{"id":9670,"date":"2025-01-10T18:02:41","date_gmt":"2025-01-10T10:02:41","guid":{"rendered":"https:\/\/www.cybermedian.com\/ja\/mastering-data-modeling-from-conceptual-to-physical-design\/"},"modified":"2026-04-14T11:07:40","modified_gmt":"2026-04-14T11:07:40","slug":"mastering-data-modeling-from-conceptual-to-physical-design","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/ja\/mastering-data-modeling-from-conceptual-to-physical-design\/","title":{"rendered":"\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u306e\u7fd2\u5f97\uff1a\u30b3\u30f3\u30bb\u30d7\u30c1\u30e5\u30a2\u30eb\u304b\u3089\u7269\u7406\u8a2d\u8a08\u3078"},"content":{"rendered":"<p>\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u306f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b7\u30b9\u30c6\u30e0\u3092\u8a18\u9332\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u91cd\u8981\u306a\u6280\u8853\u3067\u3042\u308b\u3002<a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-modeling\/what-is-entity-relationship-diagram\/\">\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3<\/a> (ERD)\u3002\u3053\u308c\u3089\u306e\u56f3\u306f\u3001\u4f01\u696d\u306e\u30d3\u30b8\u30cd\u30b9\u8981\u4ef6\u3092\u5f37\u529b\u306b\u8868\u73fe\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u304a\u3088\u3073\u305d\u306e\u57fa\u76e4\u3068\u306a\u308b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u8a2d\u8a08\u3068\u5b9f\u88c5\u306b\u304a\u3044\u3066\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a2\u30ca\u30ea\u30b9\u30c8\u3084\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u306e\u30ac\u30a4\u30c9\u3068\u3057\u3066\u6a5f\u80fd\u3059\u308b\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306e\u7570\u306a\u308b\u30ec\u30d9\u30eb\u2014\u30b3\u30f3\u30bb\u30d7\u30c1\u30e5\u30a2\u30eb\u3001\u8ad6\u7406\u7684\u3001\u7269\u7406\u7684\u2014\u3092\u691c\u8a0e\u3057\u3001\u305d\u306e\u4f7f\u7528\u4f8b\u3092\u793a\u3059\u3002<\/p>\n<p><iframe allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\" class=\"__youtube_prefs__ epyt-is-override no-lazyload\" data-no-lazy=\"1\" data-origheight=\"456\" data-origwidth=\"810\" data-skipgform_ajax_framebjll=\"\" height=\"456\" id=\"_ytid_48191\" loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/uIbyZEt4AIQ?enablejsapi=1&amp;autoplay=0&amp;cc_load_policy=0&amp;cc_lang_pref=&amp;iv_load_policy=1&amp;loop=0&amp;modestbranding=0&amp;rel=1&amp;fs=1&amp;playsinline=0&amp;autohide=2&amp;theme=dark&amp;color=red&amp;controls=1&amp;\" title=\"YouTube player\" width=\"810\"><\/iframe><\/p>\n<h2>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3\uff08ERD\uff09\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h2>\n<p>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3<a href=\"https:\/\/www.visual-paradigm.com\/features\/database-design-with-erd-tools\/\">\uff08ERD\uff09\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u3088\u3063\u3066\u53ce\u96c6\u53ef\u80fd\u306a\u60c5\u5831\u3092\u56f3\u5f0f\u5316\u3057\u305f\u3082\u306e\u3067\u3042\u308b\u3002\u4e3b\u306b\u4e8c\u3064\u306e\u76ee\u7684\u3092\u6301\u3064\u3002<\/a>\uff08ERD\uff09\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u3088\u3063\u3066\u53ce\u96c6\u53ef\u80fd\u306a\u60c5\u5831\u3092\u56f3\u5f0f\u5316\u3057\u305f\u3082\u306e\u3067\u3042\u308b\u3002\u4e3b\u306b\u4e8c\u3064\u306e\u76ee\u7684\u3092\u6301\u3064\u3002<\/p>\n<ol>\n<li><strong>\u8a2d\u8a08\u6587\u66f8\u5316<\/strong>\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5c02\u9580\u5bb6\u304c\u5168\u4f53\u8a2d\u8a08\u3092\u7c21\u6f54\u304b\u3064\u6b63\u78ba\u306b\u8a18\u8ff0\u3067\u304d\u308b\u3002<\/li>\n<li><strong>\u30b9\u30ad\u30fc\u30de\u5909\u63db<\/strong>\uff1a\u7c21\u5358\u306b\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30b9\u30ad\u30fc\u30de\u306b\u5909\u63db\u3067\u304d\u308b\u3002<\/li>\n<\/ol>\n<h3>ERD\u306e\u69cb\u6210\u8981\u7d20<\/h3>\n<p><img alt=\"What is