1527 search results - page 55 / 306 » Data Integration by Describing Sources with Constraint Datab... |
150
Voted
IAJIT
2010
15 years 2 months ago
2010
: A broad variety of data is available in distinct heterogeneous sources, stored under different formats: database formats (in relational and object-oriented models), document form...
160
Voted
DKE
2010
15 years 3 months ago
2010
We describe the Consistency Extractor System (ConsEx) that computes consistent answers to Datalog queries with negation posed to relational databases that may be inconsistent with...
129
Voted
SIGMOD
1999
ACM
15 years 8 months ago
1999
ACM
Existing data-integration systems based on the mediation architecture employ a variety of mechanisms to describe the query-processing capabilities ofsources. However, these system...
120
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IAJIT
2008
15 years 3 months ago
2008
: In this paper a run-time model is proposed. The run-time model enforces integrity constraints for attributes that are derived from composition and inheritance hierarchies. The ru...
146
Voted
BTW
2007
Springer
15 years 7 months ago
2007
Springer
: Schema mapping techniques for data exchange have become popular and useful tools both in research and industry. A schema mapping relates a source schema with a target schema via ...