Rails Migration is a feature in Ruby on Rails that allows developers to manage changes to the database schema over time. It provides a way to create, modify, and roll back database tables, columns, and indexes using Ruby code instead of writing raw SQL statements.
Here are some key points about Rails Migration:
Versioning: Each migration is versioned with a timestamp, which allows Rails to keep track of the order in which migrations should be applied or rolled back.
Up and Down Methods: Each migration has two methods: up and down. The up method defines the changes to be made to the database schema, while the down method defines how to revert those changes.
Consistency: Migrations ensure that changes to the database schema are consistent across all environments (e.g., development, staging, production) by applying the same set of migrations to each environment.
Rollback: If a migration introduces a bug or needs to be reverted for any reason, Rails allows you to roll back the migration to the previous state using the rollback ...
