This MBA study provides an overview of the marketing information systems that exist in most of the organizations. It outlines what actually marketing systems are, what is the purpose behind having an information system in an organization, what type of marketing information system must exist in an organization, why organizations need marketing in formation systems, what type of general purpose softwares can be used to enhance the effectiveness of marketing information system and what types of costs are associated with using the information systems in an organization. This study will be a valuable contribution to the future study contributions in this field