# Cardinality

The number of rows in a relation or the allowed counts in a relationship, depending on context.

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

**Cardinality** — The number of rows in a relation or the allowed counts in a relationship, depending on context.

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

Updated: September 27, 2026

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