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多項(xiàng)選擇題

The database is running in NOARCHIVELOG mode. A data file is lost. Which two are valid options for recover?()

A.Restore the data file and perform incomplete recovery.
B.Restore the data file and perform point-in-time recover.
C.Drop the tablespace and lose all data in the tablespace.
D.Restore the database and lose all data since the last backup.

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