Expressing Model Constraints Visually with VMQL

Harald Störrle

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    OCL is the de facto standard language for expressing constraints and queries on UML models. However, OCL expressions are very difficult to create, understand, and maintain, even with the sophisticated tool support now available. In this paper, we propose to use the Visual Model Query Language (VMQL) for specifying constraints on UML models. We examine VMQL's usability by controlled experiments and its expressiveness by a representative sample. We conclude that VMQL is less expressive than OCL, although expressive enough for most of the constraints in the sample. In terms of usability, however, VMQL is superior to OCL, although the experimental evidence we present here is not as compelling as the one we presented when comparing VMQL and OCL on model querying.
    Original languageEnglish
    Title of host publication2011 IEEE Symposium on Visual Languages and Human-Centric Computing (VL/HCC)
    Publication date2011
    ISBN (Print)978-1-4577-1246-3
    Publication statusPublished - 2011
    Event2011 IEEE Symposium on Visual Languages and Human-Centric Computing - Pittsburgh, PA, United States
    Duration: 18 Sep 201122 Sep 2011


    Conference2011 IEEE Symposium on Visual Languages and Human-Centric Computing
    Country/TerritoryUnited States
    CityPittsburgh, PA
    Internet address
    SeriesIEEE Symposium on Visual Languages and Human-Centric Computing. Proceedings

    Bibliographical note

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