750 search results - page 66 / 150 » Aggregates in Possibilistic Databases |
ICDE
2006
IEEE
14 years 4 months ago
2006
IEEE
In this paper, we study SQL queries with aggregate subqueries that share common tables and conditions with the outer query. While several approaches can deal with such queries, th...
PODS
2009
ACM
14 years 10 months ago
2009
ACM
We consider the problem of deciding query equivalence for a conjunctive language in which queries output complex objects composed from a mixture of nested, unordered collection ty...
SIGMOD
2008
ACM
14 years 10 months ago
2008
ACM
Database searches are usually performed with query languages and form fill in templates, with results displayed in tabular lists. However, excitement is building around dynamic qu...
SIGMOD
2003
ACM
14 years 10 months ago
2003
ACM
We present an update on the status of the Cougar Sensor Database Project, in which we are investigating a database approach to sensor networks: Clients "program" the sen...
PVLDB
2008
13 years 9 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 ...