{"id":1129,"date":"2026-03-29T08:16:42","date_gmt":"2026-03-29T08:16:42","guid":{"rendered":"https:\/\/www.method-post.com\/ja\/decoding-multiplicity-class-diagrams-guide\/"},"modified":"2026-03-29T08:16:42","modified_gmt":"2026-03-29T08:16:42","slug":"decoding-multiplicity-class-diagrams-guide","status":"publish","type":"post","link":"https:\/\/www.method-post.com\/ja\/decoding-multiplicity-class-diagrams-guide\/","title":{"rendered":"\u591a\u91cd\u6027\u306e\u89e3\u8aad\uff1a1:N\u30011:1\u3001N:N\u95a2\u4fc2\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\u305f\u3081\u306e\u30b7\u30f3\u30d7\u30eb\u306a\u30ac\u30a4\u30c9"},"content":{"rendered":"<p>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3068\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u306e\u6587\u8108\u306b\u304a\u3044\u3066\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u9593\u306e\u95a2\u4fc2\u6027\u307b\u3069\u91cd\u8981\u306a\u6982\u5ff5\u306f\u5c11\u306a\u3044\u3002\u30b7\u30b9\u30c6\u30e0\u3092\u8a2d\u8a08\u3059\u308b\u969b\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3069\u3046\u3057\u304c\u3069\u306e\u3088\u3046\u306b\u76f8\u4e92\u4f5c\u7528\u3059\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u81ea\u4f53\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3068\u540c\u7b49\u306b\u91cd\u8981\u3067\u3042\u308b\u3002\u3053\u306e\u76f8\u4e92\u4f5c\u7528\u306f\u6b63\u5f0f\u306b\u300c<strong>\u30af\u30e9\u30b9\u56f3\u306e\u591a\u91cd\u6027<\/strong>\u300d\u3068\u3044\u3046\u8868\u8a18\u306b\u3088\u3063\u3066\u8868\u73fe\u3055\u308c\u308b\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b9\u30ad\u30fc\u30de\u3092\u8a2d\u8a08\u3057\u3066\u3044\u308b\u5834\u5408\u3067\u3082\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u306e\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3092\u69cb\u9020\u5316\u3057\u3066\u3044\u308b\u5834\u5408\u3067\u3082\u3001\u3053\u3053\u3067\u306e\u660e\u78ba\u3055\u304c\u3001\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u7684\u8ca0\u50b5\u304c\u767a\u751f\u3059\u308b\u524d\u306b\u9632\u3050\u3002<\/p>\n<p>\u591a\u91cd\u6027\u306f\u3001\u3042\u308b\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u5225\u306e\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068\u95a2\u9023\u4ed8\u3051\u3089\u308c\u308b\u6570\u306b\u5236\u7d04\u3092\u8a2d\u3051\u308b\u3002\u6839\u672c\u7684\u306a\u554f\u3044\u306b\u7b54\u3048\u308b\uff1a1\u4eba\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u8907\u6570\u306e\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u3092\u6240\u6709\u3067\u304d\u308b\u304b\uff1f1\u3064\u306e\u6ce8\u6587\u304c\u8907\u6570\u306e\u9867\u5ba2\u306b\u5c5e\u3067\u304d\u308b\u304b\uff1f\u3053\u308c\u3089\u306e\u9055\u3044\u306f\u30c7\u30fc\u30bf\u306e\u6d41\u308c\u3068\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6574\u5408\u6027\u3092\u5f62\u4f5c\u308b\u3002\u672c\u30ac\u30a4\u30c9\u3067\u306f\u3001\u57fa\u672c\u3068\u306a\u308b\u57fa\u6570\uff081:1\u30011:N\u3001N:N\uff09\u3092\u691c\u8a0e\u3057\u3001\u5b9f\u88c5\u65b9\u6cd5\u3001\u5f71\u97ff\u3001\u304a\u3088\u3073\u3088\u304f\u3042\u308b\u843d\u3068\u3057\u7a74\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3059\u308b\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"A playful child's drawing style infographic explaining class diagram multiplicity: one-to-one (1:1) shown as a person with one passport, one-to-many (1:N) as a tree with many apples, and many-to-many (N:N) as students connected to courses via a junction table, with simple UML notation symbols (1, *, 0..1) in bright crayon colors on a white background, teaching software architecture relationships in an intuitive visual way\" decoding=\"async\" src=\"https:\/\/www.method-post.com\/wp-content\/uploads\/2026\/03\/multiplicity-relationships-infographic-childs-drawing.jpg\"\/><\/figure>\n<\/div>\n<h2>\u57fa\u790e\u3092\u7406\u89e3\u3059\u308b\uff1a\u8868\u8a18\u6cd5\u3068\u7528\u8a9e \ud83e\udde9<\/h2>\n<p>\u7279\u5b9a\u306e\u95a2\u4fc2\u30bf\u30a4\u30d7\u306b\u53d6\u308a\u7d44\u3080\u524d\u306b\u3001\u7d71\u5408\u30e2\u30c7\u30eb\u5316\u8a00\u8a9e\uff08UML\uff09\u304a\u3088\u3073\u4e00\u822c\u7684\u306a\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u3067\u4f7f\u7528\u3055\u308c\u308b\u7528\u8a9e\u3092\u660e\u78ba\u306b\u3059\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3042\u308b\u3002\u591a\u91cd\u6027\u3068\u306f\u5358\u306a\u308b\u6570\u3048\u4e0a\u3052\u3067\u306f\u306a\u304f\u3001\u30eb\u30fc\u30eb\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3042\u308b\u3002<\/p>\n<ul>\n<li><strong>\u57fa\u6570\uff1a<\/strong> \u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u95a2\u4fc2\u306b\u53c2\u52a0\u3067\u304d\u308b\u6570\u3002\u3053\u308c\u306f\u901a\u5e38\u3001<code>1<\/code>, <code>*<\/code>\u3084\u7bc4\u56f2\u3068\u3057\u3066<code>0..1<\/code>.<\/li>\n<li><strong>\u30aa\u30d7\u30b7\u30e7\u30ca\u30ea\u30c6\u30a3\uff1a<\/strong> 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\u4ee5\u4e0b\u306e<code>\u5916\u90e8\u30ad\u30fc<\/code>\u5236\u7d04\u3092\u8ffd\u52a0\u3057\u3066\u53c2\u7167\u6574\u5408\u6027\u3092\u78ba\u4fdd\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5b64\u7acb\u3057\u305f\u30ec\u30b3\u30fc\u30c9\u304c\u767a\u751f\u3059\u308b\u306e\u3092\u9632\u3050\u3002<\/li>\n<li><strong>\u4e00\u610f\u5236\u7d04\uff1a<\/strong> \u300c1\u300d\u5074\u3092\u53b3\u5bc6\u306b\u5f37\u5236\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u5916\u90e8\u30ad\u30fc\u3092\u542b\u3080\u5217\u306b<code>\u4e00\u610f<\/code>\u5236\u7d04\u3092\u8a2d\u3051\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u30012\u3064\u306e\u884c\u304c\u540c\u3058\u89aa\u3092\u6307\u3059\u3053\u3068\u306f\u306a\u304f\u306a\u308b\u3002<\/li>\n<li><strong>\u30b3\u30fc\u30c9\u306e\u53c2\u7167\uff1a<\/strong> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001\u901a\u5e38\u3001\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3067\u306f\u306a\u304f\u5358\u4e00\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3078\u306e\u76f4\u63a5\u53c2\u7167\u3068\u3057\u3066\u73fe\u308c\u308b\u3002<code>User<\/code> \u30af\u30e9\u30b9\u306b\u306f\u3001<code>Profile<\/code> \u578b\u306e\u30d7\u30ed\u30d1\u30c6\u30a3<code>Profile<\/code> \u304c\u3042\u308b\u304c\u3001<code>List&lt;Profile&gt;<\/code>.