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» Optimization strategies for complex queries
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SEBD
2007
121views Database» more  SEBD 2007»
14 years 5 days ago
Query Answering in Expressive Variants of DL-Lite
The use of ontologies in various application domains, such as Data Integration, the Semantic Web, or ontology-based data management, where ontologies provide the access to large am...
Alessandro Artale, Diego Calvanese, Roman Kontchak...
COMPGEOM
2010
ACM
14 years 3 months ago
Orthogonal range reporting: query lower bounds, optimal structures in 3-d, and higher-dimensional improvements
Orthogonal range reporting is the problem of storing a set of n points in d-dimensional space, such that the k points in an axis-orthogonal query box can be reported efficiently. ...
Peyman Afshani, Lars Arge, Kasper Dalgaard Larsen
CAD
2000
Springer
13 years 10 months ago
Time-critical multiresolution rendering of large complex models
Very large and geometrically complex scenes, exceeding millions of polygons and hundreds of objects, arise naturally in many areas of interactive computer graphics. Time-critical ...
Enrico Gobbetti, Eric Bouvier
SIGMOD
2005
ACM
228views Database» more  SIGMOD 2005»
14 years 11 months ago
ConQuer: Efficient Management of Inconsistent Databases
Although integrity constraints have long been used to maintain data consistency, there are situations in which they may not be enforced or satisfied. In this paper, we present Con...
Ariel Fuxman, Elham Fazli, Renée J. Miller
ICDE
2008
IEEE
127views Database» more  ICDE 2008»
15 years 3 days ago
Querying Data under Access Limitations
Data sources on the web are often accessible through web interfaces that present them as relational tables, but require certain attributes to be mandatorily selected, e.g., via a w...
Andrea Calì, Davide Martinenghi