Migrations

Lesson in the Ruby on Rails Roadmap · Stage 8: Databases

Last updated 14 September 2026

What is Migrations?

Migrations are a way to evolve your database schema over time in a consistent and manageable way. They are Ruby files that define changes to your database structure, such as creating tables, adding columns, or modifying indexes. These files allow you to track and apply changes to your database schema, making it easy to collaborate with other developers and deploy your application to different environments.

Study this in the interactive course See the whole Ruby on Rails roadmap

Free resources to learn Migrations

Official docsActive Record Migrations
ArticleMigrations
ArticleHow to create Active Record migrations in Ruby on Rails
ArticleA quick guide on database migrations in Ruby on Rails
VideoHow to Use Migrations in Rails (Step-by-Step)

Migrations: common questions

Can I learn Migrations in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Migrations in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Migrations tutorial for beginners?

It is lesson 55 of 98 in the free Ruby on Rails roadmap, in stage 8, Databases. If you are new to Ruby on Rails, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.