98 search results - page 4 / 20 » A Formal Model for the Problem of View Selection for Aggrega... |
PVLDB
2008
13 years 6 months ago
2008
OLAP servers based on relational backends typically exploit materialized aggregate tables to improve response times of complex analytical queries. One of the key problems in this ...
DOLAP
2000
ACM
13 years 11 months ago
2000
ACM
A multidimensional database can be seen as a collection of multidimensional cubes, from which information is usually extracted by aggregation; aggregated data can be calculated ei...
HT
2005
ACM
14 years 14 days ago
2005
ACM
This paper introduces a new method for linking the world view of the search engine user community with that of the search engine itself. This new method is based on collecting and...
SAC
2008
ACM
13 years 6 months ago
2008
ACM
We address aggregate queries over GIS data and moving object data, where non-spatial information is stored in a data warehouse. We propose a formal data model and query language t...
ICDE
2007
IEEE
14 years 1 months ago
2007
IEEE
Moving objects databases (MOD) have been receiving increasing attention from the database community in recent years, mainly due to the wide variety of applications that technology...