<\/li>\n<\/ul>\n<h2>1\u5bfe\u591a\u306e\u95a2\u4fc2 (1:N) \ud83c\udf33<\/h2>\n<p>1\u5bfe\u591a\u306e\u95a2\u4fc2\u306f\u3001\u4f01\u696d\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u6700\u3082\u4e00\u822c\u7684\u306a\u95a2\u9023\u3067\u3042\u308b\u3002\u3053\u3053\u3067\u306f\u3001Class A\u306e\u5358\u4e00\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u3001Class B\u306e\u30bc\u30ed\u500b\u4ee5\u4e0a\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u95a2\u9023\u3059\u308b\u3002\u305f\u3060\u3057\u3001Class B\u306e\u5404\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u3001Class A\u306e\u6b63\u78ba\u306b1\u3064\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u95a2\u9023\u3059\u308b\u3002\u8868\u8a18\u6cd5\u3067\u306f\u3001\u7247\u65b9\u306e\u7aef\u306b<code>1<\/code> \u3092\u3001\u3082\u3046\u7247\u65b9\u306e\u7aef\u306b<code>*<\/code>\uff08\u307e\u305f\u306f<code>0..*<\/code>\uff09\u3092\u793a\u3059\u3053\u3068\u304c\u4e00\u822c\u7684\u3067\u3042\u308b\u3002<\/p>\n<h3>\u4e00\u822c\u7684\u306a\u30b7\u30ca\u30ea\u30aa<\/h3>\n<p>\u3053\u306e\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u89aa\u304c\u8907\u6570\u306e\u5b50\u3092\u6240\u6709\u3059\u308b\u968e\u5c64\u69cb\u9020\u306e\u30c7\u30fc\u30bf\u3092\u8a18\u8ff0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u6ce8\u6587\u3068\u660e\u7d30\u9805\u76ee\uff1a<\/strong>1\u3064\u306e\u6ce8\u6587\u306b\u306f\u8907\u6570\u306e\u660e\u7d30\u9805\u76ee\u304c\u542b\u307e\u308c\u307e\u3059\u304c\u3001\u5404\u660e\u7d30\u9805\u76ee\u306f1\u3064\u306e\u6ce8\u6587\u306b\u306e\u307f\u5c5e\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u90e8\u7f72\u3068\u5f93\u696d\u54e1\uff1a<\/strong>\u90e8\u7f72\u306f\u591a\u304f\u306e\u5f93\u696d\u54e1\u3092\u96c7\u7528\u3057\u307e\u3059\u304c\u3001\u5f93\u696d\u54e1\u306f\u5358\u7d14\u306a\u69cb\u9020\u3067\u306f1\u3064\u306e\u90e8\u7f72\u306b\u306e\u307f\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u30ab\u30c6\u30b4\u30ea\u3068\u88fd\u54c1\uff1a<\/strong>\u88fd\u54c1\u30ab\u30c6\u30b4\u30ea\u306b\u306f\u591a\u304f\u306e\u88fd\u54c1\u304c\u542b\u307e\u308c\u307e\u3059\u304c\u3001\u88fd\u54c1\u306f1\u3064\u306e\u7279\u5b9a\u306e\u30ab\u30c6\u30b4\u30ea\u306b\u5c5e\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>\u30c7\u30fc\u30bf\u306e\u69cb\u9020\u5316<\/h3>\n<p>1:N\u95a2\u4fc2\u306e\u5b9f\u88c5\u306f\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u306f\u7c21\u5358\u3067\u3059\u304c\u3001\u30e1\u30e2\u30ea\u30e2\u30c7\u30eb\u3067\u306f\u7279\u5b9a\u306e\u51e6\u7406\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u5916\u90e8\u30ad\u30fc\u306e\u914d\u7f6e\uff1a<\/strong> \u5916\u90e8\u30ad\u30fc\u306f\u300c\u591a\u6570\u300d\u5074\uff08\u5b50\u30c6\u30fc\u30d6\u30eb\uff09\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002\u6ce8\u6587\u30c6\u30fc\u30d6\u30eb\u306b\u306f\u3001\u660e\u7d30\u9805\u76ee\u30c6\u30fc\u30d6\u30eb\u306b\u30ea\u30f3\u30af\u3059\u308b <code>order_id<\/code> \u5217\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u7ba1\u7406\uff1a<\/strong> \u300c1\u300d\u5074\uff08\u89aa\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff09\u3067\u306f\u3001\u901a\u5e38\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u7dad\u6301\u3057\u307e\u3059\u3002<code>\u9867\u5ba2<\/code> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u306f\u3001<code>\u6ce8\u6587<\/code> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30ea\u30b9\u30c8\u307e\u305f\u306f\u914d\u5217\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff\uff1a<\/strong> \u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u304c\u5927\u304d\u304f\u306a\u308b\u3068\u3001\u300c\u591a\u6570\u300d\u5074\u306e\u53d6\u5f97\u304c\u9ad8\u30b3\u30b9\u30c8\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u521d\u671f\u30af\u30a8\u30ea\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u6e1b\u3089\u3059\u305f\u3081\u306b\u3001\u5b50\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30a2\u30af\u30bb\u30b9\u6642\u306b\u306e\u307f\u53d6\u5f97\u3059\u308b\u9045\u5ef6\u8aad\u307f\u8fbc\u307f\u304c\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>\u9023\u9396\u524a\u9664\u306e\u51e6\u7406<\/h3>\n<p>1:N\u8a2d\u8a08\u306b\u304a\u3051\u308b\u91cd\u8981\u306a\u6c7a\u5b9a\u306f\u3001\u89aa\u304c\u524a\u9664\u3055\u308c\u305f\u3068\u304d\u306b\u4f55\u304c\u8d77\u3053\u308b\u304b\u3067\u3059\u3002\u90e8\u7f72\u3092\u524a\u9664\u3059\u308b\u3068\u3001\u3059\u3079\u3066\u306e\u5f93\u696d\u54e1\u3082\u524a\u9664\u3055\u308c\u307e\u3059\u304b\uff1f\u901a\u5e38\u306f\u3044\u3044\u3048\u3067\u3059\u304c\u3001\u30b7\u30b9\u30c6\u30e0\u306f\u3053\u308c\u3092\u51e6\u7406\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<ul>\n<li><strong>\u9023\u9396\u524a\u9664\uff1a<\/strong> \u89aa\u304c\u524a\u9664\u3055\u308c\u308b\u3068\u3001\u3059\u3079\u3066\u306e\u5b50\u30ec\u30b3\u30fc\u30c9\u304c\u81ea\u52d5\u7684\u306b\u524a\u9664\u3055\u308c\u307e\u3059\u3002\u6ce8\u6587\u30ed\u30b0\u306e\u3088\u3046\u306a\u4e00\u6642\u30c7\u30fc\u30bf\u306b\u6709\u7528\u3067\u3059\u3002<\/li>\n<li><strong>\u524a\u9664\u5236\u9650\uff1a<\/strong> \u5b50\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306f\u89aa\u306e\u524a\u9664\u3092\u7981\u6b62\u3057\u307e\u3059\u3002\u88fd\u54c1\u306e\u3088\u3046\u306a\u30b3\u30a2\u30c7\u30fc\u30bf\u306b\u6709\u7528\u3067\u3059\u3002<\/li>\n<li><strong>NULL\u5316\uff1a<\/strong> \u5b50\u306e\u5916\u90e8\u30ad\u30fc\u3092NULL\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u5b50\u304cNULL\u5024\u3092\u8a31\u53ef\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u591a\u5bfe\u591a\u95a2\u4fc2 (N:N) \ud83d\udd78\ufe0f<\/h2>\n<p>\u591a\u5bfe\u591a\u95a2\u4fc2\u306f\u30013\u3064\u306e\u95a2\u4fc2\u306e\u4e2d\u3067\u6700\u3082\u8907\u96d1\u3067\u3059\u3002\u30af\u30e9\u30b9A\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u30af\u30e9\u30b9B\u306e\u8907\u6570\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u95a2\u9023\u4ed8\u3051\u3089\u308c\u3001\u30af\u30e9\u30b9B\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u30af\u30e9\u30b9A\u306e\u8907\u6570\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u95a2\u9023\u4ed8\u3051\u3089\u308c\u308b\u5834\u5408\u306b\u767a\u751f\u3057\u307e\u3059\u3002\u8868\u8a18\u6cd5\u3067\u306f<code>*<\/code>\uff08\u307e\u305f\u306f<code>0..