27、Which two are true about data dictionary views?

A) ALL or USER prefixed views display output that are subsets of the output from the DBA prefixed data views.

B) DBA prefixed views are accessible when a database is In mount state.

C) A user may not necessarily be the owner of all objects that can be viewed by using the ALL prefixed views.

D) A user can query the DBA prefixed views only if they have the SYSDBA privilege

E) All data dictionary views are prefixed with DBA. Or ALL or USER

Answer:AD

北京CUUG整理，转载请注明，OCP讨论群：569933648/836361015