{"id":2029,"date":"2026-08-07T09:53:28","date_gmt":"2026-08-07T09:53:28","guid":{"rendered":"https:\/\/www.ez-knowledge.com\/ja\/mastering-uml-sequence-diagrams-a-comprehensive-guide-to-modeling-dynamic-interactions\/"},"modified":"2026-08-07T09:53:28","modified_gmt":"2026-08-07T09:53:28","slug":"mastering-uml-sequence-diagrams-a-comprehensive-guide-to-modeling-dynamic-interactions","status":"publish","type":"post","link":"https:\/\/www.ez-knowledge.com\/ja\/mastering-uml-sequence-diagrams-a-comprehensive-guide-to-modeling-dynamic-interactions\/","title":{"rendered":"UML\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e\u7fd2\u5f97\uff1a\u52d5\u7684\u76f8\u4e92\u4f5c\u7528\u3092\u30e2\u30c7\u30eb\u5316\u3059\u308b\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9"},"content":{"rendered":"<h2>\u5c0e\u5165<\/h2>\n<p>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u5de5\u5b66\u304a\u3088\u3073\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u306e\u4e16\u754c\u3067\u306f\u3001\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059<em>\u3069\u306e\u3088\u3046\u306b<\/em>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u76f8\u4e92\u306b\u3069\u306e\u3088\u3046\u306b\u4f5c\u7528\u3059\u308b\u304b\u306f\u3001\u305d\u308c\u3089\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u4f55\u304b\u3092\u77e5\u308b\u3053\u3068\u3068\u540c\u7b49\u306b\u91cd\u8981\u3067\u3059<em>\u4f55\u3067\u3042\u308b\u304b<\/em>\u305d\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u4f55\u3067\u3042\u308b\u304b\u3067\u3059\u3002\u30af\u30e9\u30b9\u56f3\u306f\u30b7\u30b9\u30c6\u30e0\u69cb\u9020\u306e\u9759\u7684\u30d3\u30e5\u30fc\u3092\u63d0\u4f9b\u3059\u308b\u4e00\u65b9\u3067\u3001<strong><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/overview-of-the-14-uml-diagram-types\/\">UML<\/a> <a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-sequence-diagram\/\">\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3<\/a><\/strong><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-sequence-diagram\/\">\u00a0<\/a>\u306f<a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/behavior-vs-structural-diagram\/\">\u52d5\u7684\u306a\u8996\u70b9<\/a>\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u9593\u306e\u76f8\u4e92\u4f5c\u7528\u3092\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u6349\u3048\u308b\u3001\u64cd\u4f5c\u306e\u5b9f\u884c\u65b9\u6cd5\u3092\u8a73\u7d30\u306b\u793a\u3059\u76f8\u4e92\u4f5c\u7528\u56f3\u3067\u3059\u3002<\/p>\n<p>\u30d7\u30ed\u30c0\u30af\u30c8\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3084\u30a2\u30fc\u30ad\u30c6\u30af\u30c8\u3001\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u3001\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306f\u8ad6\u7406\u306e\u6d41\u308c\u3092\u53ef\u8996\u5316\u3057\u3001\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u7279\u5b9a\u3057\u3001\u8907\u96d1\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u304c\u6b63\u3057\u304f\u5b9f\u88c5\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001\u52b9\u679c\u7684\u306a\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u7684\u306a\u6982\u5ff5\u3001\u8868\u8a18\u6cd5\u3001\u304a\u3088\u3073\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u691c\u8a0e\u3057\u307e\u3059<a href=\"https:\/\/www.sparxsystems.us\/guides\/uml-with-sparx-ea\/diagrams\/\">\u52b9\u679c\u7684\u306a\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3<\/a>\u3092\u3001\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u524d\u306b\u30e2\u30c7\u30eb\u5316\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064PlantUML\u306e\u4f8b\u3092\u542b\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n<hr\/>\n<h2>\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u3068\u306f\u4f55\u304b\uff1f<\/h2>\n<p>UML\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306f\u3001\u30d7\u30ed\u30bb\u30b9\u304c\u4e92\u3044\u306b\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3057\u3001\u3069\u306e\u3088\u3046\u306a\u9806\u5e8f\u3067\u52d5\u4f5c\u3059\u308b\u304b\u3092\u793a\u3059\u76f8\u4e92\u4f5c\u7528\u56f3\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u5354\u50cd\u306e\u6587\u8108\u306b\u304a\u3051\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u9593\u306e\u76f8\u4e92\u4f5c\u7528\u3092\u6349\u3048\u307e\u3059\u3002\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e\u7279\u5fb4\u7684\u306a\u70b9\u306f\u3001<strong>\u6642\u9593<\/strong>.<\/p>\n<p id=\"BnmSsmA\"><img fetchpriority=\"high\" alt=\"Understanding The Dynamic View: UML Sequence Diagrams | Visual Paradigm\" class=\"alignnone wp-image-2339 size-full\" decoding=\"async\" fetchpriority=\"high\" height=\"572\" sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aaf73773e.png\" srcset=\"https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aaf73773e.png 1024w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aaf73773e-300x168.png 300w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aaf73773e-768x429.png 