What Is Cost-based Approach To Optimization ?
Answers
Answered by
0
here's your answer mate....
The optimizer chooses between a cost-based approach and a rule-based approach, depending on whether statistics are available. ... If the data dictionary contains statistics for at least one of the accessed tables, then the optimizer uses a cost-based approach and optimizes with a goal of best throughput.
hope it helps you
mark as brainliest
Similar questions