# Query Processing in PostgreSQL

Query processing is an important aspect of a database system, as it is responsible for managing data retrieval and modification using Structured Query Language (SQL) queries. Efficient query processing is crucial for ensuring optimal database performance.

Learn more from the following resources:

- [@article@Query Processing in PostgreSQL](https://www.interdb.jp/pg/pgsql03.html)
- [@course@Understand PostgreSQL Query Processing - Microsoft](https://learn.microsoft.com/en-us/training/modules/understand-postgresql-query-process/)