{"id":9993,"date":"2023-03-02T14:38:48","date_gmt":"2023-03-02T06:38:48","guid":{"rendered":"https:\/\/www.cybermedian.com\/ja\/mastering-data-flow-diagrams-a-comprehensive-guide-to-system-analysis-and-design\/"},"modified":"2026-04-20T09:11:36","modified_gmt":"2026-04-20T09:11:36","slug":"mastering-data-flow-diagrams-a-comprehensive-guide-to-system-analysis-and-design","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/ja\/mastering-data-flow-diagrams-a-comprehensive-guide-to-system-analysis-and-design\/","title":{"rendered":"\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306e\u7fd2\u5f97\uff1a\u30b7\u30b9\u30c6\u30e0\u5206\u6790\u3068\u8a2d\u8a08\u306e\u5305\u62ec\u7684\u30ac\u30a4\u30c9"},"content":{"rendered":"<p><a href=\"https:\/\/www.visual-paradigm.com\/tutorials\/data-flow-diagram-dfd.jsp\">\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3<\/a>\uff08DFD\uff09\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u60c5\u5831\u306e\u6d41\u308c\u3092\u53ef\u8996\u5316\u3059\u308b\u8868\u73fe\u3067\u3059\u3002\u69cb\u9020\u5316\u3055\u308c\u305f\u65b9\u6cd5\u3067\u30d7\u30ed\u30bb\u30b9\u3084\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3092\u8a18\u8ff0\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u60c5\u5831\u30b7\u30b9\u30c6\u30e0\u306e\u5206\u6790\u3001\u8a2d\u8a08\u3001\u6587\u66f8\u5316\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p><img alt=\"How to Create Data Flow Diagram (DFD)?\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2023\/03\/how-to-create-data-flow-diagram.png\"\/><\/p>\n<h3>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\uff08DFD\uff09\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n<p>A <a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\">\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3<\/a>\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u30c7\u30fc\u30bf\u306e\u6d41\u308c\u3092\u56f3\u5f0f\u5316\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u5404\u30d7\u30ed\u30bb\u30b9\u306e\u5165\u529b\u3068\u51fa\u529b\u3001\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306b\u683c\u7d0d\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3001\u304a\u3088\u3073\u3053\u308c\u3089\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u306e\u30c7\u30fc\u30bf\u306e\u6d41\u308c\u3092\u793a\u3057\u307e\u3059\u3002DFD\u306e\u76ee\u7684\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u30c7\u30fc\u30bf\u306e\u6d41\u308c\u3092\u660e\u78ba\u306b\u793a\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u52d5\u4f5c\u3092\u660e\u78ba\u304b\u3064\u7c21\u6f54\u306b\u628a\u63e1\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<p><img alt=\"Chapter 8. Data Flow Diagram - Visual Paradigm Community Circle\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2023\/03\/Data-Flow-Diagram-Food-Ordering-System.png\"\/><\/p>\n<h3>\u306a\u305cDFD\u304c\u91cd\u8981\u306a\u306e\u304b\uff1f<\/h3>\n<p>DFD\u306f\u3001\u60c5\u5831\u30b7\u30b9\u30c6\u30e0\u306e\u5206\u6790\u3084\u8a2d\u8a08\u306b\u69cb\u9020\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u91cd\u8981\u3067\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u306e\u5165\u529b\u3001\u51fa\u529b\u3001\u30d7\u30ed\u30bb\u30b9\u3092\u660e\u78ba\u306b\u7406\u89e3\u3067\u304d\u308b\u305f\u3081\u3001\u6f5c\u5728\u7684\u306a\u554f\u984c\u3084\u975e\u52b9\u7387\u3092\u7279\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u307e\u305f\u3001DFD\u306f\u60c5\u5831\u30b7\u30b9\u30c6\u30e0\u306e\u6587\u66f8\u5316\u306b\u3082\u5f79\u7acb\u3061\u3001\u6280\u8853\u8005\u3068\u975e\u6280\u8853\u8005\u53cc\u65b9\u304c\u7c21\u5358\u306b\u7406\u89e3\u3067\u304d\u308b\u56f3\u5f0f\u7684\u306a\u8868\u73fe\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<h3>DFD\u306e\u7c21\u5358\u306a\u6b74\u53f2\uff1a<\/h3>\n<p>DFD\u306f\u30011979\u5e74\u306b\u30e9\u30ea\u30fc\u30fb\u30b3\u30f3\u30b9\u30bf\u30f3\u30c8\u30a4\u30f3\u3068\u30a8\u30c9\u30fb\u30e6\u30fc\u30c7\u30f3\u304c\u66f8\u3044\u305f\u300e\u69cb\u9020\u5316\u8a2d\u8a08\u300f\u3067\u521d\u3081\u3066\u7d39\u4ecb\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u306e\u6280\u8853\u306f\u5f53\u521d\u3001\u5927\u898f\u6a21\u3067\u8907\u96d1\u306a\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b7\u30b9\u30c6\u30e0\u306e\u958b\u767a\u306b\u4f7f\u7528\u3055\u308c\u307e\u3057\u305f\u3002\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u3001DFD\u306f\u3055\u307e\u3056\u307e\u306a\u7523\u696d\u5206\u91ce\u3067\u5fdc\u7528\u3055\u308c\u3001\u30b7\u30b9\u30c6\u30e0\u5206\u6790\u3068\u8a2d\u8a08\u306e\u91cd\u8981\u306a\u30c4\u30fc\u30eb\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306e\u57fa\u672c\u6982\u5ff5\uff1a<\/h3>\n<p>DFD\u306e\u57fa\u672c\u6982\u5ff5\u306b\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u6210\u8981\u7d20\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u3067\u767a\u751f\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u3067\u30c7\u30fc\u30bf\u3092\u4fdd\u6301\u3059\u308b\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3001\u304a\u3088\u3073\u3053\u308