def _can_introspect_foreign_keys(self):
        # Every database can do this reliably, except MySQL,
        # which can't do it for MyISAM tables
        return True
Confirm support for introspected foreign keys
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/db/backends/__init__.py/BaseDatabaseFeatures._can_introspect_foreign_keys