492 search results - page 7 / 99 » Computing aggregations in database query languages |
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 ...
ICPR
2008
IEEE
14 years 11 months ago
2008
IEEE
Querying any information system requires the knowledge of some formal language, making it inaccessible to computer-na?ve potential users. We propose a new intuitive querying mecha...
CORR
2012
Springer
12 years 5 months ago
2012
Springer
This paper presents a query evaluation technique for positive relational algebra queries with aggregates on a representation system for probabilistic data based on the algebraic s...
TOCL
2008
13 years 9 months ago
2008
SIGMOD
2005
ACM
14 years 10 months ago
2005
ACM
Window queries are proving essential to data-stream processing. In this paper, we present an approach for evaluating sliding-window aggregate queries that reduces both space and c...