migrations

Add the class to the models.py file eg:

class Item(models.Model):
      item_name = models.CharField(max_length=200)
      item_desc = models.CharField(max_length=200)
      item_price = models.IntegerField()

Make the migrations:

python3 manage.py makemigrations appName

See what is actually to be added to the database:

# 0001 you get from the make the migrations command that you ran above
python3 manage.py sqlmigrate appName 0001

Commit the changes to the database:

python3 manage.py migrate