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class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Kawaii cute vector infographic explaining Use Case Models in software engineering with pastel colors: shows Actors (Primary, Secondary, Internal, External) as adorable character avatars, System Boundaries as a rounded box containing use case bubbles, and four Relationship types (Association, Generalization, Include, Extend) with labeled arrows, plus best practices checklist for creating clear system diagrams\" decoding=\"async\" src=\"https:\/\/www.diagrams-ai.com\/wp-content\/uploads\/2026\/04\/kawaii-use-case-model-infographic-actors-boundaries-relationships.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83d\udc65 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\u5916\u90e8<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u8981\u7d20<\/th>\n<th>\u5883\u754c\u304b\u3089\u306e\u76f8\u5bfe\u7684\u4f4d\u7f6e<\/th>\n<th>\u8cac\u4efb<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/td>\n<td>\u5185\u90e8<\/td>\n<td>\u30b7\u30b9\u30c6\u30e0\u304c\u5b9f\u884c\u3059\u308b\u6a5f\u80fd<\/td>\n<\/tr>\n<tr>\n<td>\u30a2\u30af\u30bf\u30fc<\/td>\n<td>\u5916\u90e8<\/td>\n<td>\u30b7\u30b9\u30c6\u30e0\u3068\u3084\u308a\u53d6\u308a\u3059\u308b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3<\/td>\n<\/tr>\n<tr>\n<td>\u95a2\u4fc2\u6027<\/td>\n<td>\u4ea4\u5dee<\/td>\n<td>\u30a2\u30af\u30bf\u30fc\u3068\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u9593\u306e\u901a\u4fe1\u30e9\u30a4\u30f3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5883\u754c\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u306f\u3001\u30a2\u30af\u30bf\u30fc\u3092\u7279\u5b9a\u3059\u308b\u3088\u308a\u3082\u3057\u3070\u3057\u3070\u56f0\u96e3\u3067\u3042\u308b\u3002\u5883\u754c\u304c\u5e83\u3059\u304e\u308b\u3068\u3001\u30e2\u30c7\u30eb\u306f\u3054\u3061\u3083\u3054\u3061\u3083\u306b\u306a\u308a\u3001\u7126\u70b9\u3092\u5931\u3046\u3002\u9006\u306b\u5883\u754c\u304c\u72ed\u3059\u304e\u308b\u3068\u3001\u5fc5\u8981\u306a\u4f9d\u5b58\u95a2\u4fc2\u304c\u6392\u9664\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u826f\u3044\u76ee\u5b89\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u8005\u307e\u305f\u306f\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u304c\u76f4\u63a5\u5236\u5fa1\u3067\u304d\u308b\u6a5f\u80fd\u306e\u307f\u3092\u542b\u3081\u308b\u3053\u3068\u3067\u3042\u308b\u3002<\/p>\n<h3>\u30b7\u30b9\u30c6\u30e0\u306e\u6587\u8108<\/h3>\n<p>\u5883\u754c\u306f\u307e\u305f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u6587\u8108\u3092\u5b9a\u7fa9\u3059\u308b\u3002\u30dc\u30c3\u30af\u30b9\u306e\u5916\u306b\u3042\u308b\u3059\u3079\u3066\u306e\u3082\u306e\u306f\u3001\u5916\u90e8\u4f9d\u5b58\u95a2\u4fc2\u307e\u305f\u306f\u74b0\u5883\u8981\u56e0\u3068\u898b\u306a\u3055\u308c\u308b\u3002\u3053\u306e\u533a\u5225\u306f\u3001\u969c\u5bb3\u30dd\u30a4\u30f3\u30c8\u3092\u5206\u6790\u3059\u308b\u969b\u306b\u6975\u3081\u3066\u91cd\u8981\u3067\u3042\u308b\u3002\u88dc\u52a9\u7684\u306a\u30a2\u30af\u30bf\u30fc\u304c\u5931\u6557\u3057\u305f\u5834\u5408\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u304c\u5931\u6557\u3059\u308b\u306e\u304b\u3001\u305d\u308c\u3068\u3082\u30a8\u30e9\u30fc\u3092\u51e6\u7406\u3067\u304d\u308b\u306e\u304b\u3002\u5883\u754c\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u5185\u90e8\u8ad6\u7406\u3092\u5916\u90e8\u306e\u5909\u52d5\u304b\u3089\u5206\u96e2\u3059\u308b\u3053\u3068\u3067\u3001\u3053\u308c\u3089\u306e\u554f\u3044\u306b\u7b54\u3048\u308b\u306e\u3092\u52a9\u3051\u308b\u3002<\/p>\n<h2>\ud83d\udd17 \u95a2\u4fc2\u6027\u306e\u30e2\u30c7\u30ea\u30f3\u30b0<\/h2>\n<p>\u95a2\u4fc2\u6027\u306f\u3001\u30a2\u30af\u30bf\u30fc\u3092\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u3001\u307e\u305f\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u4ed6\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u63a5\u7d9a\u3059\u308b\u3002\u3053\u308c\u3089\u306e\u7dda\u306f\u60c5\u5831\u3068\u5236\u5fa1\u306e\u6d41\u308c\u3092\u5b9a\u7fa9\u3059\u308b\u3002\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u30e2\u30c7\u30ea\u30f3\u30b0\u3067\u4f7f\u7528\u3055\u308c\u308b\u6a19\u6e96\u7684\u306a\u95a2\u4fc2\u6027\u306f4\u7a2e\u985e\u3042\u308b\u3002\u305d\u308c\u3089\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u8a2d\u8a08\u306b\u304a\u3051\u308b\u8ad6\u7406\u7684\u8aa4\u308a\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n<h3>1. \u95a2\u9023<\/h3>\n<p>\u95a2\u9023\u306f\u3001\u30a2\u30af\u30bf\u30fc\u3068\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u7d50\u3076\u5b9f\u7dda\u3067\u3042\u308b\u3002\u3053\u308c\u306f\u3001\u30a2\u30af\u30bf\u30fc\u304c\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3068\u3084\u308a\u53d6\u308a\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3059\u3002\u3053\u308c\u304c\u6700\u3082\u57fa\u672c\u7684\u306a\u95a2\u4fc2\u6027\u3067\u3042\u308b\u3002<\/p>\n<ul>\n<li><strong>\u65b9\u5411\u6027\uff1a<\/strong>\u77e2\u5370\u3092\u63cf\u304b\u306a\u3044\u3053\u3068\u304c\u591a\u3044\u304c\u3001\u95a2\u9023\u306f\u3001\u8ab0\u304c\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u958b\u59cb\u3059\u308b\u304b\u306b\u57fa\u3065\u3044\u3066\u65b9\u5411\u6027\u3092\u793a\u3059\u3053\u3068\u304c\u3042\u308b\u3002<\/li>\n<li><strong>\u591a\u91cd\u5ea6\uff1a<\/strong>\u30a2\u30af\u30bf\u30fc\u306f\u30011\u3064\u307e\u305f\u306f\u8907\u6570\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u95a2\u9023\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u540c\u69d8\u306b\u3001\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306f1\u4eba\u307e\u305f\u306f\u8907\u6570\u306e\u30a2\u30af\u30bf\u30fc\u306b\u3088\u3063\u3066\u958b\u59cb\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308b\u3002<\/li>\n<li><strong>\u4f7f\u7528\u6cd5\uff1a<\/strong>\u4e3b\u306a\u76f8\u4e92\u4f5c\u7528\u3092\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u3002\u30e6\u30fc\u30b6\u30fc\u304c\u300c\u30ed\u30b0\u30a4\u30f3\u300d\u3067\u304d\u308b\u5834\u5408\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30a2\u30af\u30bf\u30fc\u304b\u3089\u300c\u30ed\u30b0\u30a4\u30f3\u300d\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3078\u7dda\u3092\u5f15\u304f\u3002<\/li>\n<\/ul>\n<h3>2. \u6c4e\u5316\uff08\u7d99\u627f\uff09<\/h3>\n<p>\u6c4e\u5316\u306f\u300c\u301c\u306f\u301c\u3067\u3042\u308b\u300d\u95a2\u4fc2\u3092\u8868\u3059\u3002\u884c\u52d5\u306e\u518d\u5229\u7528\u3092\u53ef\u80fd\u306b\u3059\u308b\u3002\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u30e2\u30c7\u30ea\u30f3\u30b0\u3067\u306f\u30011\u3064\u306e\u30a2\u30af\u30bf\u30fc\u307e\u305f\u306f\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u304c\u5225\u306e\u3082\u306e\u3088\u308a\u3082\u7279