{"id":9413,"date":"2025-12-02T14:43:01","date_gmt":"2025-12-02T06:43:01","guid":{"rendered":"https:\/\/www.cybermedian.com\/ja\/uml-object-diagram-capturing-a-system-snapshot\/"},"modified":"2026-04-14T10:58:07","modified_gmt":"2026-04-14T10:58:07","slug":"uml-object-diagram-capturing-a-system-snapshot","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/ja\/uml-object-diagram-capturing-a-system-snapshot\/","title":{"rendered":"UML\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3\uff1a\u30b7\u30b9\u30c6\u30e0\u306e\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u306e\u8a18\u9332"},"content":{"rendered":"<p data-path-to-node=\"4\">\u305d\u306e<a href=\"https:\/\/chat.visual-paradigm.com\/diagram\/uml-object-diagram\/\"><b>UML\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3<\/b><\/a>\u306f\u3001\u69cb\u9020\u30e2\u30c7\u30ea\u30f3\u30b0\u30c4\u30fc\u30eb\u306e\u30b0\u30eb\u30fc\u30d7\u5185\u306b\u304a\u3044\u3066\u30e6\u30cb\u30fc\u30af\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u308b\uff1a\u305d\u308c\u306f\u30b7\u30b9\u30c6\u30e0\u306e\u5177\u4f53\u7684\u306a\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30ec\u30d9\u30eb\u306e\u30d3\u30e5\u30fc\u3092\u63d0\u4f9b\u3059\u308b\u3002\u4e00\u65b9\u3001<b>\u30af\u30e9\u30b9\u56f3<\/b>\uff08\u8a2d\u8a08\u56f3\uff09\u306f\u62bd\u8c61\u7684\u306a\u53ef\u80fd\u6027\u3092\u793a\u3059\u2014\u2014\u5b58\u5728\u3057\u3046\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u7a2e\u985e\u3068\u305d\u308c\u3089\u306e\u6f5c\u5728\u7684\u306a\u95a2\u4fc2\u3092\u793a\u3059\u3002<i>\u5b58\u5728\u3057\u3046\u308b<\/i>\u5b58\u5728\u3057\u3046\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u305d\u308c\u3089\u306e\u6f5c\u5728\u7684\u306a\u95a2\u4fc2\u2014\u2014\u4e00\u65b9\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3\u306f\u7279\u5b9a\u306e\u77ac\u9593\u306b\u5b9f\u969b\u306b\u5b58\u5728\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u793a\u3059\u3002<i>\u5b9f\u969b\u306b\u5b58\u5728\u3059\u308b<\/i>\u7279\u5b9a\u306e\u77ac\u9593\u306b\u5b58\u5728\u3059\u308b\u3082\u306e\u3067\u3042\u308a\u3001\u305d\u306e\u73fe\u5728\u306e\u30c7\u30fc\u30bf\u5024\u3068\u78ba\u7acb\u3055\u308c\u305f\u63a5\u7d9a\u3092\u542b\u3080\u3002<\/p>\n<p data-path-to-node=\"5\">\u30af\u30e9\u30b9\u56f3\u3092\u30b1\u30fc\u30ad\u306e\u30ec\u30b7\u30d4\u3068\u8003\u3048\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u308c\u306f\u6750\u6599\u3068\u624b\u9806\u3092\u8a73\u7d30\u306b\u793a\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3\u306f\u4eca\u65e5\u5b9f\u969b\u306b\u713c\u304b\u308c\u305f\u7279\u5b9a\u306e\u30b1\u30fc\u30ad\u306e\u5199\u771f\u3067\u3042\u308a\u3001\u305d\u306e\u30b5\u30a4\u30ba\u3001\u30d5\u30a9\u30f3\u30c0\u30f3\u306e\u8272\u3001\u30c6\u30fc\u30d6\u30eb\u4e0a\u306e\u5b9f\u969b\u306e\u914d\u7f6e\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<p data-path-to-node=\"5\">\u3055\u3089\u306b\u8a73\u3057\u304f\u77e5\u308b\uff1a<a href=\"https:\/\/www.cybermedian.com\/class-vs-object-diagram-when-to-use-instances\/\">\u30af\u30e9\u30b9\u56f3\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3\u306e\u9055\u3044\u2014\u2014\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f7f\u7528\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0<\/a> .