ERD\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/01\/what-is-erd.png\"\/><\/p>\n<ol>\n<li><strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3<\/strong>\uff1aERD\u306e\u57fa\u672c\u7684\u306a\u5bfe\u8c61\u3067\u3042\u308a\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5185\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u8868\u3059\uff08\u4f8b\uff1a\u751f\u5f92\u3001\u6388\u696d\u3001\u672c\uff09\u3002<\/li>\n<li><strong>\u5c5e\u6027<\/strong>\uff1a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u4e8b\u5b9f\u3084\u8a18\u8ff0\u3067\u3042\u308a\u3001\u30c6\u30fc\u30d6\u30eb\u306e\u5217\u3068\u306a\u308b\uff08\u4f8b\uff1a\u540d\u3001\u59d3\u3001\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\uff09\u3002<\/li>\n<li><strong>\u95a2\u4fc2<\/strong>\uff1a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u9593\u306e\u95a2\u9023\u3067\u3042\u308a\u3001\u3057\u3070\u3057\u3070\u52d5\u8a5e\u3067\u8868\u73fe\u3055\u308c\u308b\uff08\u4f8b\uff1a\u751f\u5f92\u304c\u6388\u696d\u306b\u767b\u9332\u3059\u308b\uff09\u3002<\/li>\n<\/ol>\n<h3>\u91cd\u8981\u306a\u6982\u5ff5<\/h3>\n<ul>\n<li><strong>\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc<\/strong>\uff1a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4e00\u610f\u306b\u8b58\u5225\u3059\u308b\u5c5e\u6027\u307e\u305f\u306f\u5c5e\u6027\u306e\u96c6\u5408\u3002<\/li>\n<li><strong>\u5916\u90e8\u30ad\u30fc<\/strong>\uff1a\u4e8c\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u30ea\u30f3\u30af\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u30ad\u30fc\u3067\u3042\u308a\u3001\u901a\u5e38\u306f\u4e00\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u304c\u5225\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u633f\u5165\u3055\u308c\u308b\u3002<\/li>\n<li><strong>\u57fa\u6570<\/strong>\uff1a\u4e00\u3064\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u304c\u5225\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3068\u95a2\u9023\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u51fa\u73fe\u56de\u6570\u3092\u5b9a\u7fa9\u3059\u308b\uff08\u4f8b\uff1a1\u5bfe1\u30011\u5bfe\u591a\u3001\u591a\u5bfe\u591a\uff09\u3002<\/li>\n<\/ul>\n<p><img alt=\"ERD cardinality\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/01\/erd-cardinality.png\"\/><\/p>\n<h2>ERD\u306e\u4f8b\uff1a\u9867\u5ba2\u306e\u4e88\u7d04<\/h2>\n<p>\u4ee5\u4e0b\u306e\u30d3\u30b8\u30cd\u30b9\u72b6\u6cc1\u3092\u691c\u8a0e\u3059\u308b\uff1a<\/p>\n<ul>\n<li>1\u4eba\u306e\u9867\u5ba2\u306f1\u56de\u4ee5\u4e0a\u306e\u4e88\u7d04\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/li>\n<li>1\u3064\u306e\u4e88\u7d04\u306f\u30011\u4eba\u304b\u30641\u4eba\u306e\u9867\u5ba2\u306b\u3088\u3063\u3066\u306e\u307f\u884c\u308f\u308c\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/li>\n<\/ul>\n<p>\u9867\u5ba2\u304b\u3089\u4e88\u7d04\u3078\u306e\u95a2\u9023\u4ed8\u3051\u3089\u308c\u308b\u57fa\u6570\u306f\u30011\u5bfe\u591a\u3067\u3059\u3002<\/p>\n<p><img alt=\"Simple ERD example\" decoding=\"async\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/01\/simple-erd-example.png\"\/><\/p>\n<h3>\u30b7\u30f3\u30d7\u30eb\u306aERD\u306e\u4f8b<\/h3>\n<p>\u4e0a\u8a18\u306eERD\u3067\u306f\u3001\u30af\u30ed\u30a6\u30ba\u30d5\u30c3\u30c8\u8868\u8a18\u6cd5\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n<ul>\n<li>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u540d\u306e\u4e0b\u306b\u5c5e\u6027\u3092\u30ea\u30b9\u30c8\u30a2\u30c3\u30d7\u3057\u305f\u30dc\u30c3\u30af\u30b9\u3067\u793a\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u95a2\u4fc2\u306f\u30012\u3064\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u9593\u306b\u5b9f\u7dda\u3067\u793a\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u57fa\u6570\u306f\u3001\u76f4\u7dda\u3068\u30cf\u30c3\u30b7\u30e5\u30de\u30fc\u30af\u3001\u307e\u305f\u306f\u30af\u30ed\u30a6\u30ba\u30d5\u30c3\u30c8\u306e\u3044\u305a\u308c\u304b\u3067\u8868\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u6982\u5ff5\u7684\u3001\u8ad6\u7406\u7684\u3001\u7269\u7406\u7684\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb<\/h2>\n<p>\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306f\u901a\u5e38\u30013\u3064\u306e\u62bd\u8c61\u5316\u30ec\u30d9\u30eb\u3067\u8868\u73fe\u3055\u308c\u307e\u3059\uff1a<a