In addition, while Exadata handles all workloads in one system, IBM has come out with 3 separate database platforms based upon varying workloads.

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Alliance Tech's founders, Roger Lewis, 48, Timothy Blackwood, 46, and Arturo Borrego, 44, get lots of questions about invasion of privacy but insist that their system avoids snooping by storing any personal information in a separate database.

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We are collecting a large amount of data when we know if someone has the disease or not and we train the database to learn how to separate out the true symptoms of the disease from other factors.

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The project, which involves researchers at five separate European research labs, has produced the database as well as software that robots can run to connect to and quiz Rapyuta.

BBC: Web-based 'brain' for robots goes live

Google has announced its intention to merge some of its information with DoubleClick's database, but it says it will continue to separate users' names and personal details.

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The public database lists two different addresses for a Michael Adebolajo at two separate student residence halls at the University of Greenwich, in southeast London, dating back to 2004 and 2005.

WSJ: Police Arrest Two New Suspects in U.K. Killing