27 search results - page 2 / 6 » Beyond simple aggregates: indexing for summary queries |
VLDB
1995
ACM
13 years 8 months ago
1995
ACM
In this paper we introduce generalized projections (GPs), an extension of duplicateeliminating projections, that capture aggregations, groupbys, duplicate-eliminating projections ...
VLDB
2001
ACM
13 years 9 months ago
2001
ACM
In this paper we focus on the following problem in information management: given a large collection of recorded information and some knowledge of the process that is generating th...
IPSN
2003
Springer
13 years 10 months ago
2003
Springer
High-level query languages are an attractive interface for sensor networks, potentially relieving application programmers from the burdens of distributed, embedded programming. In ...
DOLAP
2004
ACM
13 years 10 months ago
2004
ACM
Accurate summary data is of paramount concern in data warehouse systems; however, there have been few attempts to completely characterize the ability to summarize measures. The su...
SIGMOD
1998
ACM
13 years 9 months ago
1998
ACM
The Relational On-Line Analytical Processing (ROLAP) is emerging as thedominant approach in data warehousing with decision support applications. In order to enhance query performa...