Youareworkingonanonlinetransactionprocessing（OLTP）system.YounoticethataPL/SQLproceduregotexecutedtwiceat2）00p.m.ThishasincorrectlyupdatedtheEMP_SALtable.Howwouldyourevertthetabletoitsstateat2）00p.m.？（）
A.Performpoint-in-timerecoveryto2：00p.m.
B.UseFlashbackTablefeaturetorevertthechanges.
C.Restoretheentiredatabasefromtherecentbackupandopenit.
D.Issuetherollbackstatementwithsystemchangenumber（SCN）.
正确答案：参考B