768w\" width=\"1024\"\/><\/p>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/learning\/handbooks\/software-design-handbook\/sequence-diagram.jsp\">\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3<\/a>\u306f\u3001\u3088\u308a\u5e83\u7bc4\u306aUML\u306e\u968e\u5c64\u306b\u5c5e\u3057\u3066\u304a\u308a\u3001\u7279\u306b\u76f8\u4e92\u4f5c\u7528\u56f3\u306e\u7bc4\u7587\u306b\u542b\u307e\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u4ee5\u4e0b\u306e\u76ee\u7684\u3067\u4f7f\u7528\u3055\u308c\u307e\u3059\uff1a<\/p>\n<ul>\n<li>\n<p>\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u9593\u306e\u9ad8\u30ec\u30d9\u30eb\u306a\u76f8\u4e92\u4f5c\u7528\u3092\u30e2\u30c7\u30eb\u5316\u3059\u308b\u3002<\/p>\n<\/li>\n<li>\n<p>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u5b9f\u73fe\u3059\u308b\u5354\u50cd\u5185\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u9593\u306e\u76f8\u4e92\u4f5c\u7528\u3092\u8a73\u7d30\u306b\u8a18\u8ff0\u3059\u308b\u3002<\/p>\n<\/li>\n<li>\n<p>\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u307e\u305f\u306f\u5916\u90e8\u30b7\u30b9\u30c6\u30e0\u9593\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u4ea4\u63db\u3092\u53ef\u8996\u5316\u3059\u308b\u3002<\/p>\n<\/li>\n<\/ul>\n<p><img alt=\"Sequence Diagram in UML Diagram Hierarchy\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/sequence-diagram-in-uml-diagram-hierarchy.png\"\/><\/p>\n<h3>\u4e3b\u306a\u7279\u5fb4<\/h3>\n<ol>\n<li>\n<p><strong>\u6642\u9593\u4e2d\u5fc3\uff1a<\/strong>\u7e26\u8ef8\u306f\u6642\u9593\u306e\u9032\u884c\u3092\u4e0b\u5411\u304d\u306b\u8868\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\uff1a<\/strong>\u6a2a\u8ef8\u306b\u306f\u3001\u76f8\u4e92\u4f5c\u7528\u306b\u53c2\u52a0\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u307e\u305f\u306f\u53c2\u52a0\u8005\u3092\u30ea\u30b9\u30c8\u30a2\u30c3\u30d7\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u52d5\u7684\uff1a<\/strong>\u9759\u7684\u30af\u30e9\u30b9\u56f3\u3068\u306f\u7570\u306a\u308a\u3001\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306f\u5b9f\u884c\u6642\u306b\u304a\u3051\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5354\u8abf\u52d5\u4f5c\u3092\u8a18\u8ff0\u3059\u308b\u3002<\/p>\n<\/li>\n<\/ol>\n<hr\/>\n<h2>\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e\u6982\u8981<\/h2>\n<p>\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e2\u3064\u306e\u4e3b\u8981\u306a\u6b21\u5143\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u305d\u308c\u3092\u6b63\u3057\u304f\u8aad\u307f\u53d6\u308a\u3001\u4f5c\u6210\u3059\u308b\u4e0a\u3067\u4e0d\u53ef\u6b20\u3067\u3042\u308b\u3002<\/p>\n<h3>1. \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6b21\u5143\uff08\u6c34\u5e73\u8ef8\uff09<\/h3>\n<p>\u6c34\u5e73\u8ef8\u306f\u3001\u76f8\u4e92\u4f5c\u7528\u306b\u53c2\u52a0\u3059\u308b\u8981\u7d20\u3092\u8868\u793a\u3059\u308b\u3002\u3053\u308c\u3089\u306e\u8981\u7d20\u306f\u901a\u5e38\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u30b7\u30fc\u30b1\u30f3\u30b9\u306b\u6700\u521d\u306b\u53c2\u52a0\u3057\u305f\u9806\u306b\u5de6\u304b\u3089\u53f3\u3078\u3068\u4e26\u3079\u3089\u308c\u308b\u304c\u3001\u3053\u306e\u9806\u5e8f\u306f\u5909\u5316\u3059\u308b\u5834\u5408\u304c\u3042\u308b\u3002\u5404\u8981\u7d20\u306f\u00a0<strong>\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3<\/strong>.<\/p>\n<h3>2. \u6642\u9593\u6b21\u5143\uff08\u5782\u76f4\u8ef8\uff09<\/h3>\n<p>\u5782\u76f4\u8ef8\u306f\u6642\u9593\u306e\u7d4c\u904e\u3092\u8868\u3059\u3002\u56f3\u3092\u4e0b\u306b\u79fb\u52d5\u3059\u308b\u306b\u3064\u308c\u3066\u3001\u6642\u9593\u306f\u524d\u9032\u3059\u308b\u3002<\/p>\n<blockquote>\n<p><strong>\u6ce8\u610f\uff1a<\/strong>\u00a0\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306b\u304a\u3051\u308b\u6642\u9593\u306f\u00a0<strong>\u9806\u5e8f<\/strong>\u3001\u671f\u9593\u3067\u306f\u306a\u3044\u3002\u30e1\u30c3\u30bb\u30fc\u30b8\u9593\u306e\u5782\u76f4\u65b9\u5411\u306e\u7a7a\u9593\u306f\u3001\u5b9f\u6642\u9593\u306e\u79d2\u3084\u30df\u30ea\u79d2\u3068\u5fc5\u305a\u3057\u3082\u5bfe\u5fdc\u3059\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u3002\u5358\u306b\u3001\u3042\u308b\u30a4\u30d9\u30f3\u30c8\u304c\u5225\u306e\u30a4\u30d9\u30f3\u30c8\u306e\u5f8c\u306b\u767a\u751f\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u308b\u3060\u3051\u3067\u3042\u308b\u3002<\/p>\n<\/blockquote>\n<hr\/>\n<h2>\u57fa\u672c\u7684\u306a\u8a18\u6cd5\u3068\u8981\u7d20<\/h2>\n<p>\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u3092\u69cb\u7bc9\u3059\u308b\u306b\u306f\u3001\u6a19\u6e96\u306eUML\u8a18\u6cd5\u3092\u7406\u89e3\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u4ee5\u4e0b\u306e\u3082\u306e\u304c\u57fa\u672c\u7684\u306a\u8a18\u6cd5\u3067\u3042\u308b\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th align=\"left\">\u8a18\u6cd5<\/th>\n<th align=\"left\">\u8aac\u660e<\/th>\n<th align=\"left\">\u8996\u899a\u7684\u8868\u73fe<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\"><strong>\u30a2\u30af\u30bf\u30fc<\/strong><\/td>\n<td align=\"left\">\u30e6\u30fc\u30b6\u30fc\u3001\u5916\u90e8\u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3001\u307e\u305f\u306f\u5225\u306e\u30b7\u30b9\u30c6\u30e0\u304c\u679c\u305f\u3059\u5f79\u5272\u3092\u8868\u3059\u3002\u30a2\u30af\u30bf\u30fc\u306f\u3001\u30e2\u30c7\u30eb\u5316\u5bfe\u8c61\u306e\u30b7\u30b9\u30c6\u30e0\u306e\u5916\u90e8\u306b\u3042\u308b\u3002<\/td>\n<td align=\"left\"><img alt=\"Actor\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/02-actor.png\"\/><\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3<\/strong><\/td>\n<td align=\"left\">\u76f8\u4e92\u4f5c\u7528\u306b\u304a\u3051\u308b\u500b\u5225\u306e\u53c2\u52a0\u8005\uff08\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u307e\u305f\u306f\u30a2\u30af\u30bf\u30fc\uff09\u3092\u8868\u3059\u7834\u7dda\u3002<\/td>\n<td align=\"left\"><img alt=\"Lifeline\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/03-lifeline.png\"\/><\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>\u6d3b\u6027\u5316\uff08\u5236\u5fa1\u306e\u7126\u70b9\uff09<\/strong><\/td>\n<td