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The ability to describe the coordinative behavior of interacting Web services is key aspect in the development of next generation Internet software systems. In this paper, a layered architecture for coordination system is introduced. Based on coordination structure that presents the basic architecture of coordination system, we propose a Web services coordination model, Coordination Behavioral Structure (CBS), which formalize the services interactions and their relationships. CBS expresses the coordinative behaviors of a coordination structure. CBS graph constructed by relationships of interactions using basic and extended compositors is proposed for visual description of coordination behaviors. For illustrating CBS, an example and CBS of basic coordination structures are presented.
Date of Conference: 14-16 May 2008