c\u3089\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3092\u79fb\u52d5\u3059\u308b\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u304c\u542b\u307e\u308c\u307e\u3059\u3002DFD\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3068\u305d\u306e\u74b0\u5883\u3068\u306e\u95a2\u4fc2\u3092\u793a\u3059\u9ad8\u30ec\u30d9\u30eb\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u304b\u3089\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u5185\u90e8\u69cb\u9020\u3092\u8a73\u7d30\u306b\u793a\u3059\u56f3\u307e\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u62bd\u8c61\u5ea6\u3067\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002\u7570\u306a\u308b\u62bd\u8c61\u5ea6\u306b\u3088\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u3092\u3055\u307e\u3056\u307e\u306a\u8a73\u7d30\u30ec\u30d9\u30eb\u3067\u8a73\u7d30\u306b\u5206\u6790\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>DFD\u306e\u8981\u7d20<\/h2>\n<p>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\uff08DFD\uff09\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3068\u305d\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3092\u8868\u3059\u305f\u3081\u306b\u9023\u643a\u3059\u308b\u8907\u6570\u306e\u8981\u7d20\u304b\u3089\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001DFD\u306e\u7a2e\u985e\u3001DFD\u306e\u4f5c\u6210\u30eb\u30fc\u30eb\u3001DFD\u306e\u5229\u70b9\u3001\u304a\u3088\u3073DFD\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u624b\u9806\u306b\u3064\u3044\u3066\u63a2\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u3067\u4f7f\u7528\u3055\u308c\u308b\u8a18\u53f7<\/h3>\n<p>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\uff08DFD\uff09\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u7570\u306a\u308b\u8981\u7d20\u3068\u305d\u308c\u3089\u306e\u95a2\u4fc2\u3092\u8868\u3059\u305f\u3081\u306b\u8a18\u53f7\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001DFD\u3067\u4f7f\u7528\u3055\u308c\u308b\u8a18\u53f7\u3001\u3059\u306a\u308f\u3061\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3001\u30d7\u30ed\u30bb\u30b9\u3001\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3001\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u306b\u3064\u3044\u3066\u63a2\u308a\u307e\u3059\u3002<\/p>\n<p>\u7570\u306a\u308b\u8457\u8005\u3084\u624b\u6cd5\u306f\u305d\u308c\u305e\u308c\u72ec\u81ea\u306eDFD\u8868\u8a18\u4f53\u7cfb\u3092\u958b\u767a\u3057\u3066\u304a\u308a\u3001\u4f7f\u7528\u3055\u308c\u308b\u8a18\u53f7\u306b\u308f\u305a\u304b\u306a\u9055\u3044\u304c\u751f\u3058\u307e\u3059\u3002\u3057\u304b\u3057\u3001DFD\u306e\u57fa\u672c\u7684\u306a\u6982\u5ff5\u3084\u539f\u5247\u306f\u3053\u308c\u3089\u306e\u8868\u8a18\u4f53\u7cfb\u9593\u3067\u5171\u901a\u3057\u3066\u304a\u308a\u3001\u8868\u8a18\u306e\u9078\u629e\u306f\u901a\u5e38\u3001\u7279\u5b9a\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3084\u7d44\u7e54\u306e\u597d\u307f\u306b\u3088\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n<p><img alt=\"DFD Using Yourdon and DeMarco Notation\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2023\/03\/dfd-notations-comparison.png\"\/><\/p>\n<p>\u4f7f\u7528\u3059\u308b\u8868\u8a18\u306b\u304b\u304b\u308f\u3089\u305a\u3001DFD\u306e\u76ee\u7684\u304c\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u30c7\u30fc\u30bf\u306e\u6d41\u308c\u3092\u660e\u78ba\u304b\u3064\u7c21\u6f54\u306b\u8868\u73fe\u3059\u308b\u3053\u3068\u3067\u3042\u308b\u3053\u3068\u3092\u8a8d\u8b58\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<h3>\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff1a<\/h3>\n<p>\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u5916\u90e8\u306b\u5b58\u5728\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u3068\u76f8\u4e92\u4f5c\u7528\u3059\u308b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3067\u3059\u3002DFD\u306e\u7aef\u90e8\u306b\u3042\u308b\u9577\u65b9\u5f62\u3067\u8868\u3055\u308c\u307e\u3059\u3002\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u5165\u529b\u306e\u6e90\u307e\u305f\u306f\u51fa\u529b\u306e\u5148\u3067\u3042\u308a\u3001\u305d\u306e\u5f79\u5272\u3092\u793a\u3059\u3088\u3046\u306b\u30e9\u30d9\u30eb\u4ed8\u3051\u3055\u308c\u307e\u3059\u3002\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u4f8b\u306b\u306f\u3001\u9867\u5ba2\u3001\u4ed5\u5165\u5148\u3001\u898f\u5236\u6a5f\u95a2\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30d7\u30ed\u30bb\u30b9\uff1a<\/h3>\n<p>\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u5b9f\u884c\u3059\u308b\u6d3b\u52d5\u3084\u30bf\u30b9\u30af\u3092\u8868\u3057\u307e\u3059\u3002DFD\u3067\u306f\u5186\u307e\u305f\u306f\u89d2\u4e38\u9577\u65b9\u5f62\u3067\u8868\u3055\u308c\u307e\u3059\u3002\u5404\u30d7\u30ed\u30bb\u30b9\u306b\u306f\u3001\u305d\u306e\u6a5f\u80fd\u3092\u8aac\u660e\u3059\u308b\u56fa\u6709\u306e\u30e9\u30d9\u30eb\u304c\u4ed8\u4e0e\u3055\u308c\u307e\u3059\u3002\u30d7\u30ed\u30bb\u30b9\u306f\u5165\u529b\u3092\u53d7\u4fe1\u3057\u305f\u308a\u3001\u51fa\u529b\u3092\u751f\u6210\u3057\u305f\u308a\u3001\u307e\u305f\u306f\u4e21\u65b9\u306e\u6a5f\u80fd\