摘要:
我们先来看一下他们的定义: A schema is a collection of database objects (used by a user.). Schema objects are the logical structures that directly refer to the dat 阅读全文
posted @ 2012-03-16 12:14
hongweigg
阅读(8)
评论(0)
推荐(0)

浙公网安备 33010602011771号