{"id":4166,"date":"2026-03-26T07:55:17","date_gmt":"2026-03-26T07:55:17","guid":{"rendered":"https:\/\/www.diagrams-ai.com\/ja\/hidden-power-dfds-software-requirements\/"},"modified":"2026-03-26T07:55:17","modified_gmt":"2026-03-26T07:55:17","slug":"hidden-power-dfds-software-requirements","status":"publish","type":"post","link":"https:\/\/www.diagrams-ai.com\/ja\/hidden-power-dfds-software-requirements\/","title":{"rendered":"\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u8981\u4ef6\u53ce\u96c6\u306b\u304a\u3051\u308bDFD\u306e\u96a0\u308c\u305f\u529b"},"content":{"rendered":"<p>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306f\u3001\u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u306e\u305f\u3081\u3067\u306f\u306a\u304f\u3001\u8aa4\u89e3\u3055\u308c\u305f\u8981\u4ef6\u306e\u305f\u3081\u3067\u3057\u3070\u3057\u3070\u9813\u632b\u3059\u308b\u3002\u30c1\u30fc\u30e0\u304c\u30c7\u30fc\u30bf\u306e\u6d41\u308c\u3092\u660e\u78ba\u306b\u628a\u63e1\u305b\u305a\u306b\u3001\u8a2d\u8a08\u3084\u958b\u767a\u306b\u76f4\u3061\u306b\u7740\u624b\u3059\u308b\u3068\u3001\u6280\u8853\u7684\u8ca0\u50b5\u3084\u7bc4\u56f2\u306e\u62e1\u5927\u304c\u751f\u3058\u308b\u3002\u3053\u3053\u306b\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0\uff08DFD\uff09\u306e\u4fa1\u5024\u304c\u73fe\u308c\u308b\u3002DFD\u306f\u3001\u30d3\u30b8\u30cd\u30b9\u95a2\u4fc2\u8005\u3068\u6280\u8853\u30a2\u30fc\u30ad\u30c6\u30af\u30c8\u306e\u9593\u306e\u6e9d\u3092\u57cb\u3081\u308b\u8996\u899a\u7684\u8a00\u8a9e\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0\u3068\u306f\u3001\u60c5\u5831\u30b7\u30b9\u30c6\u30e0\u5185\u3092\u6d41\u308c\u3066\u3044\u308b\u30c7\u30fc\u30bf\u306e\u6d41\u308c\u3092\u56f3\u5f0f\u5316\u3057\u305f\u3082\u306e\u3067\u3042\u308b\u3002\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u304c\u5236\u5fa1\u8ad6\u7406\u3084\u6c7a\u5b9a\u30dd\u30a4\u30f3\u30c8\u306b\u6ce8\u76ee\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001DFD\u306f\u60c5\u5831\u306e\u6d41\u308c\u306b\u6ce8\u76ee\u3059\u308b\u3002\u30c7\u30fc\u30bf\u304c\u30b7\u30b9\u30c6\u30e0\u306b\u5165\u529b\u3055\u308c\u308b\u65b9\u6cd5\u3001\u5909\u63db\u3055\u308c\u308b\u65b9\u6cd5\u3001\u3069\u3053\u306b\u4fdd\u5b58\u3055\u308c\u308b\u304b\u3001\u305d\u3057\u3066\u3069\u306e\u3088\u3046\u306b\u51fa\u529b\u3055\u308c\u308b\u304b\u3092\u793a\u3059\u3002\u8981\u4ef6\u53ce\u96c6\u306e\u6587\u8108\u306b\u304a\u3044\u3066\u3001\u3053\u306e\u9055\u3044\u306f\u6975\u3081\u3066\u91cd\u8981\u3067\u3042\u308b\u3002\u4f1a\u8a71\u306e\u7126\u70b9\u3092\u300c<em>\u30b7\u30b9\u30c6\u30e0\u304c\u4f55\u3092\u3059\u308b\u304b<\/em>\u300d\u304b\u3089\u300c<em>\u30b7\u30b9\u30c6\u30e0\u304c\u6271\u3046\u30c7\u30fc\u30bf\u306f\u4f55\u304b<\/em>.