href=\"https:\/\/online.visual-paradigm.com\/knowledge\/visual-modeling\/conceptual-vs-logical-vs-physical-data-model\">\u6982\u5ff5\u7684\u3001\u8ad6\u7406\u7684\u3001\u7269\u7406\u7684<\/a>\u5404\u30ec\u30d9\u30eb\u306f\u7570\u306a\u308b\u76ee\u7684\u3092\u6301\u3061\u3001\u7570\u306a\u308b\u5bfe\u8c61\u8005\u3092\u5bfe\u8c61\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u6982\u5ff5\u7684\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb<\/h3>\n<p>\u6982\u5ff5\u7684\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306f\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3001\u305d\u306e\u5c5e\u6027\u3001\u304a\u3088\u3073\u95a2\u4fc2\u3092\u78ba\u7acb\u3057\u307e\u3059\u3002\u95a2\u4e0e\u3059\u308b\u30d3\u30b8\u30cd\u30b9\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8a8d\u8b58\u3059\u308b\u3053\u3068\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u6982\u8981\u3092\u63d0\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u30e2\u30c7\u30eb\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u3092\u6307\u5b9a\u305b\u305a\u306b\u3001\u3069\u306e\u3088\u3046\u306a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u304c\u5b58\u5728\u3059\u308b\u304b\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n<h4>\u7279\u5fb4<\/h4>\n<ul>\n<li><strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3<\/strong>\uff1a\u306f\u3044<\/li>\n<li><strong>\u95a2\u4fc2<\/strong>\uff1a\u306f\u3044<\/li>\n<li><strong>\u5217<\/strong>\uff1a\u306f\u3044<\/li>\n<li><strong>\u5217\u306e\u578b<\/strong>\uff1a\u30aa\u30d7\u30b7\u30e7\u30f3<\/li>\n<li><strong>\u4e3b\u30ad\u30fc<\/strong>\uff1a\u3044\u3044\u3048<\/li>\n<li><strong>\u5916\u90e8\u30ad\u30fc<\/strong>\uff1a\u3044\u3044\u3048<\/li>\n<\/ul>\n<h4>\u4f8b<\/h4>\n<p>\u6982\u5ff5\u7684ERD\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u793a\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\uff1a<code class=\"\">\u9867\u5ba2<\/code> \u304a\u3088\u3073 <code class=\"\">\u4e88\u7d04<\/code> 1\u5bfe\u591a\u306e\u95a2\u4fc2\u3092\u542b\u307f\u3001\u5217\u306e\u578b\u3084\u30ad\u30fc\u3092\u6307\u5b9a\u305b\u305a\u306b\u3002<\/p>\n<h3>\u8ad6\u7406\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb<\/h3>\n<p>\u8ad6\u7406\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306f\u3001\u30c7\u30fc\u30bf\u8981\u7d20\u306e\u69cb\u9020\u3092\u5b9a\u7fa9\u3057\u3001\u305d\u308c\u3089\u306e\u9593\u306e\u95a2\u4fc2\u3092\u8a2d\u5b9a\u3059\u308b\u3002\u5404\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u5185\u306e\u5217\u3092\u660e\u78ba\u306b\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3001\u30b3\u30f3\u30bb\u30d7\u30c1\u30e5\u30a2\u30eb\u30e2\u30c7\u30eb\u3092\u62e1\u5f35\u3057\u3001\u904b\u7528\u304a\u3088\u3073\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u5c0e\u5165\u3059\u308b\u3002<\/p>\n<h4>\u7279\u5fb4<\/h4>\n<ul>\n<li><strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3<\/strong>: \u306f\u3044<\/li>\n<li><strong>\u95a2\u4fc2<\/strong>: \u306f\u3044<\/li>\n<li><strong>\u5217<\/strong>: \u306f\u3044<\/li>\n<li><strong>\u5217\u306e\u578b<\/strong>: \u30aa\u30d7\u30b7\u30e7\u30f3<\/li>\n<li><strong>\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc<\/strong>: \u3044\u3044\u3048<\/li>\n<li><strong>\u5916\u90e8\u30ad\u30fc<\/strong>: \u3044\u3044\u3048<\/li>\n<\/ul>\n<h4>\u4f8b<\/h4>\n<p>\u8ad6\u7406ERD\u306b\u306f\u3001\u305f\u3068\u3048\u3070<code class=\"\">\u9867\u5ba2<\/code> \u304a\u3088\u3073<code class=\"\">\u4e88\u7d04<\/code> \u3068\u3044\u3063\u305f\u5c5e\u6027\u3092\u542b\u3080\u304c\u3001\u30c7\u30fc\u30bf\u578b\u306f\u6307\u5b9a\u3057\u306a\u3044\u3002<code class=\"\">\u9867\u5ba2ID<\/code>, <code class=\"\">\u4e88\u7d04ID<\/code>, <code class=\"\">\u65e5\u4ed8<\/code>\u3001\u304a\u3088\u3073<code class=\"\">\u6642\u9593<\/code>\u30c7\u30fc\u30bf\u578b\u3092\u6307\u5b9a\u3057\u306a\u3044\u3002<\/p>\n<h3>\u7269\u7406\u7684\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb<\/h3>\n<p>\u7269\u7406\u7684\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306f\u3001\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u5b9f\u969b\u306e\u8a2d\u8a08\u56f3\u3092\u8868\u3057\u307e\u3059\u3002\u3053\u306e\u30e2\u30c7\u30eb\u306f\u3001\u5404\u30ab\u30e9\u30e0\u306b\u578b\u3001\u9577\u3055\u3001NULL\u8a31\u5bb9\u6027\u306a\u3069\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u3067\u3001\u8ad6\u7406\u7684\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u3092\u8a73\u7d30\u306b\u8aac\u660e\u3057\u307e\u3059\u3002\u3053\u306e\u30e2\u30c7\u30eb\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u4f5c\u6210\u3055\u308c\u308b\u7279\u5b9a\u306eDBMS\u306e\u898f\u5247\u3084\u5236\u9650\u3092\u8003\u616e\u3057\u307e\u3059\u3002<\/p>\n<h4>\u7279\u5fb4<\/h4>\n<ul>\n<li><strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3<\/strong>: \u306f\u3044<\/li>\n<li><strong>\u95a2\u4fc2<\/strong>: \u306f\u3044<\/li>\n<li><strong>\u30ab\u30e9\u30e0<\/strong>: \u306f\u3044<\/li>\n<li><strong>\u30ab\u30e9\u30e0\u306e\u578b<\/strong>: \u306f\u3044<\/li>\n<li><strong>\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc<\/strong>: \u306f\u3044<\/li>\n<li><strong>\u5916\u90e8\u30ad\u30fc<\/strong>: \u306f\u3044<\/li>\n<\/ul>\n<p><strong><a href=\"https:\/\/online.visual-paradigm.com\/knowledge\/visual-modeling\/conceptual-vs-logical-vs-physical-data-model\">\u6982\u5ff5\u30e2\u30c7\u30eb vs \u8ad6\u7406\u30e2\u30c7\u30eb vs \u30c7\u30fc\u30bf\u30e2\u30c7\u30eb<\/a>:<\/strong><\/p>\n<table border=\"1\">\n<tbody>\n<tr>\n<th>ERD\u306e\u6a5f\u80fd<\/th>\n<th>\u6982\u5ff5<\/th>\n<th>\u8ad6\u7406<\/th>\n<th>\u7269\u7406<\/th>\n<\/tr>\n<tr>\n<td>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff08\u540d\u524d\uff09<\/td>\n<td>\u306f\u3044<\/td>\n<td>\u306f\u3044<\/td>\n<td>\u306f\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u95a2\u4fc2<\/td>\n<td>\u306f\u3044<\/td>\n<td>\u306f\u3044<\/td>\n<td>\u306f\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u30ab\u30e9\u30e0<\/td>\n<td><\/td>\n<td>\u306f\u3044<\/td>\n<td>\u306f\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u5217\u306e\u30bf\u30a4\u30d7<\/td>\n<td><\/td>\n<td>\u30aa\u30d7\u30b7\u30e7\u30f3<\/td>\n<td>\u306f\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u4e3b\u30ad\u30fc<\/td>\n<td><\/td>\n<td><\/td>\n<td>\u306f\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u5916\u90e8\u30ad\u30fc<\/td>\n<td><\/td>\n<td><\/td>\n<td>\u306f\u3044<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u4f8b<\/h4>\n<p>\u7269\u7406\u7684\u306aERD\u306b\u306f\u3001\u305f\u3068\u3048\u3070<code class=\"\">\u9867\u5ba2<\/code> \u304a\u3088\u3073 <code class=\"\">\u4e88\u7d04<\/code> \u4ee5\u4e0b\u306e\u5c5e\u6027\u3092\u6301\u3064<code class=\"\">\u9867\u5ba2ID (\u6574\u6570\u3001\u4e3b\u30ad\u30fc)<\/code>, <code class=\"\">\u4e88\u7d04ID (\u6574\u6570\u3001\u4e3b\u30ad\u30fc)<\/code>, <code class=\"\">\u65e5\u4ed8 (\u65e5\u4ed8)<\/code>\u3001\u304a\u3088\u3073<code class=\"\">\u6642\u9593 (\u6642\u9593)<\/code>\u3001\u6307\u5b9a\u3055\u308c\u305f\u30c7\u30fc\u30bf\u578b\u3068\u30ad\u30fc\u3092\u5099\u3048\u308b\u3002<\/p>\n<h3>\u6982\u5ff5\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb<\/h3>\n<p><img alt=\"Conceptual data model\" class=\"alignnone wp-image-5607 size-full\" decoding=\"async\" height=\"150\" loading=\"lazy\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/01\/conceptual-data-model.png\" width=\"395\"\/><\/p>\n<p><a class=\"knowledge-btn\" href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=ERDiagram&amp;name=Conceptual%20ERD&amp;external=https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/01\/conceptual-data-model.png\" rel=\"noopener\" target=\"_blank\">\u3053\u306e\u6982\u5ff5ERD\u3092\u7de8\u96c6\u3059\u308b<\/a><\/p>\n<p>\u6982\u5ff5ERD\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u306b\u5b58\u5728\u3059\u3079\u304d\u30d3\u30b8\u30cd\u30b9\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u305d\u308c\u3089\u306e\u95a2\u4fc2\u3092\u30e2\u30c7\u30eb\u5316\u3057\u307e\u3059\u3002\u6982\u5ff5\u30e2\u30c7\u30eb\u306f\u3001\u95a2\u4e0e\u3059\u308b\u30d3\u30b8\u30cd\u30b9\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8a8d\u8b58\u3059\u308b\u3053\u3068\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u6982\u8981\u3092\u63d0\u793a\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u958b\u767a\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u3069\u306e\u30c6\u30fc\u30d6\u30eb\u304c\u5b58\u5728\u3059\u308b\u304b\u3067\u306f\u306a\u304f\u3001\u3069\u306e\u3088\u3046\u306a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u304c\u5b58\u5728\u3059\u308b\u304b\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u300e\u591a\u5bfe\u591a\u300f\u306e\u30c6\u30fc\u30d6\u30eb\u306f\u8ad6\u7406\u7684\u307e\u305f\u306f\u7269\u7406\u7684\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306b\u5b58\u5728\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u6982\u5ff5\