{HEAD ~ The retrieval} of data from a database in {TAIL ~ a computerized database management system} is optimized through the use of a plurality of join indexed 
{ HEAD ~ The retrieval } of data from a database in { TAIL ~ a computerized database management system } is optimized through the use of a plurality of join indexed
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH