3 search results - page 1 / 1 » On the First-Order Reducibility of Unions of Conjunctive Que... |
EDBTW
2006
Springer
13 years 8 months ago
2006
Springer
ICDT
2005
ACM
13 years 10 months ago
2005
ACM
We consider the problem of retrieving consistent answers over databases that might be inconsistent with respect to some given integrity constraints. In particular, we concentrate o...
PODS
2004
ACM
14 years 5 months ago
2004
ACM
We study the problem of answering queries over sources with limited access patterns. Given a first-order query Q, the problem is to decide whether there is an equivalent query whi...