1000 search results - page 55 / 200 » Provenance for Aggregate Queries |
DOLAP
1999
ACM
14 years 2 months ago
1999
ACM
This paper describes the Phoenix system, which loads a data warehouse and then reports against it. Between the raw atomic data of the source system and the business measures prese...
VLDB
2004
ACM
14 years 3 months ago
2004
ACM
We consider the problem of resource sharing when processing large numbers of continuous queries. We specifically address sliding-window aggregates over data streams, an important...
DKE
2007
13 years 10 months ago
2007
Histogram techniques have been used in many commercial database management systems to estimate a query result size. Recently, it has been shown that they are very effective to su...
PODS
2005
ACM
14 years 10 months ago
2005
ACM
The traditional statistical assumption for interpreting histograms and justifying approximate query processing methods based on them is that all elements in a bucket have the same...
ICDE
2010
IEEE
14 years 4 months ago
2010
IEEE
— Previous studies on supporting keyword queries in RDBMSs provide users with a ranked list of relevant linked structures (e.g. joined tuples) or individual tuples. In this paper...