5b83\u4eec\u6784\u5efa\u5230\u8ba1\u7b97\u673a\u6a21\u5757\u4e2d\u3002\u4e00\u65e6\u5b83\u4eec\u5efa\u6210\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u5c06\u5b83\u4eec\u7ec4\u5408\u5728\u4e00\u8d77\uff0c\u5e76\u7528\u8fd9\u4e9b\u5355\u72ec\u7684\u7ec4\u4ef6\u7ec4\u6210\u6574\u4e2a\u7cfb\u7edf\u3002<\/p>\n<h3 id=\"854f\" class=\"graf graf--h3 graf-after--p\"><span id=\"Top-Down_Decomposition_Technique_in_DFD\">DFD\u4e2d\u7684\u81ea\u9876\u5411\u4e0b\u5206\u89e3\u6280\u672f<\/span><\/h3>\n<p id=\"167e\" class=\"graf graf--p graf-after--h3\">\u5728 DFD \u4e2d\uff0c\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/knowledge\/software-design\/dfd-tutorial-yourdon-notation\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/knowledge\/software-design\/dfd-tutorial-yourdon-notation\/\">\u81ea\u4e0a\u800c\u4e0b\u7684\u5206\u89e3<\/a>\u00a0\uff08\u4e5f\u79f0\u4e3a\u5206\u7ea7\u6216\u9010\u6b65\u7ec6\u5316\uff09\u662f\u4e00\u79cd\u7528\u4e8e\u5728\u8f83\u4f4e\u7ea7\u522b\u7684 DFD \u4e2d\u663e\u793a\u66f4\u591a\u7ec6\u8282\u7684\u6280\u672f\u3002\u8c03\u5e73\u662f\u901a\u8fc7\u7ed8\u5236\u4e00\u7cfb\u5217\u8d8a\u6765\u8d8a\u8be6\u7ec6\u7684\u56fe\u8868\u6765\u5b8c\u6210\u7684\uff0c\u76f4\u5230\u8fbe\u5230\u6240\u9700\u7684\u8be6\u7ec6\u7a0b\u5ea6\u3002\u5982\u56fe\u6240\u793a\uff0cDFD Leveling \u9996\u5148\u5c06\u76ee\u6807\u7cfb\u7edf\u663e\u793a\u4e3a\u5355\u4e2a\u8fdb\u7a0b\uff0c\u7136\u540e\u663e\u793a\u66f4\u591a\u7ec6\u8282\uff0c\u76f4\u5230\u6240\u6709\u8fdb\u7a0b\u90fd\u662f\u529f\u80fd\u539f\u8bed\u3002<\/p>\n<figure id=\"6dc4\" 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\/0TZMKm3bnkiFJpb4s.png\" data-image-id=\"0*TZMKm3bnkiFJpb4s.png\" data-width=\"882\" data-height=\"549\" \/><\/figure>\n<ul class=\"postList\">\n<li id=\"0b42\" class=\"graf graf--li graf-after--figure\">\u66f4\u9ad8\u7ea7\u522b\u7684 DFD \u4e0d\u592a\u8be6\u7ec6<\/li>\n<li id=\"2991\" class=\"graf graf--li graf-after--li\">\u9ad8\u5c42 DFD \u5c06\u88ab\u5206\u89e3\u4e3a\u66f4\u8be6\u7ec6\u7684\u4f4e\u5c42 DFD<\/li>\n<li id=\"fa92\" class=\"graf graf--li graf-after--li\">\u4e0a\u4e0b\u6587\u56fe\u662f\u5c42\u6b21\u7ed3\u6784\u4e2d\u6700\u9ad8\u7684\uff08\u8bf7\u53c2\u9605 DFD \u521b\u5efa\u89c4\u5219\uff09\u3002\u6240\u8c13\u7684\u96f6\u7ea7\u540e\u9762\u662fDFD 0\uff0c\u4ece\u8fdb\u7a0b\u7f16\u53f7\u5f00\u59cb\uff08EG\uff0c\u8fdb\u7a0b1\uff0c\u8fdb\u7a0b2\uff09\u3002<\/li>\n<li id=\"b9b5\" class=\"graf graf--li graf-after--li\">\u63a5\u4e0b\u6765\uff0c\u6240\u8c13\u7684\u7b2c\u4e00\u5c42\u2014\u2014DFD 1\u2014\u2014\u7ee7\u7eed\u7f16\u53f7\u3002EG Process 1\u5206\u4e3aDFD\u7684\u524d\u4e09\u4e2a\u5c42\u6b21\uff0c\u5206\u522b\u7f16\u53f7\u4e3a1.1\u30011.2\u548c1.3\u3002<\/li>\n<li id=\"cadf\" class=\"graf graf--li graf-after--li\">\u540c\u6837\uff0c\u7b2c\u4e8c\u7ea7 (DFD 2) \u4e2d\u7684\u6d41\u7a0b\u7f16\u53f7\u4e3a EG 1.1.1\u30011.1.2\u30011.1.3 \u548c 1.1.4\u3002<\/li>\n<li id=\"fce7\" class=\"graf graf--li graf-after--li\">\u7ea7\u522b\u7684\u6570\u91cf\u53d6\u51b3\u4e8e\u6a21\u578b\u7cfb\u7edf\u7684\u5927\u5c0f\u3002\u7ea7\u522b 0 \u4e2d\u7684\u6bcf\u4e2a\u8fc7\u7a0b\u53ef\u80fd\u6ca1\u6709\u76f8\u540c\u6570\u91cf\u7684\u5206\u89e3\u7ea7\u522b\u3002<\/li>\n<\/ul>\n<h3 id=\"a916\" class=\"graf graf--h3 graf-after--li\"><span id=\"DFD_Examples_Customer_Services_System_Example\">DFD \u793a\u4f8b \u2014 \u5ba2\u6237\u670d\u52a1\u7cfb\u7edf\u793a\u4f8b<\/span><\/h3>\n<p id=\"ad47\" class=\"graf graf--p graf-after--h3\">\u6570\u636e\u6d41\u56fe\u662f\u4e00\u4e2a\u5c42\u6b21\u7ed3\u6784\u56fe\uff0c\u5305\u62ec\uff1a<\/p>\n<ol class=\"postList\">\n<li id=\"a743\" class=\"graf graf--li graf-after--p\">\u4e0a\u4e0b\u6587\u56fe\uff08\u6982\u5ff5\u4e0a\u4e3a\u96f6\u7ea7\uff09<\/li>\n<li id=\"2a86\" class=\"graf graf--li graf-after--li\">1 \u7ea7 DFD<\/li>\n<li id=\"210c\" class=\"graf graf--li graf-after--li\">\u4ee5\u53ca\u53ef\u80fd\u7684 2 \u7ea7 DFD \u548c\u66f4\u591a\u7ea7\u522b\u7684\u529f\u80fd\u5206\u89e3\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u7cfb\u7edf\u7684\u590d\u6742\u6027<\/li>\n<\/ol>\n<h3 id=\"0d08\" class=\"graf graf--h3 graf-after--li\"><span id=\"Context_DFD\">\u4e0a\u4e0b\u6587 DFD<\/span><\/h3>\n<p id=\"e943\" class=\"graf graf--p graf-after--h3\">\u4e0b\u56fe\u663e\u793a\u4e86\u4e3a\u94c1\u8def\u516c\u53f8\u7684\u5ba2\u6237\u670d\u52a1\u7cfb\u7edf\u7ed8\u5236\u7684\u4e0a\u4e0b\u6587\u6570\u636e\u6d41\u56fe\u3002\u5b83\u5305\u542b\u4e00\u4e2a\u8fc7\u7a0b\uff08\u5f62\u72b6\uff09\uff0c\u8868\u793a\u8981\u5efa\u6a21\u7684\u7cfb\u7edf\uff0c\u5728\u672c\u4f8b\u4e2d\u4e3a\u201c\u00a0<em class=\"markup--em markup--p-em\">CS \u7cfb\u7edf<\/em>\u201d\u3002\u5b83\u8fd8\u663e\u793a\u4e86\u5c06\u4e0e\u7cfb\u7edf\u4ea4\u4e92\u7684\u53c2\u4e0e\u8005\uff0c\u79f0\u4e3a\u5916\u90e8\u5b9e\u4f53\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u00a0\u00a0<em class=\"markup--em markup--p-em\">CS \u52a9\u624b<\/em>\u00a0\u548c\u00a0<em class=\"markup--em markup--p-em\">\u4e58\u5ba2<\/em>\u00a0\u662f\u4e0e\u7cfb\u7edf\u4ea4\u4e92\u7684\u4e24\u4e2a\u5b9e\u4f53\u3002\u5728\u6d41\u7a0b\u548c\u5916\u90e8\u5b9e\u4f53\u4e4b\u95f4\uff0c\u5b58\u5728\u6570\u636e\u6d41\uff08\u8fde\u63a5\u5668\uff09\uff0c\u8868\u660e\u5b9e\u4f53\u548c\u7cfb\u7edf\u4e4b\u95f4\u5b58\u5728\u4fe1\u606f\u4ea4\u6362\u3002<\/p>\n<figure id=\"06d3\" 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\/0zfUxDeKMy-91D4jJ.png\" data-image-id=\"0*zfUxDeKMy-91D4jJ.png\" data-width=\"567\" data-height=\"121\" \/><\/figure>\n<p id=\"844b\" class=\"graf graf--p graf-after--figure\"><a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=YourdonandCoadDiagram&amp;gallery=\/repository\/dd87bf2b-0fad-4f7e-8a58-d085c722a254.xml&amp;name=CS%20System%20Context%20DFD\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=YourdonandCoadDiagram&amp;gallery=\/repository\/dd87bf2b-0fad-4f7e-8a58-d085c722a254.xml&amp;name=CS%20System%20Context%20DFD\">\u7f16\u8f91\u6b64 Yourdon \u548c Coad DFD \u793a\u4f8b<\/a><\/p>\n<p id=\"3215\" class=\"graf graf--p graf-after--p\">\u4e0a\u4e0b\u6587 DFD \u662f\u6570\u636e\u6d41\u6a21\u578b\u7684\u5165\u53e3\u3002\u5b83\u5305\u542b\u4e00\u4e2a\u4e14\u53ea\u6709\u4e00\u4e2a\u8fdb\u7a0b\uff0c\u5e76\u4e14\u4e0d\u663e\u793a\u4efb\u4f55\u6570\u636e\u5b58\u50a8\u3002<\/p>\n<h3 id=\"1293\" class=\"graf graf--h3 graf-after--p\"><span id=\"Level_1_DFD\">1\u7ea7DFD<\/span><\/h3>\n<p id=\"1b45\" class=\"graf graf--p graf-after--h3\">\u4e0b\u56fe\u663e\u793a\u4e861\u7ea7DFD\uff0c\u5b83\u662f\u4e0a\u4e0b\u6587DFD\u4e2d\u663e\u793a\u7684CS System\u6d41\u7a0b\u7684\u5206\u89e3\uff08\u5373\u5206\u89e3\uff09\u3002\u901a\u8bfb\u8be5\u56fe\uff0c\u7136\u540e\u6211\u4eec\u5c06\u6839\u636e\u8be5\u56fe\u4ecb\u7ecd\u4e00\u4e9b\u5173\u952e\u6982\u5ff5\u3002<\/p>\n<figure id=\"b267\" 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\/009gCEUHhCzVfNZeE.png\" data-image-id=\"0*09gCEUHhCzVfNZeE.png\" data-width=\"695\" data-height=\"542\" \/><\/figure>\n<p id=\"f97e\" class=\"graf graf--p graf-after--figure\"><a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=YourdonandCoadDiagram&amp;gallery=\/repository\/d592ccb3-23ca-4bee-8ccb-c6f66e90f921.xml&amp;name=CS%20System%20Level%201%20DFD\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=YourdonandCoadDiagram&amp;gallery=\/repository\/d592ccb3-23ca-4bee-8ccb-c6f66e90f921.xml&amp;name=CS%20System%20Level%201%20DFD\">\u7f16\u8f91\u6b64 Yourdon \u548c Coad \u56fe\u793a\u4f8b<\/a><\/p>\n<p id=\"1903\" class=\"graf graf--p graf-after--p\">CS \u7cfb\u7edf\u6570\u636e\u6d41\u56fe\u793a\u4f8b\u5305\u542b\u56db\u4e2a\u8fdb\u7a0b\u3001\u4e24\u4e2a\u5916\u90e8\u5b9e\u4f53\u548c\u56db\u4e2a\u6570\u636e\u5b58\u50a8\u3002\u5c3d\u7ba1\u6ca1\u6709\u8bbe\u8ba1\u6307\u5357\u6765\u7ba1\u7406\u6570\u636e\u6d41\u56fe\u4e2d\u5f62\u72b6\u7684\u4f4d\u7f6e\uff0c\u4f46\u6211\u4eec\u503e\u5411\u4e8e\u5c06\u6d41\u7a0b\u653e\u5728\u4e2d\u95f4\uff0c\u5c06\u6570\u636e\u5b58\u50a8\u548c\u5916\u90e8\u5b9e\u4f53\u653e\u5728\u4e24\u4fa7\uff0c\u4ee5\u4fbf\u66f4\u5bb9\u6613\u7406\u89e3\u3002<\/p>\n<p id=\"1ad6\" class=\"graf graf--p graf-after--p\">\u7531\u56fe\u53ef\u77e5\uff0c\u00a0\u00a0<em class=\"markup--em markup--p-em\">Passenger<\/em>\u00a0\u53ef\u4ee5\u00a0\u00a0\u4ece\u00a0<em class=\"markup--em markup--p-em\">Inquiry Transport Details\u6d41\u7a0b\u4e2d\u63a5\u6536\u5230<\/em><em class=\"markup--em markup--p-em\">Transport \u8be6\u7ec6<\/em>\u4fe1\u606f\u00a0\uff0c\u8be6\u7ec6\u4fe1\u606f\u7531\u6570\u636e\u5b58\u50a8\u00a0<em class=\"markup--em markup--p-em\">Transport Details<\/em>\u00a0\u548c\u00a0<em class=\"markup--em markup--p-em\">Railway Live Statistic<\/em>\u63d0\u4f9b\u3002\u867d\u7136\u5b58\u50a8\u5728\u00a0<em class=\"markup--em markup--p-em\">\u8fd0\u8f93\u8be6\u7ec6\u4fe1\u606f<\/em>\u00a0\u4e2d\u7684\u6570\u636e\u662f\u6301\u4e45\u6570\u636e\uff08\u7531\u6807\u7b7e\u201cD\u201d\u8868\u793a\uff09\uff0c\u4f46\u5b58\u50a8\u5728\u00a0<em class=\"markup--em markup--p-em\">\u94c1\u8def\u5b9e\u65f6\u7edf\u8ba1<\/em>\u00a0\u4e2d\u7684\u6570\u636e\u662f\u77ed\u6682\u4fdd\u5b58\u7684\u6570\u636e\uff08\u7531\u6807\u7b7e\u201cT\u201d\u8868\u793a\uff09\u3002\u6807\u6ce8\u5f62\u72b6\u7528\u4e8e\u5217\u51fa\u4e58\u5ba2\u53ef\u4ee5\u67e5\u8be2\u7684\u8be6\u7ec6\u4fe1\u606f\u7c7b\u578b\u3002<\/p>\n<p id=\"ef88\" class=\"graf graf--p graf-after--p\"><em class=\"markup--em markup--p-em\">CS Assistant<\/em>\u00a0\u53ef\u4ee5\u542f\u52a8\u00a0<em class=\"markup--em markup--p-em\">\u8d2d\u4e70\u7eaa\u5ff5\u54c1<\/em>\u00a0\u6d41\u7a0b\uff0c\u8fd9\u5c06\u5bfc\u81f4\u5c06\u00a0<em class=\"markup--em markup--p-em\">\u8ba2\u5355\u8be6\u7ec6\u4fe1\u606f<\/em>\u00a0\u5b58\u50a8\u5728\u00a0<em class=\"markup--em markup--p-em\">\u8ba2\u5355<\/em>\u00a0\u6570\u636e\u5b58\u50a8\u4e2d\u3002\u867d\u7136\u5ba2\u6237\u662f\u8d2d\u4e70\u7eaa\u5ff5\u54c1\u7684\u771f\u5b9e\u4eba\uff0c\u4f46\u00a0\u00a0\u8bbf\u95ee\u7cfb\u7edf\u4ee5\u5b58\u50a8\u8ba2\u5355\u8be6\u7ec6\u4fe1\u606f\u7684\u662f<em class=\"markup--em markup--p-em\">CS\u52a9\u624b\u3002<\/em>\u56e0\u6b64\uff0c\u6211\u4eec\u5c06\u6570\u636e\u4ece\u00a0<em class=\"markup--em markup--p-em\">CS Assistant<\/em>\u00a0\u6d41\u5411\u00a0<em class=\"markup--em markup--p-em\">Buy Souvenir<\/em>\u00a0\u6d41\u7a0b\u3002<\/p>\n<p id=\"2dbd\" class=\"graf graf--p graf-after--p\"><em class=\"markup--em markup--p-em\">CS Assistant<\/em>\u8fd8\u53ef\u4ee5\u00a0\u901a\u8fc7\u63d0\u4f9b\u00a0<em class=\"markup--em markup--p-em\">\u8ba2\u5355\u8be6\u7ec6\u4fe1\u606f<\/em>\u00a0\u6765\u542f\u52a8\u00a0<em class=\"markup--em markup--p-em\">\u8d2d\u4e70\u7968<\/em>\u6d41\u7a0b\uff0c\u8be6\u7ec6\u00a0\u4fe1\u606f\u5c06\u518d\u6b21\u5b58\u50a8\u5728\u00a0<em class=\"markup--em markup--p-em\">\u8ba2\u5355<\/em>\u00a0\u6570\u636e\u5b58\u50a8\u4e2d\u3002\u6570\u636e\u6d41\u56fe\u662f\u4e00\u79cd\u9ad8\u5ea6\u62bd\u8c61\u7684\u9ad8\u7ea7\u56fe\u3002\u8fd9\u91cc\u7ed8\u5236\u7684\u6570\u636e\u5b58\u50a8Order\u5e76\u4e0d\u4e00\u5b9a\u610f\u5473\u7740\u771f\u5b9e\u7684\u8ba2\u5355\u6570\u636e\u5e93\u6216\u6570\u636e\u5e93\u4e2d\u7684\u8ba2\u5355\u8868\u3002\u8ba2\u5355\u8be6\u7ec6\u4fe1\u606f\u7684\u7269\u7406\u5b58\u50a8\u65b9\u5f0f\u5c06\u5728\u7a0d\u540e\u5b9e\u65bd\u7cfb\u7edf\u65f6\u51b3\u5b9a\u3002<\/p>\n<p id=\"0ddd\" class=\"graf graf--p graf-after--p\">\u6700\u540e\uff0c\u00a0\u00a0<em class=\"markup--em markup--p-em\">CS Assistant<\/em>\u53ef\u4ee5\u00a0\u901a\u8fc7\u63d0\u4f9b\u00a0<em class=\"markup--em markup--p-em\">\u4e8b\u4ef6\u548c\u7269\u54c1\u8be6\u7ec6<\/em>\u4fe1\u606f\u00a0\u6765\u542f\u52a8\u00a0<em class=\"markup--em markup--p-em\">\u62a5\u544a\u4e22\u5931<\/em>\u6d41\u7a0b\uff0c\u00a0\u5e76\u4e14\u4fe1\u606f\u5c06\u5b58\u50a8\u5728\u00a0<em class=\"markup--em markup--p-em\">\u4e22\u5931\u7269\u54c1<\/em>\u00a0\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n<h4 id=\"2092\" class=\"graf graf--h4 graf-after--p\"><span id=\"Learn_More_DFD_by_Examples\">\u901a\u8fc7\u793a\u4f8b\u4e86\u89e3\u66f4\u591a DFD<\/span><\/h4>\n<figure id=\"5725\" 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\/0x63SSpV2vU1_VAP0.png\" data-image-id=\"0*x63SSpV2vU1_VAP0.png\" data-width=\"653\" data-height=\"469\" \/><\/figure>\n<ul class=\"postList\">\n<li id=\"6dea\" class=\"graf graf--li graf-after--figure\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/8c2c19d0-cd9d-4e04-8192-ff0a8c6bea8c.xml&amp;name=Securities%20Trading%20Platform\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/8c2c19d0-cd9d-4e04-8192-ff0a8c6bea8c.xml&amp;name=Securities%20Trading%20Platform\">\u8bc1\u5238\u4ea4\u6613\u5e73\u53f0<\/a><\/li>\n<\/ul>\n<figure id=\"33d3\" 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\/0JI71dZxCO-DRk5Ru.png\" data-image-id=\"0*JI71dZxCO-DRk5Ru.png\" data-width=\"605\" data-height=\"422\" \/><\/figure>\n<ul class=\"postList\">\n<li id=\"52ca\" class=\"graf graf--li