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DOLAP
2000
ACM
13 years 11 months ago
CUBIST: A New Algorithm For Improving the Performance of Ad-hoc OLAP Queries
Being able to efficiently answer arbitrary OLAP queries that aggregate along any combination of dimensions over numerical and categorical attributes has been a continued, major co...
Lixin Fu, Joachim Hammer
ICDT
2010
ACM
180views Database» more  ICDT 2010»
14 years 4 months 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
VLDB
2007
ACM
182views Database» more  VLDB 2007»
14 years 1 months ago
Continuous Queries in Oracle
This paper describes Continuous Queries (CQ) in Oracle RDBMS, a feature that incorporates stream and complex event processing into an RDBMS, the first such attempt in commercial d...
Sankar Subramanian, Srikanth Bellamkonda, Hua-Gang...
ADBIS
2010
Springer
174views Database» more  ADBIS 2010»
13 years 9 months ago
Exploiting the Semantics of Location Granules in Location-Dependent Queries
Abstract. The need for location-based services has motivated an important research effort in the efficient processing of location-dependent queries. Most of the existing approaches...
Carlos Bobed, Sergio Ilarri, Eduardo Mena
VLDB
2002
ACM
133views Database» more  VLDB 2002»
14 years 7 months ago
Tree pattern query minimization
: Purpose ? Tree pattern is at the core of XML queries. The tree patterns in XML queries typically contain redundancies, especially when broad integrity constraints (ICs) are prese...
Sihem Amer-Yahia, SungRan Cho, Laks V. S. Lakshman...