The loyalty program instrument may be used to store an index to {TAIL ~ a record} in a database or {HEAD ~ a portable data file} 
The loyalty program instrument may be used to store an index to { TAIL ~ a record } in a database or { HEAD ~ a portable data file }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD