{"id":11138,"date":"2026-04-15T16:49:26","date_gmt":"2026-04-15T08:49:26","guid":{"rendered":"https:\/\/www.archimetric.com\/ja\/learn-erd-modeling-by-doing-5-real-world-examples-that-taught-me-database-design\/"},"modified":"2026-04-15T16:49:26","modified_gmt":"2026-04-15T08:49:26","slug":"learn-erd-modeling-by-doing-5-real-world-examples-that-taught-me-database-design","status":"publish","type":"post","link":"https:\/\/www.archimetric.com\/ja\/learn-erd-modeling-by-doing-5-real-world-examples-that-taught-me-database-design\/","title":{"rendered":"\u5b9f\u8df5\u3067ERD\u30e2\u30c7\u30ea\u30f3\u30b0\u3092\u5b66\u3076\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u3092\u6559\u3048\u3066\u304f\u308c\u305f5\u3064\u306e\u5b9f\u4e16\u754c\u306e\u4f8b"},"content":{"rendered":"<h2>\u65b0\u898f\u7d39\u4ecb\uff1a\u306a\u305c\u4f8b\u304c\u7406\u8ad6\u3092\u5e38\u306b\u4e0a\u56de\u308b\u306e\u304b<\/h2>\n<p>\u521d\u3081\u3066\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3\u306e\u4f5c\u6210\u3092\u5b66\u307c\u3046\u3068\u3057\u305f\u3068\u304d\u3001\u57fa\u6570\u3001\u6b63\u898f\u5316\u3001\u30c1\u30a7\u30f3\u8a18\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3059\u308b\u6559\u79d1\u66f8\u306b\u6eba\u308c\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002\u5b9f\u969b\u306b\u5b9f\u4e16\u754c\u306e\u4f8b\u3092\u9006\u5f15\u304d\u3057\u3066\u307f\u305f\u3068\u304d\u3001\u3059\u3079\u3066\u304c\u7406\u89e3\u3067\u304d\u305f\u306e\u3067\u3059\u3002\u6bce\u65e5\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30c1\u30fc\u30e0\u3068\u5354\u50cd\u3059\u308b\u30d7\u30ed\u30c0\u30af\u30c8\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3068\u3057\u3066\u3001\u4ee5\u6765\u79c1\u306f\u300c\u4f8b\u304b\u3089\u5b66\u3076\u300d\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u63a1\u7528\u3057\u3066\u304a\u308a\u3001\u30c7\u30fc\u30bf\u30e2\u30c7\u30eb\u306e\u30d7\u30ed\u30c8\u30bf\u30a4\u30d4\u30f3\u30b0\u306e\u4ed5\u65b9\u304c\u307e\u3063\u305f\u304f\u5909\u308f\u3063\u305f\u306e\u3067\u3059\u3002<\/p>\n<p class=\"\">\u3053\u306e\u5b9f\u8df5\u7684\u306a\u30ac\u30a4\u30c9\u3067\u306f\u3001Visual Paradigm\u306e\u30aa\u30f3\u30e9\u30a4\u30f3ERD\u30c4\u30fc\u30eb\u304b\u3089\u614e\u91cd\u306b\u9078\u3093\u30605\u3064\u306eERD\u4f8b\u3092\u9806\u306b\u7d39\u4ecb\u3057\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066\u3001\u79c1\u304c\u5b66\u3093\u3060\u3053\u3068\u3001\u305d\u306e\u4f8b\u304c\u793a\u3059\u91cd\u8981\u306a\u30b3\u30f3\u30bb\u30d7\u30c8\u3001\u305d\u3057\u3066\u3059\u3050\u306b\u5b9f\u8df5\u3067\u304d\u308b\u5b9f\u7528\u7684\u306a\u30d2\u30f3\u30c8\u3092\u304a\u4f1d\u3048\u3057\u307e\u3059\u3002\u5c02\u9580\u7528\u8a9e\u306e\u904e\u5270\u306a\u6295\u5165\u306f\u4e00\u5207\u3042\u308a\u307e\u305b\u3093\u3002\u5b9f\u969b\u306e\u30d1\u30bf\u30fc\u30f3\u3001\u5b9f\u969b\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3001\u305d\u3057\u3066\u5b9f\u969b\u306e\u6210\u679c\u3060\u3051\u3067\u3059\u3002<\/p>\n<p class=\"\"><img alt=\"Online ERD Tool\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/images\/features\/erd-tool\/01-online-erd-tool.png\"\/><\/p>\n<h2>\u7c21\u5358\u306a\u6982\u8aac\uff1a\u5b9f\u969b\u306b\u5fc5\u8981\u306a4\u3064\u306eERD\u30b3\u30f3\u30bb\u30d7\u30c8<\/h2>\n<p>\u672c\u683c\u7684\u306b\u59cb\u3081\u308b\u524d\u306b\u3001\u3053\u308c\u3089\u306e\u4f8b\u304c\u5f37\u5316\u3059\u308b\u57fa\u76e4\u3068\u306a\u308b\u30b3\u30f3\u30bb\u30d7\u30c8\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\uff1a<\/p>\n<p>\ud83d\udd39\u00a0<strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3<\/strong>\uff1a\u30b7\u30b9\u30c6\u30e0\u306e\u300c\u540d\u8a5e\u300d\uff08\u4f8b\uff1a<code data-backticks=\"1\">\u9867\u5ba2<\/code>,\u00a0<code data-backticks=\"1\">\u6ce8\u6587<\/code>,\u00a0<code data-backticks=\"1\">\u88fd\u54c1<\/code>)<br \/>\n\ud83d\udd39\u00a0<strong>\u5c5e\u6027<\/strong>\uff1a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u8aac\u660e\u3059\u308b\u6027\u8cea\uff08\u4f8b\uff1a<code data-backticks=\"1\">\u9867\u5ba2.\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9<\/code>,\u00a0<code data-backticks=\"1\">\u6ce8\u6587.