Various definitions illustrate that marketing information system has a few critical aspects;

• First of all, as a system it comprises principles, processes, methods, people and necessary instruments for collecting, analyzing and storing information;
• Moreover, it is a planned and systematic effort for meeting the marketing information needs;
• Furthermore, it is a continuous effort. Continuity means that the system provides the information required for the marketing decisions not based on discrete research attempts but on the basis of regular and continuous information generation.11