Business Process Models:
A completed transform often achieves a business milestone and a new state for some operational business thing(s). Example: claimant notified.
In fact models (structured business vocabularies) such states are represented by fact types, for example, claimant is notified
(or claimant has been notified
if you prefer). A fact model literally represents what things the business can know (remember) about completed transforms and other operational business events.
Business rules indicate which states are allowed or required. They should not reference business processes or business tasks by name, just the states they try to achieve. For example, a business rule might be: A claimant may be notified that a claim has been denied only if the specific reason(s) for denial have been determined.
This post excerpted from our new book (Oct, 2011) Building Business Solutions: Business Analysis with Business Rules. See: http://www.brsolutions.com/b_building_business_solutions.php