Improving the life cycle of information systems for small and medium business

The article represents an analysis of main integrative approaches, extended technologies and several possible techniques, which enable a detection of a range of problems in the area of establishment of the life cycle of information systems for small and medium-sized business. The central aspects touched upon are design of information systems, their orientation, which was established as the result of development of the current informational sphere. Moreover, the article dwells on the methodological problems of IS construction, outlines future development of present-day and advanced tendencies of IT development in small and middle-sized business. An important role in design of an information system is assigned to an efficient conceptual model. The methodology represented herein is based upon an iterated spiral model of the life cycle of an information system. The essential feature of this model is the following: embracing all stages of the life cycle of the information system it puts a focus on support of the initial stages of designing of the information system; these stages carry the main task of developing the demands to the IS, which should exactly correspond the tasks and objectives of the organization. Design of the information system amounts to establishment and gradual transformation of consistent models at all the stages of the life cycle. The character of the processes performed and work management in the represented model of the life cycle are based on the informational engineering approach. Implementation of the represented technique is based mainly upon a body of coordinate management tools, which provide an advanced automation level of all processes performed in accordance with the techniques during the whole life cycle of the information system