429 search results - page 14 / 86 » Query Planning for Continuous Aggregation Queries over a Net... |
ADBIS
2000
Springer
13 years 11 months ago
2000
Springer
Queries involving aggregation are typical in a number of database research areas, such as data warehousing, global information systems and mobile computing. One of the main ideas ...
VLDB
2005
ACM
14 years 29 days ago
2005
ACM
We extend the OLAP data model to represent data ambiguity, specifically imprecision and uncertainty, and introduce an allocation-based approach to the semantics of aggregation qu...
JISE
2007
13 years 7 months ago
2007
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
Given a set of objects P and a query point q, a k nearest neighbor (k-NN) query retrieves the k objects in P that lie closest to q. Even though the problem is well-studied for sta...
PODS
2002
ACM
14 years 7 months ago
2002
ACM
We consider conjunctive queries with arithmetic comparisons over multiple continuous data streams. We specify an algorithm for determining whether or not a query can be evaluated ...