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ICDE
2004
IEEE

Nested Queries and Quantifiers in an Ordered Context

14 years 5 months ago
Nested Queries and Quantifiers in an Ordered Context
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.
Norman May, Sven Helmer, Guido Moerkotte
Added 01 Nov 2009
Updated 01 Nov 2009
Type Conference
Year 2004
Where ICDE
Authors Norman May, Sven Helmer, Guido Moerkotte
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