It generally retrieves no useful information for nicknames over nonrelational objects, remote views, or aliases.
对于非关系对象、远程视图或别名,它通常会检索到没用的信息。
In addition to the audit log view, process choreographer defines a couple of other views that have current run time information, for example, about processes, activities, or events.
除了审核日志视图,流程编排器定义了两个其它的具有当前运行时信息的视图,例如,带有关于流程、活动或者事件的信息。
The catalog cache is used to store table descriptor information that is used when the tables, views, or alias have been referenced in previous statements.
目录缓存器用于存储表描述符信息,而在先前的语句中引用表、视图或别名时将使用该信息。
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