79 search results - page 7 / 16 » Aggregate queries in peer-to-peer OLAP |
GEOINFO
2007
13 years 11 months ago
2007
In this paper we are interested in storing and perform OLAP queries about various aggregate trajectory properties. We consider a data stream environment where a set of mobile objec...
ICDE
1999
IEEE
14 years 11 months ago
1999
IEEE
Range sum queries on data cubes are a powerful tool for analysis. A range sum query applies an aggregation operation (e.g., SUM) over all selected cells in a data cube, where the ...
DOLAP
2000
ACM
14 years 2 months ago
2000
ACM
Being able to efficiently answer arbitrary OLAP queries that aggregate along any combination of dimensions over numerical and categorical attributes has been a continued, major co...
ICDT
2001
ACM
14 years 2 months ago
2001
ACM
In fast OLAP applications it is often advantageous to provide approximate answers to range queries in order to achieve very high performances. A possible solution is to inquire sum...
DAWAK
2003
Springer
14 years 3 months ago
2003
Springer
Data Warehouses provide sophisticated tools for analyzing complex data online, in particular by aggregating data along dimensions spanned by master data. Changes to these master da...