# Data Definition Language (DDL)

SQL statements that define or change database structures.

## What is **Data Definition Language (DDL)** in a relational database?

**Data Definition Language (DDL)** — SQL statements that define or change database structures.

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

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/data-definition-language-ddl