How do I perform a database migration in Rails?

How do I perform a database migration in Rails?

To perform a database migration in Rails, you can use the command rails generate migration MigrationName to create a new migration file.

What should I include in the migration file?

In the migration file, you should define the changes you want to make to the database schema, such as adding or removing columns.

How do I run the migration after creating it?

You can run the migration using the command rails db:migrate, which will apply the changes to your database.

What if I need to roll back a migration?

To roll back a migration, you can use the command rails db:rollback, which will undo the last migration.