{"id":3744,"date":"2026-02-27T10:52:45","date_gmt":"2026-02-27T10:52:45","guid":{"rendered":"https:\/\/www.diagrams-ai.com\/ja\/mastering-sequence-diagram-fragments-a-comprehensive-guide-to-loop-alternative-and-option-2\/"},"modified":"2026-02-27T10:52:45","modified_gmt":"2026-02-27T10:52:45","slug":"mastering-sequence-diagram-fragments-a-comprehensive-guide-to-loop-alternative-and-option-2","status":"publish","type":"post","link":"https:\/\/www.diagrams-ai.com\/ja\/mastering-sequence-diagram-fragments-a-comprehensive-guide-to-loop-alternative-and-option-2\/","title":{"rendered":"\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e\u65ad\u7247\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\uff1a\u30eb\u30fc\u30d7\u3001\u4ee3\u66ff\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u306e\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9"},"content":{"rendered":"<h1>\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e\u65ad\u7247\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\uff1a\u30eb\u30fc\u30d7\u3001\u4ee3\u66ff\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u306e\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9<\/h1>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-sequence-diagram\/\">\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3<\/a>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u52d5\u7684\u76f8\u4e92\u4f5c\u7528\u306e\u8a2d\u8a08\u56f3\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u6642\u9593\u3068\u3068\u3082\u306b\u3069\u306e\u3088\u3046\u306b\u901a\u4fe1\u3059\u308b\u304b\u3092\u8996\u899a\u7684\u306b\u63cf\u5199\u3059\u308b\u3002\u3057\u304b\u3057\u3001\u73fe\u5b9f\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u307b\u3068\u3093\u3069\u7dda\u5f62\u3067\u306f\u306a\u3044\u3002\u7e70\u308a\u8fd4\u3057\u3001\u610f\u601d\u6c7a\u5b9a\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u7d4c\u8def\u304c\u542b\u307e\u308c\u308b\u3002\u3053\u308c\u3089\u306e\u56f3\u306e\u4f1d\u9054\u529b\u3092\u5f37\u5316\u3059\u308b\u305f\u3081\u306b\u3001<strong>\u65ad\u7247<\/strong>\u304c\u767b\u5834\u3057\u3001\u3053\u308c\u3089\u306e\u8907\u96d1\u3055\u3092\u6d17\u7df4\u3055\u308c\u305f\u65b9\u6cd5\u3067\u8868\u73fe\u3067\u304d\u308b\u3002<\/p>\n<p>\u3053\u306e\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9\u3067\u306f\u30013\u3064\u306e\u4e3b\u8981\u306a\u65ad\u7247\u306e\u672c\u8cea\u3092\u660e\u3089\u304b\u306b\u3059\u308b\u2014<strong>\u30eb\u30fc\u30d7<\/strong>, <strong>\u4ee3\u66ff<\/strong>\u3001\u304a\u3088\u3073<strong>\u30aa\u30d7\u30b7\u30e7\u30f3<\/strong>\u2014\u305d\u3057\u3066\u3001\u305d\u308c\u3089\u304c\u6280\u8853\u6587\u66f8\u306e\u6df1\u3055\u3068\u660e\u78ba\u3055\u306b\u3069\u306e\u3088\u3046\u306b\u8ca2\u732e\u3059\u308b\u304b\u3092\u691c\u8a3c\u3059\u308b\u3002<\/p>\n<h2>\u4e3b\u8981\u306a\u6982\u5ff5<\/h2>\n<p>\u7279\u5b9a\u306e\u65ad\u7247\u306e\u7a2e\u985e\u306b\u6df1\u5165\u308a\u3059\u308b\u524d\u306b\u3001<a href=\"https:\/\/guides.visual-paradigm.com\/understanding-sequence-diagram-notation-in-uml\/\">UML\uff08\u7d71\u5408\u30e2\u30c7\u30ea\u30f3\u30b0\u8a00\u8a9e\uff09\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u3067\u4f7f\u7528\u3055\u308c\u308b\u57fa\u790e\u7684\u306a\u7528\u8a9e\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3042\u308b<\/a>.