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1- (1 pt) Explain difference between Location transparency and Naming transparency? 2- (1pt) Why In a distributed database system, relational algebra is not enough to

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1- (1 pt) Explain difference between Location transparency and Naming transparency? 2- (1pt) Why In a distributed database system, relational algebra is not enough to express the best execution strategies of queries? 3- (1 pt) One way to minimize a cost function is to used the cost model approach. In that approach we can calculate the total cost and the response time cost. Define each of them? 4- (2pt) In the query processing methodology, explain the role of each layer: a. QUERY DECOMPOSTION. b. DATA LOCALIZATION. c. DISTRIBUTED OPTIMAZTION. d. DISTRIBUTED EXECUTION

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