{"id":6375,"date":"2026-02-04T17:08:00","date_gmt":"2026-02-04T09:08:00","guid":{"rendered":"https:\/\/guides.visual-paradigm.com\/ja\/mastering-the-art-of-developing-use-case-diagrams-and-scenarios\/"},"modified":"2026-02-04T17:08:00","modified_gmt":"2026-02-04T09:08:00","slug":"mastering-the-art-of-developing-use-case-diagrams-and-scenarios","status":"publish","type":"post","link":"https:\/\/guides.visual-paradigm.com\/ja\/mastering-the-art-of-developing-use-case-diagrams-and-scenarios\/","title":{"rendered":"\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u56f3\u3068\u30b7\u30ca\u30ea\u30aa\u306e\u4f5c\u6210\u306e\u6280\u8853\u3092\u7fd2\u5f97\u3059\u308b"},"content":{"rendered":"<h2>\u306f\u3058\u3081\u306b<\/h2>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\">\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u56f3<\/a>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u56f3\u3068\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u30b7\u30ca\u30ea\u30aa\u306f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u304a\u3088\u3073\u30b7\u30b9\u30c6\u30e0\u5206\u6790\u306e\u5206\u91ce\u306b\u304a\u3051\u308b\u5fc5\u9808\u306e\u30c4\u30fc\u30eb\u3067\u3059\u3002\u3053\u308c\u3089\u306f\u30e6\u30fc\u30b6\u30fc\u304c\u30b7\u30b9\u30c6\u30e0\u3068\u3069\u306e\u3088\u3046\u306b\u3084\u308a\u53d6\u308a\u3059\u308b\u304b\u3092\u8996\u899a\u7684\u306b\u8868\u73fe\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u3055\u307e\u3056\u307e\u306a\u7d4c\u8def\u3084\u53ef\u80fd\u6027\u3092\u7406\u89e3\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u56f3\u306e\u4f5c\u6210\u30d7\u30ed\u30bb\u30b9\u3092\u691c\u8a0e\u3057\u3001\u8a73\u7d30\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u30b7\u30ca\u30ea\u30aa\u306e\u4f5c\u6210\u306e\u91cd\u8981\u6027\u306b\u3064\u3044\u3066\u6df1\u304f\u6398\u308a\u4e0b\u3052\u307e\u3059\u3002<\/p>\n<p><img alt=\"What is Use Case Diagram?\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/02-use-case-diagram-annotated.png\"\/><\/p>\n<h2>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u56f3\u306e\u4f5c\u6210<\/h2>\n<ol>\n<li><strong>\u30a2\u30af\u30bf\u30fc\u306e\u7279\u5b9a\uff1a<\/strong>\n<ul>\n<li>\u307e\u305a\u3001\u30d3\u30b8\u30cd\u30b9\u4ed5\u69d8\u66f8\u3092\u78ba\u8a8d\u3057\u3066\u95a2\u4e0e\u3059\u308b\u30a2\u30af\u30bf\u30fc\u3092\u7279\u5b9a\u3057\u307e\u3059\u3002\u30a2\u30af\u30bf\u30fc\u3068\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u3068\u3084\u308a\u53d6\u308a\u3059\u308b\u4e3b\u4f53\u306e\u3053\u3068\u3067\u3059\u3002<\/li>\n<li>\u9ad8\u30ec\u30d9\u30eb\u306e\u30a4\u30d9\u30f3\u30c8\u3092\u7279\u5b9a\u3057\u3001\u305d\u308c\u3089\u306e\u30a4\u30d9\u30f3\u30c8\u3068\u30a2\u30af\u30bf\u30fc\u304c\u3069\u306e\u3088\u3046\u306b\u305d\u308c\u3089\u3092\u958b\u59cb\u3059\u308b\u304b\u3092\u8aac\u660e\u3059\u308b\u4e3b\u8981\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306e\u5206\u6790\uff1a<\/strong>\n<ul>\n<li>\u5404\u30a2\u30af\u30bf\u30fc\u304c\u958b\u59cb\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u3059\u3079\u3066\u306e\u4e3b\u8981\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u7279\u5b9a\u3059\u308b\u305f\u3081\u306b\u3001\u30a2\u30af\u30bf\u30fc\u304c\u679c\u305f\u3059\u5f79\u5272\u3092\u614e\u91cd\u306b\u691c\u8a0e\u3057\u307e\u3059\u3002<\/li>\n<li>\u5404\u4e3b\u8981\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u691c\u8a0e\u3057\u3001\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u5185\u306e\u30d5\u30ed\u30fc\u306e\u5909\u5316\u3092\u7279\u5b9a\u3057\u3001\u4ee3\u66ff\u7d4c\u8def\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30ec\u30d9\u30eb\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\uff1a<\/strong>\n<ul>\n<li>\u5229\u7528\u53ef\u80fd\u306a\u5834\u5408\u3001\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u4f5c\u6210\u306e\u51fa\u767a\u70b9\u3068\u3057\u3066\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30ec\u30d9\u30eb\u306e\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u56f3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u56f3\u5185\u306e\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u3001\u6f5c\u5728\u7684\u306a\u30a2\u30af\u30bf\u30fc\u3068\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li>\u30c7\u30fc\u30bf\u30d5\u30ed\u30fc\u3092\u691c\u8a0e\u3057\u3001\u305d\u308c\u304c\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306e\u958b\u59cb\u3092\u5f15\u304d\u8d77\u3053\u3059\u304b\u3001\u307e\u305f\u306f\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u3088\u3063\u3066\u751f\u6210\u3055\u308c\u308b\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u4f8b\uff1a<\/strong>\n<ul>\n<li>\u63d0\u793a\u3055\u308c\u305f\u4f8b\u306f\u3001\u4f1a\u8b70\u8a08\u753b\u30b7\u30b9\u30c6\u30e0\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u56f3\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u4f1a\u8b70\u306e\u4e3b\u50ac\u8005\u3001\u53c2\u52a0\u8005\u3001\u30b9\u30d4\u30fc\u30ab\u30fc\u3001\u30db\u30c6\u30eb\u4e88\u7d04\u3001\u30b1\u30fc\u30bf\u30ea\u30f3\u30b0\u696d\u8005\u306a\u3069\u306e\u30a2\u30af\u30bf\u30fc\u3068\u3001\u305d\u308c\u305e\u308c\u306e\u5f79\u5272\u304c\u7279\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u30b7\u30ca\u30ea\u30aa\u306e\u4f5c\u6210<\/h2>\n<p><img alt=\"Select Open Use Case Details...\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2023\/10\/select_open_use_case_details_25099.png\"\/><\/p>\n<p id=\"mSxaXKh\">\n<ol>\n<li><strong>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306e\u8aac\u660e\uff1a<\/strong>\n<ul>\n<li>\u5404\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u306f\u3001\u6b21\u306e\u3082\u306e\u3068\u547c\u3070\u308c\u308b\u5bfe\u5fdc\u3059\u308b\u8aac\u660e\u304c\u3042\u308a\u307e\u3059\u3002<a 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