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\uff1a<\/h3>\n<p>\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u3067\u30c7\u30fc\u30bf\u304c\u683c\u7d0d\u3055\u308c\u308b\u5834\u6240\u3092\u8868\u3057\u307e\u3059\u3002DFD\u3067\u306f\u3001\u5074\u9762\u306b\u5e73\u884c\u7dda\u3092\u63cf\u3044\u305f\u9577\u65b9\u5f62\u3067\u8868\u3055\u308c\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u30ad\u30e3\u30d3\u30cd\u30c3\u30c8\u306e\u3088\u3046\u306a\u7269\u7406\u7684\u306a\u3082\u306e\u3084\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u3088\u3046\u306a\u96fb\u5b50\u7684\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002\u5404\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306b\u306f\u3001\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u30c7\u30fc\u30bf\u306e\u7a2e\u985e\u3092\u8aac\u660e\u3059\u308b\u56fa\u6709\u306e\u30e9\u30d9\u30eb\u304c\u4ed8\u4e0e\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\uff1a<\/h3>\n<p>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u306f\u3001\u30d7\u30ed\u30bb\u30b9\u3068\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u306e\u9593\u3067\u306e\u30c7\u30fc\u30bf\u306e\u79fb\u52d5\u3092\u8868\u3057\u307e\u3059\u3002DFD\u3067\u306f\u77e2\u5370\u3067\u8868\u3055\u308c\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u306f\u3001\u9001\u4fe1\u3055\u308c\u308b\u30c7\u30fc\u30bf\u3092\u8aac\u660e\u3059\u308b\u30e9\u30d9\u30eb\u304c\u4ed8\u4e0e\u3055\u308c\u307e\u3059\u3002\u5404\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u306b\u306f\u65b9\u5411\u304c\u3042\u308a\u3001\u305d\u308c\u304c\u30d7\u30ed\u30bb\u30b9\u3084\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u304b\u3089\u306e\u5165\u529b\u304b\u51fa\u529b\u304b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<p>DFD\u3067\u4f7f\u7528\u3055\u308c\u308b\u8a18\u53f7\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3068\u305d\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u56f3\u5f0f\u7684\u306a\u8868\u73fe\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002DFD\u306e\u4f5c\u6210\u3084\u89e3\u91c8\u3092\u884c\u3046\u305f\u3081\u306b\u306f\u3001\u3053\u308c\u3089\u306e\u8a18\u53f7\u306e\u7406\u89e3\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u8a18\u53f7\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u306f\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u30c7\u30fc\u30bf\u3068\u30d7\u30ed\u30bb\u30b9\u306e\u6d41\u308c\u3092\u8996\u899a\u5316\u3057\u3001\u6539\u5584\u306e\u4f59\u5730\u304c\u3042\u308b\u9818\u57df\u3092\u7279\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>DFD\u306e\u7a2e\u985e\uff1a<\/h2>\n<p>DFD\u306b\u306f3\u3064\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n<ol>\n<li><strong>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\uff1a<\/strong>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3092\u5358\u4e00\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u3057\u3066\u793a\u3057\u3001\u5916\u90e8\u30a8\u30f3\u30c8\u30c6\u30a3\u3068\u306e\u76f8\u4e92\u4f5c\u7528\u3092\u8868\u3057\u307e\u3059\u3002\u3053\u308c\u306fDFD\u306e\u6700\u9ad8\u30ec\u30d9\u30eb\u3067\u3042\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u6982\u8981\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<p><img alt=\"Online Data Flow Diagram Maker\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2023\/03\/bdd6f129-13da-4410-a51f-96bb4d6d94c0.png\"\/><\/p>\n<ol>\n<li><strong>\u30ec\u30d9\u30eb0\u56f3\uff1a<\/strong>\u30ec\u30d9\u30eb0\u56f3\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u4e3b\u8981\u306a\u30d7\u30ed\u30bb\u30b9\u3001\u5165\u529b\u3001\u51fa\u529b\u3001\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3092\u793a\u3057\u307e\u3059\u3002\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u3088\u308a\u3082\u30b7\u30b9\u30c6\u30e0\u306e\u8a73\u7d30\u306a\u8996\u70b9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u4f4e\u30ec\u30d9\u30eb\u306e\u56f3\uff1a<\/strong>\u4f4e\u30ec\u30d9\u30eb\u306e\u56f3\u306f\u3001\u5404\u30ec\u30d9\u30eb\u3067\u3088\u308a\u591a\u304f\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3092\u542b\u3080\u5f62\u3067\u30d7\u30ed\u30bb\u30b9\u3092\u3088\u308a\u8a73\u7d30\u306b\u793a\u3057\u307e\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u306e\u3088\u308a\u8a73\u7d30\u306a\u8996\u70b9\u3092\u63d0\u4f9b\u3067\u304d\u3001\u6539\u5584\u3059\u3079\u304d\u9818\u57df\u3092\u7279\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\n<p id=\"iFwtFeq\"><img alt=\"What is Data Flow Diagram (DFD)? How to Draw DFD?