{"id":9161,"date":"2022-03-01T01:34:52","date_gmt":"2022-03-01T01:34:52","guid":{"rendered":"https:\/\/www.cybermedian.com\/ja\/?p=9161"},"modified":"2026-04-20T09:11:50","modified_gmt":"2026-04-20T09:11:50","slug":"%e3%83%87%e3%83%bc%e3%82%bf%e3%83%95%e3%83%ad%e3%83%bc%e5%9b%b3-%e5%8c%85%e6%8b%ac%e7%9a%84%e3%81%aa%e3%83%81%e3%83%a5%e3%83%bc%e3%83%88%e3%83%aa%e3%82%a2%e3%83%ab","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/ja\/data-flow-diagram-a-comprehensive-tutorial\/","title":{"rendered":"\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u2013\u5305\u62ec\u7684\u306a\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb"},"content":{"rendered":"<div class=\"entry-content clearfix\">\n<h3><span id=\"What_is_a_Data_Flow_Diagram\"><span class=\"\">\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/span><\/span><\/h3>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/tutorials\/data-flow-diagram-dfd.jsp\">\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3<\/a>\u306f\u3001\u60c5\u5831\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u30c7\u30fc\u30bf\u306e\u6d41\u308c\u3092\u30b0\u30e9\u30d5\u30a3\u30ab\u30eb\u306b\u8868\u73fe\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u7740\u4fe1\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3001\u767a\u4fe1\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3001\u304a\u3088\u3073\u4fdd\u5b58\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002DFD\u306f\u3001\u30c7\u30fc\u30bf\u304c\u30b7\u30b9\u30c6\u30e0\u3092\u3069\u306e\u3088\u3046\u306b\u6d41\u308c\u308b\u304b\u306b\u3064\u3044\u3066\u306f\u8a00\u53ca\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\">DFD\u624b\u6cd5<\/a>\u306f\u3001\u9ad8\u30ec\u30d9\u30eb\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u3092\u4e00\u9023\u306e\u3088\u308a\u8a73\u7d30\u306a\u56f3\u306b\u5206\u89e3\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u5168\u4f53\u50cf\u3068\u3001\u3088\u308a\u8a73\u7d30\u306a\u5206\u89e3\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u5168\u4f53\u50cf\u3001\u304a\u3088\u3073\u3088\u308a\u8a73\u7d30\u306a\u5206\u89e3\u3068\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u660e\u78ba\u5316\u3068\u7406\u89e3\u3092\u5bb9\u6613\u306b\u3059\u308b\u305f\u3081\u306e\u500b\u3005\u306e\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306e\u3088\u308a\u8a73\u7d30\u306a\u5185\u8a33\u3068\u8aac\u660e\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u7d50\u679c\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u7bc4\u56f2\u3068\u5883\u754c\u304c\u56f3\u306b\u660e\u78ba\u306b\u793a\u3055\u308c\u307e\u3059\u3002\u5341\u5206\u306b\u958b\u767a\u3055\u308c\u305fDFD\u306e\u6700\u7d42\u7d50\u679c\u306f\u3001\u5404\u30ec\u30d9\u30eb\u3067\u4f55\u304c\u8d77\u3053\u3063\u3066\u3044\u308b\u304b\u3092\u793a\u3059\u300c\u5168\u4f53\u50cf\u300d\u3067\u3059\u3002<\/p>\n<h3><span id=\"Why_DFD\">\u306a\u305cDFD\u306a\u306e\u304b\uff1f<\/span><\/h3>\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Data-flow_diagram\">\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3<\/a><br \/>\n\u306f\u3001 \u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306e\u5c02\u9580\u5bb6\u3068\u975e\u5c02\u9580\u5bb6\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u540c\u69d8\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u306e\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u8868\u73fe\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u8996\u899a\u5316\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u305f\u3081\u3001\u975e\u5e38\u306b\u7406\u89e3\u3057\u3084\u3059\u3044\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u8868\u73fe\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e\u30e2\u30c7\u30eb\u306b\u3088\u308a\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a8\u30f3\u30b8\u30cb\u30a2\u3001\u9867\u5ba2\u3001\u304a\u3088\u3073\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u8981\u4ef6\u306e\u5206\u6790\u304a\u3088\u3073\u4ed5\u69d8\u4f5