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ExaminethefollowingstatementthatisusedtomodifytheconstraintontheSALEStable:SQL>ALTERTABLESALESMODIFYCONSTRAINTpkDISABLEVALIDATE;Whichthreestatementsaretrueregardingtheabovecommand()
A.Theconstraintremainsvalid.
B.Theindexontheconstraintisdropped.
C.ItallowstheloadingofdataintothetableusingSQL*Loader.
D.Newdataconformstotheconstraint，butexistingdataisnotchecked
E.ItallowsthedatamanipulationonthetableusingINSERT/UPDATE/DELETESQLstatements.
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更多 “ ExaminethefollowingstatementthatisusedtomodifytheconstraintontheSALEStable:SQLALTERTABLESALESMODIFYCONSTRAINTpkDISABLEVALIDATE;Whichthreestatementsaretrueregardingtheabovecommand() A.Theconstraintremainsvalid.B.Theindexontheconstraintisdropped.C.ItallowstheloadingofdataintothetableusingSQL*Loader.D.Newdataconformstotheconstraint，butexistingdataisnotcheckedE.ItallowsthedatamanipulationonthetableusingINSERT/UPDATE/DELETESQLstatements. ” 相关考题
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ExaminethefollowingstatementthatisusedtomodifytheprimarykeyconstraintontheSALEStable:SQLALTERTABLESALESMODIFYCONSTRAINTpkDISABLEVALIDATE;Whichthreestatementsaretrueregardingtheabovecommand()
A.Theconstraintremainsvalid.B.Theindexontheconstraintisdropped.C.ItallowstheloadingofdataintothetableusingSQL*Loader.D.Newdataconformstotheconstraint，butexistingdataisnotchecked.E.ItallowsthedatamanipulationonthetableusingINSERT/UPDATE/DELETESQLstatements.
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