JOURNAL OF SOFTWARE (JSW)
ISSN : 1796-217X
Volume : 3    Issue : 2    Date : February 2008

Formalising Service-Oriented Design
Mikhail Perepletchikov, Caspar Ryan, Keith Frampton, and Heinz Schmidt
Page(s): 1-14
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Abstract
Service-Oriented Computing (SOC) is an emerging paradigm for developing software systems that
employ services. Presently there is already much research effort in the areas of service discovery
and orchestration, business process modelling, and the semantic web. While these are all
important aspects for moving towards the pervasive adoption of SOC, most existing work assumes
the existence of black box services, with little attention given to how such services might be
developed in a systematic manner. Furthermore, a precise description of what constitutes a
service-oriented system is yet to be formally defined, and the overall impact of service-orientation on
the software design process is not well understood. Therefore, this work presents a formal model
covering design artefacts in service-oriented systems and their structural and behavioural
properties. The model promotes a better understanding of service-oriented design concepts, and in
particular, enables the definition of software metrics in an unambiguous, formal manner. Defining
such a model and metrics is an initial step towards deriving a comprehensive service-oriented
software design methodology.

Index Terms
Service-Oriented Computing (SOC), formal model of software design, metrics, design methodology