Workflow modeling: exception and failure handling representation

Abstract

The representation of the activities that compose the workflow processes, their execution sequence and relationships, the agents responsible for their execution, and the resources that are used during execution, is known as Workflow Modeling. Several techniques are being proposed to model workflow. One of them is to express the workflow model using the temporal objectoriented data model TF-ORM [20]. The occurrence of failures and exceptions during workflow execution may cause serious problems, especially in mission-critical applications. This paper shows how the TF-ORM formalism, when used to model workflow, allows the representation of several exceptions and the definition of information to be used for the systems recovery.

Process Management and Control for Heterogeneous Domain Models

“…Because it is not always possible to easily change the domain models, the WfMS must be made highly flexible to enable different models and systems to cooperate through it. However, the scale and complexity of the workflow description increases when the WfMS has to handle exceptions and failures [2].…”