graf-after--figure\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/2e409d26-3345-4516-acde-c36b59fa3e0b.xml&amp;name=Food%20Ordering%20System\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/2e409d26-3345-4516-acde-c36b59fa3e0b.xml&amp;name=Food%20Ordering%20System\">\u70b9\u9910\u7cfb\u7edf<\/a><\/li>\n<\/ul>\n<figure id=\"e6ea\" 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\/0vCXwOxzj5Vl9hjDi.png\" data-image-id=\"0*vCXwOxzj5Vl9hjDi.png\" data-width=\"757\" data-height=\"529\" \/><\/figure>\n<ul class=\"postList\">\n<li id=\"618e\" class=\"graf graf--li graf-after--figure\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/6963afef-4946-42f3-9117-f089fa70cfc1.xml&amp;name=Customer%20Service%20System%20%28Railway%20Company%29\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/6963afef-4946-42f3-9117-f089fa70cfc1.xml&amp;name=Customer%20Service%20System%20%28Railway%20Company%29\">\u5ba2\u6237\u670d\u52a1\u7cfb\u7edf\uff08\u94c1\u8def\u516c\u53f8\uff09<\/a><\/li>\n<\/ul>\n<figure id=\"abe3\" 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\/0-FMnw-9ZR_ILv1wR.png\" data-image-id=\"0*-FMnw-9ZR_ILv1wR.png\" data-width=\"716\" data-height=\"560\" \/><\/figure>\n<ul class=\"postList\">\n<li id=\"27c9\" class=\"graf graf--li graf-after--figure\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/0640ff0f-f7f8-4327-a735-94b451a6fd88.xml&amp;name=Supermarket%20App\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/0640ff0f-f7f8-4327-a735-94b451a6fd88.xml&amp;name=Supermarket%20App\">\u8d85\u5e02\u5e94\u7528<\/a><\/li>\n<\/ul>\n<figure id=\"b1f8\" 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\/0nwUfOC7mhvxrRZDn.png\" data-image-id=\"0*nwUfOC7mhvxrRZDn.png\" data-width=\"637\" data-height=\"369\" \/><\/figure>\n<ul class=\"postList\">\n<li id=\"2044\" class=\"graf graf--li graf-after--figure graf--trailing\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/3f0b7361-8afd-463e-b1e2-e5a54d5207b3.xml&amp;name=Vehicle%20Maintenance%20Depot\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/3f0b7361-8afd-463e-b1e2-e5a54d5207b3.xml&amp;name=Vehicle%20Maintenance%20Depot\">\u6c7d\u8f66\u7ef4\u4fee\u5382<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u51b3\u590d\u6742\u95ee\u9898\u7684\u6709\u6548\u65b9\u6cd5\u4e4b\u4e00\u662f\u5c06\u5176\u5206\u89e3\u4e3a\u66f4\u7b80\u5355\u7684\u5b50\u95ee\u9898\u3002\u4f60\u9996\u5148\u8981\u628a\u6574\u4e2a\u4efb\u52a1\u5206\u89e3\u6210\u66f4\u7b80\u5355\u7684\u90e8\u5206\u3002\u9010\u6b65\u7ec6\u5316\u672c\u8d28\u4e0a\u662f\u5bf9\u7cfb\u7edf\u8fdb\u884c\u5206\u89e3\uff0c\u4ee5\u6df1\u5165\u4e86\u89e3\u6784\u6210\u7cfb\u7edf\u7684\u5b50\u7cfb\u7edf\uff0c\u8fd9\u88ab\u79f0\u4e3a\u81ea\u4e0a\u800c\u4e0b\u7684\u5206\u89e3\u65b9\u6cd5\u3002<\/p>\n","protected":false},"author":3,"featured_media":6154,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[13,5],"tags":[],"class_list":["post-6150","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-online-diagrams","category-software-engineering"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD - IT \u89c2\u5bdf\u8005\u968f\u7b14 - \u8d44\u8baf\u79d1\u6280\u535a\u5ba2<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD - IT \u89c2\u5bdf\u8005\u968f\u7b14 - \u8d44\u8baf\u79d1\u6280\u535a\u5ba2\" \/>\n<meta