Stages of Information System Development in the Process Approach

The paper is dedicated to the description of problems that occur during the functional modelling of MES (manufacturing execution system) class information systems. It was determined that the most significant problem is the lack of the universality of information systems. According to preliminary studies, the universality is achieved by using a process approach during design. Thus, it requires the improvement of the design process. To solve this issue, specifics were discussed to apply different approaches to the design of information systems at the lowest level. It helped to make a conclusion about the correct choice for the design approach. During functional modelling, the emphasis was on networked information systems with complete or partial virtualization. For this task, a model of the information system was built according to features of service-oriented architecture. At the stage of selecting CASE-tools, the accent was on the use of WEB-oriented tools. These steps led to the unification of the design and implementation of MES class information systems, and it will increase the universality of the developed information systems.