The core activities in systems development are system analysis, system design, programming, testing, conversion, and production and maintenance. Systems analysis is the study and analysis of problems of existing systems and the identification of requirements for their Figure 1. The systems...

The development and use of intelligent systems within economic entities allow managers to use stored knowledge to solve complex problems within the entity and to take strategic decisions. Nowadays, the multitude of networks such as Internet, Intranet, Extranet and of other telecommunication...