You can run some processes when datastore is accessed.
If you are unfamiliar with DB hook, you should set this to ``False``.
The default is ``False``.
+Designating the settings
+You can tell Kay which settings to use by using an environmental variable named
+The value of KAY_SETTINGS_MODULE should be in Python path syntax, e.g. settings_package.dev_settings.
+Note that the settings module should be on the Python `import search path`_.
+.. _import search path: http://diveintopython.org/getting_to_know_python/everything_is_an_object.html
+Example (Unix Bash shell)::
+ export KAY_SETTINGS_MODULE=settings_package.dev_settings
+ python manage.py runserver