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» A SAT approach to query optimization in mediator systems
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MOBIDE
2005
ACM
14 years 2 months ago
DAIMON: data integration for a mobile network
We describe the DAIMON system for data integration of nomadic data. DAIMON is based on an extension of the mediator-wrapper architecture, where each node is a mediator of its own ...
Constantinos V. Katsaros, Ioannis L. Niarhos, Vasi...
AIPS
1998
13 years 10 months ago
Flexible and Scalable Query Planning in Distributed and Heterogeneous Environments
We present the application of the Planning by Rewriting PbR framework to query planning in distributed and heterogeneous environments. PbR is a new paradigm for e cient high-quali...
José Luis Ambite, Craig A. Knoblock
DBISP2P
2005
Springer
129views Database» more  DBISP2P 2005»
14 years 2 months ago
Querying a Super-Peer in a Schema-Based Super-Peer Network
We propose a novel approach for de ning and querying a super-peer within a schema-based super-peer network organized into a two-level architecture: the low level, called the peer l...
Domenico Beneventano, Sonia Bergamaschi, Francesco...
PVLDB
2008
130views more  PVLDB 2008»
13 years 8 months ago
Analyzing and revising data integration schemas to improve their matchability
Data integration systems often provide a uniform query interface, called a mediated schema, to a multitude of data sources. To answer user queries, such systems employ a set of se...
Xiaoyong Chai, Mayssam Sayyadian, AnHai Doan, Arno...
VLDB
1992
ACM
151views Database» more  VLDB 1992»
14 years 19 days ago
A Uniform Approach to Processing Temporal Queries
Research in temporal databases has mainly focused on defining temporal data models by extending existing models, and developing access structures for temporal data. Little has bee...
Umeshwar Dayal, Gene T. J. Wuu