2014年1月17日

relational model
摘要： Massive,Persistent,Safe,Multi-user,Convenient,Efficient,Reliable--------------------------------------------------------------------Database = set of named relations(or tables)Each relation has a set of named attributes(or columns)Each tuple(or row) has a value for each attributeEach attribute has a 阅读全文
posted @ 2014-01-17 23:44 架构师师 阅读(247) 评论(0) 推荐(0) 编辑
postgresql
摘要： http://www.postgresql.org/ 阅读全文
posted @ 2014-01-17 21:30 架构师师 阅读(140) 评论(0) 推荐(0) 编辑

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