Question: Only answer 10.21 =) Consider the relation schema EMP_DEPT in Figure 15.3 (a) and the following set G of functional dependencies on EMP_DEPT: G={San rightarrow

Only answer 10.21 =) Consider the relation schema EMP_DEPT in Figure

Only answer 10.21 =)

Consider the relation schema EMP_DEPT in Figure 15.3 (a) and the following set G of functional dependencies on EMP_DEPT: G={San rightarrow {Ename, Bdate, Address, Dnumber}, Dnumber rightarrow {Dname, Dmgr_ssn}}. Calculate the closures {Ssn}^+ and {Dnumber}^+ with respect to G. Is the set of functional dependencies G in Exercise 10.20 minimal? If not, try to find a minimal set of functional dependencies that is equivalent o G. Prove that your set is equivalent to G. Two relation schemas suffering from update anomalies

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