多选题Which three statements are true about Flashback Database?（）AFlashback logs are written sequentially, and are archived.BFlashback Database uses a restored control file to recover a database.CThe Oracle database automatically creates, deletes, and resides flashback logs in the Fast RecoveryArea.DFlashback Database can recover a database to the state that it was in before a reset logs operation.EFlashback Database can recover a data file that was dropped during the span of time of the flashback.FFlashback 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.
多选题
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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