# Update Anomaly

A design problem where repeated copies of one fact can become inconsistent during an update.

## What is **Update Anomaly** in a relational database?

**Update Anomaly** — A design problem where repeated copies of one fact can become inconsistent during an update.

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

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/update-anomaly