#--                 YYYYMMDD  
     #-- Key example:    BirthDate|LastNameFirst4Chars|FirstNameInitial|StateCode
     #--                            "19591219|Will|K|TX"
     #-- $KEY without a Seq Nbr is used to increment the number of records saved to the database
     #-- having a particular ALT KEY w/DUPS - in this example:   "19591219|Will|K|TX"

     $KEY=$BirthDate . "|" . $LastNameFirst4Chars . "|" . $FirstNameInitial . "|" . $StateCode;
     $Hash{$KEY}=0;

     #-- Now index the first record encountered in the Flat File database with this particular ALT KEY w/DUPS 
     $num_recs = $Hash{$KEY};
     $num_recs++;   #-- i.e. one(1)
     $Hash{$KEY}=$num_recs;
     $newKEY=$KEY . "|" . $num_recs;
     #-- produces:   "19591219|Will|K|TX|1"
     $Hash{$newKEY}=   #-- The VALUE would be set to the byte offset of the Flat File record just indexed 

     #-- Now index the second record encountered in the Flat File database with this particular ALT KEY w/DUPS 
     $num_recs = $Hash{$KEY};
     $num_recs++;   #-- i.e. two(2)
     $Hash{$KEY}=$num_recs;
     $newKEY=$KEY . "|" . $num_recs;
     #-- produces:   "19591219|Will|K|TX|2"
     $Hash{$newKEY}=   #-- The VALUE would be set to the byte offset of the Flat File record just indexed 

     #-- and so on...