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Q02: (10 Points) Consider the following relation: R= {ID, Name, Department, Salary} with the following dependencies {ID} {Name} {ID} {Department} {Department} {Salary} Suppose that two
Q02: (10 Points) Consider the following relation: R= {ID, Name, Department, Salary} with the following dependencies {ID} {Name} {ID} {Department} {Department} {Salary} Suppose that two database designers decomposed the relation R in two ways as the following: Designer 1 Designer 2 R1={ID, Name, Department} {ID} {Name} {ID} {Department} R1={ID, Name, Department} {ID} {Name} {ID} = {Department} R2={Department, Salary} {Department}={Salary} R2={ID, Salary} {ID}={Salary} Based on the lossless-join decomposition and dependency preserving checks, find which of the above decompositions is better
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