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Which three statements are true about Flashback Database?（）
A:Flashback logs are written sequentially, and are archived.
B:Flashback Database uses a restored control file to recover a database.
C:The Oracle database automatically creates, deletes, and resides flashback logs in the Fast Recovery Area.
D:Flashback Database can recover a database to the state that it was in before a reset logs operation.
E:Flashback Database can recover a data file that was dropped during the span of time of the flashback.
F:Flashback logs are used to restore to the blocks' before images, and then the redo data may be used to roll forward to the desired flashback time.

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出自：Oracle认证

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