*<\/code>\uff09\u304c\u4e21\u7aef\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3>\u73fe\u5b9f\u4e16\u754c\u306e\u4f8b<\/h3>\n<p>\u3053\u306e\u95a2\u4fc2\u306f\u3001\u30bf\u30b0\u3001\u5f79\u5272\u3001\u307e\u305f\u306f\u767b\u9332\u3092\u542b\u3080\u72b6\u6cc1\u3067\u3088\u304f\u898b\u3089\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u751f\u5f92\u3068\u6388\u696d\uff1a<\/strong>\u751f\u5f92\u306f\u8907\u6570\u306e\u6388\u696d\u306b\u767b\u9332\u3057\u3001\u6388\u696d\u306b\u306f\u8907\u6570\u306e\u751f\u5f92\u304c\u3044\u307e\u3059\u3002<\/li>\n<li><strong>\u8457\u8005\u3068\u672c\uff1a<\/strong>\u8457\u8005\u306f\u8907\u6570\u306e\u672c\u3092\u57f7\u7b46\u3057\u3001\u672c\u306b\u306f\u8907\u6570\u306e\u8457\u8005\uff08\u5171\u540c\u8457\u8005\uff09\u304c\u3044\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u30b9\u30ad\u30eb\u3068\u5f93\u696d\u54e1\uff1a<\/strong>\u5f93\u696d\u54e1\u306f\u8907\u6570\u306e\u30b9\u30ad\u30eb\u3092\u6301\u3061\u3001\u30b9\u30ad\u30eb\u306f\u8907\u6570\u306e\u5f93\u696d\u54e1\u304c\u6240\u6709\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>\u7d50\u5408\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u89e3\u6c7a\u7b56<\/h3>\n<p>\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306bN:N\u95a2\u4fc2\u3092\u76f4\u63a5\u5b9f\u88c5\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u30021\u3064\u306e\u5916\u90e8\u30ad\u30fc\u3067\u306f\u3001\u66d6\u6627\u3055\u306a\u304f2\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u53cc\u65b9\u5411\u306b\u30ea\u30f3\u30af\u3067\u304d\u307e\u305b\u3093\u3002\u89e3\u6c7a\u7b56\u306f<strong>\u7d50\u5408\u30c6\u30fc\u30d6\u30eb<\/strong>\uff08\u307e\u305f\u306f\u95a2\u9023\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\uff09\u306e\u5c0e\u5165\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u306b\u3088\u308a\u3001N:N\u95a2\u4fc2\u304c2\u3064\u306e1:N\u95a2\u4fc2\u306b\u5206\u5272\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u69cb\u9020\uff1a<\/strong> \u7d50\u5408\u30c6\u30fc\u30d6\u30eb\u306b\u306f\u3001\u95a2\u9023\u3059\u308b2\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u4e3b\u30ad\u30fc\u304c\u5916\u90e8\u30ad\u30fc\u3068\u3057\u3066\u542b\u307e\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u8ffd\u52a0\u30c7\u30fc\u30bf\uff1a<\/strong>\u5358\u7d14\u306a\u30ea\u30f3\u30af\u3068\u306f\u7570\u306a\u308a\u3001\u7d50\u5408\u30c6\u30fc\u30d6\u30eb\u306f\u72ec\u81ea\u306e\u5c5e\u6027\u3092\u4fdd\u6301\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u751f\u5f92\u3068\u6388\u696d\u306e\u30ea\u30f3\u30af\u306b\u306f<code>\u6210\u7e3e<\/code>\u307e\u305f\u306f<code>\u767b\u9332\u65e5<\/code>.<\/li>\n<li><strong>\u8907\u5408\u30ad\u30fc\uff1a<\/strong> \u7d50\u5408\u30c6\u30fc\u30d6\u30eb\u306e\u4e3b\u30ad\u30fc\u306f\u3001\u901a\u5e38\u30012\u3064\u306e\u5916\u90e8\u30ad\u30fc\u304b\u3089\u306a\u308b\u8907\u5408\u30ad\u30fc\u3067\u3042\u308a\u3001\u4e00\u610f\u306e\u30da\u30a2\u30ea\u30f3\u30b0\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u306e\u5b9f\u88c5<\/h3>\n<p>\u30b3\u30fc\u30c9\u3067\u306f\u3001N:N\u95a2\u4fc2\u3092\u7ba1\u7406\u3059\u308b\u306b\u306f\u53cc\u65b9\u5411\u306e\u4e00\u8cab\u6027\u3092\u7dad\u6301\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u751f\u5f92\u306b\u6388\u696d\u3092\u8ffd\u52a0\u3059\u308b\u5834\u5408\u3001\u6388\u696d\u306e\u30ea\u30b9\u30c8\u306b\u3082\u751f\u5f92\u3092\u8ffd\u52a0\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<ul>\n<li><strong>\u540c\u671f\uff1a<\/strong>\u3053\u308c\u3089\u306e\u30ea\u30f3\u30af\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u306b\u30d8\u30eb\u30d1\u30fc\u30e1\u30bd\u30c3\u30c9\u3092\u4f5c\u6210\u3059\u3079\u304d\u3067\u3059\u3002<code>Student.addCourse(Course