What are Sequelize migrations and how do I use them?

What are Sequelize migrations and how do I use them?

Sequelize migrations are a way to manage changes to your database schema over time. They allow you to create, modify, and delete tables and columns in a structured manner.

How do I create a new migration in Sequelize?

You can create a new migration using the Sequelize CLI. Run the command npx sequelize-cli migration:generate --name migration_name to generate a new migration file.

What should I include in the migration file?

In the migration file, you should define the up and down methods. The up method describes the changes to apply, while the down method describes how to revert those changes.

Can I run multiple migrations at once?

Yes, you can run all pending migrations at once by using the command npx sequelize-cli db:migrate. This will apply all migrations that haven't been run yet.