What are Rails database migrations?

What are Rails database migrations?

Rails database migrations are a way to manage changes to your database schema over time. They allow you to create, modify, and delete database tables and columns in a structured manner.

How do I create a new migration in Rails?

You can create a new migration in Rails by running the command rails generate migration MigrationName. Replace MigrationName with a descriptive name for your migration.

Can I roll back a migration?

Yes, you can roll back a migration using the command rails db:rollback. This will undo the last migration that was run.

What if I want to apply multiple migrations at once?

You can apply multiple migrations at once by running rails db:migrate without specifying a version. This will run all pending migrations.