Think of your database in terms of code version control. You want to track the changes that are made to it, adding a column could be a migration, renaming a co

Think of your database in terms of code version control. You want to track the changes that are made to it, adding a column could be a migration, renaming a column could be another. A migration enables you to track the changes you made and possibly rollback to previous migrations (database states) if ever required.