c)<\/code>\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u751f\u5f92\u3092\u6388\u696d\u306e\u30ea\u30b9\u30c8\u306b\u81ea\u52d5\u7684\u306b\u8ffd\u52a0\u3059\u3079\u304d\u3067\u3059\u3002<\/li>\n<li><strong>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\uff1a<\/strong>\u30c7\u30fc\u30bf\u304c2\u3064\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\uff08\u751f\u5f92\u306e\u30ea\u30b9\u30c8\u3068\u6388\u696d\u306e\u30ea\u30b9\u30c8\uff09\u306b\u91cd\u8907\u3057\u3066\u4fdd\u5b58\u3055\u308c\u308b\u305f\u3081\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u5897\u52a0\u3057\u307e\u3059\u3002\u30ea\u30f3\u30af\u304c\u524a\u9664\u3055\u308c\u305f\u5834\u5408\u3001\u30ac\u30d9\u30fc\u30b8\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u304c\u5b64\u7acb\u3057\u305f\u53c2\u7167\u3092\u9069\u5207\u306b\u51e6\u7406\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ul>\n<h2>\u57fa\u6570 vs. \u5fc5\u9808\u6027\uff1a\u91cd\u8981\u306a\u9055\u3044 \u2696\ufe0f<\/h2>\n<p>\u591a\u91cd\u6027\u306b\u3064\u3044\u3066\u8b70\u8ad6\u3059\u308b\u969b\u3001\u4f55\u500b\u3042\u308b\u304b\u3068\u3044\u3046\u70b9\u3068\u3001\u5fc5\u9808\u304b\u3069\u3046\u304b\u3068\u3044\u3046\u70b9\u3092\u660e\u78ba\u306b\u533a\u5225\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u308c\u3089\u306f\u3057\u3070\u3057\u3070\u6df7\u540c\u3055\u308c\u307e\u3059\u304c\u3001\u7570\u306a\u308b\u30eb\u30fc\u30eb\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u6700\u5c0f\u57fa\u6570\uff1a<\/strong> \u5fc5\u8981\u306a\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u6700\u5c0f\u6570\u3067\u3059\u3002\u901a\u5e38\u306f0\u307e\u305f\u306f1\u3067\u3059\u3002<\/li>\n<li><strong>\u6700\u5927\u57fa\u6570\uff1a<\/strong> \u8a31\u53ef\u3055\u308c\u308b\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u6700\u5927\u6570\u3067\u3059\u3002\u901a\u5e38\u306f1\u307e\u305f\u306f\u8907\u6570\uff08*\uff09\u3067\u3059\u3002<\/li>\n<li><strong>\u30bc\u30ed\u307e\u305f\u306f\u4e00\u3064\uff080..1\uff09\uff1a<\/strong> \u95a2\u4fc2\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3059\u3002\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3082\u3001\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u4e00\u3064\u4ee5\u4e0a\uff081..*\uff09\uff1a<\/strong> \u95a2\u4fc2\u306f\u5fc5\u9808\u3067\u3059\u3002\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u5b58\u5728\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u3001\u8907\u6570\u5b58\u5728\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306a<code>\u5f93\u696d\u54e1<\/code>\u3068<code>\u30de\u30cd\u30fc\u30b8\u30e3\u30fc<\/code>\u306e\u95a2\u4fc2\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u5f93\u696d\u54e1\u306f\u5fc5\u305a\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3092\u6301\u305f\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\uff081..1\uff09\u304c\u3001\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u306f\u7279\u5b9a\u306e\u6642\u70b9\u3067\u8ab0\u3082\u7ba1\u7406\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3082\u3042\u308a\u307e\u3059\uff080..