c\u6210\u4e2d\u306b\u52b9\u679c\u7684\u306b\u9023\u643a\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306f\u3001\u304a\u5ba2\u69d8\u304c\u30e2\u30c7\u30ea\u30f3\u30b0\u624b\u6cd5\u3068\u69cb\u6210\u3092\u7406\u89e3\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u304c\u3001\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u30e2\u30c7\u30ea\u30f3\u30b0\u3067\u306f\u3001\u9650\u3089\u308c\u305f\u69cb\u6210\u306e\u30bb\u30c3\u30c8\u306e\u307f\u304c\u4f7f\u7528\u3055\u308c\u3001\u9069\u7528\u3055\u308c\u308b\u30eb\u30fc\u30eb\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u5f93\u3046\u306e\u304c\u7c21\u5358\u306b\u306a\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>DFD\u624b\u6cd5\u306e\u5229\u70b9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u3053\u308c\u306f\u3001\u7406\u89e3\u3057\u3084\u3059\u3044\u5358\u7d14\u306a\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u624b\u6cd5\u3067\u3059\u3002<\/li>\n<li>\u305d\u308c\u306f\u3001\u6280\u8853\u7684\u304a\u3088\u3073\u975e\u6280\u8853\u7684\u306a\u8074\u8846\u306b\u3088\u3063\u3066\u3088\u308a\u7c21\u5358\u306b\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u30b7\u30b9\u30c6\u30e0\u306e\u5883\u754c\u3092\u8aac\u660e\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n<li>\u3053\u308c\u306b\u3088\u308a\u3001\u65e2\u5b58\u306e\u30b7\u30b9\u30c6\u30e0\u77e5\u8b58\u3092\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u306b\u4f1d\u9054\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u3053\u308c\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u8a73\u7d30\u306a\u8868\u73fe\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n<li>\u3053\u308c\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u4e00\u90e8\u3068\u3057\u3066\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3><span id=\"DFD_vs_Flowchart\">DFD\u3068\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8<\/span><\/h3>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/tutorials\/flowchart-tutorial\/\">DFD\u3068\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8<\/a>\u306b\u306f\u5927\u304d\u306a\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002\u57fa\u672c\u7684\u306b\u3001DFD\u306f\u30c7\u30fc\u30bf\u306e\u6d41\u308c\u3092\u793a\u3057\u307e\u3059\u3002\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u306f\u3001\u5236\u5fa1\u306e\u6d41\u308c\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u30e2\u30b8\u30e5\u30fc\u30eb\u5185\u306e\u5236\u5fa1\u306e\u6d41\u308c\u3092\u8aac\u660e\u3057\u3001\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306e\u624b\u9806\u3092\u8aac\u660e\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n<li>DFD\u306f\u3001\u5165\u529b\u3001\u51fa\u529b\u3001\u30c7\u30fc\u30bf\u304c\u30b7\u30b9\u30c6\u30e0\u5185\u3092\u3069\u306e\u3088\u3046\u306b\u6d41\u308c\u308b\u304b\u3001\u304a\u3088\u3073\u30c7\u30fc\u30bf\u304c\u3069\u3053\u306b\u4fdd\u5b58\u3055\u308c\u308b\u304b\u3092\u793a\u3057\u307e\u3059\u3002\u5236\u5fa1\u8981\u7d20\u3084\u5206\u5c90\u8981\u7d20\u306f\u542b\u307e\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<h3><span id=\"Elements_of_DFD\">DFD\u306e\u8981\u7d20<\/span><\/h3>\n<ul>\n<li><strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3<\/strong>\u2013\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u60c5\u5831\u30c7\u30fc\u30bf\u306e\u30bd\u30fc\u30b9\u3068\u5b9b\u5148\u3067\u3059\u3002\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u9577\u65b9\u5f62\u3067\u8868\u3055\u308c<br \/>\n\u3001\u72ec\u81ea\u306e\u540d\u524d\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/01___notation_external_entity.png\" alt=\"\u8868\u8a18\uff08\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff09\" \/><\/p>\n<ul>\n<li><strong>\u30d7\u30ed\u30bb\u30b9<\/strong>\u2013\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u5b9f\u884c\u3055\u308c\u308b\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3068\u30a2\u30af\u30b7\u30e7\u30f3\u306f\u3001\u5186\u5f62\u307e\u305f\u306f\u5186\u5f62\u306e\u9577\u65b9\u5f62\u3067\u8868\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/02___notation_process.png\" alt=\"\u8868\u8a18\uff08\u30d7\u30ed\u30bb\u30b9\uff09\" \/><\/p>\n<ul>\n<li><strong>\u30c7\u30fc\u30bf\u30b9\u30c8\u30ec\u30fc\u30b8<\/strong>\u2013\u30c7\u30fc\u30bf\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u306f2\u3064\u306e\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u304c\u3042\u308a\u307e\u3059\u2013 