\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2023\/03\/13-decompose-process.png\"\/><\/p>\n<\/li>\n<\/ol>\n<h2>DFD\u306e\u4f5c\u6210\u30eb\u30fc\u30eb\uff1a<\/h2>\n<p>\u52b9\u679c\u7684\u306aDFD\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u30eb\u30fc\u30eb\u3092\u5b88\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n<ol>\n<li><strong>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u304b\u3089\u59cb\u3081\u308b\uff1a<\/strong>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3068\u5916\u90e8\u30a8\u30f3\u30c8\u30c6\u30a3\u3068\u306e\u76f8\u4e92\u4f5c\u7528\u306e\u6982\u8981\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002DFD\u306e\u57fa\u76e4\u3067\u3042\u308a\u3001\u6700\u521d\u306b\u4f5c\u6210\u3059\u3079\u304d\u3067\u3059\u3002<\/li>\n<li><strong>\u660e\u78ba\u3067\u7c21\u6f54\u306a\u8a18\u6cd5\u3092\u4f7f\u7528\u3059\u308b\uff1a<\/strong>DFD\u304c\u7406\u89e3\u3057\u3084\u3059\u304f\u3001\u4f1d\u9054\u3057\u3084\u3059\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3001\u660e\u78ba\u3067\u7c21\u6f54\u306a\u8a18\u6cd5\u3092\u4f7f\u7528\u3059\u3079\u304d\u3067\u3059\u3002\u3053\u308c\u306b\u306f\u3001\u56f3\u5168\u4f53\u3067\u4e00\u8cab\u3057\u305f\u8a18\u53f7\u3068\u898f\u5247\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u56f3\u304c\u30d0\u30e9\u30f3\u30b9\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\uff1a<\/strong>\u30d7\u30ed\u30bb\u30b9\u306e\u5165\u529b\u306f\u51fa\u529b\u3068\u7b49\u3057\u304f\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u5b8c\u5168\u3067\u3042\u308a\u3001\u30c7\u30fc\u30bf\u304c\u5931\u308f\u308c\u305f\u308a\u91cd\u8907\u3057\u305f\u308a\u3057\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u3059\u3079\u3066\u306e\u5fc5\u8981\u306a\u30d7\u30ed\u30bb\u30b9\u3068\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3092\u542b\u3081\u308b\uff1a<\/strong>DFD\u306b\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u6b63\u5e38\u306b\u6a5f\u80fd\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u3059\u3079\u3066\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u3092\u542b\u3081\u308b\u3079\u304d\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001DFD\u304c\u5b8c\u5168\u3067\u3042\u308a\u3001\u91cd\u8981\u306a\u60c5\u5831\u304c\u6b20\u843d\u3057\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<h2>DFD\u306e\u5229\u70b9\uff1a<\/h2>\n<p>DFD\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n<ol>\n<li><strong>\u30b7\u30b9\u30c6\u30e0\u306e\u7406\u89e3\u3092\u5411\u4e0a\u3055\u305b\u308b\uff1a<\/strong>DFD\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3068\u305d\u306e\u69cb\u6210\u8981\u7d20\u3092\u660e\u78ba\u304b\u3064\u7c21\u6f54\u306b\u8868\u73fe\u3059\u308b\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u3001\u7406\u89e3\u3084\u4f1d\u9054\u3092\u5bb9\u6613\u306b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u6539\u5584\u3059\u3079\u304d\u9818\u57df\u3092\u7279\u5b9a\u3059\u308b\uff1a<\/strong>DFD\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u975e\u52b9\u7387\u6027\u3084\u91cd\u8907\u3092\u7279\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u3001\u6539\u5584\u306e\u53ef\u80fd\u6027\u3092\u793a\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u4ed6\u306e\u30b7\u30b9\u30c6\u30e0\u6587\u66f8\u4f5c\u6210\u306e\u57fa\u76e4\uff1a<\/strong>DFD\u306f\u3001\u6a5f\u80fd\u8981\u4ef6\u3084\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u306a\u3069\u306e\u4ed6\u306e\u30b7\u30b9\u30c6\u30e0\u6587\u66f8\u4f5c\u6210\u306e\u57fa\u76e4\u3068\u3057\u3066\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong>\u5354\u50cd\u3092\u4fc3\u9032\u3059\u308b\uff1a<\/strong>DFD\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306b\u3064\u3044\u3066\u306e\u5171\u6709\u7406\u89e3\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067\u3001\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u9593\u306e\u5354\u50cd\u3092\u4fc3\u9032\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<h2>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306e\u4f5c\u6210\uff1a<\/h2>\n<p><img alt=\"Data Flow Diagram: The Top-Down Decomposition Technique\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2023\/03\/17-balancing-dfd.png\"\/><\/p>\n<p>DFD\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u624b\u9806\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n<ol>\n<li><strong>\u30d7\u30ed\u30bb\u30b9\u3068\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3092\u7279\u5b9a\u3059\u308b\uff1a<\/strong>DFD\u3092\u4f5c\u6210\u3059\u308b\u6700\u521d\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306b\u95a2\u4e0e\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3068\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u306f\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u3068\u306e\u9762\u8ac7\u3084\u30b7\u30b9\u30c6\u30e0\u6587\u66f8\u306e\u5206\u6790\u3092\u901a\u3058\u3066\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u3092\u4f5c\u6210\u3059\u308b<\/strong>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3092\u5358\u4e00\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u3057\u3066\u793a\u3057\u3001\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3068\u306e\u76f8\u4e92\u4f5c\u7528\u3092\u8868\u3059\u3002\u3053\u308c\u306fDFD\u306e\u57fa\u76e4\u3067\u3042\u308a\u3001\u6700\u521d\u306b\u4f5c\u6210\u3059\u3079\u304d\u3067\u3042\u308b\u3002<\/li>\n<li><strong>\u30ec\u30d9\u30eb0\u304a\u3088\u3073\u305d\u308c\u4ee5\u964d\u306eDFD\u306e\u30ec\u30d9\u30eb\u3092\u4f5c\u6210\u3059\u308b\uff1a<\/strong>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u3092