11 search results - page 2 / 3 » From Database Repair Programs to Consistent Query Answering ... |
CASCON
2004
13 years 6 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...
CL
2000
Springer
13 years 9 months ago
2000
Springer
Abstract. We consider the problem of specifying and computing consistent answers to queries against databases that do not satisfy given integrity constraints. This is done by simul...
LPNMR
2005
Springer
13 years 10 months ago
2005
Springer
We introduce a declarative approach for a coherent composition of autonomous databases. For this we use ID-logic, a formalism that extends classical logic with inductive definitio...
LPNMR
2009
Springer
13 years 11 months ago
2009
Springer
Abstract. We study the complexity of consistency checking and query answering on incomplete databases for languages ranging from non-recursive Datalog to disjunctive Datalog with n...
DLOG
2008
13 years 7 months ago
2008
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...