11A trivial functional dependency is one where:AThe left side is a keyBThere is no left sideCThe right side is NULLDThe right side is a subset of the left sideView AnswerDiscussWorkspaceReportSaveEasy
13If A → B and B → C, then A → C by the rule of:ATransitivityBAugmentationCReflexivityDUnionView AnswerDiscussWorkspaceReportSaveEasy
14If A → B and B → C hold, which dependency follows by Armstrong's axioms?AA → CBB → ACC → BDC → AView AnswerDiscussWorkspaceReportSaveHard
15In R(A, B, C) with key A and dependencies A → B and B → C, R is in:ANot 1NFB2NF but not 3NFCBCNFD3NFView AnswerDiscussWorkspaceReportSaveMedium