\u4f5c\u6210\u3057\u305f\u5f8c\u3001\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u3068\u3057\u3066\u30ec\u30d9\u30eb0\u56f3\u3092\u4f5c\u6210\u3059\u308b\u3002\u3053\u308c\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u4e3b\u8981\u306a\u30d7\u30ed\u30bb\u30b9\u3092\u793a\u3059\u3002\u305d\u306e\u5f8c\u306e\u30ec\u30d9\u30eb\u3067\u306f\u3001\u5404\u30ec\u30d9\u30eb\u3067\u3088\u308a\u8a73\u7d30\u306a\u30d7\u30ed\u30bb\u30b9\u304c\u542b\u307e\u308c\u3001\u3088\u308a\u591a\u304f\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u30c7\u30fc\u30bf\u30b9\u30c8\u30a2\u304c\u8ffd\u52a0\u3055\u308c\u308b\u3002<\/li>\n<li><strong>DFD\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\uff1a<\/strong>DFD\u3092\u4f5c\u6210\u3059\u308b\u969b\u306b\u306f\u3001\u56f3\u304c\u7406\u89e3\u3057\u3084\u3059\u304f\u3001\u4f1d\u9054\u3057\u3084\u3059\u3044\u3088\u3046\u306b\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3092\u5b88\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3042\u308b\u3002\u3053\u308c\u306b\u306f\u3001\u660e\u78ba\u3067\u7c21\u6f54\u306a\u8868\u8a18\u3092\u4f7f\u7528\u3057\u3001\u4e0d\u8981\u306a\u8907\u96d1\u3055\u3092\u907f\u3051\u3001\u5168\u4f53\u3092\u901a\u3057\u3066\u4e00\u8cab\u3057\u305f\u8a18\u53f7\u3068\u898f\u5247\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u542b\u307e\u308c\u308b\u3002<\/li>\n<\/ol>\n<p>DFD\u306e\u8981\u7d20\u306b\u306f\u3001DFD\u306e\u7a2e\u985e\u3001DFD\u306e\u69cb\u7bc9\u30eb\u30fc\u30eb\u3001\u5229\u70b9\u304c\u542b\u307e\u308c\u308b<\/p>\n<h2>DFD\u3092\u4f5c\u6210\u3059\u308b\u624b\u9806<\/h2>\n<p>DFD\u3092\u4f5c\u6210\u3059\u308b\u306b\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306b\u95a2\u4e0e\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3068\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3092\u7279\u5b9a\u3057\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u3092\u4f5c\u6210\u3057\u3001\u30ec\u30d9\u30eb0\u304a\u3088\u3073\u305d\u308c\u4ee5\u964d\u306eDFD\u306e\u30ec\u30d9\u30eb\u3092\u4f5c\u6210\u3057\u3001DFD\u4f5c\u6210\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5f93\u3046\u5fc5\u8981\u304c\u3042\u308b\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u6642\u9593\u306e\u304b\u304b\u308b\u3082\u306e\u3060\u304c\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u5206\u6790\u3068\u8a2d\u8a08\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u30b9\u30c6\u30c3\u30d7\u3067\u3042\u308b\u3002DFD\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u4ee5\u4e0b\u306e\u624b\u9806\u304c\u3042\u308b\uff1a<\/p>\n<ol>\n<li><strong>\u30d7\u30ed\u30bb\u30b9\u3068\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u306e\u7279\u5b9a\uff1a<\/strong>\u6700\u521d\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306b\u95a2\u4e0e\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3068\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u3067\u3042\u308b\u3002\u3053\u308c\u306f\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u3068\u306e\u9762\u8ac7\u3084\u30b7\u30b9\u30c6\u30e0\u6587\u66f8\u306e\u5206\u6790\u3092\u901a\u3058\u3066\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u76ee\u7684\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u3059\u3079\u3066\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u3067\u3042\u308b\u3002<\/li>\n<li><strong>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306e\u4f5c\u6210\uff1a<\/strong>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3092\u5358\u4e00\u306e\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\u308c\u305f\u308a\u91cd\u8907\u3057\u305f\u308a\u3057\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3067\u304d\u308b\u3002DFD\u3067\u306f\u3001\u30d0\u30e9\u30f3\u30b9\u306f\u30d7\u30ed\u30bb\u30b9\u3078\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3068\u30d7\u30ed\u30bb\u30b9\u304b\u3089\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u304c\u7b49\u3057\u304f\u306a\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u8868\u73fe\u3055\u308c\u308b\u3002\u3082\u3057\u305d\u3046\u3067\u306a\u3051\u308c\u3070\u3001\u56f3\u306f\u30d0\u30e9\u30f3\u30b9\u304c\u53d6\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u306a\u308a\u3001\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n<h3>\u5206\u5272\uff1a<\/h3>\n<p>\u5206\u5272\u3068\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3092\u5206\u6790\u3084\u7ba1\u7406\u304c\u5225\u3005\u306b\u884c\u3048\u308b\u5c0f\u3055\u306a\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u306b\u5206\u3051\u308b\u30d7\u30ed\u30bb\u30b9\u3067\u3042\u308b\u3002DFD\u3067\u306f\u3001\u5206\u5272\u306f\u5404\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u306b\u5bfe\u3057\u3066\u5225\u3005\u306e\u56f3\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u8868\u73fe\u3055\u308c\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5404\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u306e\u3088\u308a\u8a73\u7d30\u306a\u5206\u6790\u304c\u53ef\u80fd\u3068\u306a\u308a\u3001\u6539\u5584\u3059\u3079\u304d\u9818\u57df\u3092\u7279\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u3002<\/p>\n<h3>\u62bd\u8c61\u5ea6\u306e\u30ec\u30d9\u30eb\uff1a<\/h3>\n<p><img