{"id":8440,"date":"2022-01-26T01:52:04","date_gmt":"2022-01-26T01:52:04","guid":{"rendered":"https:\/\/www.cybermedian.com\/ja\/?p=8440"},"modified":"2026-04-20T09:13:12","modified_gmt":"2026-04-20T09:13:12","slug":"%e6%ae%b5%e9%9a%8e%e7%9a%84%e8%a9%b3%e7%b4%b0%e5%8c%96%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%a6dfd%e3%82%92%e9%96%8b%e7%99%ba%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/ja\/develop-dfd-with-stepwise-refinement\/","title":{"rendered":"\u6bb5\u968e\u7684\u8a73\u7d30\u5316\u3092\u4f7f\u7528\u3057\u3066DFD\u3092\u958b\u767a\u3059\u308b"},"content":{"rendered":"<ul class=\"postList\">\n<li id=\"2044\" class=\"graf graf--li graf-after--figure graf--trailing\">\n<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\" 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graf-after--p\">\u305f\u3068\u3048\u3070\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u6982\u8981\u306f\u00a0\u3001\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u306e\u4efb\u610f\u306e\u30ec\u30d9\u30eb\u3092\u6307\u5b9a\u3059\u308b\u304c\u6307\u5b9a\u3057\u306a\u3044<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\/\">\u30b7\u30b9\u30c6\u30e0\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u00a0\u3068\u3057\u3066\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002<\/a>\u6b21\u306b\u3001\u3053\u308c\u3089\u306e\u5404\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u4ed5\u69d8\u5168\u4f53\u304c\u57fa\u672c\u8981\u7d20\u306b\u7e2e\u5c0f\u3055\u308c\u308b\u307e\u3067\u3001\u591a\u304f\u306e\u8ffd\u52a0\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u30ec\u30d9\u30eb\u3067\u3001\u3088\u308a\u8a73\u7d30\u306b\uff08DFD\u306e\u30ec\u30d9\u30eb0\u30011\u30012\u306a\u3069\uff09\u6d17\u7df4\u3055\u308c\u307e\u3059\u3002<\/p>\n<p id=\"c0eb\" class=\"graf graf--p 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graf-after--p\">\u3053\u308c\u3089\u3092\u968e\u5c64\u7684\u306b\u914d\u7f6e\u3057\u307e\u3057\u3087\u3046\u3002\u3064\u307e\u308a\u3001\u3069\u306e\u30b9\u30c6\u30c3\u30d7\u304c\u5225\u306e\u30b9\u30c6\u30c3\u30d7\u306e\u4e00\u90e8\u3067\u3042\u308b\u304b\u3092\u7279\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u3092\u884c\u30461\u3064\u306e\u65b9\u6cd5\u306f\u3001\u5404\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u4e00\u9023\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u3068\u8003\u3048\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<h4 id=\"3e6e\" class=\"graf graf--h4 graf-after--p\"><span id=\"Stepwise_Refinement_Example\">\u6bb5\u968e\u7684\u8a73\u7d30\u5316\u306e\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\/ja\/wp-content\/uploads\/sites\/7\/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\">\u304d\u308c\u3044\u306a\u5bb6<\/em><\/strong><\/span><\/h4>\n<blockquote id=\"4d28\" class=\"graf graf--blockquote graf-after--h4\"><p>{\u771f\u7a7a\u30c0\u30a4\u30cb\u30f3\u30b0\u30eb\u30fc\u30e0\u3001\u7247\u4ed8\u3051\u306e\u30ea\u30d3\u30f3\u30b0\u30eb\u30fc\u30e0}<\/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\">\u6599\u7406<\/em><\/strong><\/span><\/h4>\n<blockquote id=\"7a12\" class=\"graf graf--blockquote graf-after--h4\"><p>{\u30ec\u30b7\u30d4\u3092\u9078\u629e\u3057\u3001\u6750\u6599\u3092\u8cfc\u5165\u3057\u3001\u30ed\u30fc\u30b9\u30c8\u30c1\u30ad\u30f3\u3002\u91ce\u83dc\u3092\u3084\u308b}<\/p><\/blockquote>\n<h4 id=\"c7f4\" class=\"graf graf--h4 graf-after--blockquote\"><span id=\"Set_Table\"><em class=\"markup--em markup--h4-em\">\u30bb\u30c3\u30c8\u30c6\u30fc\u30d6\u30eb<\/em><\/span><\/h4>\n<blockquote id=\"2932\" class=\"graf graf--blockquote graf-after--h4\"><p>{<em class=\"markup--em markup--blockquote-em\">\u30c6\u30fc\u30d6\u30eb\u30af\u30ed\u30b9\u3092\u63a2\u3059\u3001\u304a\u76bf\u3092\u51fa\u3059\u3001\u30ac\u30e9\u30b9\u88fd\u54c1\u3092\u51fa\u3059\u3001\u9280\u5668\u3092\u51fa\u3059\u3001\u30ca\u30d7\u30ad\u30f3<\/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\">\u30ed\u30fc\u30b9\u30c8\u30c1\u30ad\u30f3<\/em><\/span><\/h4>\n<blockquote id=\"ade9\" class=\"graf graf--blockquote graf-after--h4\"><p>{<em class=\"markup--em markup--blockquote-em\">\u30aa\u30fc\u30d6\u30f3\u3092\u00a0<\/em>400\u306b\u00a0\u4e88\u71b1\u3057\u3001<em class=\"markup--em markup--blockquote-em\">\u9d8f\u8089\u3092\u934b\u306b\u5165\u308c\u3001\u9d8f\u8089\u3092\u00a0<\/em>400\u00a0<em class=\"markup--em markup--blockquote-em\">\u30aa\u30fc\u30d6\u30f3\u306b\u00a0<\/em>90\u00a0<em class=\"markup--em markup--blockquote-em\">\u5206\u9593<\/em>\u7f6e\u304d\u307e\u3059}<\/p><\/blockquote>\n<h4 id=\"6e69\" class=\"graf graf--h4 graf-after--blockquote\"><span id=\"Do_Veggie\"><em class=\"markup--em markup--h4-em\">\u91ce\u83dc\u3092\u3059\u308b<\/em><\/span><\/h4>\n<blockquote id=\"1335\" class=\"graf graf--blockquote graf-after--h4\"><p>{<em class=\"markup--em markup--blockquote-em\">\u91ce\u83dc\u3092\u523b\u3080\u3001\u91ce\u83dc\u3092\u8abf\u7406\u3059\u308b<\/em>}<\/p><\/blockquote>\n<p id=\"0e0c\" class=\"graf graf--p graf-after--blockquote\">\uff08*\u51fa\u5178\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\">\u30c8\u30c3\u30d7\u30c0\u30a6\u30f3\u8a2d\u8a08\u3068\u6bb5\u968e\u7684\u6539\u826f\u2014 Wiki\u30d6\u30c3\u30af<\/a>\uff09<\/p>\n<p id=\"bc4f\" class=\"graf graf--p graf-after--p\">\u3053\u308c\u3089\u306e\u57fa\u672c\u7684\u306a\u8981\u7d20\u304c\u7279\u5b9a\u3055\u308c\u305f\u3089\u3001\u305d\u308c\u3089\u3092\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u7d44\u307f\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u308c\u3089\u304c\u69cb\u7bc9\u3055\u308c\u305f\u3089\u3001\u305d\u308c\u3089\u3092\u307e\u3068\u3081\u3066\u3001\u3053\u308c\u3089\u306e\u500b\u3005\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304b\u3089\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3 id=\"854f\" class=\"graf graf--h3 graf-after--p\"><span id=\"Top-Down_Decomposition_Technique_in_DFD\">DFD\u306e\u30c8\u30c3\u30d7\u30c0\u30a6\u30f3\u5206\u89e3\u624b\u6cd5<\/span><\/h3>\n<p id=\"167e\" class=\"graf graf--p graf-after--h3\">DFD\u3067\u306f\u3001\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\/\">\u30c8\u30c3\u30d7\u30c0\u30a6\u30f3\u5206\u89e3<\/a>\u00a0\uff08\u30ec\u30d9\u30ea\u30f3\u30b0\u307e\u305f\u306f\u6bb5\u968e\u7684\u8a73\u7d30\u5316\u3068\u3082\u547c\u3070\u308c\u307e\u3059\uff09\u306f\u3001\u4e0b\u4f4d\u30ec\u30d9\u30eb\u306eDFD\u3067\u3088\u308a\u8a73\u7d30\u306a\u60c5\u5831\u3092\u8868\u793a\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u624b\u6cd5\u3067\u3059\u3002\u30ec\u30d9\u30ea\u30f3\u30b0\u306f\u3001\u5fc5\u8981\u306a\u8a73\u7d30\u5ea6\u306b\u9054\u3059\u308b\u307e\u3067\u3001\u4e00\u9023\u306e\u307e\u3059\u307e\u3059\u8a73\u7d30\u306a\u56f3\u3092\u63cf\u753b\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u884c\u308f\u308c\u307e\u3059\u3002\u56f3\u306b\u793a\u3059\u3088\u3046\u306b\u3001DFD\u30ec\u30d9\u30ea\u30f3\u30b0\u306f\u3001\u6700\u521d\u306b\u30bf\u30fc\u30b2\u30c3\u30c8\u30b7\u30b9\u30c6\u30e0\u3092\u5358\u4e00\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u3057\u3066\u8868\u793a\u3057\u3001\u6b21\u306b\u3059\u3079\u3066\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u6a5f\u80fd\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u306b\u306a\u308b\u307e\u3067\u8a73\u7d30\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"6dc4\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/ja\/wp-content\/uploads\/sites\/7\/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\">\u3088\u308a\u9ad8\u3044\u30ec\u30d9\u30eb\u306eDFD\u306f\u8a73\u7d30\u5ea6\u304c\u4f4e\u3044<\/li>\n<li id=\"2991\" class=\"graf graf--li graf-after--li\">\u9ad8\u30ec\u30d9\u30eb\u306eDFD\u306f\u3001\u4f4e\u30ec\u30d9\u30eb\u3067\u3088\u308a\u8a73\u7d30\u306aDFD\u306b\u5206\u89e3\u3055\u308c\u307e\u3059\u3002<\/li>\n<li id=\"fa92\" class=\"graf graf--li graf-after--li\">\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306f\u968e\u5c64\u306e\u4e2d\u3067\u6700\u3082\u9ad8\u3044\u3082\u306e\u3067\u3059\uff08DFD\u4f5c\u6210\u30eb\u30fc\u30eb\u3092\u53c2\u7167\uff09\u3002\u3044\u308f\u3086\u308b\u30bc\u30ed\u30ec\u30d9\u30eb\u306e\u5f8c\u306b\u306f\u3001\u30d7\u30ed\u30bb\u30b9\u756a\u53f7\u4ed8\u3051\uff08EG\u3001\u30d7\u30ed\u30bb\u30b91\u3001\u30d7\u30ed\u30bb\u30b92\uff09\u304b\u3089\u59cb\u307e\u308bDFD0\u304c\u7d9a\u304d\u307e\u3059\u3002<\/li>\n<li id=\"b9b5\" class=\"graf graf--li graf-after--li\">\u6b21\u3067\u306f\u3001\u3044\u308f\u3086\u308b\u7b2c1\u30ec\u30d9\u30eb\u2014 DFD 1 \u2014\u756a\u53f7\u4ed8\u3051\u304c\u7d9a\u304d\u307e\u3059\u3002EG\u30d7\u30ed\u30bb\u30b91\u306f\u3001DFD\u306e\u6700\u521d\u306e3\u3064\u306e\u30ec\u30d9\u30eb\u306b\u5206\u3051\u3089\u308c\u30011.1\u30011.2\u3001\u304a\u3088\u30731.3\u306e\u756a\u53f7\u304c\u4ed8\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<li id=\"cadf\" class=\"graf graf--li graf-after--li\">\u540c\u69d8\u306b\u3001\u7b2c2\u30ec\u30d9\u30eb\uff08DFD 2\uff09\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u306f\u3001EG 1.1.1\u30011.1.2\u30011.1.3\u3001\u304a\u3088\u30731.1.4\u306e\u756a\u53f7\u304c\u4ed8\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<li id=\"fce7\" class=\"graf graf--li graf-after--li\">\u30ec\u30d9\u30eb\u306e\u6570\u306f\u3001\u30e2\u30c7\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u30b5\u30a4\u30ba\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u30ec\u30d9\u30eb0\u306e\u5404\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u540c\u3058\u6570\u306e\u5206\u89e3\u30ec\u30d9\u30eb\u3092\u6301\u305f\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3 id=\"a916\" class=\"graf graf--h3 graf-after--li\"><span id=\"DFD_Examples_Customer_Services_System_Example\">DFD\u306e\u4f8b\u2014\u30ab\u30b9\u30bf\u30de\u30fc\u30b5\u30fc\u30d3\u30b9\u30b7\u30b9\u30c6\u30e0\u306e\u4f8b<\/span><\/h3>\n<p id=\"ad47\" class=\"graf graf--p graf-after--h3\">\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306f\u3001\u4ee5\u4e0b\u3067\u69cb\u6210\u3055\u308c\u308b\u56f3\u306e\u968e\u5c64\u3067\u3059\u3002<\/p>\n<ol class=\"postList\">\n<li id=\"a743\" class=\"graf graf--li graf-after--p\">\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\uff08\u6982\u5ff5\u7684\u306b\u306f\u30ec\u30d9\u30eb\u30bc\u30ed\uff09<\/li>\n<li id=\"2a86\" class=\"graf graf--li graf-after--li\">\u30ec\u30d9\u30eb1DFD<\/li>\n<li id=\"210c\" class=\"graf graf--li graf-after--li\">\u307e\u305f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u8907\u96d1\u3055\u306b\u5fdc\u3058\u3066\u3001\u53ef\u80fd\u306a\u30ec\u30d9\u30eb2DFD\u304a\u3088\u3073\u3055\u3089\u306a\u308b\u30ec\u30d9\u30eb\u306e\u6a5f\u80fd\u5206\u89e3<\/li>\n<\/ol>\n<h3 id=\"0d08\" class=\"graf graf--h3 graf-after--li\"><span id=\"Context_DFD\">\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8DFD<\/span><\/h3>\n<p id=\"e943\" class=\"graf graf--p graf-after--h3\">\u6b21\u306e\u56f3\u306f\u3001\u9244\u9053\u4f1a\u793e\u306e\u9867\u5ba2\u30b5\u30fc\u30d3\u30b9\u30b7\u30b9\u30c6\u30e0\u7528\u306b\u63cf\u753b\u3055\u308c\u305f\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<em class=\"markup--em markup--p-em\">\u3053\u308c\u306b\u306f\u3001\u30e2\u30c7\u30eb\u5316\u3059\u308b\u30b7\u30b9\u30c6\u30e0\uff08\u3053\u306e\u5834\u5408\u306f\u300c CS\u30b7\u30b9\u30c6\u30e0<\/em>\u300d \uff09\u3092\u8868\u3059\u30d7\u30ed\u30bb\u30b9\uff08\u5f62\u72b6\uff09\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3068\u547c\u3070\u308c\u308b\u3001\u30b7\u30b9\u30c6\u30e0\u3068\u5bfe\u8a71\u3059\u308b\u53c2\u52a0\u8005\u3082\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001\u00a0\u00a0<em class=\"markup--em markup--p-em\">CSAssistant<\/em>\u00a0\u3068\u00a0<em class=\"markup--em markup--p-em\">Passenger<\/em>\u00a0\u304c\u30b7\u30b9\u30c6\u30e0\u3068\u5bfe\u8a71\u3059\u308b2\u3064\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3067\u3059\u3002\u30d7\u30ed\u30bb\u30b9\u3068\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u9593\u306b\u306f\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3068\u30b7\u30b9\u30c6\u30e0\u9593\u306e\u60c5\u5831\u4ea4\u63db\u306e\u5b58\u5728\u3092\u793a\u3059\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\uff08\u30b3\u30cd\u30af\u30bf\uff09\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"06d3\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/ja\/wp-content\/uploads\/sites\/7\/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\">\u3053\u306eYourdonand CoadDFD\u306e\u4f8b\u3092\u7de8\u96c6\u3059\u308b<\/a><\/p>\n<p id=\"3215\" class=\"graf graf--p graf-after--p\">\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8DFD\u306f\u3001\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u30e2\u30c7\u30eb\u306e\u5165\u308a\u53e3\u3067\u3059\u3002\u30d7\u30ed\u30bb\u30b9\u306f1\u3064\u3060\u3051\u3067\u3001\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306f\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n<h3 id=\"1293\" class=\"graf graf--h3 graf-after--p\"><span id=\"Level_1_DFD\">\u30ec\u30d9\u30eb1DFD<\/span><\/h3>\n<p id=\"1b45\" class=\"graf graf--p graf-after--h3\">\u6b21\u306e\u56f3\u306f\u3001\u30ec\u30d9\u30eb1\u306eDFD\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8DFD\u306b\u793a\u3055\u308c\u3066\u3044\u308bCS\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30bb\u30b9\u306e\u5206\u89e3\uff08\u3064\u307e\u308a\u3001\u5185\u8a33\uff09\u3067\u3059\u3002\u56f3\u3092\u8aad\u3093\u3067\u304b\u3089\u3001\u3053\u306e\u56f3\u306b\u57fa\u3065\u3044\u305f\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u6982\u5ff5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"b267\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/ja\/wp-content\/uploads\/sites\/7\/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\">\u3053\u306eYourdon\u3068Coad\u306e\u56f3\u306e\u4f8b\u3092\u7de8\u96c6\u3059\u308b<\/a><\/p>\n<p id=\"1903\" class=\"graf graf--p graf-after--p\">CS\u30b7\u30b9\u30c6\u30e0\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306e\u4f8b\u306b\u306f\u30014\u3064\u306e\u30d7\u30ed\u30bb\u30b9\u30012\u3064\u306e\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3001\u304a\u3088\u30734\u3064\u306e\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u3067\u306e\u5f62\u72b6\u306e\u914d\u7f6e\u3092\u7ba1\u7406\u3059\u308b\u8a2d\u8a08\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u7406\u89e3\u3057\u3084\u3059\u3044\u3088\u3046\u306b\u3001\u30d7\u30ed\u30bb\u30b9\u3092\u4e2d\u592e\u306b\u914d\u7f6e\u3057\u3001\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3068\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u5074\u9762\u306b\u914d\u7f6e\u3059\u308b\u50be\u5411\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p id=\"1ad6\" class=\"graf graf--p graf-after--p\">\u3053\u306e\u56f3\u306b\u57fa\u3065\u3044\u3066\u3001\u00a0<em class=\"markup--em markup--p-em\">\u4e57\u5ba2\u306f<\/em><em class=\"markup--em markup--p-em\">Inquiry Transport Details<\/em>\u00a0\u30d7\u30ed\u30bb\u30b9\u00a0\u00a0\u304b\u3089\u00a0<em class=\"markup--em markup--p-em\">\u8f38\u9001\u306e\u8a73\u7d30<\/em>\u00a0\u3092\u53d7\u3051\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u00a0\u3001\u8a73\u7d30\u306f\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306e<em class=\"markup--em markup--p-em\">TransportDetails<\/em>\u00a0\u3068\u00a0<em class=\"markup--em markup--p-em\">RailwayLiveStatistic<\/em>\u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u307e\u3059\u3002<em class=\"markup--em markup--p-em\">Transport Details<\/em>\u306b\u4fdd\u5b58\u3055\u308c\u305f\u00a0\u00a0\u30c7\u30fc\u30bf\u306f\u6c38\u7d9a\u30c7\u30fc\u30bf\uff08\u30e9\u30d9\u30eb\u300cD\u300d\u3067\u793a\u3055\u308c\u307e\u3059\uff09\u3067\u3059\u304c\u3001\u00a0\u00a0<em class=\"markup--em markup--p-em\">Railway Live Statistic<\/em>\u306b\u4fdd\u5b58\u3055\u308c\u305f\u00a0\u30c7\u30fc\u30bf\u306f\u77ed\u6642\u9593\u4fdd\u6301\u3055\u308c\u308b\u4e00\u6642\u30c7\u30fc\u30bf\u3067\u3059\uff08\u30e9\u30d9\u30eb\u300cT\u300d\u3067\u793a\u3055\u308c\u307e\u3059\uff09\u3002\u30b3\u30fc\u30eb\u30a2\u30a6\u30c8\u5f62\u72b6\u306f\u3001\u4e57\u5ba2\u304c\u554f\u3044\u5408\u308f\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u8a73\u7d30\u306e\u7a2e\u985e\u3092\u30ea\u30b9\u30c8\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p