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ESA
2004
Springer
106views Algorithms» more  ESA 2004»
15 years 3 months ago
Efficient Tradeoff Schemes in Data Structures for Querying Moving Objects
The ability to represent and query continuously moving objects is important in many applications of spatio-temporal database systems. In this paper we develop data structures for ...
Pankaj K. Agarwal, Lars Arge, Jeff Erickson, Hai Y...
INFSOF
2000
92views more  INFSOF 2000»
14 years 11 months ago
Identifying relevant constraints for semantic query optimization
Semantic query optimization is the process of utilizing information implied by integrity constraints to reformulate the query into one that generates the same set of answers in a ...
Sang-goo Lee, Lawrence J. Henschen, Jonghun Chun, ...
PODS
2004
ACM
115views Database» more  PODS 2004»
15 years 11 months ago
Foundations of Semantic Web Databases
The Semantic Web is based on the idea of adding more machine-readable semantics to web information via annotations written in a language called the Resource Description Framework ...
Claudio Gutiérrez, Carlos A. Hurtado, Alber...
EDBT
2012
ACM
228views Database» more  EDBT 2012»
13 years 1 months ago
Towards scalable data integration under constraints
In this paper we consider the problem of answering queries using views, with or without ontological constraints, which is important for data integration, query optimization, and d...
George Konstantinidis, José Luis Ambite
ECAI
1992
Springer
15 years 3 months ago
A Strategy for the Computation of Conditional Answers
We consider non-Horn Deductive Data Bases (DDB) represented in a First Order language without function symbols. In this context the DDB is an incomplete description of the world. ...
Robert Demolombe