Automatic query optimization means that the:
A) optimization takes place at compilation time by the programmer.
B) DBMS finds the most cost-effective access path without user intervention.
C) optimization process is scheduled and selected by the end user or programmer.
D) database access strategy is defined when the program is executed.

Question

Quizplus · Accepted Answer

Automatic query optimization refers to the process where the DBMS finds the most cost-effective access path without user intervention. This is done by analyzing the query and selecting the most efficient execution plan based on factors such as index usage, join order, and available resources. It differs from optimization at compilation time (A) or execution time (D), as the process is automated and does not require user intervention or programming skills. Finally, optimization scheduling (C) is not the same as automatic optimization, as it involves user intervention to set the optimization parameters and schedule the optimization process.

Automatic Query Optimization Means That The