<\/p>\n<p data-path-to-node=\"5\"><img alt=\"Object diagram of University Course Enrollment System\" class=\"alignnone size-full wp-image-14207\" decoding=\"async\" height=\"693\" loading=\"lazy\" sizes=\"auto, (max-width: 1144px) 100vw, 1144px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/University-Course-Enrollment-System.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/University-Course-Enrollment-System.png 1144w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/University-Course-Enrollment-System-300x182.png 300w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/University-Course-Enrollment-System-1024x620.png 1024w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/University-Course-Enrollment-System-768x465.png 768w\" width=\"1144\"\/><\/p>\n<h3>\u30af\u30e9\u30b9\u56f3\u3068\u306e\u95a2\u4fc2<\/h3>\n<p data-path-to-node=\"7\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3\u306f\u6839\u672c\u7684\u306b<a href=\"https:\/\/www.cybermedian.com\/mastering-the-uml-class-diagram-syntax-and-examples\/\">\u30af\u30e9\u30b9\u56f3<\/a>\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30ec\u30d9\u30eb\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3042\u308b\u3002\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3\u5185\u306e\u3059\u3079\u3066\u306e\u8981\u7d20\u306f\u3001\u30af\u30e9\u30b9\u56f3\u5185\u306e\u5bfe\u5fdc\u3059\u308b\u30af\u30e9\u30b9\u306b\u3088\u3063\u3066\u5b9a\u7fa9\u3055\u308c\u305f\u69cb\u9020\u306b\u5f93\u308f\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n<ol data-path-to-node=\"8\" start=\"1\">\n<li>\n<p data-path-to-node=\"8,0,0\"><b>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\uff1a<\/b> \u56f3\u4e2d\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u3001\u7279\u5b9a\u306e\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u3042\u308b\u3002<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"8,1,0\"><b> \u30ea\u30f3\u30af\uff1a<\/b> 2\u3064\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u9593\u306e\u30ea\u30f3\u30af\u306f\u3001\u305d\u308c\u3089\u306e\u5bfe\u5fdc\u3059\u308b\u30af\u30e9\u30b9\u306e\u9593\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u7279\u5b9a\u306e\u95a2\u9023\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u3042\u308b\u3002<\/p>\n<\/li>\n<\/ol>\n<p><img alt=\"The Relationship to Class Diagrams\" class=\"alignnone size-full wp-image-14208\" decoding=\"async\" height=\"232\" loading=\"lazy\" sizes=\"auto, (max-width: 493px) 100vw, 493px\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/The-Relationship-to-Class-Diagrams.png\" srcset=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/The-Relationship-to-Class-Diagrams.png 493w, https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/12\/The-Relationship-to-Class-Diagrams-300x141.png 300w\" width=\"493\"\/><\/p>\n<p