By using the QRYSLT parameter, when launching a DBUnifier Application, you can limit the data in a DB2/400 file that is processed. The QRYSLT parameter is modeled after the OPNQRYF Query Select statement. We determined it would be easier for programmers to construct a Query Select within high level language, than trying to build an SQL Select statement. (QRYSLT utilizes double quotes to define an alpha value, and SQL Select utilizes single quotes).