1\u3068\u3057\u3066\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u30021\u30022\u3064\u306e\u5c0f\u3055\u306a\u30a8\u30c3\u30b8\u306e\u306a\u3044\u9577\u65b9\u5f62\u30012\uff09\u307e\u305f\u306f1\u3064\u306e\u30a8\u30c3\u30b8\u306e\u307f\u306e\u958b\u3044\u305f\u9577\u65b9\u5f62\u3068\u3057\u3066\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30a8\u30c3\u30b8<br \/>\n\u306e\u306a\u3044\u958b\u3044\u305f\u9577\u65b9\u5f62\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/03___notation_data_store.png\" alt=\"\u8868\u8a18\uff08\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\uff09\" \/><\/p>\n<ul>\n<li><strong>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc<\/strong>\u2013\u30c7\u30fc\u30bf\u306e\u79fb\u52d5\u306f\u92ed\u3044\u77e2\u5370\u3067\u8868\u3055\u308c\u307e\u3059\u3002\u30c7\u30fc\u30bf\u306e\u79fb\u52d5\u306f\u3001\u30bd\u30fc\u30b9\u3068\u3057\u3066\u306e\u77e2\u5370\u306e\u4e0b\u90e8\u304b\u3089\u5b9b\u5148\u3068\u3057\u3066\u306e\u77e2\u5370\u306e\u982d\u307e\u3067\u306e\u79fb\u52d5\u3068\u3057\u3066\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/04___notation_data_flow.png\" alt=\"\u8868\u8a18\uff08\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\uff09\" \/><\/p>\n<h3><span id=\"Data_Flow_Example_e-Banking\">\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u306e\u4f8b\u2013\u96fb\u5b50\u30d0\u30f3\u30ad\u30f3\u30b0<\/span><\/h3>\n<p>\u9280\u884c\u306e\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u306f\u3001\u65b0\u3057\u3044\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u8a73\u7d30\u3092\u30aa\u30fc\u30d7\u30f3\u30a2\u30ab\u30a6\u30f3\u30c8\u30d7\u30ed\u30bb\u30b9\u306b\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u9867\u5ba2\u306e\u8a73\u7d30\u304c\u9867\u5ba2\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306b\u4fdd\u6301\u3055\u308c\u3001\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u8a73\u7d30\u304c\u30a2\u30ab\u30a6\u30f3\u30c8\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306b\u4fdd\u6301\u3055\u308c\u307e\u3059\u3002\u89e3\u91c8\u3067\u306f\u300c\u7d50\u679c\u300d\u3068\u3044\u3046\u8a00\u8449\u3092\u4f7f\u7528\u3057\u307e\u3059\u304c\u3001DFD\u306f\u56e0\u679c\u95a2\u4fc2\u3092\u610f\u5473\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u308c\u304c\u793a\u3059\u306e\u306f\u3001\u53e3\u5ea7\u958b\u8a2d\u30d7\u30ed\u30bb\u30b9\u304c\u3001\u9867\u5ba2\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304a\u3088\u3073\u53e3\u5ea7\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306b\u7279\u5b9a\u306e\u9806\u5e8f\u3067\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\u3053\u3068\u306a\u304f\u3001\u9280\u884c\u306e\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3068\u3044\u3046\u3053\u3068\u3060\u3051\u3067\u3059\u3002<\/p>\n<p>\u30aa\u30f3\u30e9\u30a4\u30f3\u30d0\u30f3\u30ad\u30f3\u30b0\u306e\u30ed\u30b0\u30a4\u30f3\u30d7\u30ed\u30bb\u30b9\u3092\u4f7f\u7528\u3059\u308b\u9867\u5ba2\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u540d\u3084\u30d1\u30b9\u30ef\u30fc\u30c9\u306a\u3069\u306e\u30c7\u30fc\u30bf\u3092\u4e00\u9023\u306e\u30ed\u30b0\u30a4\u30f3\u8cc7\u683c\u60c5\u5831\u306e\u5f62\u5f0f\u3067\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u9867\u5ba2\u306f\u3001\u5f15\u304d\u51fa\u3057\u304b\u3089\u3042\u308b\u91d1\u984d\u3092\u53d7\u3051\u53d6\u308b\u304b\u3001\u3042\u308b\u91d1\u984d\u3092\u9810\u91d1\u306b\u5bc4\u4ed8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3069\u3061\u3089\u306e\u5834\u5408\u3082\u3001\u3053\u308c\u306b\u3088