Internet-based information technologies have considerable potential for improving collaboration in professional communities. In this paper, we explain the concept of user-driven sp...
As main memory capacity increases, more of the database read requests will be satis ed from the bu er system. Consequently, the amount of disk write operations relative to disk re...
In a database system, read operations are much more common than write operations, and consequently, database systems have been read optimized. As the size of main memory increases...
We show how to implement a calculus with higher-order subtyping and subkinding by replacing uses of implicit subsumption with explicit coercions. To ensure this can be done, a pol...
This paper proposes a strategy for parallel composite event detection in Active database systems (DBS). Up to now, the detection is sequential and totally synchronized, and thus p...