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u3067\u306f\u3001\u57fa\u6570\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u95a2\u4fc2\u3068\u3057\u3066\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<h4>\u6982\u5ff5\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306e\u4f8b<\/h4>\n<p>\u6ce8\u610f\uff1a\u6982\u5ff5ERD\u306f\u30012\u3064\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u9593\u306e\u300e\u3042\u308b\u7a2e\u306e\u300f\u95a2\u4fc2\u3092\u30e2\u30c7\u30eb\u5316\u3059\u308b\u969b\u306b\u4e00\u822c\u5316\u306e\u4f7f\u7528\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u4e09\u89d2\u5f62\u306f\u5f62\u72b6\u306e\u4e00\u7a2e\u3067\u3059\u3002\u3053\u306e\u4f7f\u7528\u65b9\u6cd5\u306fUML\u306e\u4e00\u822c\u5316\u3068\u4f3c\u3066\u3044\u307e\u3059\u3002\u6ce8\u610f\u3059\u3079\u304d\u306f\u3001\u4e00\u822c\u5316\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u306e\u306f\u6982\u5ff5ERD\u306e\u307f\u3067\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n<h3>\u8ad6\u7406\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb<\/h3>\n<p>\u8ad6\u7406ERD\u306f\u6982\u5ff5ERD\u306e\u8a73\u7d30\u7248\u3067\u3059\u3002\u8ad6\u7406ER\u30e2\u30c7\u30eb\u306f\u3001\u5404\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u5217\u3092\u660e\u78ba\u306b\u5b9a\u7fa9\u3057\u3001\u904b\u7528\u304a\u3088\u3073\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u6982\u5ff5\u30e2\u30c7\u30eb\u3092\u8c4a\u304b\u306b\u3059\u308b\u76ee\u7684\u3067\u958b\u767a\u3055\u308c\u307e\u3059\u3002\u8ad6\u7406\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306f\u3001\u5b9f\u969b\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u4f5c\u6210\u3055\u308c\u308b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b7\u30b9\u30c6\u30e0\u3068\u306f\u72ec\u7acb\u3057\u3066\u3044\u308b\u3082\u306e\u306e\u3001\u8a2d\u8a08\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u305d\u306e\u70b9\u3092\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h4>\u8ad6\u7406\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306e\u4f8b<\/h4>\n<p><img alt=\"\" class=\"alignnone wp-image-6848 size-full\" decoding=\"async\" height=\"238\" loading=\"lazy\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/01\/logical-er-model-1.png\" width=\"857\"\/><\/p>\n<p><a class=\"knowledge-btn\" href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=ERDiagram&amp;name=Logical%20ERD&amp;external=https%3A%2F%2Feditor.visual-paradigm.com%2Fwp-content%2Fuploads%2Fsites%2F7%2F2020%2F03%2Flogical-data-model.png\" rel=\"noopener\" target=\"_blank\">\u3053\u306e\u8ad6\u7406ERD\u306e\u4f8b\u3092\u7de8\u96c6\u3059\u308b<\/a><a id=\"toc8\" name=\"toc8\"><\/a><\/p>\n<h3>\u7269\u7406\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb<\/h3>\n<p>\u7269\u7406ERD\u306f\u3001\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u5b9f\u969b\u306e\u8a2d\u8a08\u56f3\u3092\u8868\u3057\u307e\u3059\u3002\u7269\u7406\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306f\u3001\u5404\u30ab\u30e9\u30e0\u306b\u578b\u3001\u9577\u3055\u3001NULL\u8a31\u5bb9\u53ef\u5426\u306a\u3069\u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u3067\u3001\u8ad6\u7406\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u3092\u8a73\u7d30\u5316\u3057\u307e\u3059\u3002\u7269\u7406ERD\u306f\u3001\u7279\u5b9a\u306eDBMS\u306b\u304a\u3044\u3066\u30c7\u30fc\u30bf\u304c\u3069\u306e\u3088\u3046\u306b\u69cb\u9020\u5316\u3055\u308c\u3001\u95a2\u9023\u4ed8\u3051\u3089\u308c\u308b\u3079\u304d\u304b\u3092\u8868\u3059\u305f\u3081\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u4f5c\u6210\u3055\u308c\u308b\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b7\u30b9\u30c6\u30e0\u306e\u898f\u5247\u3084\u5236\u9650\u3092\u8003\u616e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u30ab\u30e9\u30e0\u306e\u578b\u304cDBMS\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3001\u4e88\u7d04\u8a9e\u304c\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3084\u30ab\u30e9\u30e0\u306e\u540d\u524d\u306b\u306f\u4f7f\u7528\u3055\u308c\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u7269\u7406\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306e\u4f8b<\/p>\n<p><img alt=\"\" class=\"alignnone wp-image-6850 