2.Which three statements are true about Flashback Data Archive?
A.To use Flashback Data Archive, users must have unlimited quota on the Flashback Data Archive tablespace. B.To enable Flashback Data Archive for a table, it is mandatory to have a default Flashback Data Archive for a database. C.While enabling Flashback Data Archive for a table, if no name is provided for Flashback Data Archive, it is enabled using the default Flashback Data Archive. D.A table enabled for Flashback Data Archive cannot be dropped unless Flashback Data Archive is disabled or disassociated first. E.Flashback Data Archive prevents flashback queries from getting a snapshot-too-old error.正确答案CDE
