https://docs.djangoproject.com/en/3.1/topics/migrations/

You should think of migrations as a version control system for your database schema. makemigrations is responsible for packaging up your model changes into individual migration files - analogous to commits - and migrate is responsible for applying those to your database.

makemigrations: create new migrations based on the changes you have made to your models

example project name: polls

cd into the folder that contains manage.py

This command creates a migration file under migrations. The file name starts with a migration serial number.

    python manage.py makemigrations polls

migrate: apply and unapply migrations

apply the migrations created in previous step

    python manage.py migrate polls 

show migrations

    python manage.py showmigrations polls