Which database does Facebook & Google use ?

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.

What is Keyword Analysis ?


Keyword Analysis: Keyword Analysis is the part of On Page Optimization. Before starting any other activity first of all SEO person will choose Keywords which best describes your website. Keywords are the basic requirements for On Page Optimization.

How to Choose Keywords ?
You can choose keywords with the help of different keyword tools.
Various Free Keyword Tools
There are many keyword tools are available. Some of important one as follows. All these tools are free keyword tools.

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Which database does Facebook & Google use ?