142 search results - page 12 / 29 » Consistent Query Answers in Inconsistent Databases |
PODS
1998
ACM
13 years 11 months ago
1998
ACM
We study the complexity of the problem of answering queries using materialized views. This problem has attracted a lot of attention recently because of its relevance in data integ...
DATAMINE
1998
13 years 7 months ago
1998
Many applications of knowledge discovery and data mining such as rule discovery for semantic query optimization, database integration and decision support, require the knowledge t...
EUSFLAT
2009
13 years 5 months ago
2009
This paper proposes an approach aimed at obviating empty answers for a family of conjunctive queries involving Boolean or fuzzy value constraints. Contrary to the approaches based ...
CIKM
2009
Springer
14 years 7 days ago
2009
Springer
Answering queries using views is a well-established technique in databases. In this context, two outstanding problems can be formulated. The first one consists in deciding whethe...
AAAI
1996
13 years 9 months ago
1996
Many applications of knowledge discovery require the knowledge to be consistent with data. Examples include discovering rules for query optimization, database integration, decisio...