Choose three. Which three are true about the FLASHBACK DATABASE

Feature?

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Choose three. Which three are true about the FLASHBACK DATABASE

Feature?

A.FLASHBACK DATABASE only uses FLASHBACK LOGS to get the database to
The desired flashback time. B.It requires that the target database be in ARCHIVELOG mode. C.FLASHBACK LOGS are archived after a log switch. D.A database can be flashed back using SQL*PLUS. E.It always generates REDO and UNDO. F.Queries and DML have the same FLASHBACK LOG overhead when flashback is
Enabled for a database.
正确答案BDE
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