Michael Gillmann

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Workflow management systems (WFMS) that are geared for the orchestration of business processes across multiple organizations are complex distributed systems: they consist of multiple workflow engines, application servers, and communication middleware servers such as ORBs, where each of these server types can be replicated on multiple computers for(More)
The Mentor-lite prototype has been developed within the research project "Architecture, Configuration, and Administration of Large Workflow Management Systems" funded by the German Science Foundation (DFG). In this paper, we present the architecture of Mentor-lite and our approach towards customizability. The demo will show the feasibility of the presented(More)
Advanced e-services require efficient, flexible, and easy-to-use workflow technology that integrates well with mainstream Internet technologies like XML and Web servers. This paper discusses an XML-enabled architecture for distributed workflow management that is implemented in the latest version of our Mentor-lite prototype system. The key asset of this(More)
Enterprise-spanning workflows require workflow management systems that can be tailored to specific application needs, as well as enhanced support for interoperability between different workflow management systems. In virtual enterprises, the interoperability problem is not limited to workflow execution, but also entails facilities like worklist management(More)
Workflow management systems (WFMSs) that are geared for the orchestration of enterprise-wide or even " virtual-enterprise "-style business processes across multiple organizations are complex distributed systems. They consist of multiple workflow engines, application servers, and ORB-style communication servers. Thus, deriving a suitable configuration of an(More)
Workjlow management systems support the eficient, largely automated execution of business processes. Howevel; using a workflow management system typically requires implementing the application's controljlow exclusively by the workflow management system. This approach is powerful cf the control flow is specified and implemented from scratch, but it has(More)
Workflow management systems are a cornerstone of mission-criticial, possibly cross-organizational business processes. For large-scale applications both their performance and availability are crucial factors, and the system needs to be properly configured to meet the application demands. Despite ample work on scalable system architectures for workflow(More)
The Mentor-lite prototype has been developed within the research project “Architecture, Configuration, and Administration of Large Workflow Management Systems” funded by the German Science Foundation (DFG). It has evolved from its predecessor Mentor [1], but aims at a simpler architecture. The main goal of Mentor-lite has been to build a(More)