What is the purpose of defining 'up' and 'down' methods in a database migration?
- To define the desired state of the database schema
- To define the initial state of the database schema
- To define the rollback operation for the migration
- To define the state of the database schema after migration
The purpose of defining 'up' and 'down' methods in a database migration is to specify both the forward and backward steps of the migration process. The 'up' method defines the changes to be applied to the database schema, while the 'down' method specifies how to revert those changes in case of a rollback. This ensures that migrations can be applied and reverted safely, maintaining the integrity of the database schema throughout the development process.
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