During the query optimization process,which phase generates and evaluates access plans and chooses the access plan with the lowest cost?
A) Syntax and semantic analysis
B) Query transformation
C) Access plan evaluation
D) Access plan interpretation
E) Code generation

Question

Quizplus · Accepted Answer

The access plan evaluation phase generates and evaluates access plans for the given query and selects the one with the lowest cost based on the available statistics and cost model. This phase is critical in optimizing the query execution time and is typically done by the query optimizer in the database system. The other phases mentioned in the options are also important in the query optimization process, but access plan evaluation is specifically responsible for choosing the best access plan.

During the Query Optimization Process,which Phase Generates and Evaluates Access