Authors:
Tarek Fatyani
1
;
Junichi Iijima
2
and
Jaehyun Park
2
Affiliations:
1
Graduate School of Decision Science and Technology, Tokyo Institute of Technology, Japan
;
2
Tokyo Institute of Technology, Japan
Keyword(s):
Demo model, Enterprise engineering, Requirement engineering, i* (i-Star) framework, Goal modelling.
Abstract:
Information systems development (ISD) has encountered a variety of challenges in terms of identifying the
requirements among multiple stakeholders. This is due to the complexity of the related information.
Therefore, an abstract model of the enterprise is needed to focus on people and their needs before developing
any information system. To respond to this need, new modeling methodologies that focus on modeling the
enterprise as a social system have got a wide acceptance. DEMO and i* are an example of these modeling
methodologies. They focus on modeling the people and the interaction between them. Although DEMO is a
based on strong theories, it is not used much as i* in requirement engineering. Therefore, this research
compares these two modeling methodology in identifying the functional requirements for developing
information system. The comparison is to highlight the strong and the weak part of both modelings. Moreover,
this research draws guidelines for improving both methodologie
s in modeling enterprise as a prior step in
developing information system. As a result, the concept of modeling the interaction between DEMO and i*
is different. DEMO is more formal inmodeling the interaction rather than i*. Moreover, DEMO models both
the structure and the behavior through its different diagrams. But i* does not capture the behavior. In contrast,
i* allows to model the non-functional requirements, too. Sometimes it is useful to analysis them during the
first stages of requirements analysis.
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