*\uff09\u3002\u3053\u308c\u3089\u306e\u30cb\u30e5\u30a2\u30f3\u30b9\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u6b63\u78ba\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5236\u7d04\u3068\u691c\u8a3c\u30ed\u30b8\u30c3\u30af\u3092\u8a2d\u8a08\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u8a2d\u8a08\u3092\u5b9f\u88c5\u306b\u7ffb\u8a33\u3059\u308b \ud83d\udee0\ufe0f<\/h2>\n<p>\u30af\u30e9\u30b9\u56f3\u304c\u6700\u7d42\u6c7a\u5b9a\u3055\u308c\u305f\u5f8c\u3001\u5b9f\u969b\u306e\u30b3\u30fc\u30c9\u3068\u30b9\u30c8\u30ec\u30fc\u30b8\u3078\u306e\u79fb\u884c\u306b\u306f\u3001\u5404\u95a2\u4fc2\u30bf\u30a4\u30d7\u3054\u3068\u306b\u7279\u5b9a\u306e\u6226\u7565\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<h3>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30b9\u30ad\u30fc\u30de\u8a2d\u8a08<\/h3>\n<p>\u7269\u7406\u30b9\u30ad\u30fc\u30de\u306f\u30b7\u30b9\u30c6\u30e0\u3067\u6700\u3082\u786c\u76f4\u7684\u306a\u90e8\u5206\u3067\u3059\u3002\u3053\u3053\u3067\u306e\u5909\u66f4\u306f\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u6b63\u898f\u5316\uff1a<\/strong> \u30c7\u30b6\u30a4\u30f3\u304c\u6b63\u898f\u5316\u30eb\u30fc\u30eb\uff08\u901a\u5e38\u306f3NF\u307e\u3067\uff09\u306b\u5f93\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5197\u9577\u306a\u30c7\u30fc\u30bf\u306f\u3001\u95a2\u4fc2\u306e\u7406\u89e3\u4e0d\u8db3\u304b\u3089\u751f\u3058\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/li>\n<li><strong>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5316\uff1a<\/strong> \u5916\u90e8\u30ad\u30fc\u5217\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5316\u3059\u3079\u304d\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7d50\u5408\u3084\u5236\u7d04\u30c1\u30a7\u30c3\u30af\u306e\u901f\u5ea6\u304c\u8457\u3057\u304f\u5411\u4e0a\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u30c7\u30fc\u30bf\u578b:<\/strong> \u4e3b\u30ad\u30fc\u306e\u30c7\u30fc\u30bf\u578b\u304c\u5916\u90e8\u30ad\u30fc\u3068\u6b63\u78ba\u306b\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u578b\u306e\u4e0d\u4e00\u81f4\u306f\u5b9f\u884c\u6642\u30a8\u30e9\u30fc\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u306e\u30ed\u30b8\u30c3\u30af<\/h3>\n<p>\u30b3\u30fc\u30c9\u5c64\u3067\u30d3\u30b8\u30cd\u30b9\u30eb\u30fc\u30eb\u304c\u95a2\u4fc2\u6027\u3092\u5f37\u5236\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u691c\u8a3c:<\/strong> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4fdd\u5b58\u3059\u308b\u524d\u306b\u3001\u95a2\u4fc2\u6027\u306e\u5236\u7d04\u304c\u6e80\u305f\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u691c\u8a3c\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305f\u3068\u3048\u3070\u3001\u3059\u3067\u306b\u5b9a\u54e1\u306b\u9054\u3057\u3066\u3044\u308b\u30b3\u30fc\u30b9\u306b\u5b66\u751f\u304c\u767b\u9332\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u7ba1\u7406:<\/strong> \u95a2\u9023\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u307e\u305f\u306f\u66f4\u65b0\u3059\u308b\u969b\u306b\u306f\u3001\u64cd\u4f5c\u3092\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