We consider an environment where distributed data sources continuously stream updates to
a centralized processor that monitors continuous queries over the distributed data …

This article addresses the performance of distributed database systems. Specifically, we
present an algorithm for dynamic replication of an object in distributed systems. The …

Caching approximate values instead of exact values presents an opportunity for
performance gains in exchange for decreased precision. To maximize the performance …

Abstract Event-Condition-Action (ECA) Rules are proposed as a general mechanism for
providing active database capabilities in support of applications that require timely response …

Strict consistency of replicated data is infeasible or not required by many distributed
applications, so current systems often permit stale replication, in which cached copies of …

(57) ABSTRACT A road furniture item or another type of road object is detected by at least
one sensor. An associated geographic position associated with the road furniture item or …

Conventional passive database management systems are inadequate for time-constrained
applications, because they either do not provide timely response to critical situations or …

Despite the widespread and growing use of asynchronous copies to improve scalability,
performance and availability, this practice still lacks a firm semantic foundation. Applications …

We present two distributed algorithms for dynamic replication of a data-item in
communication networks. The algorithms are adaptive in the sense that they change the …

The problem of updating materialized views in distributed database systems is discussed.
An architecture and detailed procedures for updating a collection of remote views with …