Some of my models are store in a dedicated database and using : in settings.py : ``` DATABASES = { 'default': { 'ENGINE': 'django.db.backends.sqlite3', 'NAME': BASE_DIR / 'db.sqlite3', }, 'catalog': { 'ENGINE': 'django.contrib.gis.db.backends.postgis', ... 'PORT': '5432', } ``` in models.py : ``` class Meta: managed = False db_table = '__mytable' ``` and in my modelAdmin classes : `using = 'catalog'` makes an exception : `no such table: __mytable`