1482 search results - page 251 / 297 » An Algebra for XML Query |
ICDE
2010
IEEE
14 years 4 months ago
2010
IEEE
Abstract— Developing a full-fledged cost-based XQuery optimizer is a fairly complex task. Nowadays, there is little knowledge concerning suitable cost formulae and optimization ...
GEOS
2005
Springer
14 years 2 months ago
2005
Springer
This paper analyses reported difficulties in spatial data retrieval from Internet portals, based on results from an empirical survey. The analysis reveals the problems which cause ...
VLDB
2004
ACM
14 years 2 months ago
2004
ACM
We consider the problem of resource sharing when processing large numbers of continuous queries. We specifically address sliding-window aggregates over data streams, an important...
IEAAIE
2001
Springer
14 years 1 months ago
2001
Springer
Abstract. This paper presents AROM, a new object-based knowledge representation system. AROM is original in two ways. Firstly, in addition to classes, knowledge representation in A...
CORR
2010
Springer
13 years 9 months ago
2010
Springer
Multidimensional databases support efficiently on-line analytical processing (OLAP). In this paper, we depict a model dedicated to multidimensional databases. The approach we prese...