What are migrations in Node.js and how do I use them?

What are migrations in Node.js and how do I use them?

Migrations in Node.js are scripts that help manage changes to your database schema over time. They allow you to version control your database changes.

How do I create a migration file?

You can create a migration file using a migration tool like Sequelize or Knex. For example, with Sequelize, you can run sequelize migration:create --name migration_name.

Can I roll back a migration?

Yes, you can roll back a migration using the command sequelize db:migrate:undo for Sequelize or knex migrate:rollback for Knex.

What if I want to run multiple migrations at once?

You can run multiple migrations by simply executing the migration command without specifying a single migration file. The tool will apply all pending migrations.