Removed stub code and added proper implementation routine for accessing datastore and refined function api formats
Removed stub code and added proper implementation routine for accessing datastore and refined function api formats

UofM-COMP4350-4/NBGI,UofM-COMP4350-4/NBGI,UofM-COMP4350-4/NBGI,UofM-COMP4350-4/NBGI,UofM-COMP4350-4/NBGI,UofM-COMP4350-4/NBGI