116 search results - page 19 / 24 » Database querying under changing preferences |
CORR
2010
Springer
13 years 6 months ago
2010
Springer
We study active integrity constraints and revision programming, two formalisms designed to describe integrity constraints on databases and to specify policies on preferred ways to...
PR
2002
13 years 7 months ago
2002
Search by Object Model -- finding an object inside a target image -- is a desirable and yet difficult mechanism for querying multimedia data. An added difficulty is that objects c...
PVLDB
2010
13 years 5 months ago
2010
Supporting legacy applications when the database schema evolves represents a long-standing challenge of practical and theoretical importance. Recent work has produced algorithms a...
ER
2006
Springer
13 years 11 months ago
2006
Springer
Recently, a number of relational-based approaches for detecting the changes to XML data have been proposed to address the scalability problem of main memory-based approaches (e.g.,...
DEXA
1998
Springer
13 years 11 months ago
1998
Springer
Abstract. To achieve acceptable query response times in data warehouse environments, the data have to be pre-aggregated according to the need of the applications and stored redunda...