size-full\" decoding=\"async\" height=\"430\" loading=\"lazy\" src=\"https:\/\/www.cybermedian.com\/wp-content\/uploads\/2025\/01\/physical-er-model-1.png\" width=\"1032\"\/><\/p>\n<p><a class=\"knowledge-btn\" href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=ERDiagram&amp;name=Physical%20ERD&amp;external=https%3A%2F%2Feditor.visual-paradigm.com%2Fwp-content%2Fuploads%2Fsites%2F7%2F2020%2F03%2Fphysical-data-model.png\" rel=\"noopener\" target=\"_blank\">\u3053\u306e\u7269\u7406ERD\u306e\u4f8b\u3092\u7de8\u96c6\u3059\u308b<\/a><\/p>\n<h1>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u30c1\u30fc\u30e0\u306b\u6700\u9069\u306aER\u30e2\u30c7\u30ea\u30f3\u30b0\u30c4\u30fc\u30eb<\/h1>\n<p>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u306e\u5206\u91ce\u306b\u304a\u3044\u3066\u3001\u52b9\u679c\u7684\u306a\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u306f\u3001\u5805\u7262\u3067\u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u8a2d\u8a08\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\uff08ER\uff09\u30e2\u30c7\u30ea\u30f3\u30b0\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u57fa\u76e4\u3068\u306a\u308b\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u53ef\u8996\u5316\u3057\u8a08\u753b\u3059\u308b\u305f\u3081\u306b\u7528\u3044\u3089\u308c\u308b\u57fa\u672c\u7684\u306a\u6280\u8853\u3067\u3059\u3002ER\u30e2\u30c7\u30ea\u30f3\u30b0\u306b\u5229\u7528\u53ef\u80fd\u306a\u3055\u307e\u3056\u307e\u306a\u30c4\u30fc\u30eb\u306e\u4e2d\u3067\u3082\u3001Visual Paradigm\u306f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u30c1\u30fc\u30e0\u306b\u3068\u3063\u3066\u7406\u60f3\u7684\u306a\u9078\u629e\u80a2\u3067\u3059\u3002\u305d\u306e\u7406\u7531\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n<h2>\u5305\u62ec\u7684\u306a\u30e2\u30c7\u30ea\u30f3\u30b0\u6a5f\u80fd<\/h2>\n<p>Visual Paradigm\u306f\u3001\u6982\u5ff5\u7684\u3001\u8ad6\u7406\u7684\u3001\u7269\u7406\u7684ER\u56f3\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u5305\u62ec\u7684\u306a\u30c4\u30fc\u30eb\u30bb\u30c3\u30c8\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c1\u30fc\u30e0\u306f\u9ad8\u30ec\u30d9\u30eb\u306e\u30d3\u30b8\u30cd\u30b9\u8981\u4ef6\u304b\u3089\u3001\u5b9f\u88c5\u53ef\u80fd\u306a\u8a73\u7d30\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b9\u30ad\u30fc\u30de\u3078\u3068\u30b9\u30e0\u30fc\u30ba\u306b\u79fb\u884c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u62bd\u8c61\u5316\u30ec\u30d9\u30eb\u9593\u3092\u79fb\u884c\u3067\u304d\u308b\u80fd\u529b\u306b\u3088\u308a\u3001\u6700\u7d42\u7684\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u304c\u6b63\u78ba\u3067\u3042\u308a\u3001\u30d3\u30b8\u30cd\u30b9\u30cb\u30fc\u30ba\u3068\u6574\u5408\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>\u4f7f\u3044\u3084\u3059\u3044\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/h2>\n<p>Visual Paradigm\u306e\u76ee\u7acb\u3064\u7279\u5fb4\u306e\u4e00\u3064\u306f\u3001\u76f4\u611f\u7684\u3067\u4f7f\u3044\u3084\u3059\u3044\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3059\u3002\u30c9\u30e9\u30c3\u30b0\u30a2\u30f3\u30c9\u30c9\u30ed\u30c3\u30d7\u6a5f\u80fd\u306b\u3088\u308a\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3001\u5c5e\u6027\u3001\u95a2\u4fc2\u3092\u7c21\u5358\u306b\u8ffd\u52a0\u3067\u304d\u3001\u30e2\u30c7\u30ea\u30f3\u30b0\u30d7\u30ed\u30bb\u30b9\u3092\u30b9\u30e0\u30fc\u30ba\u306b\u3057\u307e\u3059\u3002\u3053\u306e\u4f7f\u3044\u3084\u3059\u3055\u306f\u3001\u6280\u8853\u7684\u30b9\u30ad\u30eb\u306e\u7570\u306a\u308b\u30c1\u30fc\u30e0\u30e1\u30f3\u30d0\u30fc\u306b\u3068\u3063\u3066\u7279\u306b\u6709\u76ca\u3067\u3042\u308a\u3001\u5168\u54e1\u304c\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u30d7\u30ed\u30bb\u30b9\u306b\u52b9\u679c\u7684\u306b\u8ca2\u732e\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<h2>\u9ad8\u5ea6\u306a\u6a5f\u80fd<\/h2>\n<p><a href=\"http:\/\/www.visual-paradigm.com\">Visual Paradigm<\/a> \u306b\u306f\u3001<a