{"width":"100%","author_url":"https://blog.hatena.ne.jp/bleis-tift/","published":"2008-07-04 21:17:28","categories":["etc"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbleis-tift.hatenablog.com%2Fentry%2F20080704%2F1215173848\" title=\"\u3053\u308c\u306f\u30fb\u30fb\u30fb - \u3050\u308b\u3050\u308b\uff5e\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"\u3053\u308c\u306f\u30fb\u30fb\u30fb","author_name":"bleis-tift","provider_url":"https://hatena.blog","blog_url":"https://bleis-tift.hatenablog.com/","height":"190","provider_name":"Hatena Blog","type":"rich","blog_title":"\u3050\u308b\u3050\u308b\uff5e","image_url":null,"version":"1.0","description":"\u68b6\u672c\u88d5\u4ecb\u306e\u65e5\u8a18 \u3069\u3063\u304b\u3067\u805e\u3044\u305f\u3053\u3068\u306e\u3042\u308b\u72b6\u6cc1\u3060w \u306a\u305c\u305d\u3046\u306a\u3063\u3066\u3044\u308b\u304b\u3092\u7d4c\u9a13\u3092\u5143\u306b\u4e88\u60f3\u3002 \u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u6b63\u898f\u5316\u3057\u3066\u306f\u3044\u3051\u306a\u3044 \u6b32\u3057\u3044\u30c7\u30fc\u30bf\u306f\u4e00\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u306b\u3042\u308b\u3079\u304d\u3068\u3044\u3046\u4fe1\u5ff5\u3002 SQL\u3067\u306fNUMBER\u3068VARCHAR\u4ee5\u5916\u306e\u578b\u3092\u4f7f\u3063\u3066\u306f\u3044\u3051\u306a\u3044 DBMS\u306e\u578b\u3068\u30db\u30b9\u30c8\u8a00\u8a9e\u306e\u578b\u306e\u4e0d\u4e00\u81f4\u306b\u3088\u308b\u554f\u984c\u3092\u907f\u3051\u305f\u304b\u3063\u305f\u3002VARCHAR*1\u3057\u304b\u4f7f\u3063\u3066\u3044\u306a\u3044\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3082\u3042\u3063\u305f\u304f\u3089\u3044\u3002 \u7d50\u5408\u306f\u3067\u304d\u308b\u3060\u3051\u907f\u3051\u308b\u3053\u3068 \u7d50\u5408\u306b\u3088\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c0\u30a6\u30f3\u3092\u6050\u308c\u3066\u3044\u308b\u3002\u6b63\u898f\u5316\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u306a\u3089\u3001\u3042\u308b\u610f\u5473\u59a5\u5f53\u304b\u3082\u3057\u308c\u306a\u3044\u304c\u30fb\u30fb\u30fb \u30c6\u30fc\u30d6\u30eb\u3068\u30af\u30e9\u30b9\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306f1\u5bfe1\u306b\u5bfe\u5fdc\u3057\u3066\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044 O/R\u30de\u30c3\u30d4\u30f3\u30b0\u7684\u306a\u30c4\u30fc\u30eb\u306e\u5236\u7d04\u304b\u2026","url":"https://bleis-tift.hatenablog.com/entry/20080704/1215173848"}