data-path-to-node=\"9\">\u3053\u306e\u5177\u4f53\u7684\u306a\u53ef\u8996\u5316\u306f\u3001\u62bd\u8c61\u7684\u3067\u7406\u8ad6\u7684\u306a\u8a2d\u8a08\u3092\u691c\u8a3c\u3059\u308b\u4e0a\u3067\u4e0d\u53ef\u6b20\u3067\u3042\u308b\u3002\u3082\u3057\u30af\u30e9\u30b9\u56f3\u304c\u8aa4\u3063\u3066\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3\u3092\u4f7f\u3063\u3066\u73fe\u5b9f\u7684\u306a\u30b7\u30ca\u30ea\u30aa\u3092\u30e2\u30c7\u30eb\u5316\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u305d\u306e\u6b20\u9665\u304c\u3059\u3050\u306b\u660e\u3089\u304b\u306b\u306a\u308b\u3053\u3068\u304c\u591a\u3044\u3002<\/p>\n<h3>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3\u306e\u4e3b\u8981\u306a\u8981\u7d20<\/h3>\n<h4>1. \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9<\/h4>\n<p data-path-to-node=\"12\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u4e3b\u306a\u8981\u7d20\u3067\u3042\u308a\u3001\u77e9\u5f62\u3068\u3057\u3066\u8868\u3055\u308c\u308b\u3002\u8868\u8a18\u6cd5\u306f\u3001\u30af\u30e9\u30b9\u3068\u660e\u78ba\u306b\u533a\u5225\u3067\u304d\u308b\u3088\u3046\u306b\u7279\u5b9a\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u5f93\u3046\u3002<\/p>\n<div data-path-to-node=\"13\">\n<div class=\"math-block\" data-math=\"text{objectName : ClassName}\"><em>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u540d : \u30af\u30e9\u30b9\u540d<\/em><\/div>\n<\/div>\n<ul data-path-to-node=\"14\">\n<li>\n<p data-path-to-node=\"14,0,0\"><b><code>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u540d<\/code>\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\uff09\uff1a<\/b> \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u4e0e\u3048\u3089\u308c\u305f\u7279\u5b9a\u306e\u540d\u524d\uff08\u4f8b\uff1a&#8221;<code>myOrder<\/code>, <code>userA<\/code>\uff09\u3002\u540d\u524d\u306f\u4e0b\u7dda\u304c\u5f15\u304b\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"14,1,0\"><b><code>ClassName<\/code>:<\/b>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3055\u308c\u308b\u30af\u30e9\u30b9\u306e\u540d\u524d\u3002<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"14,2,0\"><b>\u30b3\u30ed\u30f3\u533a\u5207\u308a\uff1a<\/b>\u30b3\u30ed\u30f3\uff08<code>:<\/code>\uff09\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u540d\u3068\u30af\u30e9\u30b9\u540d\u3092\u533a\u5207\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"14,3,0\"><b>\u4e0b\u7dda\uff1a<\/b>\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u540d\u3068\u30af\u30e9\u30b9\u540d\u306e\u4e21\u65b9\u3068\u3082<b>\u4e0b\u7dda\u3092\u5f15\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059<\/b>\u3053\u308c\u306f\u30af\u30e9\u30b9\u5b9a\u7fa9\u3067\u306f\u306a\u304f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u8868\u3059\u3053\u3068\u3092\u793a\u3059\u305f\u3081\u3067\u3059\u3002\uff08\u4f8b\uff1a<code>userB : User<\/code>\u307e\u305f\u306f<code>: Order<\/code>)<\/p>\n<\/li>\n<\/ul>\n<h4>2. \u5c5e\u6027\u5024<\/h4>\n<p data-path-to-node=\"16\">\u30af\u30e9\u30b9\u56f3\u3068\u306f\u7570\u306a\u308a\u3001\u3053\u308c\u306f<i>\u540d\u524d<\/i>\u306e\u5c5e\u6027\u3092\u793a\u3059\u306e\u3067\u306f\u306a\u304f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3\u306f\u305d\u306e\u7279\u5b9a\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e<i>\u73fe\u5728\u306e\u5024<\/i>\u5c5e\u6027\u306e\u73fe\u5728\u306e\u5024\u3092\u793a\u3057\u307e\u3059\u3002\u3053\u308c\u304c\u56f3\u3092\u300c\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u300d\u3068\u547c\u3076\u7406\u7531\u3067\u3059\u3002<\/p>\n<p