\u65e5\u4ed8<\/code>)<br \/>\n\ud83d\udd39\u00a0<strong>\u95a2\u4fc2<\/strong>\uff1a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u304c\u3069\u306e\u3088\u3046\u306b\u3064\u306a\u304c\u308b\u304b\uff08\u4f8b\uff1a<code data-backticks=\"1\">\u9867\u5ba2\u304c\u6ce8\u6587\u3092\u51fa\u3059<\/code>)<br \/>\n\ud83d\udd39\u00a0<strong>\u57fa\u6570<\/strong>\uff1a\u300c\u3044\u304f\u3064\u300d\u306e\u30eb\u30fc\u30eb\uff081\u5bfe1\u30011\u5bfe\u591a\u3001\u591a\u5bfe\u591a\uff09<\/p>\n<p>\u308f\u304b\u308a\u307e\u3057\u305f\u304b\uff1f\u7d20\u6674\u3089\u3057\u3044\u3002\u5b9f\u969b\u306b\u4f5c\u308b\u3053\u3068\u3067\u5b66\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n<hr\/>\n<h2>\u4f8b1\uff1a\u30b7\u30f3\u30d7\u30eb\u306a\u5b66\u6821\u3068\u751f\u5f92\u306eERD\uff08\u521d\u5fc3\u8005\u5411\u3051\u306b\u6700\u9069\uff09<\/h2>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/entity-relationship-diagram\/simple-school-and-student-erd\" title=\"Simple School and Student ERD\"><img alt=\"Simple School and Student ERD (ER Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/aae8b55e-a1c7-4462-9ca8-07020f00ba04.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=ERDiagram&amp;gallery=\/repository\/aae8b55e-a1c7-4462-9ca8-07020f00ba04.xml&amp;name=Simple%20School%20and%20Student%20ERD\">\u30b7\u30f3\u30d7\u30eb\u306a\u5b66\u6821\u3068\u751f\u5f92\u306eERD<\/a><\/p>\n<h3>\u3053\u306e\u4f8b\u304c\u6559\u3048\u308b\u3053\u3068<\/h3>\n<ul>\n<li>\n<p>\u57fa\u672c\u7684\u306a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u5b9a\u7fa9\uff08<code data-backticks=\"1\">\u751f\u5f92<\/code>,\u00a0<code data-backticks=\"1\">\u5b66\u6821<\/code>,\u00a0<code data-backticks=\"1\">\u6388\u696d<\/code>)<\/p>\n<\/li>\n<li>\n<p>1\u5bfe\u591a\u306e\u95a2\u4fc2\uff081\u3064\u306e\u5b66\u6821\u306b\u591a\u304f\u306e\u751f\u5f92\u304c\u6240\u5c5e\uff09<\/p>\n<\/li>\n<li>\n<p>\u4e3b\u30ad\u30fc\u306e\u8b58\u5225\uff08<code data-backticks=\"1\">\u751f\u5f92ID<\/code>)<\/p>\n<\/li>\n<\/ul>\n<h3>\u79c1\u306e\u300c\u306a\u308b\u307b\u3069\uff01\u300d\u306e\u77ac\u9593<\/h3>\n<p>\u3053\u306e\u4f8b\u304c\u5c5e\u6027\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3066\u3044\u308b\u70b9\u304c\u597d\u304d\u3067\u3057\u305f\u3002\u521d\u5fc3\u8005\u306e\u9803\u3001\u79c1\u306f\u3059\u3079\u3066\u306e\u53ef\u80fd\u306a\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u8a70\u3081\u8fbc\u3093\u3067\u3044\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u6b21\u306e\u3088\u3046\u306b\u5b66\u3073\u307e\u3057\u305f\uff1a<strong>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u4e00\u610f\u306b\u8b58\u5225\u3057\u3001\u63a5\u7d9a\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u3082\u306e\u304b\u3089\u59cb\u3081\u308b\u3053\u3068<\/strong>\u5f8c\u304b\u3089\u5c5e\u6027\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u306f\u3044\u3064\u3067\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<h3>\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u306e\u30d7\u30ed\u30c6\u30af<\/h3>\n<p>\u2705 \u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u540d\u306f\u5358\u6570\u3092\u4f7f\u7528\u3059\u308b\uff08<code data-backticks=\"1\">\u751f\u5f92<\/code>\u3067\u306f\u306a\u304f<code data-backticks=\"1\">\u751f\u5f92\u305f\u3061<\/code>\uff09\u4e00\u8cab\u6027\u3092\u6301\u305f\u305b\u308b\u305f\u3081\u306b<br \/>\n\u2705 \u5404\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u30dc\u30c3\u30af\u30b9\u306e\u4e0a\u90e8\u306b\u4e3b\u30ad\u30fc\u3092\u914d\u7f6e\u3057\u3066\u3001\u3059\u3070\u3084\u304f\u30b9\u30ad\u30e3\u30f3\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b<br \/>\n\u2705 \u95a2\u4fc2\u7dda\u306b\u660e\u78ba\u306a\u30e9\u30d9\u30eb\u3092\u4ed8\u3051\u308b\uff08\u300c\u767b\u9332\u3059\u308b\u300d\u3001\u300c\u6240\u5c5e\u3059\u308b\u300d\uff09\u3053\u3068\u3067\u66d6\u6627\u3055\u3092\u907f\u3051\u308b<\/p>\n<hr\/>\n<h2>\u4f8b2\uff1aERD\u306e\u4f8b \u2013 ATM\uff08\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30ca\u30eb\u30e2\u30c7\u30eb\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\uff09<\/h2>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/entity-relationship-diagram\/erd-example-atm\" title=\"ERD Example - ATM\"><img alt=\"ERD Example - ATM (ER Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/7eb24322-267a-4239-8e0c-b8339b1cd46e.