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20th International Conference on Data Engineering (ICDE'04)
Nested Queries and Quantifiers in an Ordered Context
Boston, Massachusetts
March 30-April 02
ISBN: 0-7695-2065-0
ASCII Text
x 
 
Norman May, Sven Helmer, Guido Moerkotte, "Nested Queries and Quantifiers in an Ordered Context," Data Engineering, International Conference on, pp. 239, 20th International Conference on Data Engineering (ICDE'04), 2004.
 
 
BibTex
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@article{ 10.1109/ICDE.2004.1320001,
author = {Norman May and Sven Helmer and Guido Moerkotte},
title = {Nested Queries and Quantifiers in an Ordered Context},
journal ={Data Engineering, International Conference on},
volume = {0},
year = {2004},
issn = {1063-6382},
pages = {239},
doi = {http://doi.ieeecomputersociety.org/10.1109/ICDE.2004.1320001},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - CONF
JO - Data Engineering, International Conference on
TI - Nested Queries and Quantifiers in an Ordered Context
SN - 1063-6382
SP
EP
A1 - Norman May,
A1 - Sven Helmer,
A1 - Guido Moerkotte,
PY - 2004
KW - null
VL - 0
JA - Data Engineering, International Conference on
ER -
 
Norman May, Universit?t Mannheim, Germany
Sven Helmer, Universit?t Mannheim, Germany
Guido Moerkotte, Universit?t Mannheim, Germany
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.
Citation:
Norman May, Sven Helmer, Guido Moerkotte, "Nested Queries and Quantifiers in an Ordered Context," icde, pp.239, 20th International Conference on Data Engineering (ICDE'04), 2004
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