Suspending an application monitor with the cluster running will have what effect on the application？（）
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Giventhefollowingtwotables: TAB1R1 AAABBCCDETAB2R2 AABBCCD Whichofthefollowingqueriesreturnsthefollowingresultset?RETVALE（）
A. SELECTr1ASretvalFROMtab1INTERSECTSELECTr2ASretvalFROMtab2
B. SELECTr1ASretvalFROMtab1EXCEPTSELECTr2ASretvalFROMtab2
C. SELECTDISTINCTr1ASretvalFROMtab1,tab2WHEREr1<>r2
D. SELECTr1ASretvalFROMtab1UNIONSELECTr2ASretvalFROMtab2
WhendefiningareferentialconstraintbetweentheparenttableT2andthedependenttableT1,whichofthefollowingistrue?（）
A. ThelistofcolumnnamesintheFOREIGNKEYclausecanbeasubsetofthelistofcolumnnamesintheprimarykeyofT2oraUNIQUEconstraintthatexistsonT2.
B. ThelistofcolumnnamesintheFOREIGNKEYclausecanbeasubsetofthelistofcolumnnamesintheprimarykeyofT1oraUNIQUEconstraintthatexistsonT1.
C. ThelistofcolumnnamesintheFOREIGNKEYclausemustbeidenticaltothelistofcolumnnamesintheprimarykeyofT2oraUNIQUEconstraintthatexistsonT2.
D. ThelistofcolumnnamesintheFOREIGNKEYclausemustbeidenticaltothelistofcolumnnamesintheprimarykeyofT1oraUNIQUEconstraintthatexistsonT1.
生意人指的是（）
A. 企业家
B. 售货员
C. 商贩
YouissuedthefollowingcommandstoconfiguresettinginRMAN; Thenyouissuedthefollowingcommandtotakethebackup: RMAN>BACKUPDATABASEPLUSARCHIVELOG; Whichstatementistrueabouttheexecutionoftheabovecommand?（）
A. ThebackupwillterminatebecausetheFORMATclausewasnotconfiguredforthechannel
B. Itbacksuptwocopiesofdatafilestotapeanddisk,andtwocopiesofarchivedlogfileontape
C. Itbacksupthedatafilesandarchivedlogfilestodisk,makingtwocopiesofeachdatafileandarchivedlogfile
D. Itbacksupthedatafilesandarchivedlogfilestotape,makingtwocopiesofeachdatafileandarchivedlogfile
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