Accordingly, {HEAD ~ each database} can compare their respective benefit data with {TAIL ~ the benefit data} of the neediest database on the system 
Accordingly , { HEAD ~ each database } can compare their respective benefit data with { TAIL ~ the benefit data } of the neediest database on the system
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH