# Consistency

The property that a successful transaction preserves declared database rules.

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

**Consistency** — The property that a successful transaction preserves declared database rules.

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/consistency