# Relational Difference

The tuples present in the first compatible relation but absent from the second.

## What is **Relational Difference** in a relational database?

**Relational Difference** — The tuples present in the first compatible relation but absent from the second.

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/relational-difference