549 search results - page 4 / 110 » Data Expiration and Aggregate Queries |
VLDB
1998
ACM
13 years 10 months ago
1998
ACM
Small Materialized Aggregates (SMAs for short) are considered a highly flexible and versatile alternative for materialized data cubes. The basic idea is to compute many aggregate ...
Publication
This paper presents the Scalable On-Line Execution algorithm (SOLE, for short) for continuous and on-line evaluation of concurrent continuous spatio- temporal queries over data str...
MASS
2010
13 years 4 months ago
2010
Clustering and data aggregation in wireless sensor networks improves scalability, and helps the efficient use of scarce resources. Yet, these mechanisms also introduce some securi...
SSDBM
2006
IEEE
14 years 5 days ago
2006
IEEE
Many applicationsstore data items for a pre-determined, finite length of time. Examples include slidingwindows over on-line data streams, where old data are dropped as the window...
SIGMOD
2005
ACM
14 years 6 months ago
2005
ACM
A defining characteristic of continuous queries over on-line data streams, possibly bounded by sliding windows, is the potentially infinite and time-evolving nature of their input...