Structuring of business rules in information system design and architecture

The approach to business rules introduces a new layer of business rules to the Information System design and architecture. As the rules are separated from the data and presentation aspects of the system, numerous changes have to be applied to the traditional process of information system development. Proper structuring of business rules becomes crucial. OST of the currently used information systems consist of two basic layers data management and presentation (end-user). During the development of those systems, business rules are not treated differently t hey are used in various process data and models. The rules are not presented as separate entities during the development phase or their presentation is not sufficient fo r efficient evaluation of the results of a certain designing phase. Finally, the rules become spread to several locatons. The expenses of accepting such systems in variable business conditions are usually very high, while the changing process is very slow. There are currently a few techniques and tools which are available and used for partial process automa- tisation of the presentation of new integrity limits in the f unction system, but in terms of system development, such techniques are useless. Nevertheless, develop- ment of the traditional information system is very well-exa mined, there is a good choice of methodologies and tools for all phases of the development, especially implementation.