YouworkasadatabaseadministratorforCertkiller.com.Yoususpectthatinoneofyourapplicationsthecustomertableisbeingaccessedbysomeunauthorizedusers.Whichoptionwouldyouusetomonitorthequeriesbeingexecutedonthecustomertable？（）
A. Monitorthealert.logfile
B. Enableserver-sideSQLtracingforusersessions
C. Enablefine-grainedauditingforthecustomertable
D. EnableFine-GrainedAccessControl（FGAC）forthecustomertable
E. WriteadatabasetriggeronthecustomertableontheSELECTevent
WhichstatementistrueregardingFlashbackVersionQuery？（）
A. Itreturnsversionsofrowsonlywithinatransaction.
B. ItcanbeusedinsubqueriescontainedonlyinaSELECTstatement.
C. ItwillreturnanerroriftheundoretentiontimeislessthanthelowerboundtimeorSCNspecified.
D. Itretrievesallversionsincludingthedeletedaswellassubsequentlyreinsertedversionsoftherows.
科学共同体是指（）
A. 某一领域科学研究的共同问题
B. 某一历史时期科学研究的共同范式
C. 某一领域有共同研究范式的科学家集团
D. 科学研究与应用一体化机制
Aredologfileiscorruptedwhilethedatabaseisopen；asaconsequence，databaseoperationsarestoppedbecausearchivingcannotcontinue.Whatwouldyoudotosolvetheproblem？（）
A. cleartheredologgroup
B. performredologfileimport
C. performanincompleterecovery
D. performaredologrecoveryusingRecoveryManager（RMAN）
E. shutdownthedatabaseandopenthedatabaseintheNOARCHIVELOGmode
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