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=ERDiagram&amp;gallery=\/repository\/7eb24322-267a-4239-8e0c-b8339b1cd46e.xml&amp;name=ERD%20Example%20-%20ATM\">ERD\u306e\u4f8b \u2013 ATM<\/a><\/p>\n<h3>\u3053\u306e\u4f8b\u304c\u6559\u3048\u308b\u3053\u3068<\/h3>\n<ul>\n<li>\n<p>\u6642\u9593\u306b\u4f9d\u5b58\u3059\u308b\u53d6\u5f15\u3092\u30e2\u30c7\u30eb\u5316\u3059\u308b\uff08<code data-backticks=\"1\">\u53d6\u5f15<\/code>\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u4ed8\u304d\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff09<\/p>\n<\/li>\n<li>\n<p>\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u95a2\u4fc2\u3092\u6271\u3046\uff08\u30ab\u30fc\u30c9\u306b\u306f\u307e\u3060\u53d6\u5f15\u304c\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308b\uff09<\/p>\n<\/li>\n<li>\n<p>\u8a8d\u8a3c\u3092\u5206\u96e2\u3059\u308b\uff08<code data-backticks=\"1\">\u30ab\u30fc\u30c9<\/code>,\u00a0<code data-backticks=\"1\">PIN<\/code>\uff09\u3092\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\uff08<code data-backticks=\"1\">\u53e3\u5ea7<\/code>,\u00a0<code data-backticks=\"1\">\u53d6\u5f15<\/code>)<\/p>\n<\/li>\n<\/ul>\n<h3>\u79c1\u306e\u300c\u3042\u3042\u3001\u306a\u308b\u307b\u3069\uff01\u300d\u306e\u77ac\u9593<\/h3>\n<p>\u3053\u306e\u4f8b\u306f\u3001\u3069\u306e\u3088\u3046\u306b\u30e2\u30c7\u30eb\u5316\u3059\u308b\u304b\u3092\u6559\u3048\u3066\u304f\u308c\u305f<strong>\u6642\u9593\u306e\u7d4c\u904e\u306b\u4f34\u3046\u72b6\u614b\u306e\u5909\u5316<\/strong>\u3002\u5358\u306b\u6b8b\u9ad8\u3092\u4fdd\u5b58\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001<code data-backticks=\"1\">\u53d6\u5f15<\/code>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u304c\u3059\u3079\u3066\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u8a18\u9332\u3059\u308b\u3002\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u306f\u76e3\u67fb\u30ed\u30b0\u3001\u30ec\u30dd\u30fc\u30c8\u4f5c\u6210\u3001\u30c7\u30d0\u30c3\u30b0\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u4fa1\u5024\u304c\u3042\u308b\u3002<\/p>\n<h3>\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u306e\u30d7\u30ed\u30c6\u30af<\/h3>\n<p>\u2705 \u5fc5\u305a<code data-backticks=\"1\">\u4f5c\u6210\u65e5\u6642<\/code>\/<code data-backticks=\"1\">\u66f4\u65b0\u65e5\u6642<\/code>\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u542b\u3081\u308b<br \/>\n\u2705 \u72ec\u7acb\u3057\u3066\u5b58\u5728\u3067\u304d\u306a\u3044\u30a2\u30a4\u30c6\u30e0\uff08\u4f8b\uff1a<code data-backticks=\"1\">\u53d6\u5f15\u660e\u7d30<\/code>)<br \/>\n\u2705 \u95a2\u4fc2\u7dda\u306b\u76f4\u63a5\u57fa\u6570\u3092\u8a18\u9332\u3059\u308b\uff1a<code data-backticks=\"1\">1..*<\/code>\u306f\u300c1\u3064\u4ee5\u4e0a\u300d\u3092\u610f\u5473\u3059\u308b<\/p>\n<hr\/>\n<h2>\u4f8b3\uff1a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3\uff1a\u30aa\u30f3\u30e9\u30a4\u30f3\u66f8\u5e97\uff08\u96fb\u5b50\u5546\u53d6\u5f15\u30d1\u30bf\u30fc\u30f3\uff09<\/h2>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/entity-relationship-diagram\/entity-relationship-diagram-online-bookstore\" title=\"Entity Relationship Diagram: Online Bookstore\"><img alt=\"Entity Relationship Diagram: Online Bookstore (ER Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/3e0bd6b5-3c97-473e-a842-e68910b01dea.