A friend was meeting with for any data warehouse and Business Object role But he was requested concerning the Manhattan database?

I've Researched "Manhattan database" as well as looked for this on Bing and Yahoo but have discovered no relevant information.

Any help could be greatly appreciated!

Possibly this? Manhattan Data Warehouse

The nearest factor might be Microsoft project Madison, that is a car-scalable data-warehouse appliance. The interviewer might have mixed-up Manhattan with Madison (Square Garden) which is situated in Manhattan.

Or, maybe he/she made it happen purposely to determine how good was your friend at data cleaning and conforming. :)