property=\"og:description\" content=\"\u89e3\u51b3\u590d\u6742\u95ee\u9898\u7684\u6709\u6548\u65b9\u6cd5\u4e4b\u4e00\u662f\u5c06\u5176\u5206\u89e3\u4e3a\u66f4\u7b80\u5355\u7684\u5b50\u95ee\u9898\u3002\u4f60\u9996\u5148\u8981\u628a\u6574\u4e2a\u4efb\u52a1\u5206\u89e3\u6210\u66f4\u7b80\u5355\u7684\u90e8\u5206\u3002\u9010\u6b65\u7ec6\u5316\u672c\u8d28\u4e0a\u662f\u5bf9\u7cfb\u7edf\u8fdb\u884c\u5206\u89e3\uff0c\u4ee5\u6df1\u5165\u4e86\u89e3\u6784\u6210\u7cfb\u7edf\u7684\u5b50\u7cfb\u7edf\uff0c\u8fd9\u88ab\u79f0\u4e3a\u81ea\u4e0a\u800c\u4e0b\u7684\u5206\u89e3\u65b9\u6cd5\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/\" \/>\n<meta property=\"og:site_name\" content=\"IT \u89c2\u5bdf\u8005\u968f\u7b14 - \u8d44\u8baf\u79d1\u6280\u535a\u5ba2\" \/>\n<meta property=\"article:published_time\" content=\"2022-02-15T05:26:09+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-07T01:28:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0qxK-mPAO_MWdNpr0.gif\" \/>\n<meta name=\"author\" content=\"vpvera\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0qxK-mPAO_MWdNpr0.gif\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"vpvera\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/\"},\"author\":{\"name\":\"vpvera\",\"@id\":\"https:\/\/www.cybermedian.com\/cn\/#\/schema\/person\/54a5a46528997d1917d55add9b0de7d5\"},\"headline\":\"\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD\",\"datePublished\":\"2022-02-15T05:26:09+00:00\",\"dateModified\":\"2025-03-07T01:28:33+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/\"},\"wordCount\":65,\"image\":{\"@id\":\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0qxK-mPAO_MWdNpr0.gif\",\"articleSection\":[\"Online Diagrams\",\"Software Engineering\"],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/\",\"url\":\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/\",\"name\":\"\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD - IT \u89c2\u5bdf\u8005\u968f\u7b14 - \u8d44\u8baf\u79d1\u6280\u535a\u5ba2\",\"isPartOf\":{\"@id\":\"https:\/\/www.cybermedian.com\/cn\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0qxK-mPAO_MWdNpr0.gif\",\"datePublished\":\"2022-02-15T05:26:09+00:00\",\"dateModified\":\"2025-03-07T01:28:33+00:00\",\"author\":{\"@id\":\"https:\/\/www.cybermedian.com\/cn\/#\/schema\/person\/54a5a46528997d1917d55add9b0de7d5\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#primaryimage\",\"url\":\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0qxK-mPAO_MWdNpr0.gif\",\"contentUrl\":\"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0qxK-mPAO_MWdNpr0.gif\",\"width\":\"432\",\"height\":\"293\",\"caption\":\"\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.cybermedian.com\/cn\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.cybermedian.com\/cn\/#website\",\"url\":\"https:\/\/www.cybermedian.com\/cn\/\",\"name\":\"IT \u89c2\u5bdf\u8005\u968f\u7b14 - \u8d44\u8baf\u79d1\u6280\u535a\u5ba2\",\"description\":\"\u805a\u7126\u8d44\u8baf\u79d1\u6280\u5185\u5bb9\u9886\u57df\u6700\u524d\u6cbf\u8d44\u8baf\uff0c\u7f51\u7edc\u7cbe\u534e\uff0c\u5fc3\u5f97\u4ea4\u6d41\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.cybermedian.com\/cn\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.cybermedian.com\/cn\/#\/schema\/person\/54a5a46528997d1917d55add9b0de7d5\",\"name\":\"vpvera\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.cybermedian.com\/cn\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/308f3b229618b77cd1764bf92dc496296ea49a0db7c1c881fa7c4f063b2b58da?