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 database’s data.
A
user is a name defined in the database that can connect to and
access objects.
Schemas and users help database
administrators manage database security.
http://blog.csdn.net/kimsoft/article/details/4627520
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