\u6b8a\u5316\u3055\u308c\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3042\u308b\u5834\u5408\u306b\u4f7f\u7528\u3055\u308c\u308b\u3002<\/p>\n<ul>\n<li><strong>\u30a2\u30af\u30bf\u30fc\u306e\u6c4e\u5316\uff1a<\/strong>\u300c\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u300d\u304c\u300c\u5f93\u696d\u54e1\u300d\u306e\u7279\u6b8a\u5316\u3055\u308c\u305f\u30bf\u30a4\u30d7\u3067\u3042\u308b\u5834\u5408\u3001\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u30a2\u30af\u30bf\u30fc\u306f\u5f93\u696d\u54e1\u30a2\u30af\u30bf\u30fc\u306e\u95a2\u4fc2\u3092\u7d99\u627f\u3067\u304d\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u91cd\u8907\u304c\u524a\u6e1b\u3055\u308c\u308b\u3002<\/li>\n<li><strong>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306e\u6c4e\u5316\uff1a<\/strong>\u300c\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9\u3067\u652f\u6255\u3046\u300d\u304c\u300c\u652f\u6255\u3044\u3092\u884c\u3046\u300d\u306e\u7279\u5b9a\u306e\u65b9\u6cd5\u3067\u3042\u308b\u5834\u5408\u3001\u5177\u4f53\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306f\u4e00\u822c\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306e\u632f\u308b\u821e\u3044\u3092\u7d99\u627f\u3059\u308b\u3002\u30d7\u30ed\u30bb\u30b9\u306e\u8907\u6570\u306e\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306b\u6709\u7528\u3067\u3042\u308b\u3002<\/li>\n<\/ul>\n<h3>3. \u5305\u542b<\/h3>\n<p>\u5305\u542b\u95a2\u4fc2\u306f\u3001\u632f\u308b\u821e\u3044\u3092\u30e2\u30b8\u30e5\u30fc\u30eb\u5316\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u30021\u3064\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u304c\u3001\u5225\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306e\u632f\u308b\u821e\u3044\u3092\u5fc5\u9808\u306e\u30b9\u30c6\u30c3\u30d7\u3068\u3057\u3066\u7d44\u307f\u8fbc\u3080\u3053\u3068\u3092\u793a\u3059\u3002\u542b\u307e\u308c\u308b\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306f\u3001\u30d9\u30fc\u30b9\u3068\u306a\u308b\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u304c\u5b8c\u4e86\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u3067\u3042\u308b\u3002<\/p>\n<ul>\n<li><strong>\u30ad\u30fc\u30ef\u30fc\u30c9\uff1a<\/strong>\u901a\u5e38\u3001\u30ad\u30fc\u30ef\u30fc\u30c9\u300c&lt;&lt;include&gt;&gt;\u300d\u3067\u793a\u3055\u308c\u308b\u3002<\/li>\n<li><strong>\u30c8\u30ea\u30ac\u30fc\uff1a<\/strong>\u30d9\u30fc\u30b9\u3068\u306a\u308b\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306f\u5e38\u306b\u542b\u307e\u308c\u308b\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u547c\u3073\u51fa\u3059\u3002<\/li>\n<li><strong>\u4f8b\uff1a<\/strong>\u300c\u6ce8\u6587\u3092\u78ba\u5b9a\u3059\u308b\u300d\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306f\u300c\u5728\u5eab\u3092\u691c\u8a3c\u3059\u308b\u300d\u3092\u542b\u3080\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u5728\u5eab\u306e\u78ba\u8a8d\u304c\u306a\u3051\u308c\u3070\u6ce8\u6587\u306f\u78ba\u5b9a\u3067\u304d\u306a\u3044\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u306e\u95a2\u4fc2\u306f\u5fc5\u9808\u3067\u3042\u308b\u3002<\/li>\n<li><strong>\u5229\u70b9\uff1a<\/strong> \u518d\u5229\u7528\u6027\u3092\u4fc3\u9032\u3057\u307e\u3059\u3002 \u300c\u5728\u5eab\u691c\u8a3c\u300d\u304c3\u3064\u306e\u7570\u306a\u308b\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3067\u5fc5\u8981\u3068\u3055\u308c\u308b\u5834\u5408\u3001\u4e00\u5ea6\u5b9a\u7fa9\u3057\u3066\u3059\u3079\u3066\u306e3\u3064\u306b\u542b\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>4. \u62e1\u5f35<\/h3>\n<p>\u62e1\u5f35\u95a2\u4fc2\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u52d5\u4f5c\u3092\u8868\u3057\u307e\u3059\u3002\u7279\u5b9a\u306e\u6761\u4ef6\u4e0b\u3067\u3001\u30d9\u30fc\u30b9\u3068\u306a\u308b\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u304c\u5225\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u3088\u3063\u3066\u62e1\u5f35\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002include\u3068\u306f\u7570\u306a\u308a\u3001\u62e1\u5f35\u3055\u308c\u305f\u52d5\u4f5c\u306f\u30d9\u30fc\u30b9\u3068\u306a\u308b\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u304c\u6a5f\u80fd\u3059\u308b\u305f\u3081\u306b\u5fc5\u9808\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<ul>\n<li><strong>\u30ad\u30fc\u30ef\u30fc\u30c9\uff1a<\/strong> \u901a\u5e38\u3001\u30ad\u30fc\u30ef\u30fc\u30c9 &lt;&lt;extend&gt;&gt; \u3067\u793a\u3055\u308c\u307e\u3059\u3002<\/li>\n<li><strong> \u30c8\u30ea\u30ac\u30fc\uff1a<\/strong> \u62e1\u5f35\u306f\u3001\u7279\u5b9a\u306e\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u305f\u5834\u5408\u306b\u306e\u307f\u767a\u751f\u3057\u307e\u3059\u3002<\/li>\n<li><strong> \u4f8b\uff1a<\/strong> \u300c\u6ce8\u6587\u3092\u78ba\u5b9a\u300d\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306f\u300c\u5272\u5f15\u3092\u9069\u7528\u300d\u306b\u3088\u3063\u3066\u62e1\u5f35\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u5272\u5f15\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30af\u30fc\u30dd\u30f3\u30b3\u30fc\u30c9\u3092\u6301\u3063\u3066\u3044\u308b\u5834\u5408\u306b\u306e\u307f\u9069\u7528\u3055\u308c\u307e\u3059\u3002\u5272\u5f15\u304c\u7121\u304f\u3066\u3082\u6ce8\u6587\u306f\u4f9d\u7136\u3068\u3057\u3066\u78ba\u5b9a\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong> \u65b9\u5411\uff1a<\/strong> \u77e2\u5370\u306e\u65b9\u5411\u306f\u3001\u62e1\u5f35\u3059\u308b\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u304b\u3089\u30d9\u30fc\u30b9\u3068\u306a\u308b\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3078\u5411\u304b\u3046\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306finclude\u95a2\u4fc2\u3068\u306f\u9006\u3067\u3059\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udcca \u95a2\u4fc2\u306e\u7a2e\u985e\u306e\u8981\u7d04<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u95a2\u4fc2<\/th>\n<th>\u77e2\u5370\u306e\u65b9\u5411<\/th>\n<th>\u6761\u4ef6<\/th>\n<th>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u95a2\u9023<\/td>\n<td>\u306a\u3057 \/ \u53cc\u65b9\u5411<\/td>\n<td>\u76f8\u4e92\u4f5c\u7528<\/td>\n<td>\u30a2\u30af\u30bf\u30fc\u304c\u884c\u52d5\u3092\u958b\u59cb<\/td>\n<\/tr>\n<tr>\n<td>\u4e00\u822c\u5316<\/td>\n<td>\u30d9\u30fc\u30b9\u304b\u3089\u6d3e\u751f<\/td>\n<td>\u7d99\u627f<\/td>\n<td>\u52d5\u4f5c\u306e\u7279\u6b8a\u5316<\/td>\n<\/tr>\n<tr>\n<td>\u5305\u542b<\/td>\n<td>\u30d9\u30fc\u30b9\u304b\u3089\u542b\u307e\u308c\u308b<\/td>\n<td>\u5fc5\u9808<\/td>\n<td>\u5fc5\u9808\u306e\u30b5\u30d6\u6a5f\u80fd<\/td>\n<\/tr>\n<tr>\n<td>\u62e1\u5f35<\/td>\n<td>\u57fa\u672c\u3078\u306e\u62e1\u5f35<\/td>\n<td>\u30aa\u30d7\u30b7\u30e7\u30f3<\/td>\n<td>\u6761\u4ef6\u4ed8\u304d\u30b5\u30d6\u6a5f\u80fd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u2705 \u660e\u78ba\u6027\u306e\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n<p>Use Case\u30e2\u30c7\u30eb\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u306f\u3001\u7bb1\u3068\u7dda\u3092\u63cf\u304f\u3053\u3068\u3060\u3051\u3067\u306f\u306a\u304f\u3001\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u305f\u3081\u306e\u3082\u306e\u3067\u3059\u3002\u56f3\u306f\u958b\u767a\u8005\u3001\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u3001\u30c6\u30b9\u30c8\u62c5\u5f53\u8005\u3059\u3079\u3066\u304c\u7406\u89e3\u3067\u304d\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u5b88\u308b\u3053\u3068\u3067\u3001\u30e2\u30c7\u30eb\u304c\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u5168\u4f53\u3092\u901a\u3058\u3066\u6709\u7528\u306a\u53c2\u7167\u8cc7\u6599\u306e\u307e\u307e\u4fdd\u305f\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>Use Case\u3092\u539f\u5b50\u7684\u306b\u4fdd\u3064\uff1a<\/strong> \u5404Use Case\u306f\u3001\u30a2\u30af\u30bf\u30fc\u306e\u8996\u70b9\u304b\u3089\u898b\u305f\u5358\u4e00\u3067\u5b8c\u5168\u306a\u6a5f\u80fd\u5358\u4f4d\u3092\u8868\u3059\u3079\u304d\u3067\u3059\u3002\u95a2\u4fc2\u306e\u306a\u3044\u30a2\u30af\u30b7\u30e7\u30f3\u30921\u3064\u306eUse Case\u306b\u307e\u3068\u3081\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002Use Case\u304c\u8907\u96d1\u306b\u306a\u308a\u3059\u304e\u305f\u5834\u5408\u306f\u3001\u5206\u5272\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u884c\u52d5\u6307\u5411\u306e\u547d\u540d\u3092\u4f7f\u7528\u3059\u308b\uff1a<\/strong> Use Case\u306e\u540d\u524d\u306f\u52d5\u8a5e\uff0b\u540d\u8a5e\u306e\u8868\u73fe\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305f\u3068\u3048\u3070\u3001\u300cRefund\u300d\u3088\u308a\u3082\u300cRefund\u306e\u51e6\u7406\u300d\u306e\u65b9\u304c\u826f\u3044\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u30a2\u30af\u30b7\u30e7\u30f3\u304c\u660e\u78ba\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u30a2\u30af\u30bf\u30fc\u6570\u3092\u5236\u9650\u3059\u308b\uff1a<\/strong> \u30a2\u30af\u30bf\u30fc\u304c\u591a\u3059\u304e\u308b\u3068\u56f3\u304c\u8aad\u307f\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002\u985e\u4f3c\u3057\u305f\u30a2\u30af\u30bf\u30fc\u304c\u591a\u6570\u3042\u308b\u5834\u5408\u306f\u3001\u4e00\u822c\u5316\u95a2\u4fc2\u3092\u4f7f\u3063\u3066\u30b0\u30eb\u30fc\u30d7\u5316\u3059\u308b\u3053\u3068\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u76ee\u7684\u306b\u7126\u70b9\u3092\u5f53\u3066\u308b\uff1a<\/strong> Use Case\u306f\u3001\u30a2\u30af\u30bf\u30fc\u304c\u76ee\u7684\u3092\u9054\u6210\u3059\u308b\u65b9\u6cd5\u3092\u8a18\u8ff0\u3057\u307e\u3059\u3002\u30a2\u30af\u30bf\u30fc\u304c\u898b\u3048\u306a\u3044\u5185\u90e8\u30b7\u30b9\u30c6\u30e0\u30d7\u30ed\u30bb\u30b9\u3092\u30e2\u30c7\u30eb\u5316\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u30b7\u30b9\u30c6\u30e0\u306e\u5916\u90e8\u8996\u70b9\u306b\u96c6\u4e2d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u5b9a\u671f\u7684\u306b\u53cd\u5fa9\u3059\u308b\uff1a<\/strong> Use Case\u30e2\u30c7\u30eb\u306f\u521d\u7a3f\u3067\u5b8c\u74a7\u306a\u3053\u3068\u306f\u3081\u3063\u305f\u306b\u3042\u308a\u307e\u305b\u3093\u3002\u8981\u4ef6\u304c\u9032\u5316\u3059\u308b\u306b\u3064\u308c\u3066\u3001\u56f3\u3092\u66f4\u65b0\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306f\u751f\u304d\u3066\u3044\u308b\u6587\u66f8\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<h2>\u26a0\ufe0f \u907f\u3051\u308b\u3079\u304d\u4e00\u822c\u7684\u306a\u843d\u3068\u3057\u7a74<\/h2>\n<p>\u7d4c\u9a13\u8c4a\u5bcc\u306a\u30e2\u30c7\u30e9\u30fc\u3067\u3082\u3001\u56f3\u306e\u4fa1\u5024\u3092\u4f4e\u4e0b\u3055\u305b\u308b\u7f60\u306b\u306f\u307e\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u30df\u30b9\u306b\u6c17\u3065\u3044\u3066\u304a\u304f\u3053\u3068\u3067\u3001\u54c1\u8cea\u3092\u7dad\u6301\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>Include\u3068Extend\u3092\u6df7\u540c\u3059\u308b\uff1a<\/strong> \u3053\u308c\u304c\u6700\u3082\u983b\u7e41\u306a\u30df\u30b9\u3067\u3059\u3002\u601d\u3044\u51fa\u3057\u3066\u304f\u3060\u3055\u3044\uff1aInclude\u306f\u5fc5\u9808\uff08\u5fc5\u305a\u767a\u751f\u3059\u308b\uff09\u3001Extend\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\uff08\u767a\u751f\u3059\u308b\u304b\u3082\u3057\u308c\u306a\u3044\uff09\u3002\u78ba\u4fe1\u304c\u6301\u3066\u306a\u3044\u5834\u5408\u306f\u3001\u57fa\u672cUse Case\u304c2\u756a\u76ee\u306eUse Case\u306a\u3057\u3067\u5b8c\u4e86\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u30a2\u30af\u30bf\u30fc\u3092\u5883\u754c\u5185\u306b\u914d\u7f6e\u3059\u308b\uff1a<\/strong> \u30a2\u30af\u30bf\u30fc\u306f\u5e38\u306b\u30b7\u30b9\u30c6\u30e0\u30dc\u30c3\u30af\u30b9\u306e\u5916\u306b\u5b58\u5728\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u30a2\u30af\u30bf\u30fc\u304c\u30dc\u30c3\u30af\u30b9\u5185\u306b\u3042\u308b\u5834\u5408\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3042\u308a\u3001\u5916\u90e8\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3067\u306f\u306a\u3044\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3067\u3059\u3002<\/li>\n<li><strong>\u6a5f\u80fd\u306e\u91cd\u8907\uff1a<\/strong> 2\u3064\u306eUse Case\u304c\u307e\u3063\u305f\u304f\u540c\u3058\u3053\u3068\u3092\u3059\u308b\u5834\u5408\u306f\u3001\u7d71\u5408\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5197\u9577\u6027\u306f\u8aad\u8005\u3092\u6df7\u4e71\u3055\u305b\u3001\u4fdd\u5b88\u3092\u8907\u96d1\u306b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u975e\u6a5f\u80fd\u8981\u4ef6\u3092\u7121\u8996\u3059\u308b\uff1a<\/strong> Use Case\u56f3\u306f\u6a5f\u80fd\u6027\u306b\u7126\u70b9\u3092\u5f53\u3066\u308b\u4e00\u65b9\u3067\u3001\u5236\u7d04\uff08\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306a\u3069\uff09\u304c\u8a2d\u8a08\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3053\u3068\u304c\u591a\u3044\u3053\u3068\u3092\u5ff5\u982d\u306b\u7f6e\u3044\u3066\u304f\u3060\u3055\u3044\u3002\u30d5\u30ed\u30fc\u306e\u4e00\u90e8\u3067\u306a\u3044\u5834\u5408\u306f\u3001\u3053\u308c\u3089\u3092\u5225\u9014\u6587\u66f8\u5316\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u66d6\u6627\u306a\u8a18\u8ff0\uff1a<\/strong> \u56f3\u3060\u3051\u306b\u983c\u3063\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002Use Case\u306b\u306f\u3001\u4e8b\u524d\u6761\u4ef6\u3001\u4e8b\u5f8c\u6761\u4ef6\u3001\u4e3b\u306a\u30a4\u30d9\u30f3\u30c8\u30d5\u30ed\u30fc\u3092\u8a73\u7d30\u306b\u8a18\u8ff0\u3057\u305f\u30c6\u30ad\u30b9\u30c8\u8aac\u660e\u3092\u4ed8\u3051\u308b\u3079\u304d\u3067\u3059\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udcdd \u6700\u7d42\u7684\u306a\u8003\u616e\u4e8b\u9805<\/h2>\n<p>Use 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