<\/p>\n<ul>\n<li><strong>\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3\uff1a<\/strong>\u76f8\u4e92\u4f5c\u7528\u306b\u304a\u3051\u308b\u500b\u3005\u306e\u53c2\u52a0\u8005\uff08\u4f8b\uff1a\u30af\u30e9\u30b9\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3001\u30a2\u30af\u30bf\u30fc\uff09\u3092\u8868\u3059\u3002<\/li>\n<li><strong>\u30e1\u30c3\u30bb\u30fc\u30b8\uff1a<\/strong>\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3\u9593\u306e\u901a\u4fe1\u3067\u3042\u308a\u3001\u901a\u5e38\u306f\u77e2\u5370\u3067\u793a\u3055\u308c\u308b\u3002<\/li>\n<li><strong>\u7d50\u5408\u65ad\u7247\uff1a<\/strong>\u8907\u96d1\u306a<a href=\"https:\/\/guides.visual-paradigm.com\/mastering-sequence-diagram-modeling-a-practical-approach-with-visual-paradigm\/\">\u76f8\u4e92\u4f5c\u7528\u306e\u610f\u5473\u8ad6<\/a>\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u8ad6\u7406\u7684\u30b0\u30eb\u30fc\u30d7\u3002\u305f\u3068\u3048\u3070\u30eb\u30fc\u30d7\u3084\u6761\u4ef6\u306a\u3069\u3002<\/li>\n<li><strong>\u76f8\u4e92\u4f5c\u7528\u6f14\u7b97\u5b50\uff1a<\/strong>\u65ad\u7247\u306e\u5de6\u4e0a\u9685\u306b\u3042\u308b\u30ad\u30fc\u30ef\u30fc\u30c9\uff08\u4f8b\uff1a<code>\u30eb\u30fc\u30d7<\/code>, <code>alt<\/code>, <code>opt<\/code>) \u306f\u305d\u306e\u52d5\u4f5c\u3092\u5b9a\u7fa9\u3059\u308b\u3002<\/li>\n<\/ul>\n<h2>\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306e\u8aac\u660e\uff1a\u30eb\u30fc\u30d7\u3001\u4ee3\u66ff\u3001\u30aa\u30d7\u30b7\u30e7\u30f3<\/h2>\n<p>\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306f\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3042\u308b\u304c\u3001\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u305d\u306e\u771f\u306e\u67d4\u8edf\u6027\u304c\u767a\u63ee\u3055\u308c\u308b\u3002\u6700\u3082\u4e00\u822c\u7684\u306a3\u3064\u306e\u30bf\u30a4\u30d7\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u3053\u3046\u3002<\/p>\n<h3>1. \u30eb\u30fc\u30d7\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8<\/h3>\n<p>The <strong>\u30eb\u30fc\u30d7<\/strong>\u30eb\u30fc\u30d7\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306f\u53cd\u5fa9\u7684\u306a\u52d5\u4f5c\u3092\u8868\u73fe\u3059\u308b\u6a19\u6e96\u7684\u306a\u65b9\u6cd5\u3067\u3042\u308b\u3002\u7279\u5b9a\u306e\u76f8\u4e92\u4f5c\u7528\u306e\u30bb\u30c3\u30c8\u304c\u8907\u6570\u56de\u7e70\u308a\u8fd4\u3055\u308c\u308b\u304b\u3001\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u308b\u307e\u3067\u7e70\u308a\u8fd4\u3055\u308c\u308b\u72b6\u6cc1\u3092\u30e2\u30c7\u30eb\u5316\u3059\u308b\u3002<\/p>\n<ul>\n<li><strong>\u8996\u899a\u7684\u8868\u8a18\uff1a<\/strong>\u30ad\u30fc\u30ef\u30fc\u30c9 <code>loop<\/code> \u3092\u5de6\u4e0a\u306b\u914d\u7f6e\u3057\u305f\u9577\u65b9\u5f62\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4f8b\uff1a<\/strong>\u30a2\u30a4\u30c6\u30e0\u306e\u30ea\u30b9\u30c8\u51e6\u7406\u3001\u63a5\u7d9a\u306e\u518d\u8a66\u884c\u3001\u7e70\u308a\u8fd4\u3057\u306e\u30e6\u30fc\u30b6\u30fc\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<blockquote>\n<p><strong>\u30b7\u30ca\u30ea\u30aa\uff1a<\/strong>\u30e6\u30fc\u30b6\u30fc\u304c\u30ed\u30b0\u30a4\u30f3\u3092\u8a66\u307f\u308b\u72b6\u6cc1\u3092\u8003\u3048\u3066\u307f\u3088\u3046\u3002\u8aa4\u3063\u305f\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5165\u529b\u3057\u305f\u5834\u5408\u3001\u30b7\u30b9\u30c6\u30e0\u306f\u518d\u5ea6\u5165\u529b\u3092\u6c42\u3081\u308b\u3002\u3053\u308c\u304c\u6700\u59273\u56de\u307e\u3067\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u691c\u8a3c\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30eb\u30fc\u30d7\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u3067\u56f2\u3080\u3053\u3068\u3067\u3001\u540c\u3058\u77e2\u5370\u30923\u56de\u63cf\u304b\u305a\u306b\u7e70\u308a\u8fd4\u3057\u3092\u7c21\u6f54\u306b\u8868\u73fe\u3067\u304d\u308b\u3002<\/p>\n<\/blockquote>\n<h3>2. \u4ee3\u66ff\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8<\/h3>\n<p>The <a href=\"https:\/\/knowhow.visual-paradigm.com\/uml\/seq-diagram-combined-fragment\/\">\u4ee3\u66ff<\/a>\uff08\u307e\u305f\u306f<code>alt<\/code>\u4ee3\u66ff\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306fUML\u306b\u304a\u3051\u308b\u300cif-else\u300d\u307e\u305f\u306f\u300cswitch\u300d\u6587\u306b\u76f8\u5f53\u3059\u308b\u3002\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u5b9f\u884c\u53ef\u80fd\u306a\u30d1\u30b9\u304c1\u3064\u3060\u3051\u3068\u306a\u308b\u3001\u4e92\u3044\u306b\u6392\u4ed6\u7684\u306a\u9078\u629e\u3092\u8868\u3059\u3002<\/p>\n<ul>\n<li><strong>\u8996\u899a\u7684\u8868\u8a18\uff1a<\/strong>\u30e9\u30d9\u30eb <code>alt<\/code> \u304c\u70b9\u7dda\u306e\u6c34\u5e73\u7dda\uff08\u76f8\u4e92\u4f5c\u7528\u30aa\u30da\u30e9\u30f3\u30c9\u533a\u5207\u308a\uff09\u3067\u5206\u5272\u3055\u308c\u305f\u9577\u65b9\u5f62\u3002\u5404\u30bb\u30af\u30b7\u30e7\u30f3\u306f\u7570\u306a\u308b\u30d1\u30b9\u3092\u8868\u3059\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4f8b\uff1a<\/strong>\u652f\u6255\u3044\u51e6\u7406\uff08\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9 vs. PayPal\uff09\u3001\u30ed\u30b0\u30a4\u30f3\u65b9\u6cd5\uff08\u30d1\u30b9\u30ef\u30fc\u30c9 vs. \u751f\u4f53\u8a8d\u8a3c\uff09\u3002<\/li>\n<\/ul>\n<h3>3. \u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8<\/h3>\n<p>The <strong>\u30aa\u30d7\u30b7\u30e7\u30f3<\/strong>\uff08\u307e\u305f\u306f<code>opt<\/code>fragment\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u76f8\u4e92\u4f5c\u7528\u3092\u8868\u3057\u307e\u3059\u3002else\u304c\u306a\u3044\u5358\u7d14\u306a\u300cif\u300d\u6587\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002\u6761\u4ef6\u304ctrue\u306e\u5834\u5408\u3001\u30b7\u30fc\u30b1\u30f3\u30b9\u304c\u5b9f\u884c\u3055\u308c\u3001\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u306f\u5b8c\u5168\u306b\u30b9\u30ad\u30c3\u30d7\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u8996\u899a\u7684\u8868\u8a18\uff1a<\/strong>\u30e9\u30d9\u30eb\u304c\u4ed8\u3044\u305f\u9577\u65b9\u5f62<code>opt<\/code>\u3002\u4e00\u65b9\u3001<code>alt<\/code>\u306f\u3001\u4ee3\u66ff\u30d1\u30b9\u304c\u306a\u3044\u305f\u3081\u3001\u5206\u5272\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4f8b\uff1a<\/strong>\u30c1\u30a7\u30c3\u30af\u30a2\u30a6\u30c8\u6642\u306b\u30af\u30fc\u30dd\u30f3\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3001\u767b\u9332\u6642\u306b\u7d39\u4ecbID\u3092\u5165\u529b\u3059\u308b\u3002<\/li>\n<\/ul>\n<h2>\u4f8b\uff1a\u8ad6\u7406\u306e\u53ef\u8996\u5316<\/h2>\n<p>\u3053\u308c\u3089\u306e\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u304c\u8ad6\u7406\u304b\u3089\u56f3\u306b\u3069\u306e\u3088\u3046\u306b\u7ffb\u8a33\u3055\u308c\u308b\u304b\u3092\u3088\u308a\u3088\u304f\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u300c\u30b3\u30fc\u30c9\u304b\u3089\u56f3\u300d\u3078\u306e\u8868\u73fe\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u4f8b1\uff1a\u30eb\u30fc\u30d7\uff08\u30ed\u30b0\u30a4\u30f3\u518d\u8a66\u884c\uff09<\/h3>\n<p><strong>\u8ad6\u7406\uff1a<\/strong><\/p>\n<pre><code>counter = 0\nwhile (counter &lt; 3) {\n    User -&gt; System: \u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u9001\u4fe1\n    System -&gt; DB: \u691c\u8a3c\n    if (\u6709\u52b9) break;\n    counter++\n}<\/code><\/pre>\n<p><strong>\u56f3\u306b\u3088\u308b\u8868\u73fe\uff1a<\/strong> 