Intelligent creation of notification events in information systems

摘要

An important feature of information systems is the ability to inform users about changes of the stored information. Therefore, systems have to 'know' what changes a user wants to be informed about. This is well known from the field of publish-/subscribe architectures. In this paper, we propose a solution for information system designers of how to extend their information model in a way that the notification mechanism can consider semantic knowledge when determining which parties to inform. Two different kinds of implementations are introduced and evaluated: one based on aspect oriented programming (AOP), the other one based on traditional database triggers. The evaluation of both approaches leads to a combined approach preserving the advantages of both techniques, using Model Driven Architecture (MDA) to create the triggers from a UML model enhanced with stereotypes.