Description: Active Record migration is a fundamental feature in Ruby on Rails that allows developers to manage and evolve the database schema of their applications in a controlled and systematic manner. Through migrations, tables and columns in the database can be created, modified, and deleted without the need to interact directly with the database management system. This is achieved by writing migration files in Ruby that describe the changes to be made. Migrations are especially useful in collaborative development environments, as they allow all team members to apply the same changes to their local databases easily and consistently. Additionally, migrations can be rolled back, providing an extra layer of security and flexibility when making schema changes. The ability to version the database schema is crucial for maintaining data integrity and facilitating the deployment of new features in applications. In summary, Active Record migration is a powerful tool that simplifies database management in web applications, allowing developers to focus on business logic without worrying about the technical details of the database.
