# Projection (Relational Algebra)

The relational operation that keeps selected attributes and removes duplicate tuples.

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

**Projection (Relational Algebra)** — The relational operation that keeps selected attributes and removes duplicate tuples.

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/projection-relational-algebra