Intelligent Enterprise article by Ralph Kimball that encourages you to ask questions when sales pitches fly in the face of conventional wisdom.

DM Review article by Douglas Hackney discussing conditions that can merit a federated BI architecture.

DM Review article by Douglas Hackney that addresses federated data warehouse architecture.

DM Review article by Colin White about federated data warehouses.

DM Review article by Douglas Hackney that looks in more detail at how you build a federated BI architecture.