Identifying Types of Extra-Functional Requirements in the Context of Business Process Suppo.pdf

Identifying Types of Extra-Functional Requirements in the Context of Business Process Support Systems Elke Hochmüller1, Michael Dobrovnik2 1 Carinthia Tech Institute, Department of Telematics / Network Engineering, Primoschgasse 8, A-9020 Klagenfurt, Austria E.Hochmueller@cti.ac.at 2 Groiss Informatics, Strutzmannstra?e 10, A-9020 Klagenfurt, Austria michi@ Abstract. Extra-functional requirements are known as critical success factors in traditional software engineering. While business process support systems and classical domain-specific application systems differ from the product point of view as well as from the perspectives of development and institutionalisation processes, the relevance of extra-functional requirements will even increase in case of BPS systems because of the tight relationship of such systems with the structures, responsibilities, and processes within an enterprise. This discussion paper aims at the identification of general types of extra-functional require- ments which are most prominent in BPS systems. 1 Introduction Business Process Support systems differ substantially from traditional domain- specific application systems. Requirements Engineering for conventional application systems includes tasks like information acquisition from different users with different viewpoints leading to an integrated conceptual static model and a model of the re- quired system dynamics which have to be validated against the users’ needs (elicita- tion, specification, validation) [1]. BPS systems require a broader perspective. Analy- sis for BPS systems include the analysis of the organisation structure, responsibilities, working practices, task structures, inputs and outputs of existing application systems, document traces and flows of data. In traditional software engineering, improper consideration or treatment of extra- functional requirements caused projects to fail even when the delivered systems met all of the functional requireme