Determine the objective of a query simplifier describe the

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Question 1: What is the objective of a query simplifier? What are the idempotence rules used by query simplifier? Give an example to explain the concept.

Question 2: What are query transformation rules?

Question 3: Discuss the rules for transformation of query trees and identify when each rule should be applied during optimization.

Question 4: Discuss the main cost components for a cost function that is used to estimate query execution cost.

Question 5: What cost components are used most often as the basis for cost functions?

Reference no: EM13463265

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