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» Consistent Query Answers in Inconsistent Databases
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DAGSTUHL
1998
15 years 29 days ago
A Practical Approach to Hypothetical Database Queries
Hypothetical queries are queries embedding hypotheses about the database. The embedded hypothesis in a hypothetical query indicates, so to say, a state of the database intended for...
Henning Christiansen, Troels Andreasen
DBISP2P
2003
Springer
70views Database» more  DBISP2P 2003»
15 years 4 months ago
A Robust Logical and Computational Characterisation of Peer-to-Peer Database Systems
In this paper we give a robust logical and computational characterisation of peer-to-peer (p2p) database systems. We first define a precise model-theoretic semantics of a p2p sys...
Enrico Franconi, Gabriel M. Kuper, Andrei Lopatenk...
ICDE
2006
IEEE
134views Database» more  ICDE 2006»
16 years 29 days ago
ISOMER: Consistent Histogram Construction Using Query Feedback
Database columns are often correlated, so that cardinality estimates computed by assuming independence often lead to a poor choice of query plan by the optimizer. Multidimensional...
Utkarsh Srivastava, Peter J. Haas, Volker Markl, M...
FQAS
1998
Springer
133views Database» more  FQAS 1998»
15 years 3 months ago
Estimating the Quality of Databases
Abstract. With more and more electronic information sources becoming widely available, the issue of the quality of these often-competing sources has become germane. We propose a st...
Amihai Motro, Igor Rakov
DEXA
2003
Springer
108views Database» more  DEXA 2003»
15 years 4 months ago
Repairing Inconsistent Merged XML Data
XML is rapidly becoming one of the most adopted standard for information representation and interchange over the Internet. With the proliferation of mobile devices of communication...
Wilfred Ng