Question
Which option best describes the use of cost-based optimization in a database system?
Correct Answer: D
query plans are compared using estimated costs such as I/O, CPU, and cardinality
cost-based optimization is used in Advanced DBMS because query plans are compared using estimated costs such as I/O, CPU, and cardinality.
cost-based optimization is used in Advanced DBMS because query plans are compared using estimated costs such as I/O, CPU, and cardinality.
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