ndthosefaketuplesinT1candT2cthatmustjoinwithatleastonerealtupleandhenceappearintheresultofcase2orcase3 LetAbethesetofjoinattributes Letr Aopt Adenotethejoinpredicates LetC2andC3denotethejoinresultsincase2and3respectively We rstobtainthesetoffaketuplesRandusethecorrespondingauditingrulesbelowtocheckwhether...