<\/p>\n<p>\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001DFD\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u3001\u5229\u70b9\u3001\u6226\u7565\u7684\u6d3b\u7528\u6cd5\u3092\u691c\u8a0e\u3059\u308b\u3002\u305d\u308c\u3089\u304c\u66d6\u6627\u3055\u3092\u660e\u78ba\u306b\u3057\u3001\u691c\u8a3c\u3092\u652f\u63f4\u3057\u3001\u6700\u7d42\u88fd\u54c1\u304c\u30d3\u30b8\u30cd\u30b9\u30cb\u30fc\u30ba\u3068\u4e00\u81f4\u3059\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u65b9\u6cd5\u3092\u691c\u8a3c\u3059\u308b\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Marker-style infographic explaining Data Flow Diagrams (DFDs) for software requirements gathering, illustrating core components (external entities, processes, data stores, data flows), hierarchical levels (Context\/Level 0, Level 1, Level 2), key benefits like visualizing data movement and traceability, common modeling pitfalls, and best practices for agile development teams\" decoding=\"async\" src=\"https:\/\/www.diagrams-ai.com\/wp-content\/uploads\/2026\/03\/dfd-requirements-gathering-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>DFD\u306e\u6838\u5fc3\u7684\u306a\u69cb\u6210\u8981\u7d20\u3092\u7406\u89e3\u3059\u308b 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DFD<\/h3>\n<p>\u3053\u3053\u3067\u306f\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306e\u5358\u4e00\u30d7\u30ed\u30bb\u30b9\u304c\u4e3b\u8981\u306a\u30b5\u30d6\u30d7\u30ed\u30bb\u30b9\u306b\u5206\u89e3\u3055\u308c\u308b\u3002\u3053\u306e\u30ec\u30d9\u30eb\u306b\u306f\u901a\u5e385\u301c9\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u542b\u307e\u308c\u308b\u3002\u30b7\u30b9\u30c6\u30e0\u306e\u4e3b\u8981\u306a\u6a5f\u80fd\u9818\u57df\u3092\u793a\u3059\u3002\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3084\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u542b\u3080\u304c\u3001\u7126\u70b9\u306f\u4e3b\u306a\u5909\u63db\u51e6\u7406\u306b\u3042\u308b\u3002<\/p>\n<h3>3. \u30ec\u30d9\u30eb2 DFD\u304a\u3088\u3073\u305d\u308c\u4ee5\u4e0a<\/h3>\n<p>\u30ec\u30d9\u30eb1\u306e\u5404\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u3055\u3089\u306b\u30ec\u30d9\u30eb2\u306e\u56f3\u306b\u5206\u89e3\u3067\u304d\u308b\u3002\u3053\u308c\u306f\u8907\u96d1\u306a\u8ad6\u7406\u306b\u6709\u7528\u3067\u3042\u308b\u3002\u305f\u3068\u3048\u3070\u3001\u300c\u652f\u6255\u3044\u51e6\u7406\u300d\u30d7\u30ed\u30bb\u30b9\u306f\u300c\u30ab\u30fc\u30c9\u691c\u8a3c\u300d\u300c\u30a2\u30ab\u30a6\u30f3\u30c8\u8acb\u6c42\u300d\u300c\u53f0\u5e33\u66f4\u65b0\u300d\u306b\u5206\u89e3\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308b\u3002\u30d7\u30ed\u30bb\u30b9\u304c\u5358\u4e00\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u307e\u305f\u306f\u95a2\u6570\u3068\u3057\u3066\u5b9f\u88c5\u53ef\u80fd\u306b\u306a\u308b\u307b\u3069\u5358\u7d14\u306b\u306a\u308b\u307e\u3067\u5206\u89e3\u3092\u7d9a\u3051\u308b\u3002<\/p>\n<h2>DFD\u306e\u4f5c\u6210\uff1a\u30b9\u30c6\u30c3\u30d7\u30d0\u30a4\u30b9\u30c6\u30c3\u30d7\u306e\u30a2\u30d7\u30ed\u30fc\u30c1 \ud83d\udee0\ufe0f<\/h2>\n<p>\u52b9\u679c\u7684\u306aDFD\u3092\u4f5c\u6210\u3059\u308b\u306b\u306f\u3001\u81ea\u5236\u5fc3\u304c\u5fc5\u8981\u3067\u3042\u308b\u3002\u7dda\u3092\u5f15\u304f\u3053\u3068\u3060\u3051\u3067\u306f\u306a\u304f\u3001\u8ad6\u7406\u3092\u6b63\u78ba\u306b\u6349\u3048\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3042\u308b\u3002\u54c1\u8cea\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u3001\u3053\u306e\u69cb\u9020\u5316\u3055\u308c\u305f\u30a2\u30d7\u30ed\u30fc\u30c1\u306b\u5f93\u3046\u3002<\/p>\n<ul>\n<li><strong>\u30b9\u30c6\u30c3\u30d71\uff1a\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u7279\u5b9a\u3059\u308b\uff1a<\/strong>\u30b7\u30b9\u30c6\u30e0\u3068\u3084\u308a\u53d6\u308a\u3059\u308b\u3001\u30b7\u30b9\u30c6\u30e0\u5916\u90e8\u306e\u3059\u3079\u3066\u306e\u4eba\u3084\u3082\u306e\u30ea\u30b9\u30c8\u30a2\u30c3\u30d7\u3059\u308b\u3002\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u306b\u5c0b\u306d\u308b\uff1a\u300c\u8ab0\u304c\u30b7\u30b9\u30c6\u30e0\u306b\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308b\u306e\u304b\uff1f\u8ab0\u304c\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d7\u3051\u53d6\u308b\u306e\u304b\uff1f\u300d<\/li>\n<li><strong>\u30b9\u30c6\u30c3\u30d72\uff1a\u30b7\u30b9\u30c6\u30e0\u5883\u754c\u3092\u5b9a\u7fa9\u3059\u308b\uff1a<\/strong>\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30bb\u30b9\u306e\u5468\u308a\u306b\u30dc\u30c3\u30af\u30b9\u3092\u63cf\u304f\u3002\u5185\u90e8\u306b\u3042\u308b\u3082\u306e\u306f\u3059\u3079\u3066\u81ea\u5206\u306e\u5236\u5fa1\u4e0b\u306b\u3042\u308b\u3002\u5916\u90e8\u306b\u3042\u308b\u3082\u306e\u306f\u5916\u90e8\u4f9d\u5b58\u3067\u3042\u308b\u3002<\/li>\n<li><strong>\u30b9\u30c6\u30c3\u30d73\uff1a\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3092\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b\uff1a<\/strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u304b\u3089\u30b7\u30b9\u30c6\u30e0\u3078\u30c7\u30fc\u30bf\u304c\u3069\u306e\u3088\u3046\u306b\u79fb\u52d5\u3059\u308b\u304b\u3092\u793a\u3059\u77e2\u5370\u3092\u63cf\u304f\u3002\u3059\u3079\u3066\u306e\u77e2\u5370\u306b\u3001\u30c7\u30fc\u30bf\u306e\u5185\u5bb9\u3092\u8aac\u660e\u3059\u308b\u30e9\u30d9\u30eb\u3092\u4ed8\u3051\u308b\u3053\u3068\u3002<\/li>\n<li><strong>\u30b9\u30c6\u30c3\u30d74\uff1a\u30d7\u30ed\u30bb\u30b9\u3092\u7279\u5b9a\u3059\u308b\uff1a<\/strong>\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u4f55\u304c\u8d77\u3053\u308b\u304b\u3092\u6c7a\u5b9a\u3059\u308b\u3002\u30c7\u30fc\u30bf\u304c\u5165\u529b\u3055\u308c\u3066\u3082\u4f55\u306e\u51e6\u7406\u3082\u884c\u308f\u308c\u306a\u3044\u5834\u5408\u306f\u3001DFD\u306e\u30eb\u30fc\u30eb\u9055\u53cd\u3067\u3042\u308b\u3002\u3059\u3079\u3066\u306e\u5165\u529b\u306f\u51fa\u529b\u307e\u305f\u306f\u4fdd\u5b58\u51e6\u7406\u3092\u3082\u305f\u3089\u3055\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/li>\n<li><strong>\u30b9\u30c6\u30c3\u30d75\uff1a\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3092\u7279\u5b9a\u3059\u308b\uff1a<\/strong>\u60c5\u5831\u304c\u8a18\u61b6\u3055\u308c\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u5834\u6240\u3092\u7279\u5b9a\u3059\u308b\u3002\u30d7\u30ed\u30bb\u30b9\u304c\u4ee5\u524d\u306e\u53d6\u5f15\u304b\u3089\u306e\u30c7\u30fc\u30bf\u3092\u5fc5\u8981\u3068\u3059\u308b\u5834\u5408\u3001\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u304c\u5fc5\u8981\u3068\u306a\u308b\u3002<\/li>\n<li><strong>\u30b9\u30c6\u30c3\u30d76\uff1a\u30d0\u30e9\u30f3\u30b9\u306e\u691c\u8a3c\uff1a<\/strong>\u89aa\u30d7\u30ed\u30bb\u30b9\u306e\u5165\u529b\u3068\u51fa\u529b\u304c\u3001\u305d\u306e\u5b50\u56f3\u306e\u5165\u529b\u3068\u51fa\u529b\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002\u3053\u308c\u3092\u30d0\u30e9\u30f3\u30b9\u3068\u547c\u3073\u3001\u4e00\u8cab\u6027\u3092\u4fdd\u3064\u305f\u3081\u306b\u91cd\u8981\u3067\u3042\u308b\u3002<\/li>\n<\/ul>\n<h2>DFD\u30e2\u30c7\u30ea\u30f3\u30b0\u306b\u304a\u3051\u308b\u4e00\u822c\u7684\u306a\u843d\u3068\u3057\u7a74 \u26a0\ufe0f<\/h2>\n<p>\u7d4c\u9a13\u8c4a\u5bcc\u306a\u30a2\u30ca\u30ea\u30b9\u30c8\u3067\u3059\u3089\u30df\u30b9\u3092\u3059\u308b\u3002\u3053\u308c\u3089\u306e\u8aa4\u308a\u3092\u65e9\u671f\u306b\u8a8d\u8b58\u3059\u308b\u3053\u3068\u3067\u3001\u958b\u767a\u30d5\u30a7\u30fc\u30ba\u3067\u306e\u6642\u9593\u3092\u5927\u5e45\u306b\u7bc0\u7d04\u3067\u304d\u308b\u3002\u4ee5\u4e0b\u306f\u3001\u8981\u4ef6\u30e2\u30c7\u30ea\u30f3\u30b0\u6642\u306b\u6700\u3082\u983b\u7e41\u306b\u906d\u9047\u3059\u308b\u554f\u984c\u3067\u3042\u308b\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u843d\u3068\u3057\u7a74<\/th>\n<th>\u8aac\u660e<\/th>\n<th>\u4fee\u6b63<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u30c7\u30fc\u30bf\u306e\u7a81\u7136\u767a\u751f<\/strong><\/td>\n<td>\u5165\u529b\u5143\u306e\u306a\u3044\u72b6\u614b\u3067\u30c7\u30fc\u30bf\u304c\u7a81\u7136\u51fa\u73fe\u3059\u308b\u3002<\/td>\n<td>\u3059\u3079\u3066\u306e\u77e2\u5370\u306f\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3001\u30d7\u30ed\u30bb\u30b9\u3001\u307e\u305f\u306f\u30b9\u30c8\u30a2\u304b\u3089\u51fa\u767a\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30c7\u30fc\u30bf\u306e\u7834\u68c4<\/strong><\/td>\n<td>\u30c7\u30fc\u30bf\u304c\u30d7\u30ed\u30bb\u30b9\u306b\u5165\u308a\u307e\u3059\u304c\u3001\u51fa\u529b\u3084\u4fdd\u5b58\u306a\u3057\u306b\u6d88\u3048\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/td>\n<td>\u3059\u3079\u3066\u306e\u5165\u529b\u304c\u610f\u5473\u306e\u3042\u308b\u51fa\u529b\u306b\u306a\u308b\u304b\u3001\u4fdd\u5b58\u3055\u308c\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u5236\u5fa1\u8ad6\u7406<\/strong><\/td>\n<td>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3067\u306f\u306a\u304f\u3001DFD\u3092\u4f7f\u3063\u3066\u6c7a\u5b9a\u8ad6\u7406\uff08if\/else\uff09\u3092\u793a\u3059\u3002<\/td>\n<td>\u8ad6\u7406\u5236\u5fa1\u306b\u306f\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u3001\u30c7\u30fc\u30bf\u79fb\u52d5\u306b\u306fDFD\u3092\u4f7f\u7528\u3059\u308b\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30d0\u30e9\u30f3\u30b9\u306e\u53d6\u308c\u3066\u3044\u306a\u3044\u56f3<\/strong><\/td>\n<td>\u5b50\u56f3\u306f\u89aa\u56f3\u3068\u7570\u306a\u308b\u5165\u529b\uff0f\u51fa\u529b\u3092\u6301\u3064\u3002<\/td>\n<td>\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u304c\u8003\u616e\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u3001\u5206\u89e3\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30b4\u30fc\u30b9\u30c8\u30d7\u30ed\u30bb\u30b9<\/strong><\/td>\n<td>\u30c7\u30fc\u30bf\u3092\u5909\u66f4\u305b\u305a\u3001\u4fdd\u5b58\u3082\u3057\u306a\u3044\u30d7\u30ed\u30bb\u30b9\u3002<\/td>\n<td>\u5909\u63db\u3092\u884c\u308f\u306a\u3044\u30d7\u30ed\u30bb\u30b9\u306f\u524a\u9664\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u9593\u76f4\u63a5\u30d5\u30ed\u30fc<\/strong><\/td>\n<td>\u30c7\u30fc\u30bf\u304c\u30b7\u30b9\u30c6\u30e0\u3092\u901a\u904e\u305b\u305a\u306b\u30012\u3064\u306e\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u9593\u3092\u6d41\u308c\u307e\u3059\u3002<\/td>\n<td>\u3053\u308c\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u7bc4\u56f2\u5916\u3067\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u306f\u3053\u306e\u76f8\u4e92\u4f5c\u7528\u3092\u51e6\u7406\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>DFD\u3068\u4ed6\u306e\u30e2\u30c7\u30ea\u30f3\u30b0\u6280\u6cd5\u3068\u306e\u6bd4\u8f03 \ud83d\udd04<\/h2>\n<p>DFD\u3092\u4ed6\u306e\u56f3\u793a\u624b\u6cd5\u3068\u6df7\u540c\u3059\u308b\u3053\u3068\u306f\u3088\u304f\u3042\u308a\u307e\u3059\u3002\u5404\u30c4\u30fc\u30eb\u306f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306b\u304a\u3044\u3066\u7279\u5b9a\u306e\u76ee\u7684\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002\u3069\u306e\u56f3\u3092\u3044\u3064\u4f7f\u3046\u304b\u3092\u77e5\u308b\u3053\u3068\u3067\u3001\u6df7\u4e71\u3092\u9632\u3052\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>DFD\u3068\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u306e\u6bd4\u8f03\uff1a<\/strong>\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u306f\u64cd\u4f5c\u306e\u9806\u5e8f\u3068\u5236\u5fa1\u30d5\u30ed\u30fc\uff08\u30eb\u30fc\u30d7\u3001\u6761\u4ef6\uff09\u306b\u6ce8\u76ee\u3057\u307e\u3059\u3002DFD\u306f\u30c7\u30fc\u30bf\u306e\u5909\u63db\u306b\u6ce8\u76ee\u3057\u307e\u3059\u3002\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u306f\u300c\u6b21\u306b\u4f55\u304c\u8d77\u3053\u308b\u304b\uff1f\u300d\u306b\u7b54\u3048\u308b\u306e\u306b\u5bfe\u3057\u3001DFD\u306f\u300c\u30c7\u30fc\u30bf\u306f\u3069\u3053\u306b\u884c\u304f\u304b\uff1f\u300d\u306b\u7b54\u3048\u308b\u3002<\/li>\n<li><strong>DFD\u3068UML\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u56f3\u306e\u6bd4\u8f03\uff1a<\/strong>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u56f