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