\u308a\u3001\u30a2\u30ab\u30a6\u30f3\u30c8\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u6b8b\u9ad8\u304c\u66f4\u65b0\u3055\u308c\u307e\u3059\uff08\u305f\u3060\u3057\u3001\u3053\u306e\u56e0\u679c\u95a2\u4fc2\u3092\u660e\u793a\u7684\u306b\u30e2\u30c7\u30eb\u5316\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\uff09\u3002<\/p>\n<p>\u9867\u5ba2\u306f\u9001\u91d1\u30d7\u30ed\u30bb\u30b9\u3092\u958b\u59cb\u3067\u304d\u3001\u53e3\u5ea7\u306e\u5b9b\u5148\u3068\u8cc7\u91d1\u306e\u91d1\u984d\u3092\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u8cc7\u91d1\u79fb\u52d5\u30d7\u30ed\u30bb\u30b9\u3067\u306f\u3001\u5225\u306e\u9280\u884c\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4ecb\u3057\u3066\u5225\u306e\u9280\u884c\u306b\u8cc7\u91d1\u306e\u91d1\u984d\u3092\u9001\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/03\/bank-account-data-flow-diagram.png\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/13fcf5a3-39b6-438b-9cfa-3741dc750a2d.xml&amp;name=Bank%20Account%20Data%20Flow%20Diagram\">\u3053\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306e\u4f8b\u3092\u7de8\u96c6\u3059\u308b<\/a><\/p>\n<p id=\"NvzzDpk\">\u4e0a\u8a18\u306eDFD\u306e\u4f8b\u306b\u306f\u30015\u3064\u306e\u30d7\u30ed\u30bb\u30b9\u30014\u3064\u306e\u5916\u90e8\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\/\u30ed\u30fc\u30eb\u3001\u304a\u3088\u30732\u3064\u306e\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u9280\u884c\u30b7\u30b9\u30c6\u30e0\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3092\u7db2\u7f85\u7684\u306b\u8868\u73fe\u3059\u308b\u3053\u3068\u3092\u610f\u56f3\u3057\u305f\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001DFD\u306e\u69cb\u7bc9\u65b9\u6cd5\u3092\u7406\u89e3\u3059\u308b\u306e\u306b\u5341\u5206\u306a\u5305\u62ec\u7684\u3067\u3059\u3002<\/p>\n<h3><span id=\"Top-Down_Decomposition_Technique_Multiple_level_DFDs\">\u30c8\u30c3\u30d7\u30c0\u30a6\u30f3\u5206\u89e3\u624b\u6cd5\u2013\u8907\u6570\u30ec\u30d9\u30eb\u306eDFD<\/span><\/h3>\n<p>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u30e2\u30c7\u30ea\u30f3\u30b0\u624b\u6cd5\u306e\u4e3b\u306a\u5229\u70b9\u306f\u3001\u30c8\u30c3\u30d7\u30c0\u30a6\u30f3\u5206\u89e3\uff08\u300c\u30ec\u30d9\u30ea\u30f3\u30b0\u300d\u3068\u3082\u547c\u3070\u308c\u308b\uff09\u3068\u547c\u3070\u308c\u308b\u624b\u6cd5\u306b\u3088\u308a\u3001\u73fe\u5b9f\u4e16\u754c\u306e\u30b7\u30b9\u30c6\u30e0\u306e\u8a73\u7d30\u306a\u8907\u96d1\u3055\u3092\u7ba1\u7406\u3057\u3001\u62bd\u8c61\u5316\u306e\u968e\u5c64\u3067\u30e2\u30c7\u30eb\u5316\u3067\u304d\u308b\u3053\u3068\u3067\u3059\u3002\u30ec\u30d9\u30ea\u30f3\u30b0\u306f\u3001\u5fc5\u8981\u306a\u8a73\u7d30\u30ec\u30d9\u30eb\u306b\u9054\u3059\u308b\u307e\u3067\u3001\u4e00\u9023\u306e\u307e\u3059\u307e\u3059\u8a73\u7d30\u306aDFD\u3092\u63cf\u753b\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u5b9f\u73fe\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>DFD\u3092\u3055\u3089\u306b\u8907\u96d1\u306b\u3059\u308b\uff08\u3064\u307e\u308a\u3001\u30d7\u30ed\u30bb\u30b9\u304c\u591a\u3059\u304e\u306a\u3044\uff09\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306b\u3001\u30de\u30eb\u30c1\u30ec\u30d9\u30eb\u306eDFDS\u3092\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306b\u306f\u3001\u5236\u5fa1\uff08\u96c6\u7d04\uff09\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30bb\u30b9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<li>\u30c8\u30c3\u30d7\u30c0\u30a6\u30f3\u5206\u89e3\u30d7\u30ed\u30bb\u30b9\u3068\u547c\u3070\u308c\u308b\u3001\u9ad8\u30ec\u30d9\u30eb\u306eDFD\u306f\u3042\u307e\u308a\u8a73\u7d30\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff08\u3088\u308a\u8a73\u7d30\u306aDFD\u306f\u4f4e\u30ec\u30d9\u30eb\u3067\u8a73\u3057\u304f\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\uff09\u3002<\/li>\n<li>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306f\u3001\u30d7\u30ed\u30bb\u30b9\u756a\u53f7\uff08\u305f\u3068\u3048\u3070\u3001\u30d7\u30ed\u30bb\u30b91\u3001\u30d7\u30ed\u30bb\u30b92\u306a\u3069\uff09\u3067\u59cb\u307e\u308a\u307e\u3059\u3002<\/li>\n<li>\u756a\u53f7\u4ed8\u3051\u306f\u3001\u6b21\u306e\u3044\u308f\u3086\u308b\u7b2c1\u30ec\u30d9\u30eb\uff08DFD\uff09\u3067\u3082\u7d99\u7d9a\u3055\u308c\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306e\u30d7\u30ed\u30bb\u30b91\u306f\u3001\u30ec\u30d9\u30eb1\u306eDFD\u306e3\u3064\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u7d5e\u308a\u8fbc\u307e\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>\u540c\u69d8\u306b\u3001\u7b2c2\u5c64\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u306f\u30012.1.1\u30012.1.2\u30012.1.3\u30012.1.4\u306a\u3069\u306e\u756a\u53f7\u304c\u4ed8\u3051\u3089\u308c\u307e\u3059\u3002\u968e\u5c64\u5185\u306e\u30d7\u30ed\u30bb\u30b9\u306e\u756a\u53f7\u4ed8\u3051\uff1a\n<ul>\n<li>\uff081\u30012\u30013\u3001\u2026\uff09;<\/li>\n<li>\uff081.1\u30011.2\u30011.3\u3001\u2026\u30012.1\u30012.2\u30012.3\u3001\u2026\uff09;<\/li>\n<li>\uff081.1.1\u30011.1.2\u30011.1.3\u3001\u2026\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u30ec\u30a4\u30e4\u30fc\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<\/li>\n<\/ul>\n<p>DFD\u304b\u3089\u4e0b\u4f4d\u30ec\u30d9\u30eb\u306eDFD\u3078\u306e\u30c8\u30c3\u30d7\u30c0\u30a6\u30f3\u5206\u89e3\u3092\u5b9f\u884c\u3059\u308b\u5834\u5408\u3001\u5165\u529b\u3068\u51fa\u529b\u306fDFD\u306e\u30ec\u30d9\u30eb\u9593\u3067\u4fdd\u5b58\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u30ec\u30d9\u30ebn\u3068n +1\u306f\u540c\u3058\u5165\u529b\u3068\u51fa\u529b\u3092\u6301\u3063\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/17-balancing-dfd.png\" alt=\"DFD\u306e\u30d0\u30e9\u30f3\u30b7\u30f3\u30b0\" \/><\/p>\n<h3><span id=\"DFD_Example_food_ordering_system\"><a href=\"https:\/\/www.visual-paradigm.com\/tw\/tutorials\/data-flow-diagram-example-food-ordering-system.jsp\">DFD\u306e\u4f8b<\/a>\u2013\u98df\u54c1\u6ce8\u6587\u30b7\u30b9\u30c6\u30e0<\/span><\/h3>\n<h4><span id=\"Context_Diagram_Level_0_DFD\">\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\uff08\u30ec\u30d9\u30eb0 \u2013 DFD\uff09<\/span><\/h4>\n<p>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u6982\u8981\u3068\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u300c\u4e16\u754c\u300d\u306e\u4ed6\u306e\u90e8\u5206\u3068\u3069\u306e\u3088\u3046\u306b\u76f8\u4e92\u4f5c\u7528\u3059\u308b\u304b\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306f\u3001\u30ec\u30d9\u30eb0\u3068\u547c\u3070\u308c\u308b\u6700\u4e0a\u4f4d\u30ec\u30d9\u30eb\u306e\u307f\u3092\u793a\u3059\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u3067\u3059\u3002\u3053\u306e\u30ec\u30d9\u30eb\u3067\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u6a5f\u80fd\u3001\u3064\u307e\u308a\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3068\u306e\u76f8\u4e92\u4f5c\u7528\u3092\u8868\u3059\u8868\u793a\u53ef\u80fd\u306a\u30d7\u30ed\u30bb\u30b9\u30ce\u30fc\u30c9\u306f1\u3064\u3060\u3051\u3067\u3059\u3002\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306e\u5229\u70b9\u306e\u3044\u304f\u3064\u304b\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u30b7\u30b9\u30c6\u30e0\u306e\u5883\u754c\u306e\u6982\u8981\u3092\u793a\u3057\u307e\u3059<\/li>\n<li>\u7c21\u5358\u306a\u8868\u8a18\u3067\u3001\u7406\u89e3\u3059\u308b\u306e\u306b\u6280\u8853\u7684\u306a\u77e5\u8b58\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093<\/li>\n<li>\u8868\u8a18\u304c\u9650\u3089\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u63cf\u753b\u3001\u5909\u66f4\u3001\u4f5c\u6210\u304c\u7c21\u5358<\/li>\n<\/ul>\n<p>\u6b21\u306e\u56f3\u306f\u3001\u98df\u54c1\u6ce8\u6587\u30b7\u30b9\u30c6\u30e0\u7528\u306b\u4f5c\u6210\u3055\u308c\u305f\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\uff08\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\uff09\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u3053\u308c\u306b\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u30e2\u30c7\u30eb\uff08\u3053\u306e\u5834\u5408\u306f\u300c\u98df\u54c1\u6ce8\u6587\u30b7\u30b9\u30c6\u30e0\u300d\uff09\u3092\u8868\u3059\u30d7\u30ed\u30bb\u30b9\uff08\u5f62\u72b6\uff09\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<li>\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<\/li>\n<\/ul>\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u3001\u30ad\u30c3\u30c1\u30f3\u3001\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3001\u304a\u3088\u3073\u9867\u5ba2\u304c\u30b7\u30b9\u30c6\u30e0\u3068\u5bfe\u8a71\u3059\u308b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3067\u3059\u3002<\/p>\n<p>\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\u306e\u9593\u3067\u60c5\u5831\u4ea4\u63db\u304c\u884c\u308f\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3059\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\uff08\u30b3\u30cd\u30af\u30bf\uff09\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/food-ordering-system-context-dfd.png\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/0a02926d-965e-4443-8103-980b71d7c91f.xml&amp;name=Food%20Ordering%20System%20Context%20DFD\">\u3053\u306eDFD\u306e\u4f8b\u3092\u7de8\u96c6\u3059\u308b<\/a><\/p>\n<p>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8DFD\u306f\u3001\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u30e2\u30c7\u30eb\u3078\u306e\u30a8\u30f3\u30c8\u30ea\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002\u30d7\u30ed\u30bb\u30b9\u306f1\u3064\u3060\u3051\u3067\u3001\u30c7\u30fc\u30bf\u30b9\u30c8\u30ec\u30fc\u30b8\u306f\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n<h3><span id=\"Level_1_DFD\">\u30ec\u30d9\u30eb1DFD<\/span><\/h3>\n<p>\u30ec\u30d9\u30eb1DFD\u306f\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u3088\u308a\u3082\u30b7\u30b9\u30c6\u30e0\u306e\u8a73\u7d30\u306a\u30d3\u30e5\u30fc\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u6210\u3059\u308b\u4e3b\u8981\u306a\u30b5\u30d6\u30d7\u30ed\u30bb\u30b9\u3068\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306e\u56f3\u306f\u3001\u30ec\u30d9\u30eb1 DFD\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8DFD\u306b\u793a\u3055\u308c\u3066\u3044\u308b\u98df\u54c1\u6ce8\u6587\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30bb\u30b9\u306e\u5185\u8a33\uff08\u3064\u307e\u308a\u5206\u89e3\uff09\u3067\u3059\u3002\u56f3\u3092\u8aad\u3093\u3067\u304b\u3089\u3001\u305d\u308c\u306b\u57fa\u3065\u3044\u305f\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u6982\u5ff5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/food-ordering-system.png\" \/><\/p>\n<p><a id=\"tinymce\" class=\"edit-template-v1\" 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\">\u3053\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306e\u4f8b\u3092\u7de8\u96c6\u3059\u308b<\/a><\/p>\n<p>\u98df\u54c1\u6ce8\u6587\u30b7\u30b9\u30c6\u30e0\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306e\u4f8b\u306b\u306f\u30013\u3064\u306e\u30d7\u30ed\u30bb\u30b9\u30014\u3064\u306e\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3001\u304a\u3088\u30732\u3064\u306e\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u56f3\u306b\u3088\u308b\u3068\u3001\u9867\u5ba2\u304c\u6ce8\u6587\u3067\u304d\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u98df\u54c1\u6ce8\u6587\u30d7\u30ed\u30bb\u30b9\u306f\u6ce8\u6587\u3092\u53d7\u3051\u53d6\u308a\u3001\u305d\u308c\u3092\u30ad\u30c3\u30c1\u30f3\u306b\u8ee2\u9001\u3057\u3001\u6ce8\u6587\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306b\u4fdd\u5b58\u3057\u3001\u66f4\u65b0\u3055\u308c\u305f\u5728\u5eab\u306e\u8a73\u7d30\u3092\u5728\u5eab\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u3067\u306f\u3001\u9867\u5ba2\u3078\u306e\u8acb\u6c42\u3082\u884c\u308f\u308c\u307e\u3059\u3002<\/li>\n<li>\u7ba1\u7406\u8005\u306f\u3001\u30ec\u30dd\u30fc\u30c8\u306e\u751f\u6210\u30d7\u30ed\u30bb\u30b9\u3092\u901a\u3058\u3066\u30ec\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u5728\u5eab\u306e\u8a73\u7d30\u3068\u6ce8\u6587\u3092\u3001\u305d\u308c\u305e\u308c\u5728\u5eab\u3068\u6ce8\u6587\u306e\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3078\u306e\u5165\u529b\u3068\u3057\u3066\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002<\/li>\n<li>\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u306f\u3001\u5728\u5eab\u6ce8\u6587\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u6ce8\u6587\u5728\u5eab\u30d7\u30ed\u30bb\u30b9\u3092\u958b\u59cb\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u5728\u5eab\u6ce8\u6587\u3092\u30d9\u30f3\u30c0\u30fc\u306b\u8ee2\u9001\u3057\u3001\u66f4\u65b0\u3055\u308c\u305f\u5728\u5eab\u306e\u8a73\u7d30\u3092\u5728\u5eab\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<h3><span id=\"Logical_vs_Physical_DFD\"><a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/logical-vs-physical-data-flow-diagrams\/\">\u8ad6\u7406DFD\u3068\u7269\u7406DFD<\/a><\/span><\/h3>\n<p>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306f\u3001\u8ad6\u7406\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u3068\u7269\u7406\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306b\u5206\u3051\u3089\u308c\u307e\u3059\u3002\u8ad6\u7406DFD\u306f\u3001\u30d3\u30b8\u30cd\u30b9\u3068\u305d\u306e\u904b\u7528\u65b9\u6cd5\u306b\u7126\u70b9\u3092\u5f53\u3066\u3066\u3044\u307e\u3059\u3002\u767a\u751f\u3059\u308b\u30d3\u30b8\u30cd\u30b9\u30a4\u30d9\u30f3\u30c8\u3068\u3001\u5404\u30a4\u30d9\u30f3\u30c8\u306b\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u3068\u751f\u6210\u3055\u308c\u308b\u30c7\u30fc\u30bf\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001\u7269\u7406DFD\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u3069\u306e\u3088\u3046\u306b\u5b9f\u88c5\u3055\u308c\u308b\u304b\u3092\u793a\u3057\u307e\u3059\u3002\u8ad6\u7406DFD\u3068\u7269\u7406DFD\u306e\u4e3b\u306a\u9055\u3044\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<h3><span id=\"Logical_DFD\">\u8ad6\u7406DFD<\/span><\/h3>\n<ul>\n<li>\u8ad6\u7406DFD\u306f\u3001\u30d3\u30b8\u30cd\u30b9\u306e\u904b\u55b6\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002<\/li>\n<li>\u30d7\u30ed\u30bb\u30b9\u306f\u30d3\u30b8\u30cd\u30b9\u6d3b\u52d5\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li>\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306f\u3001\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u65b9\u6cd5\u306b\u95a2\u4fc2\u306a\u304f\u3001\u30c7\u30fc\u30bf\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u8868\u3057\u307e\u3059\u3002<\/li>\n<li>\u305d\u308c\u306f\u30d3\u30b8\u30cd\u30b9\u304c\u3069\u306e\u3088\u3046\u306b\u7ba1\u7406\u3059\u308b\u304b\u3067\u3059\u3002<\/li>\n<\/ul>\n<h3><span id=\"Physical_DFD\">\u7269\u7406DFD<\/span><\/h3>\n<ul>\n<li>\n<ul>\n<li>\u7269\u7406DFD\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u3069\u306e\u3088\u3046\u306b\u5b9f\u88c5\u3055\u308c\u308b\u304b\uff08\u307e\u305f\u306f\u73fe\u5728\u306e\u30b7\u30b9\u30c6\u30e0\u304c\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u304b\uff09\u3092\u793a\u3057\u307e\u3059\u3002<\/li>\n<li>\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u30e2\u30b8\u30e5\u30fc\u30eb\u3001\u304a\u3088\u3073\u624b\u52d5\u624b\u9806\u3092\u8868\u3057\u307e\u3059\u3002<\/li>\n<li>\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306f\u3001\u7269\u7406\u30d5\u30a1\u30a4\u30eb\u3068\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3001\u624b\u52d5\u30d5\u30a1\u30a4\u30eb\u3092\u8868\u3057\u307e\u3059\u3002<\/li>\n<li>\u3053\u308c\u306f\u3001\u5165\u529b\u30c7\u30fc\u30bf\u306e\u691c\u8a3c\u3001\u30ec\u30b3\u30fc\u30c9\u306e\u53d6\u5f97\u3001\u30d7\u30ed\u30bb\u30b9\u306e\u6b63\u5e38\u306a\u5b8c\u4e86\u306e\u4fdd\u8a3c\u3001\u304a\u3088\u3073\u30b7\u30b9\u30c6\u30e0\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u305f\u3081\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u7269\u7406DFD\u306f\u7269\u7406\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u5b9f\u969b\u306e\u30d5\u30ed\u30fc\u3092\u6307\u5b9a\u3057\u307e\u3059\u304c\u3001\u8ad6\u7406DFD\u306f\u30d3\u30b8\u30cd\u30b9\u7528\u8a9e\u306e