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Nested queries and quantifiers in an ordered context
Conference proceeding   Peer reviewed

Nested queries and quantifiers in an ordered context

Norman May, Sven Helmer and Guido Moerkotte
Proceedings of the 20th International Conference on Data Engineering, ICDE 2004, 30 March - 2 April 2004, Boston, MA, USA, pp.239-250
20th IEEE International Conference on Data Engineering (ICDE 2004) (Boston, MA, 30/03/2004 - 02/04/2004)
2004
DOI: https://doi.org/10.1109/ICDE.2004.1320001
Handle:
https://hdl.handle.net/10863/987

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 by unnesting.
url
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=1320001View

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