10 search results - page 1 / 2 » Tractable query answering and rewriting under description lo... |
JAPLL
2010
13 years 8 months ago
2010
Answering queries over an incomplete database w.r.t. a set of constraints is an important computational task with applications in fields as diverse as information integration and ...
ICDT
2009
ACM
14 years 11 months ago
2009
ACM
This article deals with consistent query answering to conjunctive queries under primary key constraints. The repairs of an inconsistent database db are obtained by selecting a max...
TOCL
2008
13 years 10 months ago
2008
AMW
2010
13 years 11 months ago
2010
We address the problem of answering conjunctive queries over knowledge bases, specified by sets of first-order sentences called tuple-generating dependencies (TGDs). This problem i...
DLOG
2008
14 years 16 days 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...