3\u306f\u30e6\u30fc\u30b6\u30fc\u3068\u30b7\u30b9\u30c6\u30e0\u306e\u76f8\u4e92\u4f5c\u7528\u3092\u793a\u3057\u307e\u3059\u3002DFD\u306f\u30c7\u30fc\u30bf\u51e6\u7406\u306e\u5185\u90e8\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u793a\u3057\u307e\u3059\u3002\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306f\u300c\u8ab0\u304c\u4f55\u3092\u3059\u308b\u304b\u300d\u3092\u5b9a\u7fa9\u3057\u3001DFD\u306f\u300c\u30c7\u30fc\u30bf\u306f\u3069\u306e\u3088\u3046\u306b\u79fb\u52d5\u3059\u308b\u304b\u300d\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/li>\n<li><strong>DFD\u3068\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3\uff08ERD\uff09\u306e\u6bd4\u8f03\uff1a<\/strong>ERD\u306f\u30c7\u30fc\u30bf\u69cb\u9020\u3068\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff08\u30c6\u30fc\u30d6\u30eb\uff09\u9593\u306e\u95a2\u4fc2\u306b\u6ce8\u76ee\u3057\u307e\u3059\u3002DFD\u306f\u305d\u306e\u30c7\u30fc\u30bf\u306e\u79fb\u52d5\u3068\u5909\u63db\u306b\u6ce8\u76ee\u3057\u307e\u3059\u3002\u4e21\u65b9\u3092\u5fc5\u8981\u3068\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002ERD\u306f\u30b9\u30ad\u30fc\u30de\u3092\u5b9a\u7fa9\u3057\u3001DFD\u306f\u8ad6\u7406\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/li>\n<li><strong>DFD\u3068\u30b9\u30c6\u30fc\u30c8\u30de\u30b7\u30f3\u56f3\u306e\u6bd4\u8f03\uff1a<\/strong>\u30b9\u30c6\u30fc\u30c8\u30de\u30b7\u30f3\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\uff08\u4f8b\uff1a\u6ce8\u6587\u304c\u4fdd\u7559\u304b\u3089\u51fa\u8377\u6e08\u307f\u3078\u79fb\u884c\u3059\u308b\uff09\u3092\u8ffd\u8de1\u3057\u307e\u3059\u3002DFD\u306f\u305d\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u652f\u3048\u308b\u30c7\u30fc\u30bf\u3092\u8ffd\u8de1\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u88dc\u5b8c\u7684\u3067\u3059\u3002<\/li>\n<\/ul>\n<h2>DFD\u306e\u54c1\u8cea\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9 \ud83d\udee1\ufe0f<\/h2>\n<p>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u5168\u4f53\u3092\u901a\u3057\u3066\u56f3\u304c\u6709\u7528\u306a\u30a2\u30fc\u30c6\u30a3\u30d5\u30a1\u30af\u30c8\u306e\u307e\u307e\u4fdd\u305f\u308c\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3001\u3053\u308c\u3089\u306e\u57fa\u6e96\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u4e00\u8cab\u6027\u304c\u3001\u8981\u4ef6\u30e2\u30c7\u30eb\u306e\u6574\u5408\u6027\u3092\u7dad\u6301\u3059\u308b\u9375\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u4e00\u8cab\u3057\u305f\u547d\u540d\uff1a<\/strong>\u3059\u3079\u3066\u306e\u30ec\u30d9\u30eb\u3067\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u306b\u540c\u3058\u540d\u8a5e\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30ec\u30d9\u30eb0\u3067\u77e2\u5370\u304c\u300c\u6ce8\u6587\u8a73\u7d30\u300d\u3068\u30e9\u30d9\u30eb\u4ed8\u3051\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u30ec\u30d9\u30eb1\u3067\u3082\u300c\u6ce8\u6587\u8a73\u7d30\u300d\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u30c7\u30fc\u30bf\u69cb\u9020\u304c\u5909\u5316\u3057\u306a\u3044\u9650\u308a\u3001\u300c\u9867\u5ba2\u6ce8\u6587\u300d\u3084\u300c\u8cfc\u5165\u60c5\u5831\u300d\u3068\u3044\u3063\u305f\u540d\u524d\u3092\u5909\u66f4\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u30d7\u30ed\u30bb\u30b9\u6570\u306e\u5236\u9650\uff1a<\/strong>\u30ec\u30d9\u30eb1\u306e\u56f3\u306b\u304a\u3051\u308b\u5358\u4e00\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u5165\u529b\u3068\u51fa\u529b\u304c7\uff5e10\u500b\u3092\u8d85\u3048\u3066\u306f\u306a\u3089\u306a\u3044\u3002\u3082\u3057\u8d85\u3048\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u5e83\u3059\u304e\u308b\u3068\u8003\u3048\u3089\u308c\u3001\u3055\u3089\u306b\u5206\u89e3\u3059\u3079\u304d\u3067\u3042\u308b\u3002<\/li>\n<li><strong>\u77e2\u5370\u3092\u660e\u78ba\u306b\u4fdd\u3064\uff1a<\/strong>\u53ef\u80fd\u306a\u9650\u308a\u7dda\u306e\u4ea4\u5dee\u3092\u907f\u3051\u308b\u3002\u969c\u5bb3\u7269\u3092\u8d8a\u3048\u308b\u305f\u3081\u306b\u300c\u30b3\u30cd\u30af\u30bf\u300d\u3092\u4f7f\u7528\u3059\u308b\u3002\u76ee\u7684\u306f\u63a5\u7d9a\u6027\u3067\u306f\u306a\u304f\u3001\u53ef\u8aad\u6027\u3067\u3042\u308b\u3002<\/li>\n<li><strong>\u8272\u5206\u3051\uff1a<\/strong>\u30b9\u30bf\u30a4\u30eb\u306f\u6a5f\u80fd\u7684\u3067\u306f\u306a\u3044\u304c\u3001\u7570\u306a\u308b\u7a2e\u985e\u306e\u30d5\u30ed\u30fc\uff08\u4f8b\uff1a\u5165\u529b vs. \u51fa\u529b vs. \u30b9\u30c8\u30ec\u30fc\u30b8\uff09\u306b\u660e\u78ba\u306a\u8272\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u304c\u56f3\u3092\u7d20\u65e9\u304f\u7406\u89e3\u3067\u304d\u308b\u3002\u305f\u3060\u3057\u3001\u9ed2\u767d\u3067\u3082\u56f3\u304c\u8aad\u307f\u3084\u3059\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/li>\n<li><strong>\u30d0\u30fc\u30b8\u30e7\u30f3\u7ba1\u7406\uff1a<\/strong>DFD\u3092\u30b3\u30fc\u30c9\u306e\u3088\u3046\u306b\u6271\u3046\u3002\u30d0\u30fc\u30b8\u30e7\u30f3\u3001\u65e5\u4ed8\u3001\u4f5c\u6210\u8005\u3092\u8a18\u9332\u3059\u308b\u3002\u8981\u4ef6\u306f\u5909\u5316\u3059\u308b\u305f\u3081\u3001\u56f3\u3082\u305d\u306e\u5909\u5316\u3092\u6b63\u78ba\u306b\u53cd\u6620\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/li>\n<li><strong>\u6bb5\u968e\u7684\u691c\u8a3c\uff1a<\/strong>\u56f3\u304c\u5b8c\u74a7\u306b\u306a\u308b\u307e\u3067\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u306b\u898b\u305b\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u65e9\u671f\u306b\u30c9\u30e9\u30d5\u30c8\u3092\u63d0\u793a\u3059\u308b\u3002\u7dda\u3092\u6d88\u3059\u30b3\u30b9\u30c8\u306f\u3001\u30b3\u30fc\u30c9\u3092\u66f8\u304d\u76f4\u3059\u30b3\u30b9\u30c8\u3088\u308a\u306f\u308b\u304b\u306b\u4f4e\u3044\u3002<\/li>\n<\/ul>\n<h2>DFD\u304c\u30c8\u30ec\u30fc\u30b5\u30d3\u30ea\u30c6\u30a3\u306b\u304a\u3044\u3066\u679c\u305f\u3059\u5f79\u5272 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