小说《九三年》是谁的作品?()
A. 狄更斯
B. 雨果
C. 巴尔扎克
D. 莫泊桑
科学假说之所以具有科学性,是因为()
A. 它是科学家提出来的
B. 它具有一定的科学理论依据
C. 它具有一定的科学事实依据
D. 它具有相对真理性
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.