Question: Exercise 3.5.3: Consider a relation Stocks(B , O, I, S, Q, D), whose attributes may be thought of informally as broker, office (of the broker),

Exercise 3.5.3: Consider a relation Stocks(B , O, I, S, Q, D), whose attributes may be thought of informally as broker, office (of the broker), investor, stock, quantity (of the stock owned by the investor), and dividend (of the stock). Let the set of FDs for Stocks be: S > D I > B I S > Q B > O a) What are all the keys for Stocks? b) Verify that the given FDs are their own minimal basis. c) Use the 3NF synthesis algorithm to find a lossless-join, dependency-preserving decomposition of R into 3NF relations. Are any of the relations not in BCNF?

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