Какова цель наличия методов Up и Down в процессе миграции базы данных?

The Up and Down methods in database migrations are used to manage schema changes:

• Up — describes the steps applied to update the database to a new version (e.g., creating tables, adding columns, changing indexes).
• Down — describes the reverse actions, allowing the migration to be rolled back and the database to be returned to its previous state.

This is important for database version control, enabling safe application and rollback of changes, especially during development and deployment. For example, if a new migration causes errors, you can quickly revert the changes using the Down method.