# Domain

A permitted set of values from which an attribute draws its data.

## What is **Domain** in a relational database?

**Domain** — A permitted set of values from which an attribute draws its data.

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

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/domain