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=ERDiagram&amp;gallery=\/repository\/3e0bd6b5-3c97-473e-a842-e68910b01dea.xml&amp;name=Entity%20Relationship%20Diagram:%20Online%20Bookstore\">\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3\uff1a\u30aa\u30f3\u30e9\u30a4\u30f3\u66f8\u5e97<\/a><\/p>\n<h3>\u3053\u306e\u4f8b\u304c\u6559\u3048\u308b\u3053\u3068<\/h3>\n<ul>\n<li>\n<p>\u591a\u6570\u5bfe\u591a\u6570\u306e\u95a2\u4fc2\u304c\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u3067\u89e3\u6c7a\u3055\u308c\u308b\uff08<code data-backticks=\"1\">\u6ce8\u6587\u9805\u76ee<\/code>\u306f\u2026\u3092\u63a5\u7d9a\u3059\u308b<code data-backticks=\"1\">\u6ce8\u6587<\/code>\u3068<code data-backticks=\"1\">\u66f8\u7c4d<\/code>)<\/p>\n<\/li>\n<li>\n<p>\u968e\u5c64\u7684\u306a\u30ab\u30c6\u30b4\u30ea\uff08<code data-backticks=\"1\">\u30ab\u30c6\u30b4\u30ea<\/code>\u81ea\u5df1\u53c2\u7167\u95a2\u4fc2\u3092\u6301\u3064\uff09<\/p>\n<\/li>\n<li>\n<p>\u30e6\u30fc\u30b6\u30fc\u751f\u6210\u30b3\u30f3\u30c6\u30f3\u30c4\u30d1\u30bf\u30fc\u30f3\uff08<code data-backticks=\"1\">\u30ec\u30d3\u30e5\u30fc<\/code>,\u00a0<code data-backticks=\"1\">\u8a55\u4fa1<\/code>\u306f\u4e21\u65b9\u3068\u30ea\u30f3\u30af\u3055\u308c\u3066\u3044\u308b<code data-backticks=\"1\">\u30e6\u30fc\u30b6\u30fc<\/code>\u3068<code data-backticks=\"1\">\u66f8\u7c4d<\/code>)<\/p>\n<\/li>\n<\/ul>\n<h3>\u79c1\u306e\u300c\u306a\u308b\u307b\u3069\uff01\u300d\u306e\u77ac\u9593<\/h3>\n<p>\u305d\u306e<code data-backticks=\"1\">\u6ce8\u6587\u9805\u76ee<\/code>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u885d\u6483\u7684\u3067\u3057\u305f\u3002\u4ee5\u524d\u306f\u2026\u3092\u76f4\u63a5\u63a5\u7d9a\u3057\u3088\u3046\u3068\u8a66\u307f\u3066\u3044\u307e\u3057\u305f<code data-backticks=\"1\">\u6ce8\u6587<\/code>\u3092\u76f4\u63a5\u2026\u306b\u63a5\u7d9a\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u307e\u3057\u305f<code data-backticks=\"1\">\u66f8\u7c4d<\/code>\u591a\u304f\u306e\u5bfe\u591a\u6570\u306e\u7dda\u3092\u4f34\u3044\u307e\u3059\u304c\u3001\u3053\u306e\u4f8b\u306f\u306a\u305c\u305d\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u5fc5\u8981\u304b\u3092\u793a\u3057\u3066\u3044\u307e\u3059<strong>\u7d50\u5408\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3<\/strong>\u306f\u5fc5\u9808\u3067\u3059\u3002\u6ce8\u6587\u6570\u91cf\u3001\u8cfc\u5165\u6642\u306e\u4fa1\u683c\u3001\u305d\u306e\u4ed6\u306e\u6ce8\u6587\u56fa\u6709\u306e\u8a73\u7d30\u3092\u4fdd\u5b58\u3067\u304d\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n<h3>\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u306e\u30d7\u30ed\u30c6\u30af<\/h3>\n<p>\u2705 \u7d50\u5408\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u540d\u524d\u3092\u660e\u78ba\u306b\uff08<code data-backticks=\"1\">OrderItem<\/code>\u3001\u3067\u306f\u306a\u304f<code data-backticks=\"1\">OrderBook<\/code>\uff09\u3068\u76ee\u7684\u3092\u53cd\u6620\u3055\u305b\u308b<br \/>\n\u2705 \u6b74\u53f2\u7684\u5024\uff08\u4f8b\uff1a<code data-backticks=\"1\">unit_price<\/code>\uff09\u3092\u7d50\u5408\u30c6\u30fc\u30d6\u30eb\u306b\u4fdd\u5b58\u3059\u308b\u2014\u2014\u73fe\u5728\u306e\u88fd\u54c1\u30c7\u30fc\u30bf\u306b\u983c\u3063\u3066\u306f\u3044\u3051\u307e\u305b\u3093<br \/>\n\u2705 \u518d\u5e30\u7684\u95a2\u4fc2\u306f\u63a7\u3048\u3081\u306b\u4f7f\u7528\u3059\u308b\u3002\u968e\u5c64\u306e\u6df1\u3055\u5236\u9650\u3092\u30e1\u30e2\u306b\u8a18\u9332\u3059\u308b<\/p>\n<hr\/>\n<h2>\u4f8b4\uff1aERD\u4f8b\uff1a\u75c5\u9662\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\uff08\u8907\u96d1\u306a\u73fe\u5b9f\u4e16\u754c\u30e2\u30c7\u30ea\u30f3\u30b0\uff09<\/h2>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/entity-relationship-diagram\/erd-example-hospital-management-system\" title=\"ERD Example: Hospital Management System\"><img alt=\"ERD Example: Hospital Management System (ER Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/a5f46368-38e9-4d47-9580-0c4d68c0a629.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=ERDiagram&amp;gallery=\/repository\/a5f46368-38e9-4d47-9580-0c4d68c0a629.xml&amp;name=ERD%20Example:%20Hospital%20Management%20System\">ERD\u4f8b\uff1a\u75c5\u9662\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0<\/a><\/p>\n<h3>\u3053\u306e\u4f8b\u304c\u6559\u3048\u308b\u3053\u3068<\/h3>\n<ul>\n<li>\n<p>\u8907\u96d1\u306a\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306e\u30e2\u30c7\u30ea\u30f3\u30b0\uff08<code data-backticks=\"1\">Appointment<\/code>\u00a0\u2192\u00a0<code data-backticks=\"1\">Diagnosis<\/code>\u00a0\u2192\u00a0<code data-backticks=\"1\">Treatment<\/code>\u00a0\u2192\u00a0<code