单项选择题
A. An SCN is never used to perform a Flashback Table recovery.
B. If a significant number of changes have been made to the table， row movement must be enabled.
C. The tablespace must be offline before performing a Flashback Table recovery.
D. Flashback Table recovery is completely dependent on the availability of undo data in the undo tablespace.
单项选择题 WhichofthefollowingstatementsistrueregardingtheVERSIONSBETWEENclause？（）
单项选择题 At the request of a user， you issue the following command to restore a dropped table： flashback table "BIN$F2JFfMq8Q5unbC0ceE9eJg==$0" to before drop； Later， the user notifies you that the data in the table seems to be very old and out of date. What might be the problem？（）
多项选择题 WhichofthefollowingcanbeusedinconjunctionwithaFlashbackVersionsQuerytofiltertheresults？（）