某储备粮的“学习笔记” - 关系模型概念整理 (Relational Model) 的评论 http://blog.gregwym.info/guan-xi-mo-xing-gai-nian-zheng-li.html Definition实在不知道怎么概括= =...Intention of a relation: relation definition and constrainsExtention of a r... 咳嗽di小鱼 http://blog.gregwym.info/guan-xi-mo-xing-gai-nian-zheng-li.html#comment-477 2011-10-20T02:42:05+08:00 哈哈`你不也+了我的友链... CzBiX http://blog.gregwym.info/guan-xi-mo-xing-gai-nian-zheng-li.html#comment-476 2011-10-19T21:57:33+08:00 在你的博客友情链接里惊现'疯狂的小盒子'字样,甚是诧异