# Lossless Decomposition

Splitting a relation so joining the parts recreates exactly the original relation.

## What is **Lossless Decomposition** in a relational database?

**Lossless Decomposition** — Splitting a relation so joining the parts recreates exactly the original relation.

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/lossless-decomposition