问题:
A . Oracle Flashback uses undo information to construct consistent data.
B . You can use a cursor opened while using an Oracle Flashback image to perform DML once you deactivate Oracle Flashback in your session.
C . You can only use Oracle Flashback view of the data if the required records are still in the online redo log files.
D . Oracle Flashback lists the DML that was executed during the period you identify when initiating your session.&e
● 参考解析
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