73 search results - page 6 / 15 » Repair localization for query answering from inconsistent da... |
CASCON
2004
13 years 9 months ago
2004
For several reasons a database may not satisfy certain integrity constraints (ICs), for example, when it is the result of integrating several independent data sources. However, mo...
SCCC
2005
IEEE
14 years 1 months ago
2005
IEEE
Databases may not satisfy integrity constraints (ICs) for several reasons. Nevertheless, in most of the cases an important part of the data is still consistent wrt certain desired...
DBPL
2005
Springer
14 years 1 months ago
2005
Springer
We study peer-to-peer ðP2PÞ data integration, where each peer models an autonomous system that exports data in terms of its own schema, and data interoperation is achieved by me...
DBISP2P
2003
Springer
14 years 26 days ago
2003
Springer
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...
DBPL
2005
Springer
2005
Springer
Complexity and Approximation of Fixing Numerical Attributes in Databases Under Integrity Constraints
14 years 1 months ago
Consistent query answering is the problem of computing the answers from a database that are consistent with respect to certain integrity constraints that the database as a whole ma...