1782 search results - page 175 / 357 » Processing Queries over Distributed XML Databases |
PODS
2006
ACM
14 years 10 months ago
2006
ACM
In this paper, we give a simple scheme for identifying approximate frequent items over a sliding window of size n. Our scheme is deterministic and does not make any assumption on ...
DMSN
2005
ACM
14 years 9 days ago
2005
ACM
In this paper we present the Threshold Join Algorithm (TJA), which is an efficient TOP-k query processing algorithm for distributed sensor networks. The objective of a top-k query...
ICDE
2008
IEEE
14 years 11 months ago
2008
IEEE
Functional testing of a query language is a challenging task in practice. In order to reveal errors in the query processing functionality, it is necessary to verify the actual res...
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...
VLDB
2004
ACM
14 years 3 months ago
2004
ACM
Cost-based XML query optimization calls for accurate estimation of the selectivity of path expressions. Some other interactive and internet applications can also benefit from suc...