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/308f3b229618b77cd1764bf92dc496296ea49a0db7c1c881fa7c4f063b2b58da?s=96&d=mm&r=g\",\"caption\":\"vpvera\"},\"url\":\"https:\/\/www.cybermedian.com\/cn\/author\/vpvera\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD - IT \u89c2\u5bdf\u8005\u968f\u7b14 - \u8d44\u8baf\u79d1\u6280\u535a\u5ba2","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/","og_locale":"zh_CN","og_type":"article","og_title":"\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD - IT \u89c2\u5bdf\u8005\u968f\u7b14 - \u8d44\u8baf\u79d1\u6280\u535a\u5ba2","og_description":"\u89e3\u51b3\u590d\u6742\u95ee\u9898\u7684\u6709\u6548\u65b9\u6cd5\u4e4b\u4e00\u662f\u5c06\u5176\u5206\u89e3\u4e3a\u66f4\u7b80\u5355\u7684\u5b50\u95ee\u9898\u3002\u4f60\u9996\u5148\u8981\u628a\u6574\u4e2a\u4efb\u52a1\u5206\u89e3\u6210\u66f4\u7b80\u5355\u7684\u90e8\u5206\u3002\u9010\u6b65\u7ec6\u5316\u672c\u8d28\u4e0a\u662f\u5bf9\u7cfb\u7edf\u8fdb\u884c\u5206\u89e3\uff0c\u4ee5\u6df1\u5165\u4e86\u89e3\u6784\u6210\u7cfb\u7edf\u7684\u5b50\u7cfb\u7edf\uff0c\u8fd9\u88ab\u79f0\u4e3a\u81ea\u4e0a\u800c\u4e0b\u7684\u5206\u89e3\u65b9\u6cd5\u3002","og_url":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/","og_site_name":"IT \u89c2\u5bdf\u8005\u968f\u7b14 - \u8d44\u8baf\u79d1\u6280\u535a\u5ba2","article_published_time":"2022-02-15T05:26:09+00:00","article_modified_time":"2025-03-07T01:28:33+00:00","og_image":[{"url":"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0qxK-mPAO_MWdNpr0.gif","type":"","width":"","height":""}],"author":"vpvera","twitter_card":"summary_large_image","twitter_image":"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0qxK-mPAO_MWdNpr0.gif","twitter_misc":{"\u4f5c\u8005":"vpvera"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#article","isPartOf":{"@id":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/"},"author":{"name":"vpvera","@id":"https:\/\/www.cybermedian.com\/cn\/#\/schema\/person\/54a5a46528997d1917d55add9b0de7d5"},"headline":"\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD","datePublished":"2022-02-15T05:26:09+00:00","dateModified":"2025-03-07T01:28:33+00:00","mainEntityOfPage":{"@id":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/"},"wordCount":65,"image":{"@id":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#primaryimage"},"thumbnailUrl":"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0qxK-mPAO_MWdNpr0.gif","articleSection":["Online Diagrams","Software Engineering"],"inLanguage":"zh-Hans"},{"@type":"WebPage","@id":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/","url":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/","name":"\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD - IT \u89c2\u5bdf\u8005\u968f\u7b14 - \u8d44\u8baf\u79d1\u6280\u535a\u5ba2","isPartOf":{"@id":"https:\/\/www.cybermedian.com\/cn\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#primaryimage"},"image":{"@id":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#primaryimage"},"thumbnailUrl":"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0qxK-mPAO_MWdNpr0.gif","datePublished":"2022-02-15T05:26:09+00:00","dateModified":"2025-03-07T01:28:33+00:00","author":{"@id":"https:\/\/www.cybermedian.com\/cn\/#\/schema\/person\/54a5a46528997d1917d55add9b0de7d5"},"breadcrumb":{"@id":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/"]}]},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#primaryimage","url":"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0qxK-mPAO_MWdNpr0.gif","contentUrl":"https:\/\/www.cybermedian.com\/cn\/wp-content\/uploads\/sites\/6\/2022\/01\/0qxK-mPAO_MWdNpr0.gif","width":"432","height":"293","caption":"\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD"},{"@type":"BreadcrumbList","@id":"https:\/\/www.cybermedian.com\/cn\/develop-dfd-with-stepwise-refinement\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.cybermedian.com\/cn\/"},{"@type":"ListItem","position":2,"name":"\u9010\u6b65\u7ec6\u5316\u5f00\u53d1 DFD"}]},{"@type":"WebSite","@id":"https:\/\/www.cybermedian.com\/cn\/#website","url":"https:\/\/www.cybermedian.com\/cn\/","name":"IT \u89c2\u5bdf\u8005\u968f\u7b14 - \u8d44\u8baf\u79d1\u6280\u535a\u5ba2","description":"\u805a\u7126\u8d44\u8baf\u79d1\u6280\u5185\u5bb9\u9886\u57df\u6700\u524d\u6cbf\u8d44\u8baf\uff0c\u7f51\u7edc\u7cbe\u534e\uff0c\u5fc3\u5f97\u4ea4\u6d41","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.cybermedian.com\/cn\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.cybermedian.com\/cn\/#\/schema\/person\/54a5a46528997d1917d55add9b0de7d5","name":"vpvera","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.cybermedian.com\/cn\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/308f3b229618b77cd1764bf92dc496296ea49a0db7c1c881fa7c4f063b2b58da?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/308f3b229618b77cd1764bf92dc496296ea49a0db7c1c881fa7c4f063b2b58da?s=96&d=mm&r=g","caption":"vpvera"},"url":"https:\/\/www.cybermedian.com\/cn\/author\/vpvera\/"}]}},"_links":{"self":[{"href":"https:\/\/www.cybermedian.com\/cn\/wp-json\/wp\/v2\/posts\/6150","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cybermedian.com\/cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cybermedian.com\/cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cybermedian.com\/cn\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cybermedian.com\/cn\/wp-json\/wp\/v2\/comments?post=6150"}],"version-history":[{"count":3,"href":"https:\/\/www.cybermedian.com\/cn\/wp-json\/wp\/v2\/posts\/6150\/revisions"}],"predecessor-version":[{"id":6153,"href":"https:\/\/www.cybermedian.com\/cn\/wp-json\/wp\/v2\/posts\/6150\/revisions\/6153"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cybermedian.com\/cn\/wp-json\/wp\/v2\/media\/6154"}],"wp:attachment":[{"href":"https:\/\/www.cybermedian.com\/cn\/wp-json\/wp\/v2\/media?parent=6150"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cybermedian.com\/cn\/wp-json\/wp\/v2\/categories?post=6150"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cybermedian.com\/cn\/wp-json\/wp\/v2\/tags?post=6150"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}