1000 search results - page 30 / 200 » Provenance for Aggregate Queries |
IDEAS
2008
IEEE
14 years 4 months ago
2008
IEEE
Peer-to-peer database systems (P2PDBs) aim at providing database services with node autonomy, high availability and loose coupling between participating nodes by building the DBMS...
SSDBM
2008
IEEE
14 years 4 months ago
2008
IEEE
Abstract. In recent years, there is an increasing need to monitor k nearest neighbor (k-NN) in a road network. There are existing solutions on either monitoring k-NN objects from a...
SAC
2008
ACM
13 years 9 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
2001
IEEE
14 years 11 months ago
2001
IEEE
We study the problem of approximately answering aggregation queries using sampling. We observe that uniform sampling performs poorly when the distribution of the aggregated attrib...
ICDM
2010
IEEE
13 years 7 months ago
2010
IEEE
-- In this paper, we put forward our approach for answering aggregated queries over imprecise data using domain specific taxonomies. A new concept we call the weighted hierarchical...