align=\"left\">\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3\u4e0a\u306e\u7d30\u9577\u3044\u9577\u65b9\u5f62\u3067\u3001\u8981\u7d20\u304c\u64cd\u4f5c\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u671f\u9593\u3092\u793a\u3059\u3002\u4e0a\u7aef\u306f\u958b\u59cb\u6642\u3068\u4e00\u81f4\u3057\u3001\u4e0b\u7aef\u306f\u5b8c\u4e86\u6642\u3068\u4e00\u81f4\u3059\u308b\u3002<\/td>\n<td align=\"left\"><img alt=\"Activation\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/04-activation.png\"\/><\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>\u547c\u3073\u51fa\u3057\u30e1\u30c3\u30bb\u30fc\u30b8<\/strong><\/td>\n<td align=\"left\">\u77e2\u5c3b\u304c\u5857\u308a\u3064\u3076\u3055\u308c\u305f\u5b9f\u7dda\u306e\u77e2\u5370\u3067\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3\u4e0a\u306e\u64cd\u4f5c\u306e\u547c\u3073\u51fa\u3057\u3092\u8868\u3059\u3002<\/td>\n<td align=\"left\"><img alt=\"Call Message\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/05-call-message.png\"\/><\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>\u623b\u308a\u30e1\u30c3\u30bb\u30fc\u30b8<\/strong><\/td>\n<td align=\"left\">\u77e2\u5c3b\u304c\u958b\u3044\u305f\u7834\u7dda\u306e\u77e2\u5370\u3067\u3001\u547c\u3073\u51fa\u3057\u5143\u306b\u8fd4\u3055\u308c\u308b\u60c5\u5831\u3092\u8868\u3059\u3002<\/td>\n<td align=\"left\"><img alt=\"Return Message\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/06-return-message.png\"\/><\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>\u81ea\u5df1\u30e1\u30c3\u30bb\u30fc\u30b8<\/strong><\/td>\n<td align=\"left\">\u9001\u4fe1\u8005\u3068\u53d7\u4fe1\u8005\u304c\u540c\u3058\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3\u3067\u3042\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u3067\u3001\u901a\u5e38\u306f\u5185\u90e8\u51e6\u7406\u3092\u793a\u3059\u3002<\/td>\n<td align=\"left\"><img alt=\"Self-Message\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/07-self-message.png\"\/><\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u4f5c\u6210<\/strong><\/td>\n<td align=\"left\">\u65b0\u3057\u3044\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3\u306e\u30d8\u30c3\u30c0\u30fc\u3092\u6307\u3059\u7834\u7dda\u306e\u77e2\u5370\u3067\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3092\u793a\u3059\u3002<\/td>\n<td align=\"left\"><img alt=\"Create Message\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/09-create-message.png\"\/><\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u7834\u68c4<\/strong><\/td>\n<td align=\"left\">\u5bfe\u8c61\u306e\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3\u306e\u7d42\u7aef\u306b\u5927\u304d\u306a\u300cX\u300d\u304c\u3042\u308b\u77e2\u5370\u3067\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u7834\u68c4\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3059\u3002<\/td>\n<td align=\"left\"><img alt=\"Destroy Message\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/10-destroy-message.png\"\/><\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>\u6ce8\u91c8<\/strong><\/td>\n<td align=\"left\">\u610f\u5473\u7684\u306a\u5f71\u97ff\u3092\u6301\u305f\u306a\u3044\u8ffd\u52a0\u306e\u6587\u8108\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306b\u8981\u7d20\u306b\u63a5\u7d9a\u3055\u308c\u305f\u30b3\u30e1\u30f3\u30c8\u30dc\u30c3\u30af\u30b9\u3002<\/td>\n<td align=\"left\"><img alt=\"Note\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/12-note.png\"\/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u30e1\u30c3\u30bb\u30fc\u30b8\u3068\u5236\u5fa1\u306e\u7126\u70b9<\/h3>\n<p>An\u00a0<strong>\u30a4\u30d9\u30f3\u30c8<\/strong>\u00a0\u306f\u3001\u4f55\u3089\u304b\u306e\u51fa\u6765\u4e8b\u304c\u8d77\u3053\u308b\u30a4\u30f3\u30bf\u30e9\u30af\u30b7\u30e7\u30f3\u4e0a\u306e\u4efb\u610f\u306e\u70b9\u3092\u6307\u3059\u3002\u00a0<strong>\u5236\u5fa1\u306e\u7126\u70b9<\/strong>\u00a0\uff08\u307e\u305f\u306f\u5b9f\u884c\u767a\u751f\uff09\u306f\u30a2\u30af\u30c6\u30a3\u30d9\u30fc\u30b7\u30e7\u30f3\u30d0\u30fc\u306b\u3088\u3063\u3066\u8996\u899a\u7684\u306b\u8868\u73fe\u3055\u308c\u308b\u3002\u3053\u308c\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u30bf\u30b9\u30af\u306e\u5b9f\u884c\u4e2d\u306b\u5fd9\u3057\u304f\u306a\u3063\u3066\u3044\u308b\u77ac\u9593\u3092\u660e\u78ba\u306b\u793a\u3059\u3002<\/p>\n<p><img alt=\"Message and Focus of Control\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/13-message-and-focus-of-control.png\"\/><\/p>\n<hr\/>\n<h2>PlantUML\u3092\u7528\u3044\u305f\u5b9f\u8df5\u7684\u306a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u306f\u3001PlantUML\u69cb\u6587\u3092\u4f7f\u7528\u3057\u3066\u3055\u307e\u3056\u307e\u306a\u30b7\u30ca\u30ea\u30aa\u3092\u30e2\u30c7\u30eb\u5316\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3059\u5305\u62ec\u7684\u306a\u4f8b\u3067\u3042\u308b\u3002<\/p>\n<h3>\u4f8b1\uff1a\u57fa\u672c\u7684\u306a\u30db\u30c6\u30eb\u4e88\u7d04\u30b7\u30b9\u30c6\u30e0<\/h3>\n<p>\u3053\u306e\u4f8b\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3001\u4e88\u7d04\u30b7\u30b9\u30c6\u30e0\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u9593\u306e\u76f8\u4e92\u4f5c\u7528\u3092\u793a\u3059\u3001\u53e4\u5178\u7684\u306a\u30db\u30c6\u30eb\u4e88\u7d04\u30b7\u30ca\u30ea\u30aa\u3092\u518d\u73fe\u3057\u3066\u3044\u308b\u3002<\/p>\n<p id=\"ZMfzgwS\"><img alt=\"\" class=\"alignnone size-full wp-image-2336\" decoding=\"async\" height=\"871\" sizes=\"(max-width: 1918px) 100vw, 1918px\" src=\"https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75a9d3ca2b7.png\" srcset=\"https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75a9d3ca2b7.png 