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PODS
2003
ACM
114views Database» more  PODS 2003»
16 years 5 months ago
Soft stratification for magic set based query evaluation in deductive databases
In this paper we propose a new bottom-up query evaluation method for stratified deductive databases based on the Magic Set approach. As the Magic Sets rewriting may lead to unstra...
Andreas Behrend
APWEB
2009
Springer
15 years 9 months ago
Effective Top-k Keyword Search in Relational Databases Considering Query Semantics
Keyword search in relational databases has recently emerged as a new research topic. As a search result is often assembled from multiple relational tables, existing IR-style rankin...
Yanwei Xu, Yoshiharu Ishikawa, Jihong Guan
MIS
2001
Springer
151views Multimedia» more  MIS 2001»
15 years 10 months ago
A Data Model for Querying Wavelet Features in Image Databases
Multimedia databases deal with storage and retrieval of complex descriptors of image contents, called features. Traditional techniques consider features as “black boxes,” ofte...
Simone Santini, Amarnath Gupta
SIGMOD
2004
ACM
241views Database» more  SIGMOD 2004»
16 years 5 months ago
SINA: Scalable Incremental Processing of Continuous Queries in Spatio-temporal Databases
This paper introduces the Scalable INcremental hash-based Algorithm (SINA, for short); a new algorithm for evaluating a set of concurrent continuous spatio-temporal queries. SINA ...
Mohamed F. Mokbel, Xiaopeng Xiong, Walid G. Aref
CGI
2003
IEEE
15 years 9 months ago
Consistent Visualization and Querying of GIS Databases by a Location-Aware Mobile Agent
Location-aware mobile users need to access, query, and visualize, geographic information in a wide variety of applications including tourism, navigation, environmental management,...
Suresh K. Lodha, Nikolai M. Faaland, Grant Wong, A...