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a) Consider a relation R (AB,C,D) with the following instance: Which of the following finction dependencies are satisfied?,Why or How? 1. A B 2. A CD 3, C-> D b) The SQL like operator is case sensitive, but the lower 0 function on strings can be used to perform case insensitive matching. To show how, write a query that finds departments whose names contain the string "sci" as a substring, regardless of the case