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A method for creating entreprise architecture metamodels: applied to systems modifiability
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.ORCID iD: 0000-0003-3089-3885
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.ORCID iD: 0000-0003-2017-7914
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.ORCID iD: 0000-0002-3293-1681
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
2009 (English)In: International Journal of Computer Science and Applications, ISSN 0972-9038, E-ISSN 0972-9038, Vol. 6, no 5, 89-120 p.Article in journal (Refereed) Published
Abstract [en]

Enterprise architecture models can be used in order to increase the general understanding of enterprise systems and specifically to perform various kinds of analysis. It is generally understood that such modeling encompasses general scientific issues, but the monetary aspects of the modeling of software systems and their environment are not equally well acknowledged. Even more so, creating a good metamodel for enterprise software systems analysis is an important but challenging task. The present paper describes a method for creating metamodels for such analysis. The enterprise architecture models are formalized using probabilistic relational models, which enables the combination of regular entityrelationship modeling aspects with means to perform enterprise architecture analysis. The proposed method for creating metamodels is general, however this paper presents the method by creating a metamodel for systems modifiability, i.e. the cost of making changes to enterprise-wide systems. The method and the method outcome, i.e. the metamodel, is validated based on survey and workshop data and the applicability of the metamodel is illustrated with an instantiated architectural model based on a software change project at a large Nordic software and hardware vendor.

Place, publisher, year, edition, pages
2009. Vol. 6, no 5, 89-120 p.
Keyword [en]
Enterprise architecture, Metamodeling, Probabilistic relational models, Software modifiability
National Category
Other Computer and Information Science
Identifiers
URN: urn:nbn:se:kth:diva-12334Scopus ID: 2-s2.0-77953128879OAI: oai:DiVA.org:kth-12334DiVA: diva2:309773
Note

QC 20100716

Available from: 2010-04-08 Created: 2010-04-08 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Enterprise Systems Modifiability Analysis: An Enterprise Architecture Modeling Approach for Decision Making
Open this publication in new window or tab >>Enterprise Systems Modifiability Analysis: An Enterprise Architecture Modeling Approach for Decision Making
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Contemporary enterprises depend to great extent on software systems. During the past decades the number of systems has been constantly increasing and these systems have become more integrated with one another. This has lead to a growing complexity in managing software systems and their environment. At the same time business environments today need to progress and change rapidly to keep up with evolving markets. As the business processes change, the systems need to be modified in order to continue supporting the processes.

The complexity increase and growing demand for rapid change makes the management of enterprise systems a very important issue. In order to achieve effective and efficient management, it is essential to be able to analyze the system modifiability (i.e. estimate the future change cost). This is addressed in the thesis by employing architectural models. The contribution of this thesis is a method for software system modifiability analysis using enterprise architecture models. The contribution includes an enterprise architecture analysis formalism, a modifiability metamodel (i.e. a modeling language), and a method for creating metamodels. The proposed approach allows IT-decision makers to model and analyze change projects. By doing so, high-quality decision support regarding change project costs is received.

This thesis is a composite thesis consisting of five papers and an introduction. Paper A evaluatesa number of analysis formalisms and proposes extended influence diagrams to be employed for enterprise architecture analysis. Paper B presents the first version of the modifiability metamodel. InPaper C, a method for creating enterprise architecture metamodels is proposed. This method aims to be general, i.e. can be employed for other IT-related quality analyses such as interoperability, security, and availability. The paper does however use modifiability as a running case. The second version of the modifiability metamodel for change project cost estimation is fully described in Paper D. Finally, Paper E validates the proposed method and metamodel by surveying 110 experts and studying 21 change projects at four large Nordic companies. The validation indicates that the method and metamodel are useful, contain the right set of elements and provide good estimation capabilities.

Place, publisher, year, edition, pages
Stockholm: KTH, 2010. x, 29 p.
Series
Trita-EE, ISSN 1653-5146 ; 2010:14
Keyword
Enterprise Architecture, Software System Modifiability, Decision Making, Metamodeling, Enterprise Architecture Analysis, Software Change Cost Estimation
National Category
Other Computer and Information Science
Identifiers
urn:nbn:se:kth:diva-12341 (URN)
Public defence
2010-04-20, Room F3, Lindstedtsv 2, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
QC20100716Available from: 2010-04-09 Created: 2010-04-08 Last updated: 2010-07-16Bibliographically approved

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Lagerström, RobertFranke, UlrikJohnson, Pontus

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