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» The Constellation Query Language
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SIGMOD
2006
ACM
127views Database» more  SIGMOD 2006»
16 years 3 months ago
Query evaluation using overlapping views: completeness and efficiency
We study the problem of finding efficient equivalent viewbased rewritings of relational queries, focusing on query optimization using materialized views under the assumption that ...
Gang Gou, Maxim Kormilitsin, Rada Chirkova
125
Voted
ICDT
2010
ACM
180views Database» more  ICDT 2010»
16 years 28 days ago
Foundations of SPARQL Query Optimization
We study fundamental aspects related to the efficient processing of the SPARQL query language for RDF, proposed by the W3C to encode machine-readable information in the Semantic W...
Michael Schmidt, Michael Meier, Georg Lausen
STOC
2003
ACM
193views Algorithms» more  STOC 2003»
16 years 3 months ago
Space efficient dynamic stabbing with fast queries
In dynamic stabbing, we operate on a dynamic set of intervals. A stabbing query asks for an interval containing a given point. This basic problem encodes problems such as method l...
Mikkel Thorup
239
Voted
ICDE
2007
IEEE
132views Database» more  ICDE 2007»
16 years 4 months ago
XPlainer: Visual Explanations of XPath Queries
The popularity of XML has motivated the development of novel XML processing tools many of which embed the XPath language for XML querying, transformation, constraint specification...
Mariano P. Consens, John W. S. Liu, Flavio Rizzolo
117
Voted
EDOC
2003
IEEE
15 years 8 months ago
MQL: a Powerful Extension to OCL for MOF Queries
The Meta-Object Facility (MOF) provides a standardised framework for object-oriented models. An instance of a MOF model contains objects and links whose interfaces are entirely de...
David Hearnden, Kerry Raymond, Jim Steel