id=\"ef88\" class=\"graf graf--p graf-after--p\"><em class=\"markup--em markup--p-em\">CS Assistant\u306f\u3001<\/em><em class=\"markup--em markup--p-em\">\u304a\u571f\u7523<\/em>\u00a0\u306e\u8cfc\u5165\u30d7\u30ed\u30bb\u30b9\u3092\u958b\u59cb\u3067\u304d\u00a0\u00a0\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u00a0<em class=\"markup--em markup--p-em\">\u6ce8\u6587\u306e\u8a73\u7d30\u304c<\/em><em class=\"markup--em markup--p-em\">\u6ce8\u6587<\/em>\u00a0\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u00a0\u306b\u4fdd\u5b58\u3055\u308c\u00a0\u307e\u3059\u3002\u304a\u571f\u7523\u3092\u8cb7\u3046\u306e\u306f\u5b9f\u5728\u306e\u9867\u5ba2\u3067\u3059\u304c\u00a0\u00a0\u3001\u6ce8\u6587\u5185\u5bb9\u3092\u4fdd\u5b58\u3059\u308b\u305f\u3081\u306b\u30b7\u30b9\u30c6\u30e0\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u306e\u306f<em class=\"markup--em markup--p-em\">CS\u30a2\u30b7\u30b9\u30bf\u30f3\u30c8\u3067\u3059\u3002<\/em>\u3057\u305f\u304c\u3063\u3066\u3001\u00a0\u00a0<em class=\"markup--em markup--p-em\">CS\u30a2\u30b7\u30b9\u30bf\u30f3\u30c8<\/em>\u00a0\u304b\u3089\u00a0<em class=\"markup--em markup--p-em\">\u304a\u571f\u7523\u306e\u8cfc\u5165<\/em>\u00a0\u30d7\u30ed\u30bb\u30b9\u3078\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<p id=\"2dbd\" class=\"graf graf--p graf-after--p\"><em class=\"markup--em markup--p-em\">CS Assistant\u306f\u3001<\/em><em class=\"markup--em markup--p-em\">\u6ce8\u6587\u306e\u8a73\u7d30<\/em>\u3092\u00a0\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067\u00a0<em class=\"markup--em markup--p-em\">\u30c1\u30b1\u30c3\u30c8<\/em>\u00a0\u306e\u8cfc\u5165\u30d7\u30ed\u30bb\u30b9\u3092\u958b\u59cb\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u00a0\u3001\u8a73\u7d30\u306f<em class=\"markup--em markup--p-em\">\u6ce8\u6587<\/em>\u00a0\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u00a0\u306b\u518d\u5ea6\u4fdd\u5b58\u3055\u308c\u00a0\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306f\u3001\u9ad8\u5ea6\u306a\u62bd\u8c61\u5316\u3067\u63cf\u753b\u3055\u308c\u308b\u9ad8\u30ec\u30d9\u30eb\u306e\u56f3\u3067\u3059\u3002\u3053\u3053\u3067\u63cf\u753b\u3055\u308c\u308b\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2Order\u306f\u3001\u5fc5\u305a\u3057\u3082\u5b9f\u969b\u306e\u6ce8\u6587\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u307e\u305f\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5185\u306e\u6ce8\u6587\u30c6\u30fc\u30d6\u30eb\u3092\u610f\u5473\u3059\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u6ce8\u6587\u306e\u8a73\u7d30\u3092\u7269\u7406\u7684\u306b\u4fdd\u5b58\u3059\u308b\u65b9\u6cd5\u306f\u3001\u5f8c\u3067\u30b7\u30b9\u30c6\u30e0\u3092\u5b9f\u88c5\u3059\u308b\u3068\u304d\u306b\u6c7a\u5b9a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p id=\"0ddd\" class=\"graf graf--p graf-after--p\">\u6700\u5f8c\u306b\u3001\u00a0\u00a0<em class=\"markup--em markup--p-em\">CS Assistant\u306f\u3001<\/em><em