Quantifiers in XQuery

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Fourth International Conference on Web Information Systems Engineering (WISE'03) p. 313
Quantifiers in XQuery
Norman May, Universität Mannheim
Sven Helmer, Universität Mannheim
Guido Moerkotte, Universität Mannheim

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DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/WISE.2003.1254501
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Abstract
We present algebraic equivalences that allow to unnest nested algebraic expressions containing quantifiers for order-preserving algebraic operators. We illustrate how these equivalences can be applied successfully to unnest nested queries formulated in XQuery. Measurements illustrate the performance gains possible by unnesting.
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Citation: Norman May, Sven Helmer, Guido Moerkotte, "Quantifiers in XQuery," wise, p. 313, Fourth International Conference on Web Information Systems Engineering (WISE'03), 2003

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