alt=\"Data Flow Diagram (DFD) Software\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2023\/03\/dfd.png\"\/><\/p>\n<p>\u62bd\u8c61\u5ea6\u306e\u30ec\u30d9\u30eb\u3068\u306f\u3001DFD\u306b\u542b\u307e\u308c\u308b\u8a73\u7d30\u306e\u30ec\u30d9\u30eb\u3092\u6307\u3059\u3002\u9ad8\u3044\u62bd\u8c61\u5ea6\u306f\u8a73\u7d30\u304c\u5c11\u306a\u304f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u3088\u308a\u4e00\u822c\u7684\u306a\u6982\u8981\u3092\u63d0\u4f9b\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001\u4f4e\u3044\u62bd\u8c61\u5ea6\u306f\u3088\u308a\u591a\u304f\u306e\u8a73\u7d30\u3092\u542b\u307f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u3088\u308a\u5177\u4f53\u7684\u306a\u30d3\u30e5\u30fc\u3092\u63d0\u4f9b\u3059\u308b\u3002DFD\u3067\u306f\u3001\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u56f3\u304c\u6700\u3082\u9ad8\u3044\u62bd\u8c61\u5ea6\u3067\u3042\u308a\u3001\u305d\u306e\u5f8c\u306e\u56f3\u306f\u3088\u308a\u4f4e\u3044\u62bd\u8c61\u5ea6\u3067\u3088\u308a\u8a73\u7d30\u306a\u60c5\u5831\u3092\u63d0\u4f9b\u3059\u308b\u3002<\/p>\n<p>\u5206\u89e3\u3001\u30d0\u30e9\u30f3\u30b9\u3001\u5206\u5272\u3001\u62bd\u8c61\u5ea6\u306e\u30ec\u30d9\u30eb\u3068\u3044\u3063\u305fDFD\u306e\u9ad8\u5ea6\u306a\u6982\u5ff5\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u6210\u8981\u7d20\u3068\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3092\u8a73\u7d30\u306b\u793a\u3059\u3088\u308a\u8907\u96d1\u3067\u5305\u62ec\u7684\u306a\u56f3\u3092\u4f5c\u6210\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u3002\u3053\u308c\u3089\u306e\u9ad8\u5ea6\u306a\u6982\u5ff5\u306f\u3001\u6539\u5584\u3059\u3079\u304d\u9818\u57df\u3092\u7279\u5b9a\u3057\u3001\u52b9\u679c\u7684\u306a\u30b7\u30b9\u30c6\u30e0\u5206\u6790\u3068\u7ba1\u7406\u3092\u4fc3\u9032\u3059\u308b\u3002<\/p>\n<h2>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u30c4\u30fc\u30eb<\/h2>\n<p>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\uff08DFD\uff09\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u30c4\u30fc\u30eb\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u6b63\u78ba\u3067\u52b9\u679c\u7684\u306a\u56f3\u3092\u52b9\u7387\u7684\u306b\u4f5c\u6210\u3067\u304d\u308b\u305f\u3081\u91cd\u8981\u3067\u3042\u308b\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001DFD\u7528\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30c4\u30fc\u30eb\u306e\u6982\u8981\u3092\u7d39\u4ecb\u3057\u3001\u3055\u307e\u3056\u307e\u306a\u30c4\u30fc\u30eb\u3092\u6bd4\u8f03\u3057\u3001\u3042\u306a\u305f\u306eDFD\u306e\u30cb\u30fc\u30ba\u306b\u5408\u3063\u305f\u9069\u5207\u306a\u30c4\u30fc\u30eb\u3092\u9078\u3076\u305f\u3081\u306e\u30d2\u30f3\u30c8\u3092\u63d0\u4f9b\u3059\u308b\u3002<\/p>\n<p>DFD\u7528\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30c4\u30fc\u30eb\u306e\u6982\u8981\uff1a<\/p>\n<p>DFD\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30c4\u30fc\u30eb\u306f\u3044\u304f\u3064\u304b\u3042\u308a\u3001\u305d\u306e\u4e2d\u3067\u4eba\u6c17\u306e\u3042\u308b\u3082\u306e\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308b\u3002<\/p>\n<ol>\n<li><strong>Microsoft Visio\uff1a<\/strong>Microsoft Visio\u306f\u3001DFD\u4f5c\u6210\u306b\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u5f37\u529b\u306a\u56f3\u8868\u4f5c\u6210\u30c4\u30fc\u30eb\u3067\u3042\u308b\u3002\u52b9\u679c\u7684\u306a\u56f3\u8868\u3092\u4f5c\u6210\u3057\u3084\u3059\u3044\u3088\u3046\u306b\u3001\u3055\u307e\u3056\u307e\u306a\u6a5f\u80fd\u3068\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u3002<\/li>\n<li><strong>Visual Paradigm Online\uff1a<\/strong> <a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/dfd-maker\/\">Visual Paradigm Online<\/a>\u306f\u30af\u30e9\u30a6\u30c9\u30d9\u30fc\u30b9\u306e\u56f3\u8868\u4f5c\u6210\u30c4\u30fc\u30eb\u3067\u3042\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u304cDFD\u3084\u305d\u306e\u4ed6\u306e\u56f3\u8868\u3092\u4f5c\u6210\u3067\u304d\u308b\u3002\u9ad8\u54c1\u8cea\u306a\u56f3\u8868\u3092\u4f5c\u6210\u3057\u3084\u3059\u3044\u3088\u3046\u306b\u3001\u3055\u307e\u3056\u307e\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3068\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u3002<\/li>\n<li><strong>Visual Paradigm Desktop\uff1a<\/strong> <a href=\"https:\/\/www.visual-paradigm.com\/features\/data-flow-diagram-tool\/\">Visual