\u60c5\u5831\u30d5\u30ed\u30fc\u306e\u307f\u306b\u7126\u70b9\u3092\u5f53\u3066\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u305f\u3068\u3048\u3070\u3001\u7269\u7406DFD\u306f\u7269\u7406\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u5b9f\u969b\u306e\u30d5\u30ed\u30fc\u3092\u6307\u5b9a\u3057\u307e\u3059\u304c\u3001\u8ad6\u7406DFD\u306f\u30d3\u30b8\u30cd\u30b9\u7528\u8a9e\u306e\u60c5\u5831\u30d5\u30ed\u30fc\u306e\u307f\u306b\u7126\u70b9\u3092\u5f53\u3066\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/01-dfd-example-physical-dfd-to-logical-dfd.png\" alt=\"\u7269\u7406\u7684\u304a\u3088\u3073\u8ad6\u7406\u7684DFD\uff1a\u4f8b1\" \/><\/p>\n<p>\u3055\u3089\u306b\u3001\u8ad6\u7406DFD\u306f\u3001\u7269\u7406\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306e\u307f\u3092\u53c2\u7167\u3057\u3001\u30c7\u30fc\u30bf\u3092\u5909\u63db\u3057\u306a\u3044\u7269\u7406\u30d7\u30ed\u30bb\u30b9\u3092\u6392\u9664\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/02-dfd-example-physical-to-logical-dfd.png\" alt=\"\u7269\u7406\u7684\u304a\u3088\u3073\u8ad6\u7406\u7684DFD\uff1a\u4f8b2\" \/><\/p>\n<h3><span id=\"Logical_DFD_Example_Grocery_Store\">\u8ad6\u7406DFD\u306e\u4f8b\u2013\u98df\u6599\u54c1\u5e97<\/span><\/h3>\n<p>\u8ad6\u7406DFD\u306f\u3001\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306e\u7269\u7406\u7684\u306a\u5b9f\u88c5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u305b\u305a\u306b\u3001\u95a2\u9023\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/04-logical-dfd-example-grocery-store.png\" alt=\"\u8ad6\u7406DFD\u306e\u4f8b-\u98df\u6599\u54c1\u5e97\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/17b473be-0da9-4364-ad58-1910f57014ea.xml&amp;name=Logical%20Data%20Flow%20Diagram%20Example%3A%20Grocery%20Store\">\u3053\u306e\u8ad6\u7406DFD\u306e\u4f8b\u3092\u7de8\u96c6\u3059\u308b<\/a><\/p>\n<h3><span id=\"Physical_DFD_Example_Grocery_Store\">\u7269\u7406\u7684\u306aDFD\u306e\u4f8b\u2013\u98df\u6599\u54c1\u5e97<\/span><\/h3>\n<ul>\n<li>\u7269\u7406\u7684\u306aDFD\u306f\u3001\u30d0\u30fc\u30b3\u30fc\u30c9\uff08\u307b\u3068\u3093\u3069\u306e\u98df\u6599\u54c1\u5e97\u306e\u5546\u54c1\u306b\u3042\u308bUPC PRICE\u30b3\u30fc\u30c9\uff09\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li>\u3055\u3089\u306b\u3001\u7269\u7406DFD\u306f\u30b9\u30ad\u30e3\u30f3\u306a\u3069\u306e\u624b\u52d5\u30d7\u30ed\u30bb\u30b9\u306b\u3064\u3044\u3066\u8a00\u53ca\u3057\u3001\u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u7528\u3057\u3066\u30a2\u30a4\u30c6\u30e0\u306e\u5c0f\u8a08\u3092\u4fdd\u6301\u3059\u308b\u3053\u3068\u3092\u8aac\u660e\u3057\u3066\u3044\u307e\u3059<\/li>\n<li>\u652f\u6255\u3044\u306f\u3001\u73fe\u91d1\u3001\u5c0f\u5207\u624b\u3001\u307e\u305f\u306f\u30c7\u30d3\u30c3\u30c8\u30ab\u30fc\u30c9\u3067\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059<\/li>\n<\/ul>\n<p>\u6700\u5f8c\u306b\u3001\u305d\u308c\u306f\u305d\u306e\u540d\u524d\u3067\u30ec\u30b7\u30fc\u30c8\u3092\u53c2\u7167\u3057\u307e\u3059\u3001CASH REGISTERRECEIPT<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2022\/02\/physical-data-flow-diagram-example-grocery-store.png\" \/><\/p>\n<p><a class=\"edit-template-v1\" href=\"https:\/\/online.visual-paradigm.com\/app\/diagrams\/#diagram:proj=0&amp;type=DataFlowDiagram&amp;gallery=\/repository\/00c294fb-3145-4708-bc8c-e3e2c42bdf14.xml&amp;name=Physical%20Data%20Flow%20Diagram%20Example%3A%20Grocery%20Store\">\u3053\u306e\u7269\u7406DFD\u306e\u4f8b\u3092\u7de8\u96c6\u3059\u308b<\/a><\/p>\n<h3><span id=\"Tips_and_Notes_on_Data_Flow_Diagrams\">\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306b\u95a2\u3059\u308b\u30d2\u30f3\u30c8\u3068\u6ce8\u610f<\/span><\/h3>\n<ul>\n<li>\u8907\u96d1\u306b\u3057\u3059\u304e\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u901a\u5e38\u30015\u301c7\u4eba\u306e\u5e73\u5747\u7684\u306a\u4eba\u304c\u30d7\u30ed\u30bb\u30b9\u3092\u7ba1\u7406\u3067\u304d\u307e\u3059<\/li>\n<li><a 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