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多选题What are three purposes of the RMAN “FROM” clause?（）Ato support PUSH-based active database duplicationBto support synchronization of a standby database with the primary database in a Data environmentCTo support PULL-based active database duplicationDTo
题目
多选题
What are three purposes of the RMAN “FROM” clause?（）
A
to support PUSH-based active database duplication
B
to support synchronization of a standby database with the primary database in a Data environment
C
To support PULL-based active database duplication
D
To support file restores over the network in a Data Guard environment
E
To support file recovery over the network in a Data Guard environment