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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You can put "shortcuts for shortcuts"

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You can put Keyboard keys as shortcuts for desktop shortcuts.
To do this follow these steps :

1) Right click on the shortcut.
2) Go to properties.
3) Click once on the "Shortcut Key" bar.
4) Press any alphabet that you want to use as Shortcut Key.
5) Press OK Now to open that shortcut,
Press CTRL+ALT+"the alphabet".

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