PODS
2003
ACM
14 years 11 months ago
2003
ACM
PODS
2003
ACM
14 years 11 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 11 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 11 months ago
2003
ACM
PODS
2003
ACM
14 years 11 months ago
2003
ACM
PODS
2003
ACM
14 years 11 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 11 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 11 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 11 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 11 months ago
2002
ACM