# Second Normal Form (2NF)

First normal form with no non-key attribute dependent on only part of a candidate key.

## What is **Second Normal Form (2NF)** in a relational database?

**Second Normal Form (2NF)** — First normal form with no non-key attribute dependent on only part of a candidate key.

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/second-normal-form-2nf