389 search results - page 6 / 78 » A Framework for the Investigation of Aggregate Functions in ... |
IDEAS
2000
IEEE
13 years 11 months ago
2000
IEEE
Most operations of the relational algebra or SQL - like projection with duplicate elimination, join, ordering, group by and aggregations - are efficiently processed using a sorted...
DBPL
2005
Springer
13 years 8 months ago
2005
Springer
XQuery is known to be a powerful XML query language with many bells and whistles. For many common queries we do not need all the expressive power of XQuery. We investigate the eff...
SEBD
1997
13 years 8 months ago
1997
Abstract. Multidimensional databases are large collections of data, often historical, used for sophisticated analysis oriented to decision making. This activity is supported by an ...
ICDE
2004
IEEE
14 years 8 months ago
2004
IEEE
In the emerging area of sensor-based systems, a significant challenge is to develop scalable, fault-tolerant methods to extract useful information from the data the sensors collec...
VLDB
1995
ACM
13 years 10 months ago
1995
ACM
In this paper we introduce generalized projections (GPs), an extension of duplicateeliminating projections, that capture aggregations, groupbys, duplicate-eliminating projections ...