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» Query Containment for Data Integration Systems
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ICDT
2001
ACM
110views Database» more  ICDT 2001»
15 years 4 months ago
On Answering Queries in the Presence of Limited Access Patterns
In information-integration systems, source relations often have limitations on access patterns to their data; i.e., when one must provide values for certain attributes of a relatio...
Chen Li, Edward Y. Chang
BMCBI
2005
159views more  BMCBI 2005»
14 years 11 months ago
Columba: an integrated database of proteins, structures, and annotations
Background: Structural and functional research often requires the computation of sets of protein structures based on certain properties of the proteins, such as sequence features,...
Silke Trißl, Kristian Rother, Heiko Mül...
AGENTLINK
2003
Springer
283views ECommerce» more  AGENTLINK 2003»
15 years 5 months ago
MIKS : An Agent Framework Supporting Information Access and Integration
Providing an integrated access to multiple heterogeneous sources is a challenging issue in global information systems for cooperation and interoperability. In the past, companies h...
Domenico Beneventano, Sonia Bergamaschi, Gionata G...
DPD
1998
117views more  DPD 1998»
14 years 11 months ago
Solving Local Cost Estimation Problem for Global Query Optimization in Multidatabase Systems
To meet users’ growing needs for accessing pre-existing heterogeneous databases, a multidatabase system (MDBS) integrating multiple databases has attracted many researchers recen...
Qiang Zhu, Per-Åke Larson
OWLED
2007
15 years 1 months ago
On Querying Ontologies with Contextual Logic Programming
Abstract. We describe a system in which Contextual Logic Programming is used as a mediator for knowledge modeled by ontologies. Our system provides the components required to behav...
Cláudio Fernandes, Nuno Lopes 0002, Salvado...