# migration (migración)

A tracked step file that creates or updates tables and columns in your database so its structure stays in sync with your code.

**Example:** For example, when you add a `prep_time` field to recipes, your agent creates a migration that adds that column to the `recipes` table.


---
Source: [Agentic Makers](https://agenticmakers.app/en/glossary/migration) · License: CC BY 4.0