1918w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75a9d3ca2b7-300x136.png 300w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75a9d3ca2b7-1024x465.png 1024w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75a9d3ca2b7-768x349.png 768w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75a9d3ca2b7-1536x698.png 1536w\" width=\"1918\"\/><\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">PlantUML<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:ZLDBQiCm4DqRV8V1Yv92Se4iGfgu7wzAu-O0YZnfH6N9IEC4txuZVq2cq7Gtijvldl3Mat3KrZfDI956UBE46WxeqLq5AMkWx3nX3IlO2Qyal6XxIvCq4PAiW-orHKyP20_zb2ODwocf6c48ibZdMFImO_47Pl3gSSEO9fKWSH8U8HkYvUEv1-Mx4ALtXjM6jM4DpuRGpJR8aOJIli-i-1ls8HZCb76xDUmlAB_XwSf8SL9QKRTWQ_HBSDRMdrs3Zv70b6ugPyDHMEIZHTV1WGapfOWO4ZDq5LiVa5fd9WO_GX3Wk1NEQ9FNj6YkVAD55_7Ucx3ld3ab3UioS-Xg3UN5teQW-ujL4ltl8alKA6a0FS3UchDozPqI7OQRgFn5QA_8b_0Lj0jpjl-eiHJNcGZFqhhgJerZme5Hv7VxYmr6BbR_wMugFZQSyK8pQR95K_6VzGC0\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>VPasCode\u3067PlantUML\u3092\u7de8\u96c6<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Plantuml<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:ZLFBJjj05DrRyZ-Cicv-e8iAeKYLrnKVu891aKY2uW6fkyuC3vC6KKMWX4TBGJoIGA0bY1OJoCVS-94Lly2TiTqQHDliHfxpkkUEnsngbkbyOLRNQ9xEMWJ43eXb4AS3rmck5e7_17wZldmZMUBjkVxkMR2z2AmDOXD41qHFrtJDdAIbCia0lrHm9qDCcxoTjsogQtFea9_Cpvb5IZAHx8IX01F6YxTfKuLxzy6cLa7NfanglZTj2usIc21MC0BmFeWjTRXHZDouJAK2aEmRD2AlIIGUjhh1rNVWDM_foAligEZv1PDQAWq24Hxv8SLpMi56qrk_2CLTKBdskmo9mO4RjjSUUevVFnhSDk0Z6ugcz-EJ3C4FGTGVUgifsIHyB8hokN6KZZdiF6YvmDR-g2-T37hRARuS1HdPl-N2LIJ-jR2_0MmBYxAUq1Fhf8bdTE2upBfiNPo0w4gT_MPmw3xHISQG3Q5EL6rgZ27xvLU-XlmWHN--WTyv8p2mEh3ZgCv_xo5v5xN1tQxlVCRkowLImSYz8ZFIm2XEbqOgFNu2pSQmUYdL-b-yJkC_NKVvZDpezSPfMJMY0ji4NWLsh-RT6wNLcFZY8cGzkZPc5QVmjtq4\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Plantuml in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-plantuml\"><code class=\"language-plantuml\" data-language=\"plantuml\" class=\"language-plantuml\">@startuml\r\ntitle \u30db\u30c6\u30eb\u4e88\u7d04\u30b7\u30b9\u30c6\u30e0 - \u57fa\u672c\u7684\u306a\u30d5\u30ed\u30fc\r\n\r\nactor \"\u30b2\u30b9\u30c8\" as Guest\r\nparticipant \"\u4e88\u7d04UI\" as UI\r\nparticipant \"\u4e88\u7d04\u30b7\u30b9\u30c6\u30e0\" as System\r\ndatabase \"\u30db\u30c6\u30eb\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\" as DB\r\n\r\nGuest -&gt; UI : \u4e88\u7d04\u8a73\u7d30\u3092\u5165\u529b\r\nactivate UI\r\nUI -&gt; System : \u5229\u7528\u53ef\u80fd\u72b6\u6cc1\u3092\u78ba\u8a8d\uff08\u65e5\u4ed8\u3001\u90e8\u5c4b\u30bf\u30a4\u30d7\uff09\r\nactivate System\r\nSystem -&gt; DB : \u90e8\u5c4b\u306e\u7a7a\u304d\u72b6\u6cc1\u3092\u7167\u4f1a\r\nactivate DB\r\nDB --&gt; System : \u5229\u7528\u53ef\u80fd\u306a\u90e8\u5c4b\u3092\u8fd4\u3059\r\ndeactivate DB\r\nSystem --&gt; UI : \u5229\u7528\u53ef\u80fd\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8868\u793a\r\ndeactivate System\r\nUI --&gt; Guest : \u90e8\u5c4b\u306e\u9078\u629e\u80a2\u3092\u8868\u793a\r\n\r\nGuest -&gt; UI : \u90e8\u5c4b\u3092\u9078\u629e\u3057\u3066\u78ba\u8a8d\r\nactivate UI\r\nUI -&gt; System : \u4e88\u7d04\u3092\u4f5c\u6210\uff08roomID, guestInfo\uff09\r\nactivate System\r\nSystem -&gt; DB : \u4e88\u7d04\u8a18\u9332\u3092\u4fdd\u5b58\r\nactivate DB\r\nDB --&gt; System : \u78ba\u8a8dID\u3092\u8fd4\u3059\r\ndeactivate DB\r\nSystem --&gt; UI : \u4e88\u7d04\u304c\u78ba\u8a8d\u3055\u308c\u307e\u3057\u305f\r\ndeactivate System\r\nUI --&gt; Guest : \u78ba\u8a8d\u3092\u8868\u793a\r\ndeactivate UI\r\n\r\n@enduml\r\n<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:ZLFBJjj05DrRyZ-Cicv-e8iAeKYLrnKVu891aKY2uW6fkyuC3vC6KKMWX4TBGJoIGA0bY1OJoCVS-94Lly2TiTqQHDliHfxpkkUEnsngbkbyOLRNQ9xEMWJ43eXb4AS3rmck5e7_17wZldmZMUBjkVxkMR2z2AmDOXD41qHFrtJDdAIbCia0lrHm9qDCcxoTjsogQtFea9_Cpvb5IZAHx8IX01F6YxTfKuLxzy6cLa7NfanglZTj2usIc21MC0BmFeWjTRXHZDouJAK2aEmRD2AlIIGUjhh1rNVWDM_foAligEZv1PDQAWq24Hxv8SLpMi56qrk_2CLTKBdskmo9mO4RjjSUUevVFnhSDk0Z6ugcz-EJ3C4FGTGVUgifsIHyB8hokN6KZZdiF6YvmDR-g2-T37hRARuS1HdPl-N2LIJ-jR2_0MmBYxAUq1Fhf8bdTE2upBfiNPo0w4gT_MPmw3xHISQG3Q5EL6rgZ27xvLU-XlmWHN--WTyv8p2mEh3ZgCv_xo5v5xN1tQxlVCRkowLImSYz8ZFIm2XEbqOgFNu2pSQmUYdL-b-yJkC_NKVvZDpezSPfMJMY0ji4NWLsh-RT6wNLcFZY8cGzkZPc5QVmjtq4\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Plantuml in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:ZLDBQiCm4DqRV8V1Yv92Se4iGfgu7wzAu-O0YZnfH6N9IEC4txuZVq2cq7Gtijvldl3Mat3KrZfDI956UBE46WxeqLq5AMkWx3nX3IlO2Qyal6XxIvCq4PAiW-orHKyP20_zb2ODwocf6c48ibZdMFImO_47Pl3gSSEO9fKWSH8U8HkYvUEv1-Mx4ALtXjM6jM4DpuRGpJR8aOJIli-i-1ls8HZCb76xDUmlAB_XwSf8SL9QKRTWQ_HBSDRMdrs3Zv70b6ugPyDHMEIZHTV1WGapfOWO4ZDq5LiVa5fd9WO_GX3Wk1NEQ9FNj6YkVAD55_7Ucx3ld3ab3UioS-Xg3UN5teQW-ujL4ltl8alKA6a0FS3UchDozPqI7OQRgFn5QA_8b_0Lj0jpjl-eiHJNcGZFqhhgJerZme5Hv7VxYmr6BbR_wMugFZQSyK8pQR95K_6VzGC0\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>VPasCode\u3067PlantUML\u3092\u7de8\u96c6<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<h3>\u4f8b2\uff1a\u7d50\u5408\u65ad\u7247\u3092\u7528\u3044\u305f\u9ad8\u5ea6\u306a\u8ad6\u7406<\/h3>\n<p>\u73fe\u5b9f\u4e16\u754c\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u6761\u4ef6\u3001\u30eb\u30fc\u30d7\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u30b9\u30c6\u30c3\u30d7\u3092\u542b\u3080\u3002UML 2.0\u306f\u00a0<strong>\u7d50\u5408\u65ad\u7247<\/strong>\u00a0\u3092\u5c0e\u5165\u3057\u3066\u3001\u3053\u308c\u3089\u306e\u8907\u96d1\u3055\u3092\u6271\u3046\u3088\u3046\u306b\u306a\u3063\u305f\u3002<\/p>\n<p><strong>\u4e00\u822c\u7684\u306a\u65ad\u7247\u6f14\u7b97\u5b50\uff1a<\/strong><\/p>\n<ul>\n<li>\n<p><strong>alt<\/strong>\uff1a\u4ee3\u66ff\u30d1\u30b9\uff08if\/else\uff09\u3002<\/p>\n<\/li>\n<li>\n<p><strong>opt<\/strong>\uff1a\u30aa\u30d7\u30b7\u30e7\u30f3\u30d1\u30b9\uff08if\uff09\u3002<\/p>\n<\/li>\n<li>\n<p><strong>loop<\/strong>: \u7e70\u308a\u8fd4\u3057\u5b9f\u884c\u3002<\/p>\n<\/li>\n<li>\n<p><strong>ref<\/strong>: \u4ed6\u306e\u56f3\u3078\u306e\u53c2\u7167\u3002<\/p>\n<\/li>\n<\/ul>\n<p id=\"kldTdxn\"><img alt=\"\" class=\"alignnone size-full wp-image-2337\" decoding=\"async\" height=\"871\" sizes=\"(max-width: 1912px) 100vw, 1912px\" src=\"https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aa333930d.png\" srcset=\"https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aa333930d.png 1912w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aa333930d-300x137.png 300w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aa333930d-1024x466.png 1024w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aa333930d-768x350.png 768w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aa333930d-1536x700.png 1536w\" width=\"1912\"\/><\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Plantuml<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:VLHBRzim3BuRy7yWV5g1zjHR3aFpAbQW1OfcwvsHk5Y8B1aIdQp_VhIK9evhD1SduiVlGT5vY8o1kyQM1Hks17yY1NZsE-FWQBY6TGW-m2zqsXgt0tbArRUnBCe25Kkjwbigm9Xwow8LGgDCYuwXoaolkAE4wB-C4FDEL3OK3aPbJ7zG5XePjnWfqyDgaMghHQ-RJkv-9ZQOmTgn_5u6qkJOe8t9cJaWqqam0QKXQStW7QqHVlhH2P73XcwXnHYFFkYRGMys8WUMSykr1iWd4GhnQY6qZyIgpWDy3VwliPH1PyBUVNyWwBkBcvnFukQYfY_uh789d8UwwPIY6E6ttvFBm9nJW8bp1c-aJI35m5uKOhtr67HPa9MvFhd3Tva6uqqRy29IQPPJEYiJMuiVK7sI9eULA3dTJt2GwNIxDBgXil0jYz-6cYtrQh2iIUr9Py7HZQSQL0DuDJHs7kr6zfDakM8qti7I-xsXwP2v9b0-cxQovl22_-0UvipKj1mdpRmHXu-SEDUtWN0FSwLy9ml-x2yn9YpcA8yesw97EbC-hrab878Nn-INYzdK_YYls5NJQLGfvIdgWppbF-0_\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>VPasCode\u3067Plantuml\u3092\u7de8\u96c6<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Plantuml<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:TLJDSj9G5Dvd9k-GwKfdxCgT2wSoVG0tkhyj6MLCWI51j-HUeIc5iOE3O7zKMWeK3BNZY4WP-p276xBhAtZk3JQ10WlWNhwVSxvpmePfaOoLtJ5KnKfOXgu1Qm4R0ns8T-O2_G6q2UpdxTW1sW5sWVTyjpKzA82Dnvw4rIRNTR3Bj-CzLL4LicsbCjfQL6bD8wRsmjGpgf96lyHs8asIbi243i0E9NuemS_9Atq1x7VBVWS1lwJdHw1_9F9PrdgjAd5YaIrYwlE-cp49sOo9keI_jlvKIcjFj43EOtd-xOhdptdnI9QUU4iiVMOlaSWG5iXuIOm4-kWFigYK93lw8orDJFDTAXD_6E461U65OMcUUmPs3UptKJTLqV0bHL5yCuRIyx7NH2wi2lHC7dlymoV-jnRGxcn4K-82-UjXZVD2k_BxJG2Cw_UuGGrX9j5vUCu1Btu5vaYDIxm9E44eo95v2auE60Fw6zWvi6FfkmSsRaPN_2Iqlak-eogwWHEQ3CiobkwgJ2Br_5yvO0rfSXsio8fASgLe0xnvvLLha2i3hVYDphGvmWAISJ6QI1IpzT4NHgyggRGb5FrEtIiCmFuCT5zesUXX0stBSYwzeGFsBD-5_Lh2fPKeDzf4E3_HOf1cMpmK8ZWykhBlokJcXBlrLLc5KB_ZyluXxvScey9TqqOgbTQyunnljX_peozWz_sBbjyeBQy-6cIX74LkPNJo1krEWVQ0jkIZwyYD3RjQqbamZa08xRqggbUcfoFSWf1plwdbBjFYmCllBthDhy8AwcJepk-4uCk8PZbju2V-8_u3\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Plantuml in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-plantuml\"><code class=\"language-plantuml\" data-language=\"plantuml\" class=\"language-plantuml\">@startuml\r\ntitle \u30e6\u30fc\u30b6\u30fc\u30ed\u30b0\u30a4\u30f3\uff08\u30a8\u30e9\u30fc\u51e6\u7406\u3068\u30eb\u30fc\u30d7\u4ed8\u304d\uff09\r\n\r\nactor \"\u30e6\u30fc\u30b6\u30fc\" as User\r\nparticipant \"\u30ed\u30b0\u30a4\u30f3\u30da\u30fc\u30b8\" as Page\r\nparticipant \"\u8a8d\u8a3c\u30b5\u30fc\u30d3\u30b9\" as Auth\r\ndatabase \"\u30e6\u30fc\u30b6\u30fcDB\" as DB\r\n\r\nUser -&gt; Page : \u8a8d\u8a3c\u60c5\u5831\u5165\u529b\r\nactivate Page\r\nPage -&gt; Auth : Validate(username, password)\r\nactivate Auth\r\n\r\nalt \u6b63\u3057\u3044\u8a8d\u8a3c\u60c5\u5831\r\n    Auth -&gt; DB : \u30e6\u30fc\u30b6\u30fc\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u53d6\u5f97\r\n    activate DB\r\n    DB --&gt; Auth : \u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\r\n    deactivate DB\r\n    Auth --&gt; Page : \u30ed\u30b0\u30a4\u30f3\u6210\u529f\u30c8\u30fc\u30af\u30f3\r\n    Page --&gt; User : \u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\r\nelse \u4e0d\u6b63\u306a\u8a8d\u8a3c\u60c5\u5831\r\n    Auth --&gt; Page : \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\r\n    Page --&gt; User : \u300c\u30ed\u30b0\u30a4\u30f3\u5931\u6557\u300d\u3092\u8868\u793a\r\nend\r\n\r\ndeactivate Auth\r\ndeactivate Page\r\n\r\nopt \u300c\u8a18\u61b6\u3059\u308b\u300d\u304c\u30c1\u30a7\u30c3\u30af\u6e08\u307f\r\n    User -&gt; Page : \u300c\u8a18\u61b6\u3059\u308b\u300d\u3092\u30c1\u30a7\u30c3\u30af\r\n    Page -&gt; Auth : \u30bb\u30c3\u30b7\u30e7\u30f3\u30af\u30c3\u30ad\u30fc\u3092\u4fdd\u5b58\r\n    Auth --&gt; Page : \u30af\u30c3\u30ad\u30fc\u8a2d\u5b9a\u5b8c\u4e86\r\nend\r\n\r\nloop \u6700\u59273\u56de\u306e\u8a66\u884c\r\n    User -&gt; Page : \u30ed\u30b0\u30a4\u30f3\u518d\u8a66\u884c\r\n    break \u30a2\u30ab\u30a6\u30f3\u30c8\u30ed\u30c3\u30af\r\n        Page -&gt; Auth : \u5931\u6557\u8a66\u884c\u56de\u6570\u3092\u78ba\u8a8d\r\n        Auth --&gt; Page : \u30a2\u30ab\u30a6\u30f3\u30c8\u30ed\u30c3\u30af\u72b6\u614b\r\n        Page --&gt; User : \u300c\u30a2\u30ab\u30a6\u30f3\u30c8\u30ed\u30c3\u30af\u4e2d\u300d\u3092\u8868\u793a\r\n    end\r\nend\r\n\r\n@enduml\r\n<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:TLJDSj9G5Dvd9k-GwKfdxCgT2wSoVG0tkhyj6MLCWI51j-HUeIc5iOE3O7zKMWeK3BNZY4WP-p276xBhAtZk3JQ10WlWNhwVSxvpmePfaOoLtJ5KnKfOXgu1Qm4R0ns8T-O2_G6q2UpdxTW1sW5sWVTyjpKzA82Dnvw4rIRNTR3Bj-CzLL4LicsbCjfQL6bD8wRsmjGpgf96lyHs8asIbi243i0E9NuemS_9Atq1x7VBVWS1lwJdHw1_9F9PrdgjAd5YaIrYwlE-cp49sOo9keI_jlvKIcjFj43EOtd-xOhdptdnI9QUU4iiVMOlaSWG5iXuIOm4-kWFigYK93lw8orDJFDTAXD_6E461U65OMcUUmPs3UptKJTLqV0bHL5yCuRIyx7NH2wi2lHC7dlymoV-jnRGxcn4K-82-UjXZVD2k_BxJG2Cw_UuGGrX9j5vUCu1Btu5vaYDIxm9E44eo95v2auE60Fw6zWvi6FfkmSsRaPN_2Iqlak-eogwWHEQ3CiobkwgJ2Br_5yvO0rfSXsio8fASgLe0xnvvLLha2i3hVYDphGvmWAISJ6QI1IpzT4NHgyggRGb5FrEtIiCmFuCT5zesUXX0stBSYwzeGFsBD-5_Lh2fPKeDzf4E3_HOf1cMpmK8ZWykhBlokJcXBlrLLc5KB_ZyluXxvScey9TqqOgbTQyunnljX_peozWz_sBbjyeBQy-6cIX74LkPNJo1krEWVQ0jkIZwyYD3RjQqbamZa08xRqggbUcfoFSWf1plwdbBjFYmCllBthDhy8AwcJepk-4uCk8PZbju2V-8_u3\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Plantuml in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:VLHBRzim3BuRy7yWV5g1zjHR3aFpAbQW1OfcwvsHk5Y8B1aIdQp_VhIK9evhD1SduiVlGT5vY8o1kyQM1Hks17yY1NZsE-FWQBY6TGW-m2zqsXgt0tbArRUnBCe25Kkjwbigm9Xwow8LGgDCYuwXoaolkAE4wB-C4FDEL3OK3aPbJ7zG5XePjnWfqyDgaMghHQ-RJkv-9ZQOmTgn_5u6qkJOe8t9cJaWqqam0QKXQStW7QqHVlhH2P73XcwXnHYFFkYRGMys8WUMSykr1iWd4GhnQY6qZyIgpWDy3VwliPH1PyBUVNyWwBkBcvnFukQYfY_uh789d8UwwPIY6E6ttvFBm9nJW8bp1c-aJI35m5uKOhtr67HPa9MvFhd3Tva6uqqRy29IQPPJEYiJMuiVK7sI9eULA3dTJt2GwNIxDBgXil0jYz-6cYtrQh2iIUr9Py7HZQSQL0DuDJHs7kr6zfDakM8qti7I-xsXwP2v9b0-cxQovl22_-0UvipKj1mdpRmHXu-SEDUtWN0FSwLy9ml-x2yn9YpcA8yesw97EbC-hrab878Nn-INYzdK_YYls5NJQLGfvIdgWppbF-0_\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>VPasCode\u3067Plantuml\u3092\u7de8\u96c6<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<h3>\u4f8b3\uff1a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u6210\u3068\u7834\u68c4<\/h3>\n<p>\u3053\u306e\u4f8b\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u6210\u304b\u3089\u7834\u68c4\u307e\u3067\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p id=\"XPXHiZo\"><img loading=\"lazy\" alt=\"\" class=\"alignnone size-full wp-image-2338\" decoding=\"async\" height=\"868\" loading=\"lazy\" sizes=\"auto, (max-width: 1915px) 100vw, 1915px\" src=\"https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aa77bd963.png\" srcset=\"https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aa77bd963.png 1915w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aa77bd963-300x136.png 300w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aa77bd963-1024x464.png 1024w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aa77bd963-768x348.png 768w, https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aa77bd963-1536x696.png 1536w\" width=\"1915\"\/><\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Plantuml<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:XPB1ReCm38RlIBo3rHCxz0Lsc3fr6ghK3gG-GPeObYc4AZ6hsDFFQIZGYcaNP9pVdtyxsNWIZhh6f0bfCWY5K-YWTAr4xxMjOGt5wGibmLvNA7jfC4tIvCnLMkgpi0IhM7CGLjJeLY0y58SbIJmA4ICV1ANe6-GW5uGNqL-bPHvQsPOGdAu_2TgAoV0Cns3wPZ9eEBj-6T6is3fa47pW9MQpfpIHCJSP6FNhK1p0SPATvQrOYOlaLwLWHzZuJFDthpqnMaZIt__1hrMX7jL4BdC-6IQ1OGcPQDhEtd73AbWwicxhEdOoxa3XdNR1-BksmkWVd1Ror_pRrbRQDNERCyuRUd9j7m0gXhEf7ovhgXeUKIxSYLy9jp26_sEBcVU9j46h-5t-0W00\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>VPasCode\u3067Plantuml\u3092\u7de8\u96c6<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Plantuml<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:XL9DJi905DutwHqch7311LmOTcmqS8KALMkWa7OmSScC0G8QYGOIZL4K0_uG4D68HEGmZobu2sTQe41gt4rclh_tpGkQM35mEX6N9QpXk8gixeDLoR5SVLpAeW02yWIq0gG7f06a3JGFcHRGHo3tGCj0tiL1t3_BaYobk9OMrLAAZf7FKG9w3VG4w9VGe3KVKamKtlA4Ecz6J3N2s_khY4xVwkM1l0eb7eBKxK3tDYSI4kPw4gl8q7RtC4hkS0-qZfmnVYf5rYWA2ByCRCmjEC2gl4pgfzEav6mqkBBo9V-QB4KDLU5oRfevAI0KXFYCnOle0la4CdGEdaQid6Nd6Mun6GvOeUhNi9hOr4pChPGerWx-CtFu3fcrZaVzh6iJ2OaqTa7Em7ubaKphIzgY8evpmzjmFYmhtCXIJ5q2UXKrgsXyrsUjox_xcBrxQ8ohRrRjIBYPs4WUBioxydKknMlzsa2QG2-cAqMwG9lYYNm0RV0VOEtlIUTM15YOohKAgdgCh_il\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Plantuml in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-plantuml\"><code class=\"language-plantuml\" data-language=\"plantuml\" class=\"language-plantuml\">@startuml\r\ntitle \u6ce8\u6587\u51e6\u7406 - \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\r\n\r\nparticipant \"\u6ce8\u6587\u30de\u30cd\u30fc\u30b8\u30e3\" as OM\r\nparticipant \"\u6ce8\u6587\" as OrderObj\r\nparticipant \"\u6c7a\u6e08\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\" as PG\r\n\r\nnote right of OM : \u51e6\u7406\u958b\u59cb\r\n\r\nOM -&gt; OrderObj : \u65b0\u898f\u6ce8\u6587\u3092\u4f5c\u6210()\r\ncreate OrderObj\r\nOrderObj --&gt; OM : \u6ce8\u6587\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\r\n\r\nOM -&gt; OrderObj : \u5546\u54c1\u3092\u8ffd\u52a0(itemList)\r\nactivate OrderObj\r\nOrderObj --&gt; OM : \u5546\u54c1\u8ffd\u52a0\u5b8c\u4e86\r\n\r\nOM -&gt; PG : \u6c7a\u6e08\u51e6\u7406(amount)\r\nactivate PG\r\nPG --&gt; OM : \u6c7a\u6e08\u6210\u529f\r\ndeactivate PG\r\n\r\nOM -&gt; OrderObj : \u6ce8\u6587\u3092\u78ba\u5b9a\r\nOrderObj --&gt; OM : \u6ce8\u6587\u78ba\u5b9a\r\n\r\nOM -&gt; OrderObj : \u7834\u68c4\r\ndestroy OrderObj\r\nnote right of OrderObj : \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u30ac\u30d9\u30fc\u30b8\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u5bfe\u8c61\r\n\r\ndeactivate OrderObj\r\n@enduml\r\n<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:XL9DJi905DutwHqch7311LmOTcmqS8KALMkWa7OmSScC0G8QYGOIZL4K0_uG4D68HEGmZobu2sTQe41gt4rclh_tpGkQM35mEX6N9QpXk8gixeDLoR5SVLpAeW02yWIq0gG7f06a3JGFcHRGHo3tGCj0tiL1t3_BaYobk9OMrLAAZf7FKG9w3VG4w9VGe3KVKamKtlA4Ecz6J3N2s_khY4xVwkM1l0eb7eBKxK3tDYSI4kPw4gl8q7RtC4hkS0-qZfmnVYf5rYWA2ByCRCmjEC2gl4pgfzEav6mqkBBo9V-QB4KDLU5oRfevAI0KXFYCnOle0la4CdGEdaQid6Nd6Mun6GvOeUhNi9hOr4pChPGerWx-CtFu3fcrZaVzh6iJ2OaqTa7Em7ubaKphIzgY8evpmzjmFYmhtCXIJ5q2UXKrgsXyrsUjox_xcBrxQ8ohRrRjIBYPs4WUBioxydKknMlzsa2QG2-cAqMwG9lYYNm0RV0VOEtlIUTM15YOohKAgdgCh_il\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Plantuml