3067\u56f2\u3093\u3067\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u95a2\u4fc2\u6027\u306e\u4e00\u90e8\u304c\u5931\u6557\u3057\u305f\u5834\u5408\u3001\u3059\u3079\u3066\u306e\u5909\u66f4\u304c\u5143\u306b\u623b\u3055\u308c\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002<\/li>\n<li><strong>API\u306e\u5fdc\u7b54:<\/strong> API\u7d4c\u7531\u3067\u30c7\u30fc\u30bf\u3092\u516c\u958b\u3059\u308b\u969b\u306b\u306f\u3001\u95a2\u9023\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u3069\u306e\u7a0b\u5ea6\u6df1\u304f\u30cd\u30b9\u30c8\u3059\u308b\u304b\u3092\u6c7a\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u30021\u56de\u306e\u5fdc\u7b54\u3067\u9867\u5ba2\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u305d\u306e\u3059\u3079\u3066\u306e\u6ce8\u6587\u3092\u8fd4\u3059\u3068\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u4e00\u822c\u7684\u306a\u843d\u3068\u3057\u7a74\u3068\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3 \ud83d\udeab<\/h2>\n<p>\u7d4c\u9a13\u8c4a\u5bcc\u306a\u30c7\u30b6\u30a4\u30ca\u30fc\u3067\u3082\u3001\u591a\u91cd\u6027\u3092\u5b9a\u7fa9\u3059\u308b\u969b\u306b\u8aa4\u308a\u3092\u72af\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u65e9\u671f\u306b\u8a8d\u8b58\u3059\u308b\u3053\u3068\u3067\u3001\u5f8c\u3005\u306e\u5927\u5e45\u306a\u518d\u8a2d\u8a08\u6642\u9593\u3092\u7bc0\u7d04\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>N:N\u304c\u5e38\u306b\u5fc5\u8981\u3067\u3042\u308b\u3068\u4eee\u5b9a\u3059\u308b:<\/strong> 2\u3064\u306e\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u304c\u95a2\u9023\u3057\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u308b\u5834\u5408\u3067\u3082\u3001\u5b9f\u969b\u306b\u76f4\u63a5\u7684\u306a\u30ea\u30f3\u30af\u304c\u5fc5\u8981\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u95a2\u4fc2\u304c\u65b9\u5411\u6027\u3092\u6301\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u30011:N\u3067\u5341\u5206\u306a\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/li>\n<li><strong>\u30aa\u30d7\u30b7\u30e7\u30f3\u6027\u3092\u7121\u8996\u3059\u308b:<\/strong> \u5b9f\u969b\u306b\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\uff080..1\uff09\u306e\u95a2\u4fc2\u6027\u306a\u306e\u306b\u3001\u5fc5\u9808\u30ea\u30f3\u30af\uff081..1\uff09\u3092\u8a2d\u8a08\u3059\u308b\u3068\u3001\u30c7\u30fc\u30bf\u5165\u529b\u30a8\u30e9\u30fc\u3068\u786c\u76f4\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u3092\u62db\u304d\u307e\u3059\u3002<\/li>\n<li><strong>\u5faa\u74b0\u4f9d\u5b58:<\/strong> \u30af\u30e9\u30b9A\u304c\u30af\u30e9\u30b9B\u3092\u53c2\u7167\u3057\u3001\u30af\u30e9\u30b9B\u304c\u30af\u30e9\u30b9A\u3092\u53c2\u7167\u3059\u308b\u5834\u5408\u3001\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3084\u30e1\u30e2\u30ea\u7ba1\u7406\u304c\u554f\u984c\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u30c8\u30e9\u30d0\u30fc\u30b5\u30eb\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u304a\u3051\u308b\u6df1\u3044\u518d\u5e30\u306b\u306f\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u904e\u5270\u8a2d\u8a08\u3055\u308c\u305f\u7d50\u5408\u30c6\u30fc\u30d6\u30eb:<\/strong> 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