It depends on how old an application you are looking at. There was a database called proFile on the Tandy 16 and 6000 series computers and later for Tandy Xenix on the T2000 or T3000 (80386) Systems. It was also sold seperately as FilePro and was a Relational database that had applications with the following names:
clerk, report, cabe, menu, moedef, etc.
dclerk, dreport, dcabe, dmenu, dmoedef, etc.
rclerk, rreport, rcabe, rmenu, rmoedef, etc.
It used a series of *If Then *statements for porcessing information in the database.
If this is what you need information on I have most of the manuals boxed up in the shed along with my MS-DOS manuals...