1\u3064\u306e<code>loop<\/code>\u30d5\u30ec\u30fc\u30e0\u304c\u300c\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u9001\u4fe1\u300d\u304a\u3088\u3073\u300c\u691c\u8a3c\u300d\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u56f2\u3093\u3067\u3044\u307e\u3059\u3002\u30b2\u30fc\u30c8\u6761\u4ef6<code>[counter &lt; 3]<\/code>\u306f\u4e0a\u90e8\u306b\u914d\u7f6e\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u4f8b2\uff1a\u4ee3\u66ff\uff08\u652f\u6255\u3044\u65b9\u6cd5\uff09<\/h3>\n<p><strong>\u8ad6\u7406\uff1a<\/strong><\/p>\n<pre><code>if (method == \"CreditCard\") {\n    System -&gt; Stripe: \u30ab\u30fc\u30c9\u51e6\u7406\n} else {\n    System -&gt; PayPal: \u30e6\u30fc\u30b6\u30fc\u3092\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\n}<\/code><\/pre>\n<p><strong>\u56f3\u306b\u3088\u308b\u8868\u73fe\uff1a<\/strong> 1\u3064\u306e<code>alt<\/code> \u4e0a\u90e8\u3068\u4e0b\u90e8\u306e2\u3064\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3092\u6301\u3064\u30d5\u30ec\u30fc\u30e0\u3002\u4e0a\u90e8\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u306b\u306f\u3001Stripe\u3068\u30ac\u30fc\u30c9\u306e\u3084\u308a\u53d6\u308a\u304c\u542b\u307e\u308c\u308b<code>[\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9]<\/code>\u3002\u4e0b\u90e8\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u306f\u7834\u7dda\u3067\u533a\u5207\u3089\u308c\u3066\u304a\u308a\u3001PayPal\u3068\u30ac\u30fc\u30c9\u306e\u3084\u308a\u53d6\u308a\u304c\u542b\u307e\u308c\u308b<code>[PayPal]<\/code>.<\/p>\n<h2>VP AI\uff1a\u8907\u96d1\u306a\u56f3\u306e\u81ea\u52d5\u5316<\/h2>\n<p><a href=\"https:\/\/guides.visual-paradigm.com\/creating-sequence-diagrams-in-uml-a-comprehensive-tutorial\/\">\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e\u4f5c\u6210<\/a> \u8907\u96d1\u306a\u65ad\u7247\u3092\u624b\u52d5\u3067\u4f5c\u6210\u3059\u308b\u306e\u306f\u6642\u9593\u306e\u304b\u304b\u308b\u4f5c\u696d\u3067\u3042\u308b<strong>Visual Paradigm AI<\/strong> \u3053\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u5909\u9769\u3057\u3001\u30ec\u30a4\u30a2\u30a6\u30c8\u3067\u306f\u306a\u304f\u8ad6\u7406\u306b\u96c6\u4e2d\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b<\/p>\n<p>Visual Paradigm\u306eAI\u652f\u63f4\u6a5f\u80fd\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001<strong>\u30c6\u30ad\u30b9\u30c8\u304b\u3089\u56f3\u3078\u306e\u5909\u63db<\/strong>\u6a5f\u80fd\u3092\u6d3b\u7528\u3067\u304d\u308b\u3002\u30eb\u30fc\u30d7\u30dc\u30c3\u30af\u30b9\u3092\u30c9\u30e9\u30c3\u30b0\u3057\u3066\u30b5\u30a4\u30ba\u3092\u5909\u66f4\u3057\u305f\u308a\u3001\u4ee3\u66ff\u90e8\u5206\u3092\u6574\u5217\u3057\u305f\u308a\u3059\u308b\u4ee3\u308f\u308a\u306b\u3001AI\u306b\u7c21\u5358\u306b\u30d7\u30ed\u30f3\u30d7\u30c8\u3092\u9001\u4fe1\u3067\u304d\u308b<\/p>\n<p><em>&#8220;\u30ed\u30b0\u30a4\u30f3\u30d7\u30ed\u30bb\u30b9\u306e\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u30023\u56de\u306e\u5931\u6557\u8a66\u884c\u306e\u30eb\u30fc\u30d7\u3092\u542b\u3081\u3001\u30ed\u30b0\u30a4\u30f3\u6210\u529f\u3068\u30a2\u30ab\u30a6\u30f3\u30c8\u30ed\u30c3\u30af\u30a2\u30a6\u30c8\u306e\u4ee3\u66ff\u30d1\u30b9\u3092\u793a\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u30ea\u30bb\u30c3\u30c8\u3067\u304d\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002&#8221;<\/em><\/p>\n<p><strong>VP