2063 search results - page 29 / 413 » Containment of Aggregate Queries |
ICDE
2005
IEEE
14 years 11 months ago
2005
IEEE
Resource Description Framework (RDF) is a rapidly expanding web standard. RDF databases attempt to track the massive amounts of web data and services available. In this paper, we ...
ADHOCNOW
2008
Springer
13 years 11 months ago
2008
Springer
This paper presents a novel method for optimizing sliding window based continuous queries. We deal with two categories of aggregation operations: stepwise aggregation (e.g. COUNT) ...
WMCSA
2002
IEEE
14 years 2 months ago
2002
IEEE
We show how the database community’s notion of a generic query interface for data aggregation can be applied to ad-hoc networks of sensor devices. As has been noted in the senso...
DASFAA
2007
IEEE
14 years 4 months ago
2007
IEEE
Abstract. In this paper, we explore the feature of sharing partial results of multiple queries to reduce the total number of messages incurred. Those queries sharing their partial ...
IS
2002
13 years 9 months ago
2002
In this paper, we explore the possibility of transforming queries with minimum and maximum predicates into equivalent queries that can be computed more efficiently. The main contr...