Moving Active Functionality from Centralized to Open Distributed Heterogeneous Environments 

(M. Cilia; C. Bornhovd; A. Buchmann; Databases and Distributed Systems
Group, Department of Computer Science Darmstadt University of
Technology – Darmstadt, Germany)

From the introduction:
For
example, consider the following business rule: ”when the volume of corn
falls below 1200 tons, and the corn comes from Euroland, and Euro/US$
is under 0.8 then bid for all at 2.30 US$ per ton, and also notify the
manager”. Involved events and data are coming from diverse sources,
here and also the execution of actions is performed on different (sub-)
systems. Observe that events and actions are not necessarily directly
related with database operations.
In such scenarios, the required
active functionality should be moved outside of the active database
system by offering a flexible service that runs decoupled from the
database, and that can be combined in many different ways and used in a
variety of environments. A service-based architecture seems to be
appropriate, in which an active functionality (ECA rule) service can be
seen as a composition of other services, like event detection, event
composition, condition evaluation, and action execution. – goto
originally Posted to cep.weblogger.com by David Soul on 2/20/04; 12:09:41 AM
in the CEP section

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