# Query Optimizer

The RDBMS component that chooses a physical strategy for executing a query.

## What is **Query Optimizer** in a relational database?

**Query Optimizer** — The RDBMS component that chooses a physical strategy for executing a query.

Level: Freelancer · [More Database terms at this level](https://www.ask-codey.com/glossary/subjects/database/freelancer)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/query-optimizer