data-path-to-node=\"17\">\u5c5e\u6027\u306f\u77e9\u5f62\u306e2\u756a\u76ee\u306e\u30b3\u30f3\u30d1\u30fc\u30c8\u30e1\u30f3\u30c8\u306b\u3001\u4ee5\u4e0b\u306e\u69cb\u6587\u3092\u4f7f\u3063\u3066\u8a18\u8f09\u3055\u308c\u307e\u3059\uff1a<\/p>\n<div data-path-to-node=\"18\">\n<div class=\"math-block\" data-math=\"text{attributeName = value}\">attributeName = value<\/div>\n<\/div>\n<ul data-path-to-node=\"19\">\n<li>\n<p data-path-to-node=\"19,0,0\"><i>\u4f8b\uff1a<\/i>\u540d\u524d\u304c<code>myCar : Vehicle<\/code> \u306f\u5c5e\u6027\u5024 \u3092\u6301\u3064\u53ef\u80fd\u6027\u304c\u3042\u308b <code>color = \"red\"<\/code> \u3068 <code>speed = 65<\/code>.<\/p>\n<\/li>\n<\/ul>\n<h4>3. \u30ea\u30f3\u30af<\/h4>\n<p data-path-to-node=\"21\">A <b>\u30ea\u30f3\u30af<\/b> \u306f \u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u3042\u308b <b>\u95a2\u9023<\/b> \uff08\u95a2\u4fc2\uff09\u3092\u30af\u30e9\u30b9\u56f3\u3067\u5b9a\u7fa9\u3057\u305f\u3082\u306e\u3067\u3042\u308b\u3002\u30ea\u30f3\u30af\u306f\u30012\u3064\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u77e9\u5f62\u3092\u7d50\u3076\u5358\u7d14\u3067\u5b9f\u7dda\u306e\u7dda\u3068\u3057\u3066\u63cf\u304b\u308c\u308b\u3002<\/p>\n<p data-path-to-node=\"22\">\u30ea\u30f3\u30af\u306f\u3001\u3042\u308b\u7279\u5b9a\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u73fe\u5728\u3001\u5225\u306e\u7279\u5b9a\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068\u3069\u306e\u3088\u3046\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u304b\u3001\u307e\u305f\u306f\u53c2\u7167\u3057\u3066\u3044\u308b\u304b\u3092\u793a\u3059\u3002\u591a\u91cd\u6027\u5236\u7d04\uff08\u4f8b\uff1a<span class=\"math-inline\" data-math=\"1..*\">$1..*$<\/span> \u307e\u305f\u306f <span class=\"math-inline\" data-math=\"0..1\">$0..1$<\/span>\uff09\u306f\u3001\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u5185\u306e\u3053\u308c\u3089\u306e\u30ea\u30f3\u30af\u306e\u5b58\u5728\u306b\u3088\u3063\u3066\u691c\u8a3c\u3055\u308c\u308b\u3002<\/p>\n<ul data-path-to-node=\"23\">\n<li>\n<p data-path-to-node=\"23,0,0\"><i>\u4f8b\uff1a<\/i> \u30af\u30e9\u30b9\u56f3\u306b \u3068 \u306e\u95a2\u9023\u304c\u793a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001<code>Customer<\/code> \u3068 <code>Order<\/code>\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3\u3067\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u3068 \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u306e\u9593\u306b\u5177\u4f53\u7684\u306a\u30ea\u30f3\u30af\u304c\u793a\u3055\u308c\u308b\u3002<code>cust1 : Customer<\/code> \u3068\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 <code>order52 : Order<\/code>.<\/p>\n<\/li>\n<\/ul>\n<h3>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3\u3092\u4f7f\u3046\u7406\u7531\u3068\u30bf\u30a4\u30df\u30f3\u30b0<\/h3>\n<p data-path-to-node=\"25\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u56f3\u306f\u3001\u4e3b\u306b\u5206\u6790\u304a\u3088\u3073\u8a2d\u8a08\u6bb5\u968e\u3067\u4ee5\u4e0b\u306e2\u3064\u306e\u76ee\u7684\u306e\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\uff1a<\/p>\n<ol data-path-to-node=\"26\" start=\"1\">\n<li>\n<p 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