in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:XPB1ReCm38RlIBo3rHCxz0Lsc3fr6ghK3gG-GPeObYc4AZ6hsDFFQIZGYcaNP9pVdtyxsNWIZhh6f0bfCWY5K-YWTAr4xxMjOGt5wGibmLvNA7jfC4tIvCnLMkgpi0IhM7CGLjJeLY0y58SbIJmA4ICV1ANe6-GW5uGNqL-bPHvQsPOGdAu_2TgAoV0Cns3wPZ9eEBj-6T6is3fa47pW9MQpfpIHCJSP6FNhK1p0SPATvQrOYOlaLwLWHzZuJFDthpqnMaZIt__1hrMX7jL4BdC-6IQ1OGcPQDhEtd73AbWwicxhEdOoxa3XdNR1-BksmkWVd1Ror_pRrbRQDNERCyuRUd9j7m0gXhEf7ovhgXeUKIxSYLy9jp26_sEBcVU9j46h-5t-0W00\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>VPasCode\u3067Plantuml\u3092\u7de8\u96c6<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<hr\/>\n<h2>\u30b7\u30fc\u30b1\u30f3\u30b9\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306e\u8a73\u7d30\u89e3\u8aac<\/h2>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/guide\/mastering-uml-sequence-diagrams-a-comprehensive-guide-from-basic-notation-to-advanced-decomposition\/\">\u30b7\u30fc\u30b1\u30f3\u30b9\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8<\/a>\u30e1\u30a4\u30f3\u306e\u6d41\u308c\u3092\u4e71\u3059\u3053\u3068\u306a\u304f\u3001\u8907\u96d1\u306a\u8ad6\u7406\u3092\u30e2\u30c7\u30eb\u5316\u3067\u304d\u308b\u3002\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306f\u3001\u5bfe\u8a71\u306e\u4e00\u90e8\u3092\u56f2\u3080\u30dc\u30c3\u30af\u30b9\uff08\u30d5\u30ec\u30fc\u30e0\uff09\u3067\u8868\u73fe\u3055\u308c\u308b\u3002<\/p>\n<p><img alt=\"Fragment\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/14-fragment.png\"\/><\/p>\n<table>\n<thead>\n<tr>\n<th align=\"left\">\u6f14\u7b97\u5b50<\/th>\n<th align=\"left\">\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u30bf\u30a4\u30d7<\/th>\n<th align=\"left\">\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td align=\"left\"><strong>alt<\/strong><\/td>\n<td align=\"left\">\u4ee3\u66ff<\/td>\n<td align=\"left\">\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u3001\u305d\u306e\u4e2d\u304b\u30891\u3064\u306e\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306e\u307f\u304c\u5b9f\u884c\u3055\u308c\u308b\u8907\u6570\u306e\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\uff08if-else\u306b\u4f3c\u3066\u3044\u308b\uff09\u3002<\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>opt<\/strong><\/td>\n<td align=\"left\">\u30aa\u30d7\u30b7\u30e7\u30f3<\/td>\n<td align=\"left\">\u6761\u4ef6\u304ctrue\u306e\u3068\u304d\u306e\u307f\u5b9f\u884c\u3055\u308c\u308b\uff08\u30b7\u30f3\u30d7\u30eb\u306aif\u6587\u306b\u4f3c\u3066\u3044\u308b\uff09\u3002<\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>par<\/strong><\/td>\n<td align=\"left\">\u4e26\u5217<\/td>\n<td align=\"left\">\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u304c\u4e26\u5217\u3067\u5b9f\u884c\u3055\u308c\u308b\u3002<\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>loop<\/strong><\/td>\n<td align=\"left\">\u30eb\u30fc\u30d7<\/td>\n<td align=\"left\">\u30ac\u30fc\u30c9\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u8907\u6570\u56de\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>break<\/strong><\/td>\n<td align=\"left\">Break<\/td>\n<td align=\"left\">\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u305f\u5834\u5408\u3001\u5468\u56f2\u306e\u30a4\u30f3\u30bf\u30e9\u30af\u30b7\u30e7\u30f3\u304b\u3089\u629c\u3051\u308b\uff08\u4f8b\u5916\u51e6\u7406\uff09\u3002<\/td>\n<\/tr>\n<tr>\n<td align=\"left\"><strong>ref<\/strong><\/td>\n<td align=\"left\">\u53c2\u7167<\/td>\n<td align=\"left\">\u30e2\u30b8\u30e5\u30fc\u30eb\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u3001\u5225\u306e\u56f3\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u30a4\u30f3\u30bf\u30e9\u30af\u30b7\u30e7\u30f3\u3092\u53c2\u7167\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u7d50\u5408\u65ad\u7247\u306e\u4f8b<\/h3>\n<p><img alt=\"Combined Fragment example\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/15-combined-fragment-example.png\"\/><\/p>\n<hr\/>\n<h2><a href=\"https:\/\/www.visual-paradigm.com\/support\/documents\/vpuserguide\/94\/2575\/83684_produceuseca.html\">\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u30b7\u30ca\u30ea\u30aa\u306e\u30e2\u30c7\u30ea\u30f3\u30b0<\/a><\/h2>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/guide\/mastering-uml-sequence-diagrams-a-comprehensive-guide-from-basic-notation-to-advanced-decomposition\/\">\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3<\/a>\u8981\u4ef6\u5de5\u5b66\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3001\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u5177\u4f53\u7684\u306a\u30b7\u30ca\u30ea\u30aa\u306b\u6d17\u7df4\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<ul>\n<li>\n<p><strong>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\uff1a<\/strong>\u00a0\u30a2\u30af\u30bf\u30fc\u3068\u30b7\u30b9\u30c6\u30e0\u9593\u306e\u30a4\u30f3\u30bf\u30e9\u30af\u30b7\u30e7\u30f3\u306e\u96c6\u307e\u308a\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30b7\u30ca\u30ea\u30aa\uff1a<\/strong>\u00a0\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u901a\u308b\u5358\u4e00\u306e\u7d4c\u8def\uff08\u4f8b\uff1a\u300c\u30cf\u30c3\u30d4\u30fc\u30d1\u30b9\u300d\u307e\u305f\u306f\u300c\u30a8\u30e9\u30fc\u30d1\u30b9\u300d\uff09\u3002<\/p>\n<\/li>\n<\/ul>\n<p><img alt=\"Sequence Diagram for Use