data-backticks=\"1\">Billing<\/code>)<\/p>\n<\/li>\n<li>\n<p>\u5f79\u5272\u30d9\u30fc\u30b9\u306e\u95a2\u4fc2\u306e\u51e6\u7406\uff08<code data-backticks=\"1\">Staff<\/code>\u3068\u3057\u3066<code data-backticks=\"1\">Doctor<\/code>,\u00a0<code data-backticks=\"1\">\u770b\u8b77\u5e2b<\/code>\u3001\u307e\u305f\u306f<code data-backticks=\"1\">\u7ba1\u7406\u8005<\/code>)<\/p>\n<\/li>\n<li>\n<p>\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u914d\u616e\u3057\u305f\u8a2d\u8a08\uff08\u5206\u96e2\u3057\u3066\uff09<code data-backticks=\"1\">\u60a3\u8005<\/code>\u00a0\u4eba\u53e3\u7d71\u8a08\u30c7\u30fc\u30bf\u3092\u00a0<code data-backticks=\"1\">\u533b\u7642\u8a18\u9332<\/code>)<\/p>\n<\/li>\n<\/ul>\n<h3>\u79c1\u306e\u300c\u3042\u3042\u3001\u306a\u308b\u307b\u3069\uff01\u300d\u306e\u77ac\u9593<\/h3>\n<p>\u3053\u306e\u4f8b\u304b\u3089\u5b66\u3093\u3060\u3053\u3068\u306f<strong>\u30e2\u30b8\u30e5\u30fc\u30eb\u5316\u30e2\u30c7\u30ea\u30f3\u30b0<\/strong>\u3002\u5de8\u5927\u306a\u4e00\u3064\u306e\u3082\u306e\u3067\u306f\u306a\u304f\u3001<code data-backticks=\"1\">\u60a3\u8005<\/code>\u00a050\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u6301\u3064\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3067\u306f\u306a\u304f\u3001\u95a2\u9023\u3059\u308b\u61f8\u5ff5\u4e8b\u9805\u304c\u5206\u5272\u3055\u308c\u308b<code data-backticks=\"1\">\u60a3\u8005<\/code>,\u00a0<code data-backticks=\"1\">\u533b\u7642\u8a18\u9332<\/code>,\u00a0<code data-backticks=\"1\">\u4fdd\u967a<\/code>\u3001\u304a\u3088\u3073<code data-backticks=\"1\">\u7dca\u6025\u9023\u7d61\u5148<\/code>\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u56f3\u306f\u8aad\u307f\u3084\u3059\u304f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u4fdd\u5b88\u3082\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u306e\u30d7\u30ed\u30c6\u30af<\/h3>\n<p>\u2705 \u8272\u5206\u3051\u3084\u30b0\u30eb\u30fc\u30d7\u30dc\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u95a2\u9023\u3059\u308b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u8996\u899a\u7684\u306b\u307e\u3068\u3081\u308b\uff08\u4f8b\uff1a\u3059\u3079\u3066\u306e\u8acb\u6c42\u95a2\u9023\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff09<br \/>\n\u2705 \u56f3\u5f62\u7684\u306b\u8868\u73fe\u3067\u304d\u306a\u3044\u30d3\u30b8\u30cd\u30b9\u30eb\u30fc\u30eb\u306e\u30e1\u30e2\u3092\u8ffd\u52a0\u3059\u308b\uff08\u300c\u60a3\u8005\u306f1\u4eba\u306e\u4e3b\u8981\u306a\u533b\u5e2b\u3092\u6301\u305f\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u300d\u306a\u3069\uff09<br \/>\n\u2705 \u30aa\u30fc\u30c7\u30a3\u30c3\u30c8\u8981\u4ef6\u3092\u65e9\u671f\u306b\u30e2\u30c7\u30eb\u5316\u3059\u308b\uff1a\u8ab0\u304c\u8a18\u9332\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u304b\u3001\u3044\u3064\u3001\u306a\u305c<\/p>\n<hr\/>\n<h2>\u4f8b5\uff1aER\u30e2\u30c7\u30eb\uff1a\u5b66\u751f\u306e\u6210\u7e3e\uff0d3\u9805\u95a2\u4fc2\uff08\u4e0a\u7d1a\u6982\u5ff5\uff09<\/h2>\n<p><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/entity-relationship-diagram\/er-model-student-score-ternary-relationship\" title=\"ER Model: Student Score - Ternary Relationship\"><img alt=\"ER Model: Student Score - Ternary Relationship (ER Diagram Example)\" decoding=\"async\" src=\"https:\/\/online.visual-paradigm.com\/repository\/images\/8c19cb11-48a3-4ebf-a914-08efc3484567.png\"\/><\/a><br \/>\n<a href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=ERDiagram&amp;gallery=\/repository\/8c19cb11-48a3-4ebf-a914-08efc3484567.xml&amp;name=ER%20Model:%20Student%20Score%20-%20Ternary%20Relationship\">ER\u30e2\u30c7\u30eb\uff1a\u5b66\u751f\u306e\u6210\u7e3e\uff0d3\u9805\u95a2\u4fc2<\/a><\/p>\n<h3>\u3053\u306e\u4f8b\u304c\u6559\u3048\u308b\u3053\u3068<\/h3>\n<ul>\n<li>\n<p>3\u9805\u95a2\u4fc2: 3\u3064\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u304c\u610f\u5473\u7684\u306b\u4ea4\u5dee\u3059\u308b\u5834\u5408\uff08<code data-backticks=\"1\">\u5b66\u751f<\/code>\u00a0+\u00a0<code data-backticks=\"1\">\u6388\u696d<\/code>\u00a0+\u00a0<code data-backticks=\"1\">\u5b66\u671f<\/code>\u00a0\u2192\u00a0<code