What is a manhattan database? [closed]

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A friend of mine was interviewing for a data warehouse and Business Object role But he was asked about the Manhattan database?

I have Googled "Manhattan database" and even searched for it on Bing and Yahoo but have found no relevant information.

Any help would be greatly appreciated!

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Perhaps this? Manhattan Data Warehouse

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manhattan is the distributed db from twitter https://blog.twitter.com/2014/manhattan-our-real-time-multi-tenant-distributed-database-for-twitter-scale

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The closest thing may be Microsoft project Madison, which is an auto-scalable data-warehouse appliance. The interviewer may have mixed-up Manhattan with Madison (Square Garden) which happens to be located in Manhattan.

Or, maybe he/she did it on purpose to see how good was your friend at data cleaning and conforming. :)