Comparing workflow specification languages: A matter of views

• Autores: Serge Abiteboul, Pierre Bourhis, Victor Vianu
• Localización: ACM transactions on database systems, ISSN 0362-5915, Vol. 37, Nº 2, 2012
• Idioma: inglés
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• Resumen

  • We address the problem of comparing the expressiveness of workflow specification formalisms using a notion of view of a workflow. Views allow to compare widely different workflow systems by mapping them to a common representation capturing the observables relevant to the comparison. Using this framework, we compare the expressiveness of several workflow specification mechanisms, including automata, temporal constraints, and pre-and postconditions, with XML and relational databases as underlying data models. One surprising result shows the considerable power of static constraints to simulate apparently much richer workflow control mechanisms.