Paradigm<\/a>\u306f\u5f37\u529b\u306a\u56f3\u8868\u4f5c\u6210\u30c4\u30fc\u30eb\u3067\u3042\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u304cDFD\u3084\u305d\u306e\u4ed6\u306e\u56f3\u8868\u3092\u4f5c\u6210\u3067\u304d\u308b\u3002\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u306a\u5916\u89b3\u306e\u56f3\u8868\u3092\u4f5c\u6210\u3057\u3084\u3059\u3044\u3088\u3046\u306b\u3001\u3055\u307e\u3056\u307e\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3068\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u3002<\/li>\n<\/ol>\n<h3>\u3055\u307e\u3056\u307e\u306a\u30c4\u30fc\u30eb\u306e\u6bd4\u8f03\uff1a<\/h3>\n<p>DFD\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u30c4\u30fc\u30eb\u3092\u9078\u3076\u969b\u306b\u306f\u3001\u81ea\u5206\u306e\u30cb\u30fc\u30ba\u306b\u6700\u3082\u5408\u3063\u305f\u30c4\u30fc\u30eb\u3092\u898b\u3064\u3051\u308b\u305f\u3081\u306b\u3001\u3055\u307e\u3056\u307e\u306a\u30c4\u30fc\u30eb\u3092\u6bd4\u8f03\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3042\u308b\u3002\u30c4\u30fc\u30eb\u3092\u6bd4\u8f03\u3059\u308b\u969b\u306e\u691c\u8a0e\u9805\u76ee\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308b\u3002<\/p>\n<ol>\n<li><strong>\u4f7f\u3044\u3084\u3059\u3055\uff1a<\/strong>\u30c4\u30fc\u30eb\u306f\u4f7f\u3044\u3084\u3059\u304f\u3001\u76f4\u611f\u7684\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u660e\u78ba\u306a\u8aac\u660e\u3092\u5099\u3048\u3066\u3044\u308b\u3079\u304d\u3067\u3042\u308b\u3002<\/li>\n<li><strong>\u6a5f\u80fd\u306e\u8c4a\u5bcc\u3055\uff1a<\/strong>\u30c4\u30fc\u30eb\u306f\u3001\u56f3\u306b\u8a18\u53f7\u3001\u30e9\u30d9\u30eb\u3001\u305d\u306e\u4ed6\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3067\u304d\u308b\u3088\u3046\u306b\u3001DFD\u4f5c\u6210\u306b\u5f79\u7acb\u3064\u3055\u307e\u3056\u307e\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u3079\u304d\u3067\u3042\u308b\u3002<\/li>\n<li><strong>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\uff1a<\/strong>\u30c4\u30fc\u30eb\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u306eDFD\u306b\u9069\u3057\u305f\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u591a\u6570\u63d0\u4f9b\u3059\u3079\u304d\u3067\u3042\u308b\u3002<\/li>\n<li><strong>\u30b3\u30b9\u30c8\uff1a<\/strong>\u30c4\u30fc\u30eb\u306e\u30b3\u30b9\u30c8\u3001\u5305\u62ec\u3057\u3066\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u6599\u306a\u3069\u306e\u7d99\u7d9a\u7684\u306a\u8cbb\u7528\u3082\u542b\u3081\u3066\u691c\u8a0e\u3059\u3079\u304d\u3067\u3042\u308b\u3002<\/li>\n<li><strong>\u7d71\u5408\u6027\uff1a<\/strong>\u30c4\u30fc\u30eb\u306f\u3001\u7d44\u7e54\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u4ed6\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30c4\u30fc\u30eb\u3001\u305f\u3068\u3048\u3070\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u7ba1\u7406\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3084\u4ed6\u306e\u56f3\u8868\u4f5c\u6210\u30c4\u30fc\u30eb\u3068\u9023\u643a\u3067\u304d\u308b\u3079\u304d\u3067\u3042\u308b\u3002<\/li>\n<\/ol>\n<h3>DFD\u7528\u30c4\u30fc\u30eb\u3092\u9078\u3076\u305f\u3081\u306e\u30d2\u30f3\u30c8\uff1a<\/h3>\n<p>DFD\u4f5c\u6210\u7528\u306e\u30c4\u30fc\u30eb\u3092\u9078\u3076\u969b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u30d2\u30f3\u30c8\u3092\u691c\u8a0e\u3059\u308b\u3002<\/p>\n<ol>\n<li><strong>\u30cb\u30fc\u30ba\u3092\u660e\u78ba\u306b\u3059\u308b<\/strong>\uff1a\u7d44\u7e54\u306e\u5177\u4f53\u7684\u306a\u30cb\u30fc\u30ba\u3092\u7279\u5b9a\u3059\u308b\u3002DFD\u306e\u7a2e\u985e\u3001\u30e6\u30fc\u30b6\u30fc\u6570\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u5c02\u9580\u77e5\u8b58\u306e\u30ec\u30d9\u30eb\u306a\u3069\u3092\u542b\u3080\u3002<\/li>\n<li><strong>\u6a5f\u80fd\u3092\u691c\u8a0e\u3059\u308b\uff1a<\/strong>\uff1a\u52b9\u679c\u7684\u306aDFD\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u6a5f\u80fd\u3001\u305f\u3068\u3048\u3070\u8a18\u53f7\u3001\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3001\u30e9\u30d9\u30eb\u3084\u305d\u306e\u4ed6\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3067\u304d\u308b\u6a5f\u80fd\u3092\u5099\u3048\u305f\u30c4\u30fc\u30eb\u3092\u63a2\u3059\u3002<\/li>\n<li><strong>\u8cfc\u5165\u524d\u306b\u8a66\u3059\uff1a<\/strong>\u591a\u304f\u306e\u30c4\u30fc\u30eb\u304c\u7121\u6599\u30c8\u30e9\u30a4\u30a2\u30eb\u3084\u30c7\u30e2\u3092\u63d0\u4f9b\u3057\u3066\u304a\u308a\u3001\u8cfc\u5165\u524d\u306b\u30c4\u30fc\u30eb\u3092\u8a66\u7528\u3067\u304d\u308b\u3002<\/li>\n<li><strong>\u30e6\u30fc\u30b6\u30fc\u306e\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u53ce\u96c6\u3059\u308b\uff1a<\/strong>\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u306b\u610f\u898b\u3084\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u6c42\u3081\u308b\u3053\u3068\u3067\u3001\u30c4\u30fc\u30eb\u304c\u305d\u306e\u30cb\u30fc\u30ba\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/li>\n<li><strong>\u30b5\u30dd\u30fc\u30c8\u3068\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3092\u691c\u8a0e\u3059\u308b\uff1a<\/strong>\u30e6\u30fc\u30b6\u30fc\u304c\u8fc5\u901f\u306b\u7fd2\u5f97\u3067\u304d\u308b\u3088\u3046\u306b\u30b5\u30dd\u30fc\u30c8\u3084\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3092\u63d0\u4f9b\u3059\u308b\u30c4\u30fc\u30eb\u3092\u63a2\u3059\u3053\u3068\u3067\u3001\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u554f\u984c\u3092\u89e3\u6c7a\u3067\u304d\u308b\u3002<\/li>\n<\/ol>\n<p>DFD\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u9069\u5207\u306a\u30c4\u30fc\u30eb\u3092\u9078\u3076\u3053\u3068\u306f\u3001\u56f3\u306e\u52b9\u679c\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u91cd\u8981\u306a\u6c7a\u5b9a\u3067\u3042\u308b\u3002\u3055\u307e\u3056\u307e\u306a\u30c4\u30fc\u30eb\u306e\u6a5f\u80fd\u3001\u4f7f\u3044\u3084\u3059\u3055\u3001\u30b3\u30b9\u30c8\u3092\u691c\u8a0e\u3059\u308b\u3053\u3068\u3067\u3001\u7d44\u7e54\u306f\u81ea\u8eab\u306e\u30cb\u30fc\u30ba\u306b\u6700\u3082\u5408\u3063\u305f\u30c4\u30fc\u30eb\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u6b63\u78ba\u3067\u52b9\u679c\u7684\u306aDFD\u3092\u4f5c\u6210\u3059\u308b\u624b\u52a9\u3051\u3068\u306a\u308b\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<div