Abstract:
The main objective of the research is to design an effective workflow representation and
defining a model for intelligent and robust execution of workflows. An effective and
powerful representation of workflows is formalized by comparing and analyzing different
workflow representational techniques. The aim is to identify the pros and cons associated
with them and hence modify the existing techniques appropriately to rectify the
associated problems to acquire the workflow representation in much more detail and
expressive way. The comparison and analysis of Petri-Nets and UML activity diagram
directs us to use both of them hand in hand under the concept of CIMOSA- Workflow
(C-Wf) model to represent the workflow through workflow activity diagram. C-Wf
model and workflow activity diagram are then appropriately modified to rectify the
identified problems and to provide more expressive, effective and powerful
representation of workflows. The research also aims to provide an intelligent solution and
algorithm for the execution of a workflow process by ensuring the data consistency,
correctness, completeness among various tasks involved. The proposed solution provides
a synchronized execution of a workflow activity, free of failure among various tasks
involved in a workflow process. A synchronizing agent is bound at a very low level, i.e.
with the workflow activity to assure the execution of task robustly. An algorithm is also
provided to show the complete execution of workflow process. The research enhances the
capabilities of workflow management systems by improving the expressiveness of
workflows and by providing robust execution of workflows.
