Which statement is true regarding Flashback Version Query? ()

A .  It returns versions of rows only within a transaction. B .  It can be used in subqueries contained only in a SELECT statement. C .  It will return an error if the undo retention time is less than the lower bound time or SCN specified. D .  It retrieves all versions including the deleted as well as subsequently reinserted versions of the rows.

时间:2022-10-07 22:32:48 所属题库:1Z0-047题库

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