AI\u306e\u5229\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u30b9\u30d4\u30fc\u30c9\uff1a<\/strong>\u5373\u5ea7\u306b\u6b63\u3057\u3044\u65ad\u7247\u8868\u8a18\u3092\u542b\u3080\u69cb\u9020\u3092\u751f\u6210\u3059\u308b<\/li>\n<li><strong>\u6b63\u78ba\u6027\uff1a<\/strong> \u6a19\u6e96\u7684\u306aUML\u69cb\u6587\u304c<code>\u30eb\u30fc\u30d7<\/code>, <code>alt<\/code>\u3001\u304a\u3088\u3073<code>opt<\/code>\u30d5\u30ec\u30fc\u30e0\u306b\u5f93\u3046\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b<\/li>\n<li><strong>\u53cd\u5fa9\uff1a<\/strong>\u8981\u4ef6\u304c\u5909\u66f4\u3055\u308c\u305f\u5834\u5408\u3067\u3082\u3001\u5b8c\u5168\u306b\u518d\u63cf\u753b\u305b\u305a\u306b\u8fc5\u901f\u306b\u56f3\u3092\u518d\u751f\u6210\u3067\u304d\u308b<\/li>\n<\/ul>\n<h2>\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306b\u8907\u96d1\u306a\u8981\u7d20\u3092\u4f7f\u7528\u3059\u3079\u304d\u304b\uff1f<\/h2>\n<p>\u65ad\u7247\u306f\u5f37\u529b\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u304c\u3001\u8996\u899a\u7684\u306a\u91cd\u307f\u3082\u5897\u3059\u3002\u8907\u96d1\u306a\u8981\u7d20\u3092\u4f7f\u7528\u3059\u308b\u304b\u3069\u3046\u304b\u306e\u5224\u65ad\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u8907\u96d1\u3055\u3068\u5bfe\u8c61\u3068\u306a\u308b\u30e6\u30fc\u30b6\u30fc\u306b\u4f9d\u5b58\u3059\u308b<\/p>\n<h3>\u5229\u70b9<\/h3>\n<ul>\n<li><strong>\u660e\u78ba\u3055\u3068\u6b63\u78ba\u3055\uff1a<\/strong>\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306f\u8907\u96d1\u306a\u8ad6\u7406\u3092\u7c21\u6f54\u306b\u8868\u73fe\u3059\u308b\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u3001\u958b\u767a\u8005\u304c\u5fc5\u8981\u306a\u6b63\u78ba\u306a\u6761\u4ef6\u3092\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u3088\u308a\u826f\u3044\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u5316\uff1a<\/strong>\u305d\u308c\u3089\u306f\u56f3\u3092\u300c\u30cf\u30c3\u30d4\u30fc\u30d1\u30b9\u300d\u306e\u56f3\u793a\u304b\u3089\u5805\u7262\u306a\u6280\u8853\u7684\u4ed5\u69d8\u3078\u3068\u5909\u63db\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u30b7\u30ca\u30ea\u30aa\u306e\u8868\u73fe\uff1a<\/strong>\u305d\u308c\u3089\u306f\u9759\u7684\u56f3\u304c\u898b\u9003\u3059\u73fe\u5b9f\u4e16\u754c\u306e\u52d5\u4f5c\uff08\u30eb\u30fc\u30d7\u3001\u5224\u65ad\uff09\u3092\u7279\u306b\u52b9\u679c\u7684\u306b\u6349\u3048\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>\u6b20\u70b9<\/h3>\n<ul>\n<li><strong>\u5358\u7d14\u3055\u3068\u8907\u96d1\u3055\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5\uff1a<\/strong>\u5358\u7d14\u306a\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30cd\u30b9\u30c8\u3055\u308c\u305f\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u304c\u56f3\u3092\u3054\u3061\u3083\u3054\u3061\u3083\u306b\u3057\u3001\u6280\u8853\u7684\u3067\u306a\u3044\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u306b\u3068\u3063\u3066\u8aad\u307f\u306b\u304f\u304f\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u7fd2\u5f97\u306e\u96e3\u6613\u5ea6\uff1a<\/strong>UML\u8868\u8a18\u306b\u99b4\u67d3\u307f\u306e\u306a\u3044\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u306f\u3001<code>alt<\/code>\u5bfe\u6bd4\u3057\u3066<code>opt<\/code>\u30d5\u30ec\u30fc\u30e0\u3092\u3059\u3050\u306b\u7406\u89e3\u3067\u304d\u306a\u304f\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u4fdd\u5b88\u6027\uff1a<\/strong>\u8907\u6570\u306e\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u3092\u542b\u3080\u8a73\u7d30\u306a\u56f3\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u9032\u5316\u306b\u4f34\u3044\u66f4\u65b0\u306b\u591a\u304f\u306e\u52aa\u529b\u3092\u8981\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u306e\u8907\u96d1\u306a\u7e54\u7269\u306e\u4e2d\u3067\u3001<a href=\"https:\/\/guides.visual-paradigm.com\/understanding-sequence-diagrams-a-comprehensive-guide\/\">\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3<\/a>\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u52d5\u4f5c\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u30a2\u30fc\u30c6\u30a3\u30d5\u30a1\u30af\u30c8\u3068\u3057\u3066\u5b58\u5728\u3057\u307e\u3059\u3002<strong>\u30eb\u30fc\u30d7<\/strong>, <strong>\u4ee3\u66ff<\/strong>\u3001\u304a\u3088\u3073<strong>\u30aa\u30d7\u30b7\u30e7\u30f3<\/strong>\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306e\u5c0e\u5165\u306b\u3088\u308a\u3001\u3053\u308c\u3089\u306e\u56f3\u306f\u8868\u73fe\u529b\u306e\u65b0\u3057\u3044\u6bb5\u968e\u306b\u5230\u9054\u3057\u307e\u3059\u3002<\/p>\n<p>\u30eb\u30fc\u30d7\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306f\u7e70\u308a\u8fd4\u3057\u306e\u7269\u8a9e\u3092\u7d21\u304e\u3001\u4ee3\u66ff\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306f\u5206\u5c90\u3059\u308b\u7269\u8a9e\u3092\u6307\u63ee\u3057\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306f\u9078\u629e\u7684\u306a\u76f8\u4e92\u4f5c\u7528\u3092\u7e4a\u7d30\u306b\u6271\u3044\u307e\u3059\u3002Visual Paradigm AI\u306a\u3069\u306e\u30c4\u30fc\u30eb\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3053\u308c\u3089\u306e\u8907\u96d1\u306a\u8981\u7d20\u3092\u7c21\u5358\u306b\u5b9f\u88c5\u3067\u304d\u3001\u56f3\u304c\u6b63\u78ba\u304b\u3064\u6d17\u7df4\u3055\u308c\u305f\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002<strong>Visual Paradigm AI<\/strong>\u3044\u305a\u308c\u306b\u305b\u3088\u3001\u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u4f5c\u6210\u3067\u3042\u308c\u3001\u65b0\u3057\u3044\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u8a2d\u8a08\u3067\u3042\u308c\u3001\u3053\u308c\u3089\u306e\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u3092\u7fd2\u5f97\u3059\u308b\u3053\u3068\u306f\u3001\u52b9\u679c\u7684\u306a\u6280\u8853\u7684\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u9375\u3067\u3059\u3002<\/p>\n<div class=\"related-articles-section\" style=\"margin-top: 2rem; border-top: 1px solid #ccc; padding-top: 1.5rem;\">\n<h3>\u95a2\u9023\u3059\u308bVisual Paradigm\u30ea\u30bd\u30fc\u30b9<\/h3>\n<p>\u8a73\u7d30\u60c5\u5831\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u95a2\u9023\u8a18\u4e8b\u304a\u3088\u3073\u30ac\u30a4\u30c9\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\uff1a<\/p>\n<ul style=\"list-style-type: disc; margin-left: 1.5rem;\">\n<li style=\"margin-bottom: 0.5rem;\">\n<a href=\"https:\/\/guides.visual-paradigm.com\/mastering-sequence-diagrams-unraveling-the-power-of-fragments-loop-alternative-and-option\/\" rel=\"noopener\" target=\"_blank\">\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e\u7fd2\u5f97\uff1a\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306e\u529b\u3092\u89e3\u304d\u660e\u304b\u3059 &#8211; \u30eb\u30fc\u30d7&#8230;<\/a>\n<\/li>\n<li style=\"margin-bottom: 0.5rem;\">\n<a href=\"https:\/\/guides.visual-paradigm.com\/understanding-sequence-diagrams-a-comprehensive-guide\/\" rel=\"noopener\" target=\"_blank\">\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e\u7406\u89e3\uff1a\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9<\/a>\n<\/li>\n<li style=\"margin-bottom: 0.5rem;\">\n<a