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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HOW TO TURN ON YOUR PC IN JUST 10 SECONDS

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So you wanna know how to turn the pc on in 10 seconds
Here's what you have to do to turn your pc on in 10 seconds
Click on the start button then press R it will take u to Run well go to run and type Regedit
press enter this will open Registery Editor now look for the key
HKEY_LOACAL_MECHINE\SYSTEM\Cur rentControlSet\Contr ol\ContentIndex
Now in there find the Key Called "Startup Delay"
Double Click On It Now where its Base Click Decimal
Now its Default Value Is 4800000 (75300:hexadecimal)
Change The Value To 40000
Here u go u have done it now close the Registery Editor and Restart Your Computer
You'll See The Result

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