1. Introduction
The information systems concept has been around for many years. The importance of information technology
in marketing was presented with a marketing information systems model by P. Kotler. According to this model,
there are four major sub-systems (Sääksjärvi, M. V.T. and Talvinen, J. M. 1993) an internal records system, a
marketing research system, a marketing intelligence system and a marketing decision support system.