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    Path locks for XML document collaboration

    Dekeyser, S. and Hidders, Jan (2002) Path locks for XML document collaboration. In: Wang Ling, T. and Dayal, U. and Bertino, E. and Ng, W.K. and Goh, A. (eds.) 3rd International Conference on Web Information Systems Engineering: WISE 2002. IEEE Computer Society, pp. 105-114. ISBN 9780769517668.

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    The hierarchical and semistructured nature of XML data can cause complicated update-behavior. The updates are not limited to entire document trees, but can involve subtrees and even individual elements. These document parts correspond to, e.g. sections in text documents or sub-diagrams in vector graphics files. Providing suitable locking mechanisms for semi-structured data can significantly improve collaboration systems that store their data as XML documents. We show that concurrency control mechanisms in CVS, relational, and object oriented database systems are inadequate for collaboration systems based on semistructured data. We therefore propose a new locking scheme of fine granularity based on path locks. We also show that our proposed mechanism avoids conflicts by ensuring serializability, supports both top-down and bottom-up query evaluation, and is relatively efficient.


    Item Type: Book Section
    School: Birkbeck Faculties and Schools > Faculty of Science > School of Computing and Mathematical Sciences
    Depositing User: Sarah Hall
    Date Deposited: 20 Apr 2021 18:49
    Last Modified: 09 Aug 2023 12:50


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