class=\"markup--em markup--p-em\">\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u3068\u30a2\u30a4\u30c6\u30e0\u306e\u8a73\u7d30\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067<\/em><em class=\"markup--em markup--p-em\">\u7d1b\u5931\u30ec\u30dd\u30fc\u30c8<\/em>\u00a0\u30d7\u30ed\u30bb\u30b9\u00a0\u00a0\u3092\u958b\u59cb\u3067\u304d\u00a0\u3001\u60c5\u5831\u306f<em class=\"markup--em markup--p-em\">\u7d1b\u5931\u30a2\u30a4\u30c6\u30e0<\/em>\u00a0\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u00a0\u306b\u4fdd\u5b58\u3055\u308c\u00a0\u307e\u3059\u3002<\/p>\n<h4 id=\"2092\" class=\"graf graf--h4 graf-after--p\"><span id=\"Learn_More_DFD_by_Examples\">\u4f8b\u306b\u3088\u308bDFD\u306e\u8a73\u7d30<\/span><\/h4>\n<figure id=\"5725\" class=\"graf graf--figure graf-after--h4\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/ja\/wp-content\/uploads\/sites\/7\/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\">\u8a3c\u5238\u53d6\u5f15\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0<\/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\/ja\/wp-content\/uploads\/sites\/7\/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\">\u98df\u54c1\u6ce8\u6587\u30b7\u30b9\u30c6\u30e0<\/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\/ja\/wp-content\/uploads\/sites\/7\/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\">\u30ab\u30b9\u30bf\u30de\u30fc\u30b5\u30fc\u30d3\u30b9\u30b7\u30b9\u30c6\u30e0\uff08\u9244\u9053\u4f1a\u793e\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\/ja\/wp-content\/uploads\/sites\/7\/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\">\u30b9\u30fc\u30d1\u30fc\u30de\u30fc\u30b1\u30c3\u30c8\u30a2\u30d7\u30ea<\/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\/ja\/wp-content\/uploads\/sites\/7\/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\">\u8eca\u4e21\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u30c7\u30dd<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u8907\u96d1\u306a\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u6709\u52b9\u306a\u65b9\u6cd5\u306e\u3072\u3068\u3064\u306b\u3001\u3088\u308a\u5358\u7d14\u306a\u30b5\u30d6\u554f\u984c\u306b\u5206\u89e3\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305a\u3001\u8ab2\u984c\u5168\u4f53\u3092\u3088\u308a\u5358\u7d14\u306a\u30d1\u30fc\u30c4\u306b\u5206\u89e3\u3059\u308b\u3053\u3068\u304b\u3089\u59cb\u3081\u308b\u306e\u3067\u3059\u3002\u30b9\u30c6\u30c3\u30d7\u30d0\u30a4\u30b9\u30c6\u30c3\u30d7\u306e\u7d5e\u308a\u8fbc\u307f\u306f\u3001\u57fa\u672c\u7684\u306b\u30b7\u30b9\u30c6\u30e0\u3092\u5206\u89e3\u3057\u3066\u3001\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u6210\u3059\u308b\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u3092\u6d1e\u5bdf\u3059\u308b\u3082\u306e\u3067\u3001\u30c8\u30c3\u30d7\u30c0\u30a6\u30f3\u5206\u89e3\u6cd5\u3068\u547c\u3070\u308c\u308b\u3002<\/p>\n","protected":false},"author":4,"featured_media":8447,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[13,5],"tags":[],"class_list":["post-8440","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-online-diagrams","category-software-engineering"],"yoast_head":"<!-- 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