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» Applying Multiple Query Optimization in Mobile Databases
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KRDB
2003
142views Database» more  KRDB 2003»
15 years 1 months ago
Optimizing Query Answering in Description Logics using Disjunctive Deductive Databases
Motivated by the possibilities of applying deductive database technology for efficient query answering in description logics, we present a translation operator µ that transforms...
Boris Motik, Raphael Volz
VLDB
1998
ACM
108views Database» more  VLDB 1998»
15 years 3 months ago
MindReader: Querying Databases Through Multiple Examples
Users often can not easily express their queries. For example, in a multimedia image by content setting, the user might want photographs with sunsets; in current systems, like QBI...
Yoshiharu Ishikawa, Ravishankar Subramanya, Christ...
CIKM
2008
Springer
15 years 1 months ago
Modeling and exploiting query interactions in database systems
The typical workload in a database system consists of a mixture of multiple queries of different types, running concurrently and interacting with each other. Hence, optimizing per...
Mumtaz Ahmad, Ashraf Aboulnaga, Shivnath Babu, Kam...
82
Voted
SSDBM
2010
IEEE
127views Database» more  SSDBM 2010»
15 years 4 months ago
Optimizing All-Nearest-Neighbor Queries with Trigonometric Pruning
Many applications require to determine the k-nearest neighbors for multiple query points simultaneously. This task is known as all-(k)-nearest-neighbor (AkNN) query. In this paper,...
Tobias Emrich, Franz Graf, Hans-Peter Kriegel, Mat...
ADBIS
2000
Springer
188views Database» more  ADBIS 2000»
15 years 4 months ago
Algorithms for Rewriting Aggregate Queries Using Views
Queries involving aggregation are typical in a number of database research areas, such as data warehousing, global information systems and mobile computing. One of the main ideas ...
Sara Cohen, Werner Nutt, Alexander Serebrenik