2228 search results - page 386 / 446 » On Database Theory and XML |
SAT
2004
Springer
15 years 3 months ago
2004
Springer
Kolaitis and Vardi pointed out that constraint satisfaction and conjunctive query containment are essentially the same problem. We study the Boolean conjunctive queries under a mor...
WWW
2010
ACM
15 years 3 months ago
2010
ACM
This paper addresses the problem of identifying redundant data in large-scale service-oriented information systems. Specifically, the paper puts forward an automated method to pi...
DEXAW
2002
IEEE
15 years 2 months ago
2002
IEEE
Cultural institutions increasingly see the need to play an important role in the lifelong learning of citizens. Recent trends, particularly in science museums, have been toward su...
DEXAW
2000
IEEE
15 years 2 months ago
2000
IEEE
Given their simple nature, the success of keyword based retrieval systems is astonishing. Although these methods seemingly only process words (and their word counts), they rely on...
PODS
2000
ACM
15 years 2 months ago
2000
ACM
An estimation algorithm for a query is a probabilistic algorithm that computes an approximation for the size (number of tuples) of the query. One class of estimation algorithms us...