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ICDE
1999
IEEE
151views Database» more  ICDE 1999»
14 years 9 months ago
Data Integration by Describing Sources with Constraint Databases
We develop a data integration approach for the efficient evaluation of queries over autonomous source databases. The approach is based on some novel applications and extensions of...
Xun Cheng, Guozhu Dong, Tzekwan Lau, Jianwen Su
EDBT
2010
ACM
149views Database» more  EDBT 2010»
14 years 28 days ago
Statistics-based parallelization of XPath queries in shared memory systems
The wide availability of commodity multi-core systems presents an opportunity to address the latency issues that have plaqued XML query processing. However, simply executing multi...
Rajesh Bordawekar, Lipyeow Lim, Anastasios Kements...
ICDT
2010
ACM
180views Database» more  ICDT 2010»
14 years 5 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
DEBU
2000
147views more  DEBU 2000»
13 years 7 months ago
XJoin: A Reactively-Scheduled Pipelined Join Operator
Wide-area distribution raises significant performance problems for traditional query processing techniques as data access becomes less predictable due to link congestion, load imb...
Tolga Urhan, Michael J. Franklin
IJWIS
2007
181views more  IJWIS 2007»
13 years 7 months ago
Answering queries over incomplete data stream histories
Streams of data often originate from many distributed sources. A distributed stream processing system publishes such streams of data and enables queries over the streams. This allo...
Alasdair J. G. Gray, Werner Nutt, M. Howard Willia...