Database transaction models for advanced applications
Modern database systems
Specification and implementation of exceptions in workflow management systems
ACM Transactions on Database Systems (TODS)
Database Support for Workflow Management: The Wide Project
Database Support for Workflow Management: The Wide Project
Exception Handling in Workflow Systems
Applied Intelligence
COOPIS '96 Proceedings of the First IFCIS International Conference on Cooperative Information Systems
Data flow and validation in workflow modelling
ADC '04 Proceedings of the 15th Australasian database conference - Volume 27
Synchronizing copies of external data in workflow management systems
CAiSE'05 Proceedings of the 17th international conference on Advanced Information Systems Engineering
Analyzing Data Dependence Based on Workflow Net
ICCS '07 Proceedings of the 7th international conference on Computational Science, Part III: ICCS 2007
Information and Software Technology
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Workflow management systems (WfMSs) frequently use data to coordinate the execution of workflow instances. A WfMS evaluates conditions defined on data to make the control flow decisions i.e. selecting the next activity or deciding on an actor. However, data – within and outside of a running workflow instance – may change dynamically. Modifications of data needed for past control flow decisions may invalidate these decisions. We analyze the desired synchronization policies, and propose a mechanism called data guard to selectively guarantee that significant changes in data are recognized and handled by the data management system to ensure correctness of workflow execution in face of asynchronous updates.