Modelling Off-the-Shelf Information Systems Requirements: An Ontological Approach |
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Authors: | Pnina Soffer Boaz Golany Dov Dori Yair Wand |
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Affiliation: | (1) Technion – Israel Institute of Technology, Haifa, Israel, IL;(2) Massachusetts Institute of Technology, Cambridge, Massachusetts, USA, US;(3) University of British Colombia, Vancouver, Canada, CA |
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Abstract: | Requirements for choosing off-the-shelf information systems (OISR) differ from requirements for development of new information
systems in that they do not necessarily provide complete specifications, thus allowing flexibility in matching an existing
IS to the stated needs. We present a framework for OISR conceptual models that consists of four essential elements: business
processes, business rules, information objects and required system services. We formalise the definitions of these concepts
based on an ontological model. The ontology-based OISR model provides a framework to evaluate modelling languages on how appropriate
they are for OISR requirements specifications. The evaluation framework is applied to the Object-Process Methodology, and
its results are compared with a similar evaluation of ARIS. This comparison demonstrates the effectiveness of the ontological
framework for evaluating modelling tools on how well they can guide selection, implementation and integration of purchased
software packages. |
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Keywords: | :Conceptual model – Object-Process Methodology – Off-the-shelf information systems – Ontology – Requirements specification |
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