Event processing in mobile and active database systems using broadcasts

The integration of active database technology into mobile database systems allows one to limit the transfer of data between mobile computers and the stationary network. In order to employ such active database mechanisms, the rule processing component of traditional active database systems needs to be modified. The paper introduces a new model for event processing and presents a new algorithm for the composition of complex events in a mobile database environment. Furthermore, the model also takes into account the possibility of broadcast data. To validate the feasibility of the model, a prototype has been built using object oriented technology.