151 search results - page 13 / 31 » On the Containment Problem for Queries in Conjunctive Form w... |
ADBIS
2004
Springer
14 years 28 days ago
2004
Springer
Repairing a database means making the database consistent by applying changes that are as small as possible. Nearly all approaches to repairing have assumed deletions and insertion...
PODS
1997
ACM
13 years 11 months ago
1997
ACM
We consider the problem of answering datalog queries using materialized views. The ability to answer queries using views is crucial in the context of information integration. Prev...
ICDT
2005
ACM
14 years 1 months ago
2005
ACM
We study the problem of rewriting queries using views in the presence of access patterns, integrity constraints, disjunction, and negation. We provide asymptotically optimal algori...
VL
2000
IEEE
13 years 12 months ago
2000
IEEE
The accurate formulation of boolean expressions is a notorious problem in programming languages and database query tools. This paper studies the ways that untrained users naturall...
ICIP
2003
IEEE
14 years 25 days ago
2003
IEEE
We have been developing new relevance feedback algorithms for Content-based Image Retrieval (CBIR) that allow the user to achieve more flexible query. In conjunction with the new...