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ESWS
2011
Springer
12 years 8 months ago
2011
Springer
The emergence of the Semantic Web has led to the creation of large semantic knowledge bases, often in the form of RDF databases. Improving the performance of RDF databases necessit...
DEXA
2009
Springer
13 years 8 months ago
2009
Springer
Abstract. Sensor database is a type of database management system which offers sensor data and stored data in its data model and query languages. In this system, when a user poses ...
STOC
2007
ACM
14 years 4 months ago
2007
ACM
Motivated by the capabilities of modern storage architectures, we consider the following generalization of the data stream model where the algorithm has sequential access to multi...
AMAI
2005
Springer
13 years 4 months ago
2005
Springer
Mediator systems integrate distributed, heterogeneous and autonomous data sources, but their e ective use requires the solution of hard query optimization problems. This is usuall...
SIGMOD
2009
ACM
14 years 4 months ago
2009
ACM
In the rank join problem we are given a relational join R1 1 R2 and a function that assigns numeric scores to the join tuples, and the goal is to return the tuples with the highes...