# Selection (Relational Algebra)

The relational operation that keeps tuples satisfying a predicate.

## What is **Selection (Relational Algebra)** in a relational database?

**Selection (Relational Algebra)** — The relational operation that keeps tuples satisfying a predicate.

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

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/selection-relational-algebra