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BigData / Hadoop basics

What is Big Data?

Big data refers to the large amount of data, a collection of large datasets that is infeasible to handle/process using existing computer technology/programmming model.

Thus Big Data includes huge volume, high velocity and extensible variety of data, categorized into three types.

Structured data : Relational data, JSON

Semi Structured data : XML.

Unstructured data : Word, PDF, Text and Logs.

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