href=\"https:\/\/guides.visual-paradigm.com\/mastering-sequence-diagram-modeling-a-practical-approach-with-visual-paradigm\/\" rel=\"noopener\" target=\"_blank\">\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u30e2\u30c7\u30ea\u30f3\u30b0\u306e\u7fd2\u5f97\uff1aVisual\u3092\u6d3b\u7528\u3057\u305f\u5b9f\u8df5\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1<\/a>\n<\/li>\n<li style=\"margin-bottom: 0.5rem;\">\n<a href=\"https:\/\/guides.visual-paradigm.com\/understanding-sequence-diagrams-a-visual-blueprint-of-software-interactions\/\" rel=\"noopener\" target=\"_blank\">\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e\u7406\u89e3\uff1a\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u8996\u899a\u7684\u8a2d\u8a08\u56f3&#8230;<\/a>\n<\/li>\n<li style=\"margin-bottom: 0.5rem;\">\n<a href=\"https:\/\/guides.visual-paradigm.com\/page\/13\/\" rel=\"noopener\" target=\"_blank\">Visual Paradigm\u30ac\u30a4\u30c9 &#8211; 43\u30da\u30fc\u30b8\u4e2d\u306e13\u30da\u30fc\u30b8\u76ee &#8211; \u3082\u3046\u4e00\u3064\u306eWordPress\u30b5\u30a4\u30c8<\/a>\n<\/li>\n<li style=\"margin-bottom: 0.5rem;\">\n<a href=\"https:\/\/guides.visual-paradigm.com\/category\/uml\/page\/2\/\" rel=\"noopener\" target=\"_blank\">UML\u30a2\u30fc\u30ab\u30a4\u30d6 &#8211; 9\u30da\u30fc\u30b8\u4e2d\u306e2\u30da\u30fc\u30b8\u76ee &#8211; Visual Paradigm\u30ac\u30a4\u30c9<\/a>\n<\/li>\n<li style=\"margin-bottom: 0.5rem;\">\n<a href=\"https:\/\/www.visual-paradigm.com\/learning\/handbooks\/software-design-handbook\/sequence-diagram.jsp\" rel=\"noopener\" target=\"_blank\">\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3 &#8211; Visual Paradigm<\/a>\n<\/li>\n<li style=\"margin-bottom: 0.5rem;\">\n<a href=\"https:\/\/guides.visual-paradigm.com\/creating-sequence-diagrams-in-uml-a-comprehensive-tutorial\/\" rel=\"noopener\" target=\"_blank\">UML\u306b\u304a\u3051\u308b\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e\u4f5c\u6210\uff1a\u5305\u62ec\u7684\u306a\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb<\/a>\n<\/li>\n<li style=\"margin-bottom: 0.5rem;\">\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/tutorials\/sequence-diagram-tutorial\/\" rel=\"noopener\" target=\"_blank\">\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb &#8211; Visual Paradigm<\/a>\n<\/li>\n<li style=\"margin-bottom: 0.5rem;\">\n<a href=\"https:\/\/guides.visual-paradigm.com\/understanding-sequence-diagram-notation-in-uml\/\" rel=\"noopener\" target=\"_blank\">UML\u306b\u304a\u3051\u308b\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e\u8a18\u6cd5\u306e\u7406\u89e3<\/a>\n<\/li>\n<\/ul>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306e\u65ad\u7247\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\uff1a\u30eb\u30fc\u30d7\u3001\u4ee3\u66ff\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u306e\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9 \u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u52d5\u7684\u76f8\u4e92\u4f5c\u7528\u306e\u8a2d\u8a08\u56f3\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u6642\u9593\u3068\u3068\u3082\u306b\u3069\u306e\u3088\u3046\u306b\u901a\u4fe1\u3059\u308b\u304b\u3092\u8996\u899a\u7684\u306b\u63cf\u5199\u3059\u308b\u3002\u3057\u304b\u3057\u3001\u73fe\u5b9f\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u307b\u3068\u3093\u3069\u7dda\u5f62\u3067\u306f\u306a\u3044\u3002\u7e70\u308a\u8fd4\u3057\u3001\u610f\u601d\u6c7a\u5b9a\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u7d4c\u8def\u304c\u542b\u307e\u308c\u308b\u3002\u3053\u308c\u3089\u306e\u56f3\u306e\u4f1d\u9054\u529b\u3092\u5f37\u5316\u3059\u308b\u305f\u3081\u306b\u3001\u65ad\u7247\u304c\u767b\u5834\u3057\u3001\u3053\u308c\u3089\u306e\u8907\u96d1\u3055\u3092\u6d17\u7df4\u3055\u308c\u305f\u65b9\u6cd5\u3067\u8868\u73fe\u3067\u304d\u308b\u3002 \u3053\u306e\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9\u3067\u306f\u30013\u3064\u306e\u4e3b\u8981\u306a\u65ad\u7247\u306e\u672c\u8cea\u3092\u660e\u3089\u304b\u306b\u3059\u308b\u2014\u30eb\u30fc\u30d7, \u4ee3\u66ff\u3001\u304a\u3088\u3073\u30aa\u30d7\u30b7\u30e7\u30f3\u2014\u305d\u3057\u3066\u3001\u305d\u308c\u3089\u304c\u6280\u8853\u6587\u66f8\u306e\u6df1\u3055\u3068\u660e\u78ba\u3055\u306b\u3069\u306e\u3088\u3046\u306b\u8ca2\u732e\u3059\u308b\u304b\u3092\u691c\u8a3c\u3059\u308b\u3002 \u4e3b\u8981\u306a\u6982\u5ff5 \u7279\u5b9a\u306e\u65ad\u7247\u306e\u7a2e\u985e\u306b\u6df1\u5165\u308a\u3059\u308b\u524d\u306b\u3001UML\uff08\u7d71\u5408\u30e2\u30c7\u30ea\u30f3\u30b0\u8a00\u8a9e\uff09\u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u3067\u4f7f\u7528\u3055\u308c\u308b\u57fa\u790e\u7684\u306a\u7528\u8a9e\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3042\u308b. \u30e9\u30a4\u30d5\u30e9\u30a4\u30f3\uff1a\u76f8\u4e92\u4f5c\u7528\u306b\u304a\u3051\u308b\u500b\u3005\u306e\u53c2\u52a0\u8005\uff08\u4f8b\uff1a\u30af\u30e9\u30b9\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3001\u30a2\u30af\u30bf\u30fc\uff09\u3092\u8868\u3059\u3002 \u30e1\u30c3\u30bb\u30fc\u30b8\uff1a\u30e9\u30a4\u30d5\u30e9\u30a4\u30f3\u9593\u306e\u901a\u4fe1\u3067\u3042\u308a\u3001\u901a\u5e38\u306f\u77e2\u5370\u3067\u793a\u3055\u308c\u308b\u3002 \u7d50\u5408\u65ad\u7247\uff1a\u8907\u96d1\u306a\u76f8\u4e92\u4f5c\u7528\u306e\u610f\u5473\u8ad6\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u8ad6\u7406\u7684\u30b0\u30eb\u30fc\u30d7\u3002\u305f\u3068\u3048\u3070\u30eb\u30fc\u30d7\u3084\u6761\u4ef6\u306a\u3069\u3002 \u76f8\u4e92\u4f5c\u7528\u6f14\u7b97\u5b50\uff1a\u65ad\u7247\u306e\u5de6\u4e0a\u9685\u306b\u3042\u308b\u30ad\u30fc\u30ef\u30fc\u30c9\uff08\u4f8b\uff1a\u30eb\u30fc\u30d7, alt, opt) \u306f\u305d\u306e\u52d5\u4f5c\u3092\u5b9a\u7fa9\u3059\u308b\u3002 \u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306e\u8aac\u660e\uff1a\u30eb\u30fc\u30d7\u3001\u4ee3\u66ff\u3001\u30aa\u30d7\u30b7\u30e7\u30f3 \u30b7\u30fc\u30b1\u30f3\u30b9\u56f3\u306f\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3042\u308b\u304c\u3001\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u305d\u306e\u771f\u306e\u67d4\u8edf\u6027\u304c\u767a\u63ee\u3055\u308c\u308b\u3002\u6700\u3082\u4e00\u822c\u7684\u306a3\u3064\u306e\u30bf\u30a4\u30d7\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u3053\u3046\u3002 1. \u30eb\u30fc\u30d7\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8 The \u30eb\u30fc\u30d7\u30eb\u30fc\u30d7\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u306f\u53cd\u5fa9\u7684\u306a\u52d5\u4f5c\u3092\u8868\u73fe\u3059\u308b\u6a19\u6e96\u7684\u306a\u65b9\u6cd5\u3067\u3042\u308b\u3002\u7279\u5b9a\u306e\u76f8\u4e92\u4f5c\u7528\u306e\u30bb\u30c3\u30c8\u304c\u8907\u6570\u56de\u7e70\u308a\u8fd4\u3055\u308c\u308b\u304b\u3001\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u308b\u307e\u3067\u7e70\u308a\u8fd4\u3055\u308c\u308b\u72b6\u6cc1\u3092\u30e2\u30c7\u30eb\u5316\u3059\u308b\u3002 \u8996\u899a\u7684\u8868\u8a18\uff1a\u30ad\u30fc\u30ef\u30fc\u30c9 loop \u3092\u5de6\u4e0a\u306b\u914d\u7f6e\u3057\u305f\u9577\u65b9\u5f62\u3002 \u4f7f\u7528\u4f8b\uff1a\u30a2\u30a4\u30c6\u30e0\u306e\u30ea\u30b9\u30c8\u51e6\u7406\u3001\u63a5\u7d9a\u306e\u518d\u8a66\u884c\u3001\u7e70\u308a\u8fd4\u3057\u306e\u30e6\u30fc\u30b6\u30fc\u64cd\u4f5c\u3002 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