href=\"https:\/\/www.visual-paradigm.com\/features\/database-design-with-erd-tools\/\">ER\u30e2\u30c7\u30ea\u30f3\u30b0<\/a> \u306e\u4f53\u9a13\u3092\u5411\u4e0a\u3055\u305b\u308b\u9ad8\u5ea6\u306a\u6a5f\u80fd\u304c\u6e80\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n<ul>\n<li><strong>\u30c7\u30fc\u30bf\u578b\u3068\u5236\u7d04<\/strong>\uff1a\u30c7\u30fc\u30bf\u578b\u3001\u4e3b\u30ad\u30fc\u3001\u5916\u90e8\u30ad\u30fc\u3001\u5236\u7d04\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3001\u7269\u7406ERD\u304c\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u5b9f\u88c5\u306b\u9069\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong>SQL\u751f\u6210<\/strong>\uff1a\u7269\u7406ERD\u304b\u3089\u81ea\u52d5\u7684\u306bSQL\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u751f\u6210\u3057\u3001\u9078\u629e\u3057\u305fDBMS\u3067\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b9\u30ad\u30fc\u30de\u306e\u4f5c\u6210\u3092\u5bb9\u6613\u306b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u8a2d\u8a08\u30c8\u30ec\u30fc\u30b5\u30d3\u30ea\u30c6\u30a3<\/strong>\uff1a\u8a2d\u8a08\u8981\u7d20\u306e\u5143\u3092\u8ffd\u8de1\u3067\u304d\u3001\u65b0\u898f\u30e1\u30f3\u30d0\u30fc\u304c\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u57fa\u76e4\u3092\u7406\u89e3\u3067\u304d\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u958b\u767a\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u5168\u4f53\u306b\u308f\u305f\u308a\u8a2d\u8a08\u306e\u6574\u5408\u6027\u3092\u78ba\u4fdd\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u5354\u50cd\u3068\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u5316<\/h2>\n<p>\u52b9\u679c\u7684\u306a\u5354\u50cd\u306f\u3001\u6210\u529f\u3057\u305f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u3067\u3059\u3002Visual Paradigm\u306f\u5354\u50cd\u4f5c\u696d\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001\u8907\u6570\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u540c\u6642\u306b\u540c\u3058\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u53d6\u308a\u7d44\u3081\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u8907\u6570\u306e\u30b9\u30c6\u30fc\u30af\u30db\u30eb\u30c0\u30fc\u3092\u542b\u3080\u5927\u898f\u6a21\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3044\u3066\u7279\u306b\u4fa1\u5024\u304c\u3042\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u3053\u306e\u30c4\u30fc\u30eb\u306f\u5f37\u529b\u306a\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u6a5f\u80fd\u3092\u5099\u3048\u3066\u304a\u308a\u3001\u8a2d\u8a08\u610f\u601d\u6c7a\u5b9a\u3001\u5909\u66f4\u3001\u6839\u62e0\u306a\u3069\u3092\u8a73\u7d30\u306b\u8a18\u9332\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u7d71\u5408\u3068\u4e92\u63db\u6027<\/h2>\n<p>Visual Paradigm\u306f\u5e45\u5e83\u3044DBMS\u3068\u4e92\u63db\u6027\u304c\u3042\u308a\u3001\u7269\u7406ERD\u304c\u30bf\u30fc\u30b2\u30c3\u30c8\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b7\u30b9\u30c6\u30e0\u306e\u898f\u5247\u3084\u5236\u9650\u306b\u6e96\u62e0\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u3055\u307e\u3056\u307e\u306a\u5f62\u5f0f\u3067\u306e\u30e2\u30c7\u30eb\u306e\u30a4\u30f3\u30dd\u30fc\u30c8\u304a\u3088\u3073\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u306b\u5bfe\u5fdc\u3057\u3066\u304a\u308a\u3001\u958b\u767a\u74b0\u5883\u3067\u4f7f\u7528\u3057\u3066\u3044\u308b\u4ed6\u306e\u30c4\u30fc\u30eb\u3084\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u7d71\u5408\u304c\u5bb9\u6613\u3067\u3059\u3002<\/p>\n<h2>\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3068\u67d4\u8edf\u6027<\/h2>\n<p>\u3059\u3079\u3066\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u306f\u72ec\u81ea\u306e\u8981\u4ef6\u304c\u3042\u308a\u307e\u3059\u3002Visual Paradigm\u306f\u3001\u3053\u308c\u3089\u306e\u8981\u4ef6\u306b\u5408\u308f\u305b\u3066ER\u56f3\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u308b\u67d4\u8edf\u6027\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u53ef\u80fd\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3068\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3001\u5c5e\u6027\u3001\u95a2\u4fc2\u306e\u8ffd\u52a0\u30fb\u5909\u66f4\u30fb\u524a\u9664\u304c\u53ef\u80fd\u306a\u6a5f\u80fd\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u304c\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u8981\u4ef6\u306b\u5408\u308f\u305b\u3066\u9032\u5316\u3057\u307e\u3059\u3002<\/p>\n<h2>\u5b66\u7fd2\u3068\u30b5\u30dd\u30fc\u30c8<\/h2>\n<p>Visual Paradigm \u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u8fc5\u901f\u306b\u7fd2\u5f97\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u5e83\u7bc4\u306a\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3068\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30c4\u30fc\u30eb\u306b\u306f\u512a\u308c\u305f\u30ab\u30b9\u30bf\u30de\u30fc\u30b5\u30dd\u30fc\u30c8\u3082\u4ed8\u5c5e\u3057\u3066\u304a\u308a\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3044\u3064\u3067\u3082\u30b5\u30dd\u30fc\u30c8\u3084\u30ac\u30a4\u30c0\u30f3\u30b9\u3092\u53d7\u3051\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30b5\u30dd\u30fc\u30c8\u306f\u3001ER\u30e2\u30c7\u30ea\u30f3\u30b0\u306e\u5229\u70b9\u3092\u6700\u5927\u9650\u306b\u5f15\u304d\u51fa\u3057\u3001\u6210\u529f\u88cf\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u5b9f\u88c5\u3092\u9054\u6210\u3057\u3088\u3046\u3068\u3059\u308b\u30c1\u30fc\u30e0\u306b\u3068\u3063\u3066\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u306e\u4e3b\u306a\u76ee\u7684\u306f\u3001\u6a5f\u80fd\u30c1\u30fc\u30e0\u304c\u63d0\u4f9b\u3059\u308b\u30c7\u30fc\u30bf\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u6b63\u78ba\u306b\u8868\u73fe\u3055\u308c\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u901a\u5e38\u3001\u6982\u5ff5\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u304b\u3089\u59cb\u307e\u308a\u3001\u60c5\u5831\u304c\u5897\u3048\u308b\u306b\u3064\u308c\u3066\u8ad6\u7406\u30e2\u30c7\u30eb\u3078\u3068\u6d17\u7df4\u3055\u308c\u3066\u3044\u304d\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u5b9f\u88c5\u306e\u8a73\u7d30\u304c\u660e\u3089\u304b\u306b\u306a\u3063\u305f\u6642\u70b9\u3067\u3001\u8ad6\u7406\u30e2\u30c7\u30eb\u306f\u7269\u7406\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306b\u6d17\u7df4\u3055\u308c\u3001\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b7\u30b9\u30c6\u30e0\u306b\u76f4\u63a5\u30de\u30c3\u30d4\u30f3\u30b0\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u6982\u5ff5\u7684\u3001\u8ad6\u7406\u7684\u3001\u7269\u7406\u7684\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u3092\u7406\u89e3\u3057\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a2\u30ca\u30ea\u30b9\u30c8\u3084\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u8005\u306f\u3001\u7d44\u7e54\u306e\u30d3\u30b8\u30cd\u30b9\u8981\u4ef6\u3092\u6e80\u305f\u3059\u5805\u7262\u3067\u52b9\u7387\u7684\u304b\u3064\u5b9f\u88c5\u53ef\u80fd\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><a href=\"http:\/\/visaul-paradigm.com\">Visual Paradigm<\/a> \u306f\u7406\u60f3\u7684\u306a <a href=\"https:\/\/www.visual-paradigm.com\/tutorials\/how-to-model-relational-database-with-erd.jsp\">ER\u30e2\u30c7\u30ea\u30f3\u30b0\u30c4\u30fc\u30eb<\/a> \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u30c1\u30fc\u30e0\u5411\u3051\u306b\u3001\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u30d7\u30ed\u30bb\u30b9\u3092\u30b9\u30e0\u30fc\u30ba\u306b\u3059\u308b\u5305\u62ec\u7684\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u4f7f\u3044\u3084\u3059\u3044\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3084\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3001\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u6a5f\u80fd\u3001\u3055\u307e\u3056\u307e\u306aDBMS\u3068\u306e\u7d71\u5408\u6a5f\u80fd\u3092\u5099\u3048\u3066\u304a\u308a\u3001Visual Paradigm \u306f\u5805\u7262\u3067\u52b9\u7387\u7684\u304b\u3064\u5b9f\u88c5\u53ef\u80fd\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u3059\u3079\u3066\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<a href=\"http:\/\/visual-paradigm.com\">Visual Paradigm<\/a>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u30c1\u30fc\u30e0\u306f\u3001\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u304c\u30d3\u30b8\u30cd\u30b9\u8981\u4ef6\u3092\u6b63\u78ba\u306b\u53cd\u6620\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6210\u529f\u88cf\u306a\u5b9f\u88c5\u3092\u652f\u63f4\u3067\u304d\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u306f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b7\u30b9\u30c6\u30e0<\/p>\n","protected":false},"author":1,"featured_media":9671,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[5,3],"tags":[],"class_list":["post-9670","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-software-engineering","category-unified-modeling-language"],"yoast_head":"<!-- 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