Adapting transactions to exceptional situations using structured messages

We concentrate on the property that the progression of collaborative work involves communication among participants, and we consider a flexible method for managing transactions utilizing structured messages. In the literature, advanced transaction models for collaborative work environments have been proposed. However, since the models treat work processes as a target of transactions, it is difficult to adapt to exceptions or dynamic reconfiguration of processes. In this paper, we consider examples of handling exceptions in an environment involving workflow processes and database transactions, utilizing structured messages. We use the message transaction model for specifying workflow processes and various advanced transactions