I got an update on the Oracle Business Rules product recently. Oracle is an interesting company - they have the components of decision management but do not yet have them under a single umbrella. For instance, they have in-database data mining (blogged about here), the Real Time Decisions (RTD) engine, event processing rules and so on. Anyway, this update was on business rules.
This article discusses why business intelligence is often too closely associated with data warehousing and should be replaced by a concept such as decision intelligence, which could be considered a modern version of earlier decision support systems.
M. Golfarelli, S. Rizzi, и I. Cella. DOLAP '04: Proceedings of the 7th ACM international workshop on Data warehousing and OLAP, стр. 1--6. New York, NY, USA, ACM Press, (2004)