297 search results - page 32 / 60 » On the Decidability of Consistent Query Answering |
FOIKS
2008
Springer
13 years 10 months ago
2008
Springer
Abstract In this paper we present a new rule-based approach for consistency preserving view updating in deductive databases. Based on rule transformations performed during schema d...
FOIKS
2004
Springer
14 years 6 days ago
2004
Springer
When two or more databases are combined into a global one, integrity may be violated even when each database is consistent with its own local integrity constraints. Efficient metho...
KDD
2004
ACM
14 years 9 months ago
2004
ACM
In this paper we provide a fast, data-driven solution to the failing query problem: given a query that returns an empty answer, how can one relax the query's constraints so t...
DKE
2006
13 years 8 months ago
2006
As several mature implementations of data warehousing systems are fully operational, a crucial role in preserving their up-to-dateness is played by the ability to manage the chang...
CIE
2011
Springer
12 years 8 months ago
2011
Springer
Automatic classes are classes of languages for which a finite automaton can decide whether a given element is in a set given by its index. The present work studies the learnabilit...