Which database does Facebook & Google use ?

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Facebook has moved to a NoSQL database named HBase. Google uses their own system called BigTable. What is NoSQL ? NoSQL is a term used to designate databases which differ from classic relational databases. NoSQL database management systems are useful when working with a huge quantity of data when the data's nature does not require a relational model. The data can be structured, but NoSQL is used when what really matters is the ability to store and retrieve great quantities of data, not the relationships between the elements.
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Windows 7 shortcuts

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1) For the Easy way of Opening the Ease of access center, Press Windows+U.
2) For Hiding or Showing the Desktop , Press Windows+D.
3) For Opening an Search results Window, Press Windows+F.
4) To minimize the all Windows, press the Windows+M.
5) To lock an computer Press Windows+L.
6) To open the Run Dialog Box, Press Windows+R.
7) To open the Windows Explorer, Press Windows+E.
8) To change the view or Zoom in the Windows Explorer, Press Ctrl +(Mouse scroll wheel )
9) To see any Gadgets are used in your Desktop by Aeropeek, Press Windows+Space.
10) To get focus on the First Task Bar, Press Windows+T.
11) To move the Focus on the last task bar, Press Windows+Shift+T

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