349 search results - page 19 / 70 » The Complexity of Querying External Memory and Streaming Dat... |
ICDE
2005
IEEE
14 years 9 months ago
2005
IEEE
We address the problem of executing continuous multiway join queries in unpredictable and volatile environments. Our query class captures windowed join queries in data stream syst...
DBPL
2003
Springer
14 years 28 days ago
2003
Springer
The increased usage of mobile devices coupled with an unprecedented demand for information has pushed the scalability problem of pull-based data service to the focus. A broadcast ...
ISCI
2008
13 years 7 months ago
2008
This paper considers the theory of database queries on the complex value data model with external functions. Motivated by concerns regarding query evaluation, we first identify re...
VLDB
2007
ACM
14 years 1 months ago
2007
ACM
A top-k query retrieves the k highest scoring tuples from a data set with respect to a scoring function defined on the attributes of a tuple. The efficient evaluation of top-k q...
CIKM
2009
Springer
14 years 2 months ago
2009
Springer
We study the problem of continuous monitoring of top-k queries over multiple non-synchronized streams. Assuming a sliding window model, this general problem has been a well addres...