• https://docs.djangoproject.com/en/3.2/topics/db/multi-db/#synchronizing-your-databases

  DATABASES = {
      'default': {},
      'users': {
          'NAME': 'user_data',
          'ENGINE': 'django.db.backends.mysql',
          'USER': 'mysql_user',
          'PASSWORD': 'superS3cret'
      },
      'customers': {
          'NAME': 'customer_data',
          'ENGINE': 'django.db.backends.mysql',
          'USER': 'mysql_cust',
          'PASSWORD': 'veryPriv@ate'
      }
  }

https://web.archive.org/web/20220525080151/https://realpython.com/django-migrations-a-primer/