{"published":"2005-09-20 00:00:00","version":"1.0","blog_url":"https://taedium.hatenadiary.org/","image_url":null,"author_name":"taedium","height":"190","categories":["EJB\u5165\u9580\u8a18"],"author_url":"https://blog.hatena.ne.jp/taedium/","provider_name":"Hatena Blog","type":"rich","provider_url":"https://hatena.blog","url":"https://taedium.hatenadiary.org/entry/20050920/p1","description":"2.1.10 Inheritance Mapping Strategeies\u4eca\u56de\u306f\u7d99\u627f\u306b\u95a2\u3059\u308b\u30de\u30c3\u30d4\u30f3\u30b0\u6226\u7565\u3067\u3059\u3002 \u30af\u30e9\u30b9\u3084\u30af\u30e9\u30b9\u968e\u5c64\u3092RDB\u306e\u30b9\u30ad\u30fc\u30de\u306b\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b\u306b\u306f3\u3064\u306e\u6226\u7565\u304c\u3042\u308a\u307e\u3059\u30023\u756a\u76ee\u306f\u65e5\u672c\u8a9e\u306b\u3059\u308b\u306e\u96e3\u3057\u3044\u3002 single table per class hierarchy strategy \u2015 \u3072\u3068\u3064\u306e\u30af\u30e9\u30b9\u968e\u5c64\u306b\u3072\u3068\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u6226\u7565 table per class strategy \u2015 \u3072\u3068\u3064\u306e\u30af\u30e9\u30b9\u306b\u3064\u304d\u3072\u3068\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u6226\u7565 joined subclass stragegy \u2015 \u30b9\u30fc\u30d1\u30fc\u30af\u30e9\u30b9\u3068\u30b5\u30d6\u30af\u30e9\u30b9\u3067\u30c6\u30fc\u30d6\u30eb\u3092\u5225\u306b\u3057\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u6642\u306b\u306fJoin\u3092\u3064\u304b\u3046\u6226\u7565 \u2026","blog_title":"taedium\u306e\u65e5\u8a18","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftaedium.hatenadiary.org%2Fentry%2F20050920%2Fp1\" title=\" EJB 3.0(Public Draft)\u5165\u9580\u8a18 Java Persistence API Chapter2 \u305d\u306e13 - taedium\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":" EJB 3.0(Public Draft)\u5165\u9580\u8a18 Java Persistence API Chapter2 \u305d\u306e13","width":"100%"}