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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Top 30 Highest Earning Websites

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Top 30 Highest Earning Websites in 2012
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Online Market is one of the most famous method to make money. All the website owner's dream is to take their site into top and earn some money through it. In this list, today we will see the top 30 websites which has earned the most money in 2012. In this top 30 ranking, Google has ranked #1 most money earning website of 2012 and Amazon and Yahoo ranked in next 2nd and 3rd positions.
 
Here Top 30 Websites:-
1. Google
Founders : Larry Page and Sergey Brin
Income per sec :$691.29
Average income of the year : $22,000,000,000
 
2. Amazon
Founders : Jeff Bezos
Income per sec :$607.05
Average income of the year : $19,200,000,000
 
3. Yahoo
Founders : Jerry Yang and David Filo
Income per sec :$228.31
Average income of the year : $7,200,000,000


 
4. eBay
Founders : Pierre Omidyar
Income per sec :$199.45
Average income of the year : $6,300,000,000
 
5. Msn/Live
Founders : Nathan Myhvoid
Income per sec :$102.00
Average income of the year : $3,200,000,000
 
6. Paypal
Founders : Luke Nosek, Max Levchin and Peter Thiel
Income per sec :$71.40
Average income of the year : $2,250,000,000
 
7. iTunes
Founders : Jeff Robin
Income per sec :$60.00
Average income of the year : $1,900,000,000
 
8. Rueters
Founders : Marshal Vace
Income per sec :$60.00
Average income of the year : $1,900,000,000
 
9. Priceline
Founders : Jesse Fink
Income per sec :$59.6
Average income of the year : $1,850,000,000
 
10. Expedia
Founders : Added Mark Schroeder
Income per sec :$46.00
Average income of the year : $1,450,000,000
 
11. NetFlix
Founders : Reed Hastings
Income per sec :$38.00
Average income of the year : $1.100.000,000
 
12. Travelocity
Founders : Terry Jones
Income per sec :$38.00
Average income of the year : $1.100.000,000
 
13. Zappos
Founders : Nick Swinmurn
Income per sec :$31.70
Average income of the year : $1,000,000,000
 
14. Hotels
Founders : David Litman
Income per sec :$31.70
Average income of the year : $1,000,000,000
 
15. AOL
Founders : Erik Prince
Income per sec :$30.50
Average income of the year : $960,000,000
 
16. Orbitz
Founders : Jeff Katz
Income per sec :$28.00
Average income of the year : $870,000,000
 
17. Overstock
Founders : Robert Brazell
Income per sec :$27.00
Average income of the year : $834,000,000
 
18. Myspace
Founders : Tom Anderson
Income per sec :$25.00
Average income of the year : $800.000.000
 
19. Skype
Founders : Niklas Zennstrom
Income per sec :$18.00
Average income of the year : $550,840,000
 
20. Sohu
Founders : Zhang Chaoyang
Income per sec :$14.00
Average income of the year: $430,000,000
 
21. Buy.com
Founders : Robb Brock
Income per sec :$12.68
Average income of the year : $400,000,000
 
22. StubHub
Founders : Eric Baker
Income per sec : $13.00
Average income of the year : $430,000,000
 
23. Alibaba
Founders : Jack Ma
Income per sec : $10.00
Average income of the year: $315,000,000
 
24. Facebook
Founders : Mark Zuckerberg
Income per sec :$9.50
Average income of the year : $300,000,000
 
25. YouTube
Founders : Chad Hurley, Jawed Karim and Steve Chen
Income per sec :$9.50
Average income of the year : $300,000,000
 
26. Blue Nile
Founders : Mark Vadon
Income per sec :$9.40
Average income of the year: $295,000,000
 
27. Tripadvisor
Founders : Stephen Kaufer
Income per sec :$8.20
Average income of the year : $250,000,000
 
28. Getty Images
Founders : Mark Getty
Income per sec :$7.40
Average income of the year : $230,000,000
 
29. Bidz
Founders : Garry Itkin
Income per sec :$6.70
Average income of the year : $200,000,000
 
30. NYTimes
Founders : Henry Jarvis Raymond
Income per sec :$6.00
Average income of the year : $175,000,000

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