Constraint-based Flexible Workflows

This work presents the idea and a prototype of workflow systems defined through constraints. We think that in many domain areas, such as health care, workflow systems are too inflexible. One does not know in advance what activities does the patient has to go through. Actually a new form of interaction with the workflow is needed, in which a controller asks the systems which precondition activities are necessary in order to execute a target activity and schedule the target activity. We also present Tucupi, a prototype of such constraint based WFMS. © Springer-Verlag Berlin Heidelberg 2003.2806151158(1995) Role Based Access Control: Features and Motivations, , IEEE Computer Society Press, New Orleans, Louisianna, DecemberDourish, P., Holmes, J., MacLean, A., Marqvardsen, P., Zbyslaw, A., Freeflow: Mediating between representation and action in workflow systems (1996) Conference on Computer Supported Cooperative Work CSCW96, , ACM, NovemberEder, J., Panagos, E., Managing time in workflow systems (2000) Workflow Handbook 2001, pp. 109-132. , L. Fischer, editor, Future Strategies INCMangan, P., Sadiq, S., On building workflow models for flexible processes (2002) The Thirteenth Australasian Database Conference ADC2002, , Melbourne, AustraliaMangan, P.J., Sadiq, S., A constraint specification approach to building flexible workflows (2002) Journal of Research and Practice in Information TechnologyMarjanovic, O., Orlowska, M., On modeling and verification of temporal constraints in production workflows (1999) Knowledge and Information Systems, 1 (2)(2003) W-RBAC: A Workflow Secutiry Model Incorporating Controlled Overriding of Constraints, , submittedSandhu, R., Coyne, E., Feinstein, H., Youman, C., Role-based access control models (1996) IEEE Computer, 29 (2), pp. 38-47Wainer, J., Logic representation of processes in work activity coordination (2000) Proceedings of the ACM Symposium on Applied Computing, Coordination Track, 1, pp. 203-209. , ACM, ACM Press, Marc