class=\"flex-1 overflow-hidden\">\n<div class=\"react-scroll-to-bottom--css-znmoj-79elbk h-full dark:bg-gray-800\">\n<div class=\"react-scroll-to-bottom--css-znmoj-1n7m0yu\">\n<div class=\"flex flex-col items-center text-sm dark:bg-gray-800\">\n<div class=\"w-full border-b border-black\/10 dark:border-gray-900\/50 text-gray-800 dark:text-gray-100 group bg-gray-50 dark:bg-[#444654]\">\n<div class=\"text-base gap-4 md:gap-6 m-auto md:max-w-2xl lg:max-w-2xl xl:max-w-3xl p-4 md:py-6 flex lg:px-0\">\n<div class=\"relative flex w-[calc(100%-50px)] flex-col gap-1 md:gap-3 lg:w-[calc(100%-115px)]\">\n<div class=\"flex flex-grow flex-col gap-3\">\n<div class=\"min-h-[20px] flex flex-col items-start gap-4 whitespace-pre-wrap\">\n<div class=\"markdown prose w-full break-words dark:prose-invert dark\">\n<p>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\uff08DFD\uff09\u306f\u3001\u8907\u96d1\u306a\u30b7\u30b9\u30c6\u30e0\u3092\u7406\u89e3\u3057\u3001\u6587\u66f8\u5316\u3059\u308b\u305f\u3081\u306e\u8cb4\u91cd\u306a\u30c4\u30fc\u30eb\u3067\u3042\u308b\u3002\u30b7\u30b9\u30c6\u30e0\u3068\u305d\u306e\u69cb\u6210\u8981\u7d20\u3092\u660e\u78ba\u304b\u3064\u7c21\u6f54\u306b\u8868\u73fe\u3067\u304d\u308b\u305f\u3081\u3001\u7406\u89e3\u3084\u4f1d\u9054\u304c\u5bb9\u6613\u306b\u306a\u308b\u3002<\/p>\n<ul>\n<li>DFD\u306e\u4f5c\u6210\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5f93\u3044\u3001\u9069\u5207\u306a\u8a18\u53f7\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u3092\u6b63\u78ba\u306b\u8868\u73fe\u3059\u308b\u52b9\u679c\u7684\u306a\u56f3\u3092\u4f5c\u6210\u3067\u304d\u308b\u3002\u307e\u305f\u3001DFD\u306e\u4f5c\u6210\u3084\u7ba1\u7406\u3092\u652f\u63f4\u3059\u308b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30c4\u30fc\u30eb\u3082\u591a\u6570\u5b58\u5728\u3059\u308b\u3002<\/li>\n<li>DFD\u306e\u7a2e\u985e\u3001\u4f5c\u6210\u306e\u30eb\u30fc\u30eb\u3001\u5206\u89e3\u3084\u30d0\u30e9\u30f3\u30b9\u3068\u3044\u3063\u305f\u9ad8\u5ea6\u306a\u6982\u5ff5\u3092\u691c\u8a0e\u3059\u308b\u3053\u3068\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u8a73\u7d30\u3067\u6b63\u78ba\u306a\u8868\u73fe\u3092\u4f5c\u6210\u3067\u304d\u308b\u3002<\/li>\n<li>DFD\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u6539\u5584\u3059\u3079\u304d\u9818\u57df\u3092\u7279\u5b9a\u3057\u3001\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u9593\u306e\u5354\u529b\u3092\u4fc3\u9032\u3057\u3001\u4ed6\u306e\u30b7\u30b9\u30c6\u30e0\u6587\u66f8\u4f5c\u6210\u306e\u57fa\u76e4\u3092\u7bc9\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h2>DFD\u306b\u95a2\u3059\u308b\u30ea\u30bd\u30fc\u30b9<\/h2>\n<ul>\n<li><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/dfd-maker\/\">\u30aa\u30f3\u30e9\u30a4\u30f3\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u4f5c\u6210\u30c4\u30fc\u30eb<\/a><\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\">\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\uff08DFD\uff09\u3068\u306f\u4f55\u304b\uff1f DFD\u306e\u63cf\u304d\u65b9<\/a><\/li>\n<li class=\"LC20lb MBeuO DKV0Md\"><a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\">\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u3068\u306f\u4f55\u304b\uff1f<\/a><\/li>\n<\/ul>\n<p>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Data flow diagrams (DFDs) are visual representations that illustrate the flow of information within a system. They are used to describe the processes and data flows in a structured manner, and are useful in analyzing, designing, and documenting information systems.<\/p>\n","protected":false},"author":1,"featured_media":9994,"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-9993","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>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306e\u7fd2\u5f97\uff1a\u30b7\u30b9\u30c6\u30e0\u5206\u6790\u3068\u8a2d\u8a08\u306e\u5305\u62ec\u7684\u30ac\u30a4\u30c9 - \u30b5\u30a4\u30d0\u30fc\u30e1\u30c7\u30a3\u30a2\u30f3<\/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\/ja\/mastering-data-flow-diagrams-a-comprehensive-guide-to-system-analysis-and-design\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u306e\u7fd2\u5f97\uff1a\u30b7\u30b9\u30c6\u30e0\u5206\u6790\u3068\u8a2d\u8a08\u306e\u5305\u62ec\u7684\u30ac\u30a4\u30c9 - \u30b5\u30a4\u30d0\u30fc\u30e1\u30c7\u30a3\u30a2\u30f3\" \/>\n<meta property=\"og:description\" content=\"Data flow diagrams (DFDs) are visual representations that illustrate the flow of information within a system. 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