2063 search results - page 7 / 413 » Containment of Aggregate Queries |
ADBIS
1999
Springer
13 years 11 months ago
1999
Springer
Abstract. Overlapping Linear Quadtrees is a structure suitable for storing consecutive raster images according to transaction time (a database of evolving images). This structure s...
PVLDB
2008
13 years 7 months ago
2008
Given a dataset containing sensitive personal information, a statistical database answers aggregate queries in a manner that preserves individual privacy. We consider the problem ...
DOLAP
2000
ACM
13 years 11 months ago
2000
ACM
We consider the view maintenance problem in a web-based environment, in which clients query information from databases, stored in the form of materialized data warehouses, without...
CIKM
2008
Springer
13 years 9 months ago
2008
Springer
Answering queries over ontologies is an important issue for the Semantic Web. Aggregate queries were widely studied for relational databases but almost no results are known for ag...
PODS
2007
ACM
14 years 7 months ago
2007
ACM
Query containment has been studied extensively for fragments of