The ISP version of SICStus Prolog is an advanced Prolog system which can be used in a large variety of applications. Prolog, however, has not been very widely used in data-intensive MIS, management information systems, applications which are centered around one or more databases. In this document, a (possible) relationship between MIS applications and SICStus Prolog is investigated. In the course of the investigation, a sample application has been developed. It is a running prototype of a decision support system for fault analysis in digital (AXE) switching systems. A major point in the document is a set of "guidelines" for SICStus Prolog and MIS applications. These points describe a few hints on when SICStus Prolog can or should be used in MIS applications, as well as when SICStus Prolog should not be used.