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    Three cases for query decorrelation in XQuery

    Date
    2003
    Author
    May, N
    Helmer, S
    Moerkotte, G
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    Abstract
    We present algebraic equivalences that allow to unnest nested algebraic expressions for order-preserving algebraic operators. We illustrate how these equivalences can be applied successfully to unnest nested queries given in the XQuery language. Measurements illustrate the performance gains possible our approach
    URI
    http://dx.doi.org/10.1007/978-3-540-39429-7_5
    http://link.springer.com/chapter/10.1007/978-3-540-39429-7_5
    http://hdl.handle.net/10863/1062
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    • Conference related Publications - Computer Science

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