Case\" decoding=\"async\" src=\"https:\/\/cdn-images.visual-paradigm.com\/guide\/uml\/what-is-sequence-diagram\/16-sequence-diagram-for-use-case.png\"\/><\/p>\n<p>\u5404\u30b7\u30ca\u30ea\u30aa\u3092\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306b\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b\u3053\u3068\u3067\u3001\u958b\u767a\u3092\u958b\u59cb\u3059\u308b\u524d\u306b\u3059\u3079\u3066\u306e\u6a5f\u80fd\u8981\u4ef6\u304c\u8003\u616e\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u30c1\u30fc\u30e0\u306f\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<hr\/>\n<h2>\u30b3\u30fc\u30c9\u3088\u308a\u524d\u306b\u30e2\u30c7\u30eb\u5316\u3059\u308b\u7406\u7531\u306f\uff1f<\/h2>\n<p>\u3042\u306a\u305f\u306f\u5c0b\u306d\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3001<em>\u300c\u30b3\u30fc\u30c9\u3092\u66f8\u3051\u3070\u3088\u3044\u306e\u306b\u3001\u306a\u305c\u56f3\u3092\u63cf\u304f\u5fc5\u8981\u304c\u3042\u308b\u306e\u304b\uff1f\u300d<\/em>\u00a0\u4e3b\u306a\u5229\u70b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u62bd\u8c61\u5316\uff1a<\/strong>\u00a0\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306f\u30b3\u30fc\u30c9\u3088\u308a\u3082\u308f\u305a\u304b\u306b\u4e0a\u4f4d\u306e\u30ec\u30d9\u30eb\u3067\u52d5\u4f5c\u3057\u3001\u69cb\u6587\u3067\u306f\u306a\u304f\u8ad6\u7406\u30d5\u30ed\u30fc\u306b\u6ce8\u76ee\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u8a00\u8a9e\u975e\u4f9d\u5b58\u6027\uff1a<\/strong>\u00a0\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\uff08Java\u3001Python\u3001C#\u306a\u3069\uff09\u306b\u95a2\u4fc2\u306a\u304f\u3001\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u304c\u7406\u89e3\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5354\u50cd\uff1a<\/strong>\u00a0\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u3067\u306a\u3044\u8005\uff08\u30d7\u30ed\u30c0\u30af\u30c8\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3001\u30d3\u30b8\u30cd\u30b9\u30a2\u30ca\u30ea\u30b9\u30c8\u306a\u3069\uff09\u304c\u8ad6\u7406\u306e\u69cb\u7bc9\u3068\u691c\u8a3c\u306b\u53c2\u52a0\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u30c6\u30b9\u30c8\u3068UX\uff1a<\/strong>\u00a0\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u306e\u512a\u308c\u305f\u8a2d\u8a08\u56f3\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u5fdc\u7b54\u3092\u660e\u78ba\u306b\u3059\u308b\u3053\u3068\u3067UX\u306e\u30ef\u30a4\u30e4\u30fc\u30d5\u30ec\u30fc\u30e0\u4f5c\u6210\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n<hr\/>\n<h2>\u7d50\u8ad6<\/h2>\n<p><a href=\"https:\/\/guides.visual-paradigm.com\/understanding-sequence-diagram-notation-in-uml\/\">UML\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3<\/a>\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e<a href=\"https:\/\/www.visual-paradigm.com\/guide\/sysml\/modeling-scenarios-with-sequence-diagram\/\">\u52d5\u7684\u52d5\u4f5c\u3092\u53ef\u8996\u5316\u3059\u308b\u305f\u3081\u306e\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3059<\/a>\u3002\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3\u3001\u30a2\u30af\u30c6\u30a3\u30d9\u30fc\u30b7\u30e7\u30f3\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u3001\u7d50\u5408\u65ad\u7247\u306e\u8868\u8a18\u6cd5\u3092\u7fd2\u5f97\u3059\u308b\u3053\u3068\u3067\u3001\u30c1\u30fc\u30e0\u30e1\u30f3\u30d0\u30fc\u9593\u3067\u8907\u96d1\u306a\u76f8\u4e92\u4f5c\u7528\u3092\u660e\u78ba\u306b\u4f1d\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b7\u30f3\u30d7\u30eb\u306a\u30ed\u30b0\u30a4\u30f3\u30d5\u30ed\u30fc\u306e\u30e2\u30c7\u30eb\u5316\u304b\u3089\u8907\u96d1\u306a\u5206\u6563\u30b7\u30b9\u30c6\u30e0\u307e\u3067\u3001\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306f\u8981\u4ef6\u3068\u5b9f\u88c5\u306e\u9593\u306e\u30ae\u30e3\u30c3\u30d7\u3092\u57cb\u3081\u308b\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n<p>\u7c21\u5358\u306b\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u30ec\u30d9\u30eb\u306e\u56f3\u3092\u63cf\u304d\u305f\u3044\u65b9\u306b\u306f\u3001<a href=\"https:\/\/www.visual-paradigm.com\/features\/\"><strong>Visual Paradigm<\/strong>\u306f\u3001\u5805\u7262\u306aUML\u30e2\u30c7\u30ea\u30f3\u30b0\u30c4\u30fc\u30eb\u306e\u30bb\u30c3\u30c8\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059<\/a>\u305d\u306e<a href=\"https:\/\/www.visual-paradigm.com\/solution\/freeumltool\/\">\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30a8\u30c7\u30a3\u30b7\u30e7\u30f3<\/a>\u306f\u3001\u76f4\u611f\u7684\u3067\u4f7f\u3044\u3084\u3059\u304f\u3001\u5b8c\u5168\u306b\u7121\u6599\u306e\u56fd\u969b\u7684\u306a\u8cde\u3092\u53d7\u8cde\u3057\u305f\u30e2\u30c7\u30eb\u30e3\u30fc\u3067\u3042\u308a\u3001UML\u306e\u5b66\u7fd2\u3084\u5b9f\u8df5\u3092\u3088\u308a\u901f\u304f\u3001\u3088\u308a\u826f\u304f\u884c\u3046\u305f\u3081\u306e\u512a\u308c\u305f\u9078\u629e\u3067\u3059\u3002<\/p>\n<p class=\"\"><a href=\"https:\/\/www.visual-paradigm.com\/download\/community.jsp\">\u7121\u6599\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9 Visual Paradigm \u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30a8\u30c7\u30a3\u30b7\u30e7\u30f3<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5c0e\u5165 \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u5de5\u5b66\u304a\u3088\u3073\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u306e\u4e16\u754c\u3067\u306f\u3001\u7406\u89e3\u3059\u308b&hellip;<\/p>\n","protected":false},"author":2,"featured_media":2030,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","fifu_image_url":"https:\/\/www.ez-knowledge.com\/wp-content\/uploads\/2026\/08\/img_6a75aaf73773e.png","fifu_image_alt":"","footnotes":""},"categories":[57,50],"tags":[],"class_list":["post-2029","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai","category-unified-modeling-language"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ 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