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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MAKE WINDOWS GREET YOU WITH A CUSTOM VOICE MESSAGE AT STARTUP!

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Click on Start Navigate to All Programs,Accessories and Notepad.
Copy and paste the exact code given below.
========================================================================
Dim speaks, speech
speaks="Welcome to your PC,
Username"
Set speech=CreateObject("sapi.spvo
ice")
speech.Speak speaks
========================================================================
Replace Username with your own name.Click on File Menu, Save As, select All Types in Save as Type option,and save the file as Welcome.vbs or "*.vbs".
Copy the saved file.
Navigate to C:\Documents and Settings\All Users\Start Menu\Programs\Startup (in Windows XP)
or to C:\Users\ User-Name\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup (in Windows 7 and Windows Vista)
(if C: is your System drive).
Paste the file Same process for windows 8 users too.
Now next tym wen ur pc wil be started it wil welcome u in itz own voice.

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