data-backticks=\"1\">\u6210\u7e3e<\/code>)<\/p>\n<\/li>\n<li>\n<p>3\u9805\u95a2\u4fc2\u3092\u660e\u78ba\u5316\u3059\u308b\u305f\u3081\u306b\u3001\u95a2\u9023\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u7f6e\u304d\u63db\u3048\u308b\u30bf\u30a4\u30df\u30f3\u30b0<\/p>\n<\/li>\n<li>\n<p>\u6642\u9593\u5236\u9650\u4ed8\u304d\u306e\u95a2\u4fc2\u306e\u30e2\u30c7\u30ea\u30f3\u30b0\uff08\u5b66\u751f\u306e\u6388\u696d\u6210\u7e3e\u306f\u5b66\u671f\u306b\u4f9d\u5b58\u3059\u308b\uff09<\/p>\n<\/li>\n<\/ul>\n<h3>\u79c1\u306e\u300c\u3042\u3042\u3001\u306a\u308b\u307b\u3069\uff01\u300d\u306e\u77ac\u9593<\/h3>\n<p>\u79c1\u306f\u304b\u3064\u3066\u30013\u9805\u95a2\u4fc2\u3092\u8907\u6570\u306e2\u9805\u95a2\u4fc2\u306b\u7121\u7406\u3084\u308a\u62bc\u3057\u8fbc\u3082\u3046\u3068\u3057\u3001\u91cd\u8981\u306a\u6587\u8108\u3092\u5931\u3063\u3066\u3044\u305f\u3002\u3053\u306e\u4f8b\u304c\u793a\u3057\u305f\u306e\u306f\u3001<strong>\u3068\u304d\u306b\u306f\u30013\u8005\u9593\u306e\u95a2\u4fc2\u3053\u305d\u304c\u6700\u3082\u8aa0\u5b9f\u306a\u8868\u73fe\u3067\u3042\u308b\u3068\u3044\u3046\u3053\u3068<\/strong>\u3057\u304b\u3057\u591a\u304f\u306e\u5834\u5408\u3001\u305d\u308c\u3092\u95a2\u9023\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff08<code data-backticks=\"1\">\u767b\u9332<\/code>\uff09\u306b\u5909\u63db\u3057\u3001\u5c5e\u6027\uff08<code data-backticks=\"1\">\u6210\u7e3e<\/code>,\u00a0<code data-backticks=\"1\">\u51fa\u5e2d\u72b6\u6cc1<\/code>\uff09\u3092\u6301\u3064\u3053\u3068\u306f\u3001\u5b9f\u88c5\u306b\u304a\u3044\u3066\u3088\u308a\u5b9f\u7528\u7684\u3067\u3042\u308b\u3068\u3044\u3046\u3053\u3068<\/p>\n<h3>\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u306e\u30d7\u30ed\u30c6\u30af<\/h3>\n<p>\u2705 \u8cea\u554f\u3059\u308b\uff1a\u300c\u3053\u306e\u95a2\u4fc2\u306b\u72ec\u81ea\u306e\u5c5e\u6027\u3092\u6301\u305f\u305b\u3089\u308c\u308b\u304b\uff1f\u300d\u3082\u3057Yes\u306a\u3089\u3001\u95a2\u9023\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u4f7f\u7528\u3059\u308b<br \/>\n\u2705 \u56f3\u306e\u6ce8\u8a18\u306b\u30013\u9805\u95a2\u4fc2\u3092\u5fc5\u8981\u3068\u3059\u308b\u30d3\u30b8\u30cd\u30b9\u30eb\u30fc\u30eb\u3092\u8a18\u9332\u3059\u308b<br \/>\n\u2705 \u5b9f\u88c5\u3067\u306f\u3001\u95a2\u9023\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u901a\u5e38\u30013\u3064\u306e\u5916\u90e8\u30ad\u30fc\u3092\u6301\u3064\u30c6\u30fc\u30d6\u30eb\u306b\u306a\u308b<\/p>\n<hr\/>\n<h2>\u79c1\u304c\u82e6\u52b4\u3057\u3066\u5f97\u305fERD\u306e\u30c8\u30c3\u30d75\u306e\u30d2\u30f3\u30c8\u3068\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n<p>\u4f55\u5341\u3082\u306e\u4f8b\u3092\u7d4c\u3066\u3001\u3053\u308c\u3089\u306e\u7fd2\u6163\u304c\u6570\u6642\u9593\u306e\u6642\u9593\u3092\u7bc0\u7d04\u3057\u3066\u304f\u308c\u308b\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u6982\u5ff5\u304b\u3089\u59cb\u3081\u3001\u305d\u306e\u5f8c\u306b\u6d17\u7df4\u3059\u308b<\/strong><br \/>\n\u307e\u305a\u7d19\u306b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3068\u95a2\u4fc2\u3092\u30b9\u30b1\u30c3\u30c1\u3059\u308b\u3002\u69cb\u9020\u304c\u81ea\u7136\u306b\u611f\u3058\u3089\u308c\u308b\u307e\u3067\u3001\u5c5e\u6027\u306e\u8a73\u7d30\u306b\u3053\u3060\u308f\u3089\u306a\u3044\u3053\u3068\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u95a2\u4fc2\u306b\u306f\u52d5\u8a5e\u3068\u3057\u3066\u540d\u524d\u3092\u4ed8\u3051\u308b<\/strong><br \/>\n<code data-backticks=\"1\">\u9867\u5ba2\u304c\u6ce8\u6587\u3092\u3057\u307e\u3059<\/code>\u5358\u306a\u308b\u7dda\u3088\u308a\u3082\u660e\u78ba\u3067\u3059\u3002\u5c06\u6765\u306e\u3042\u306a\u305f\uff08\u304a\u3088\u3073\u30c1\u30fc\u30e0\u30e1\u30fc\u30c8\uff09\u304c\u611f\u8b1d\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u4f8b\u306e\u30ae\u30e3\u30e9\u30ea\u30fc\u3092\u30c1\u30fc\u30c8\u30b7\u30fc\u30c8\u3068\u3057\u3066\u6d3b\u7528\u3059\u308b<\/strong><br \/>\nVisual Paradigm\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u5358\u306a\u308b\u30a4\u30f3\u30b9\u30d4\u30ec\u30fc\u30b7\u30e7\u30f3\u6e90\u3067\u306f\u306a\u304f\u3001\u30d1\u30bf\u30fc\u30f3\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002\u985e\u4f3c\u3057\u305f\u4f8b\u3092\u30d5\u30a9\u30fc\u30af\u3057\u3066\u3001\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u73fe\u5b9f\u306e\u30b7\u30ca\u30ea\u30aa\u3092\u4f7f\u3063\u3066\u57fa\u6570\u3092\u691c\u8a3c\u3059\u308b<\/strong><br \/>\n\u5c0b\u306d\u3066\u307f\u307e\u3057\u3087\u3046\uff1a\u300c\u3053\u308c\u306f\u8d77\u3053\u308a\u5f97\u308b\u304b\uff1f\u300d\uff08\u4f8b\uff1a\u300c\u9867\u5ba2\u304c\u3044\u306a\u304f\u3066\u3082\u6ce8\u6587\u306f\u5b58\u5728\u3067\u304d\u308b\u304b\uff1f\u300d\u3082\u3057\u53ef\u80fd\u306a\u3089\u3001\u57fa\u6570\u3092\u8abf\u6574\u3059\u308b\uff09<\/p>\n<\/li>\n<li>\n<p><strong>\u300c\u51e1\u4f8b\u300d\u307e\u305f\u306f\u300c\u30e1\u30e2\u300d\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u8ffd\u52a0\u3059\u308b<\/strong><br \/>\n\u8907\u96d1\u306a\u56f3\u306e\u5834\u5408\u3001\u4eee\u5b9a\u3084\u30d3\u30b8\u30cd\u30b9\u30eb\u30fc\u30eb\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u60c5\u5831\u306a\u3069\u3092\u8aac\u660e\u3059\u308b\u30d5\u30ed\u30fc\u30c6\u30a3\u30f3\u30b0\u30ce\u30fc\u30c8\u30dc\u30c3\u30af\u30b9\u3092\u542b\u3081\u308b\u3002<\/p>\n<\/li>\n<\/ol>\n<p><img alt=\"\" decoding=\"async\" src=\"https:\/\/www.archimetric.com\/wp-content\/uploads\/2026\/04\/img_69df51175f0b3.\"\/><\/p>\n<h1>\u6982\u5ff5\u7684ER\u56f3<\/h1>\n<p>\u30c7\u30b6\u30a4\u30f3 by<a href=\"https:\/\/online.visual-paradigm.com\/community\/user\/gugu%20dev\">@Gugu Dev<\/a><\/p>\n<hr\/>\n<h2>\u65b0\u305f\u306a\u7d50\u8ad6\uff1a\u5b9f\u8df5\u3057\u3066\u5b66\u3076\u6642\u9593\u3067\u3059<\/h2>\n<p>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u306f\u6050\u308c\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5b9f\u969b\u306b\u5b58\u5728\u3059\u308b\u4f8b\uff08\u79c1\u305f\u3061\u304c\u63a2\u6c42\u3057\u305f5\u3064\u306e\u4f8b\u306a\u3069\uff09\u3092\u5b66\u3076\u3053\u3068\u3067\u3001\u6559\u79d1\u66f8\u3067\u306f\u4f1d\u3048\u304d\u308c\u306a\u3044\u30d1\u30bf\u30fc\u30f3\u3092\u5185\u9762\u5316\u3067\u304d\u307e\u3059\u3002\u307e\u305a\u306f\u30b7\u30f3\u30d7\u30eb\u306a\u5b66\u6821ER\u56f3\u304b\u3089\u59cb\u3081\u3001\u81ea\u4fe1\u3092\u3064\u3051\u3066\u304b\u3089\u3001\u75c5\u9662\u30b7\u30b9\u30c6\u30e0\u3084\u4e09\u9805\u95a2\u4fc2\u306e\u4f8b\u306e\u3088\u3046\u306a\u3088\u308a\u8907\u96d1\u306a\u30e2\u30c7\u30eb\u306b\u6bb5\u968e\u7684\u306b\u6311\u6226\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u79c1\u306e\u30a2\u30c9\u30d0\u30a4\u30b9\u306f\uff1f Visual Paradigm\u306e\u30aa\u30f3\u30e9\u30a4\u30f3ER\u56f3\u30c4\u30fc\u30eb\u3092\u958b\u304d\u3001\u3053\u308c\u3089\u306e\u4f8b\u306e\u4e00\u3064\u3092\u30d5\u30a9\u30fc\u30af\u3057\u3066\u3001\u4e00\u3064\u3060\u3051\u5909\u66f4\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u5c5e\u6027\u3092\u8ffd\u52a0\u3059\u308b\u3002\u95a2\u4fc2\u3092\u5909\u66f4\u3059\u308b\u3002\u58ca\u3057\u3066\u304b\u3089\u76f4\u3059\u3002\u305d\u306e\u5b9f\u8df5\u7684\u306a\u8a66\u884c\u932f\u8aa4\u3053\u305d\u304c\u3001\u771f\u306e\u7fd2\u5f97\u306b\u3064\u306a\u304c\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>\u6700\u9ad8\u306eER\u56f3\u30c7\u30b6\u30a4\u30ca\u30fc\u306f\u3001\u8a18\u6cd5\u3092\u6697\u8a18\u3059\u308b\u4eba\u3067\u306f\u306a\u304f\u3001\u5b9f\u969b\u306b\u591a\u304f\u306e\u30b7\u30b9\u30c6\u30e0\u3092\u9006\u8a2d\u8a08\u3057\u3066\u304d\u3066\u3001\u30d1\u30bf\u30fc\u30f3\u3092\u76f4\u611f\u7684\u306b\u8a8d\u8b58\u3067\u304d\u308b\u4eba\u3067\u3059\u3002\u3042\u306a\u305f\u306e\u65c5\u306f\u3001\u4e00\u3064\u306e\u4f8b\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002\u3069\u306e\u4f8b\u3092\u6700\u521d\u306b\u8a66\u3057\u3066\u307f\u307e\u3059\u304b\uff1f<\/p>\n<hr\/>\n<h2>\u53c2\u8003\u6587\u732e<\/h2>\n<ol>\n<li>\n<p><strong><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/erd-tool\/\">Visual Paradigm \u30aa\u30f3\u30e9\u30a4\u30f3ER\u56f3\u30c4\u30fc\u30eb<\/a><\/strong>: \u30c9\u30e9\u30c3\u30b0\u30a2\u30f3\u30c9\u30c9\u30ed\u30c3\u30d7\u306e\u7c21\u5358\u3055\u3067\u3001\u6982\u5ff5\u7684\u3001\u8ad6\u7406\u7684\u3001\u7269\u7406\u7684ER\u56f3\u3092\u4f5c\u6210\u3067\u304d\u308b\u5305\u62ec\u7684\u306a\u30aa\u30f3\u30e9\u30a4\u30f3\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3002<\/p>\n<\/li>\n<li>\n<p><strong><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/entity-relationship-diagram\/simple-school-and-student-erd\">\u30b7\u30f3\u30d7\u30eb\u306a\u5b66\u6821\u3068\u751f\u5f92\u306eER\u56f3<\/a><\/strong>: \u521d\u5fc3\u8005\u5411\u3051\u306e\u4f8b\u3067\u3001\u6559\u80b2\u73fe\u5834\u306b\u304a\u3051\u308b\u57fa\u672c\u7684\u306a\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3001\u5c5e\u6027\u30011\u5bfe\u591a\u306e\u95a2\u4fc2\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p><strong><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/entity-relationship-diagram\/erd-example-atm\">ER\u56f3\u306e\u4f8b \u2013 ATM<\/a><\/strong>: \u6642\u9593\u4f9d\u5b58\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u95a2\u4fc2\u3001\u8a8d\u8a3c\u30d1\u30bf\u30fc\u30f3\u3092\u793a\u3059\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30b7\u30b9\u30c6\u30e0\u30e2\u30c7\u30eb\u3002<\/p>\n<\/li>\n<li>\n<p><strong><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/entity-relationship-diagram\/entity-relationship-diagram-online-bookstore\">\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3\uff1a\u30aa\u30f3\u30e9\u30a4\u30f3\u66f8\u5e97<\/a><\/strong>: \u8ee2\u9001\u30c6\u30fc\u30d6\u30eb\u306b\u3088\u308b\u591a\u5bfe\u591a\u306e\u89e3\u6c7a\u3001\u968e\u5c64\u7684\u306a\u30ab\u30c6\u30b4\u30ea\u3001\u30e6\u30fc\u30b6\u30fc\u751f\u6210\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u30e2\u30c7\u30ea\u30f3\u30b0\u3092\u7279\u5fb4\u3068\u3059\u308bEC\u53c2\u8003\u4f8b\u3002<\/p>\n<\/li>\n<li>\n<p><strong><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/entity-relationship-diagram\/erd-example-hospital-management-system\">ER\u56f3\u306e\u4f8b\uff1a\u75c5\u9662\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0<\/a><\/strong>: \u5b9f\u969b\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306e\u8907\u96d1\u306a\u4f8b\u3067\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u8a2d\u8a08\u3001\u5f79\u5272\u30d9\u30fc\u30b9\u306e\u95a2\u4fc2\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u306b\u914d\u616e\u3057\u305f\u30c7\u30fc\u30bf\u5206\u96e2\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p class=\"\"><strong><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/entity-relationship-diagram\/er-model-student-score-ternary-relationship\">ER\u30e2\u30c7\u30eb\uff1a\u751f\u5f92\u306e\u6210\u7e3e \u2013 \u4e09\u9805\u95a2\u4fc2<\/a><\/strong>: \u4e09\u8005\u95a2\u4fc2\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u52b9\u679c\u7684\u306b\u8868\u73fe\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u3068\u65b9\u6cd5\u3092\u793a\u3059\u9ad8\u5ea6\u306a\u30e2\u30c7\u30ea\u30f3\u30b0\u4f8b\u3002<\/p>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u65b0\u898f\u7d39\u4ecb\uff1a\u306a\u305c\u4f8b\u304c\u7406\u8ad6\u3092\u5e38\u306b\u4e0a\u56de\u308b\u306e\u304b <\/p>\n","protected":false},"author":3482,"featured_media":11139,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","fifu_image_url":"https:\/\/online.visual-paradigm.com\/repository\/images\/3e0bd6b5-3c97-473e-a842-e68910b01dea.png","fifu_image_alt":"","footnotes":""},"categories":[149],"tags":[],"class_list":["post-11138","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-database-design"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u5b9f\u8df5\u3067ERD\u30e2\u30c7\u30ea\u30f3\u30b0\u3092\u5b66\u3076\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u3092\u6559\u3048\u3066\u304f\u308c\u305f5\u3064\u306e\u5b9f\u4e16\u754c\u306e\u4f8b - ArchiMetric Japanese<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.archimetric.com\/ja\/learn-erd-modeling-by-doing-5-real-world-examples-that-taught-me-database-design\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5b9f\u8df5\u3067ERD\u30e2\u30c7\u30ea\u30f3\u30b0\u3092\u5b66\u3076\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u3092\u6559\u3048\u3066\u304f\u308c\u305f5\u3064\u306e\u5b9f\u4e16\u754c\u306e\u4f8b - ArchiMetric Japanese\" 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