Marco posted on CEP (Complex Event Processing) and GPS (Global Positioning System) recently and his examples really show the difference, to me, between event rules and decision management. He listed some great examples of rules that belong in your event processing environment - they are about events. For instance:
- Trigger when vehicle enters zone B
- Trigger when zone C contains more than 30 vehicles.
- Trigger when vehicle xyz has not arrived to zone D between 3-6 am
Event rules are not the same as the rules behind business decisions, even if the same language can be used to express both. One is tied to the events and the event handling system, one is not.