PODS
2003
ACM
14 years 7 months ago
2003
ACM
PODS
2003
ACM
14 years 7 months ago
2003
ACM
We formalize the problem of maintaining time-decaying aggregates and statistics of a data stream: the relative contribution of each data item to the aggregate is scaled down by a ...
PODS
2003
ACM
14 years 7 months ago
2003
ACM
In this paper we study the following problem. Given a database and a set of queries, we want to find, in advance, a set of views that can compute the answers to the queries, such ...
PODS
2003
ACM
14 years 7 months ago
2003
ACM
PODS
2003
ACM
14 years 7 months ago
2003
ACM
PODS
2003
ACM
14 years 7 months ago
2003
ACM
In this paper we propose a new bottom-up query evaluation method for stratified deductive databases based on the Magic Set approach. As the Magic Sets rewriting may lead to unstra...
PODS
2003
ACM
14 years 7 months ago
2003
ACM
In recent years, the problem of indexing mobile objects has assumed great importance because of its relevance to a wide variety of applications. Most previous results in this area...
PODS
2003
ACM
14 years 7 months ago
2003
ACM
The sliding window model is useful for discounting stale data in data stream applications. In this model, data elements arrive continually and only the most recent N elements are ...
PODS
2003
ACM
14 years 7 months ago
2003
ACM
Normalization as a way of producing good database designs is a well-understood topic. However, the same problem of distinguishing well-designed databases from poorly designed ones...
PODS
2002
ACM
14 years 7 months ago
2002
ACM