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ICDE
2004
IEEE

Minimization and Group-By Detection for Nested XQueries

12 years 9 months ago
Minimization and Group-By Detection for Nested XQueries
We describe and evaluate a query minimization technique that applies to XQueries, which are nested, perform arbitrary joins, and freely mix bag and set semantics. These features create key challenges that fundamentally extend the problem of minimizing conjunctive queries (no nesting, no mixed semantics) or tree pattern XPath expressions (no nesting, no joins, no bag semantics). The technique detects and removes redundant navigation across and within nested subqueries. An important application of this technique is group-by detection.
Alin Deutsch, Yannis Papakonstantinou, Yu Xu
Added 01 Nov 2009
Updated 01 Nov 2009
Type Conference
Year 2004
Where ICDE
Authors Alin Deutsch, Yannis Papakonstantinou, Yu Xu
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