Meta workflows as a control and coordination mechanism for exception handling in workflow systems

Meta workflows as a control and coordination mechanism for exception handling in workflow systems

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Article ID: iaor20061212
Country: Netherlands
Volume: 40
Issue: 1
Start Page Number: 89
End Page Number: 105
Publication Date: Jul 2005
Journal: Decision Support Systems
Authors: ,
Keywords: workflow
Abstract:

A higher level control and coordination mechanism is required for exception handling in workflow systems. This paper describes such a framework based on events, states, and a new kind of process called a meta workflow. Meta workflows have five kinds of meta activities and facilitate control over base workflows. We describe the framework and illustrate it with examples to show its features. The paper gives an architecture for incorporating it into existing workflows and also provides a formal semantics of execution. This framework can be used in Web services, supply chains, and inter-organizational applications where coordination requirements are complex, and flexible and adaptable workflows are needed. It is also useful for handling not just failure recovery but also various kinds of special situations, which arise frequently in web-based applications.

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