通过昵称，还可以定义引用来自多个数据源的数据的视图。

Using nicknames, you can also define a view that references data from multiple data sources.

youdao

通过昵称，还可以定义引用来自多个数据源的数据的视图。

Using nicknames, you can also define a view that references data from multiple data sources.

youdao