1000 search results - page 14 / 200 » Provenance for Aggregate Queries |
EUC
2006
Springer
14 years 1 months ago
2006
Springer
In most wireless sensor networks, applications submit their requests as queries and wireless sensor network transmits the requested data to the applications. However, most existing...
ICDT
1999
ACM
14 years 2 months ago
1999
ACM
Abstract. In this paper we present a new approach for studying aggregations in the context of database query languages. Starting from a broad de nition of aggregate function, we ad...
DMDW
2000
13 years 11 months ago
2000
A common optimization technique in the OLAP application domain is the use of summary aggregate data. For an appropriate support of analysis hot spots, we propose a query based agg...
ICDT
2001
ACM
14 years 2 months ago
2001
ACM
Withthe proliferation of database views and curated databases, the issue of data provenance where a piece of data came from and the process by which it arrived in the database is b...
PODS
2007
ACM
14 years 10 months ago
2007
ACM
We show that relational algebra calculations for incomplete databases, probabilistic databases, bag semantics and whyprovenance are particular cases of the same general algorithms...