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ICDE
2004
IEEE
118views Database» more  ICDE 2004»
16 years 5 months ago
A Peer-to-peer Framework for Caching Range Queries
Peer-to-peer systems are mainly used for object sharing although they can provide the infrastructure for many other applications. In this paper, we extend the idea of object shari...
Ozgur D. Sahin, Abhishek Gupta, Divyakant Agrawal,...
SIGMOD
2006
ACM
162views Database» more  SIGMOD 2006»
16 years 4 months ago
Adaptive query processing: why, how, when, what next
Adaptive query processing has been the subject of a great deal of recent work, particularly in emerging data management environments such as data integration and data streams. We ...
Amol Deshpande, Joseph M. Hellerstein, Vijayshanka...
VLDB
2002
ACM
106views Database» more  VLDB 2002»
15 years 3 months ago
Efficient Algorithms for Processing XPath Queries
Our experimental analysis of several popular XPath processors reveals a striking fact: Query evaluation in each of the systems requires time exponential in the size of queries in ...
Georg Gottlob, Christoph Koch, Reinhard Pichler
OTM
2005
Springer
15 years 9 months ago
Probabilistic Ontologies and Relational Databases
The relational algebra and calculus do not take the semantics of terms into account when answering queries. As a consequence, not all tuples that should be returned in response to ...
Octavian Udrea, Yu Deng, Edward Hung, V. S. Subrah...
167
Voted
ESWS
2010
Springer
15 years 2 months ago
Modeling and Querying Metadata in the Semantic Sensor Web: The Model stRDF and the Query Language stSPARQL
Abstract. RDF will often be the metadata model of choice in the Semantic Sensor Web. However, RDF can only represent thematic metadata and needs to be extended if we want to model ...
Manolis Koubarakis, Kostis Kyzirakos