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      Semantical Considerations on Workflows: An Algebra for Intertask Dependencies

      Proceedings of the Fifth International Workshop on Database Programming Languages (DBPL-5)

      Database Programming Languages

      6-8 September 1995

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          Abstract

          Workflows are composite multitransaction activities occurring in heterogeneous environments. They relax the semantic properties of traditional transactions to accommodate the demands of such environments. It is important that workflows be specified declaratively, reasoned about formally, and scheduled automatically. Declarative approaches based on intertask dependencies are prominent in the literature. However, extant approaches often lack a formal semantics, or fail to meet other important criteria. Also, they do not carefully distinguish event types from instances, a distinction that is crucial when the constraint that tasks are loop-free is relaxed. We propose an approach that gives a rigorous formal semantics for dependencies and meets the above conditions. Our approach uses algebraic expressions to represent dependencies and uses symbolic reasoning to take scheduling decisions. It can form the basis of a programming language for workflows.

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          Merging application-centric and data-centric approaches to support transaction-oriented multi-system workflows

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            Author and article information

            Contributors
            Conference
            September 1995
            September 1995
            : 1-8
            Affiliations
            Department of Computer Science

            North Carolina State University

            Raleigh, NC 27695-8206, USA
            Article
            10.14236/ewic/DBPL1995.23
            © Munindar P. Singh. Published by BCS Learning and Development Ltd. Proceedings of the Fifth International Workshop on Database Programming Languages, Gubbio, Umbria, Italy

            This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

            Proceedings of the Fifth International Workshop on Database Programming Languages
            DBPL-5
            5
            Gubbio, Umbria, Italy
            6-8 September 1995
            Electronic Workshops in Computing (eWiC)
            Database Programming Languages
            Product
            Product Information: 1477-9358BCS Learning & Development
            Self URI (journal page): https://ewic.bcs.org/
            Categories
            Electronic Workshops in Computing

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