单项选择题
A.Perform point-in-time recovery to 2： 00 p.m.
B.Use Flashback Table feature to revert the changes.
C.Restore the entire database from the recent backup and open it.
D.Issue the rollback statement with system change number （SCN）.
单项选择题 YourtestdatabaseisrunninginNOARCHIVELOGmode.Whataretheimplicationsofthis？（）
单项选择题 TheSAVE_AMTcolumnintheACCOUNTStablecontainsthebalancedetailsofcustomersinabank.Aspartoftheyear-endtaxandinterestcalculationprocess，alltherowsinthetableneedtobeaccessed.Thebankauthoritieswanttotrackaccesstotherowscontainingbalanceamountsexceeding$200，000，andthensendanalertmessagetotheadministrator.Whichmethodwouldyousuggesttothebankforachievingthistask？（）
单项选择题 YouareusingthebackupschedulerinEnterpriseManager（EM）toscheduleabackupofyourdatabase.Whichtypeofscriptdoesthebackupschedulergenerate？（）