DEMO, business process, BDD

Reengineering of legacy systems is one of trickiest challenges in software development. The paper addresses methodologies applicable to re-engineering legacy information systems. Specifically, it points out a possibility to couple ontological descriptions of the enterprise with information systems features. Such interconnection verifies whether a functionality implemented in the information system relates to business tasks or not. Business processes formulated as DEMO transaction patterns together with Behavior-Driven Development technique enable to link existing businesses processes to production codebase.