# Key

One or more attributes used to identify rows or connect related relations.

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

**Key** — One or more attributes used to identify rows or connect related relations.

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

Updated: September 28, 2026

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