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» Optimization strategies for complex queries
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ICLP
2007
Springer
14 years 2 months ago
OnEQL: An Ontology Efficient Query Language Engine for the Semantic Web
Abstract. In this paper we describe the OnEQL system, a query engine that implements optimization techniques and evaluation strategies to speed up the evaluation time of querying a...
Edna Ruckhaus, Maria-Esther Vidal, Eduardo Ruiz
DEXA
2011
Springer
243views Database» more  DEXA 2011»
12 years 10 months ago
RoSeS: A Continuous Content-Based Query Engine for RSS Feeds
In this article we present RoSeS (Really Open Simple and Efficient Syndication), a generic framework for content-based RSS feed querying and aggregation. RoSeS is based on a data-...
Jordi Creus Tomàs, Bernd Amann, Nicolas Tra...
IDEAS
1997
IEEE
107views Database» more  IDEAS 1997»
14 years 2 months ago
Query Processing in the ROL system
The ROL system is a novel deductive object-oriented database system that has been implemented at the University of Regina. It provides a uniform rule-based declarative language fo...
Mengchi Liu, Weidong Yu
WWW
2010
ACM
14 years 5 months ago
Matrix "Bit" loaded: a scalable lightweight join query processor for RDF data
The Semantic Web community, until now, has used traditional database systems for the storage and querying of RDF data. The SPARQL query language also closely follows SQL syntax. A...
Medha Atre, Vineet Chaoji, Mohammed J. Zaki, James...
SIGMOD
1993
ACM
150views Database» more  SIGMOD 1993»
14 years 2 months ago
Predicate Migration: Optimizing Queries with Expensive Predicates
The traditional focus of relational query optimization schemes has been on the choice of join methods and join orders. Restrictions have typically been handled in query optimizers ...
Joseph M. Hellerstein, Michael Stonebraker