{TAIL ~ A computerized database management system} for optimizing retrieval of {HEAD ~ data} from a database, comprising: 
{ TAIL ~ A computerized database management system } for optimizing retrieval of { HEAD ~ data } from a database , comprising :
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH