Q:Question:how many super keys are possible for student? 7) Which among the following is a trivial functional dependency? [ A B ? B C; A B ? C D; A ? B; A B ? B ] 8) Consider a relation R(A, B, C, D) with the following functional dependencies: 3 points ?=A ? C, A B ? C D Choose the attribute(s) that are extraneous to any of the functional dependencies in ? A B C DA:Answer:See a step by step answer