Data” is an essential part of
life. In life absolutely everything entails data, in fact “Data is life and
life is data”.
With the rapid and
vivid development in technology, it is without doubts that data has gained much
attention from all fields ranging from the IT sector, agricultural sector,
health sector, financial sector etc. we are in an age known as an “informative
age” where everything is basically computational and technologically driven.
Due to created computer systems that aid in the collection of these data, tremendous
amount of data has been collected over time.
Today, there are
lots of data that has been collected over various platforms like media(texts,
pictures audios and videos),business transactions, scientific data, military intelligence,
medical data, personal data, satellite sensing, games, digital media, virtual
worlds, memos(e-mail messages), website repositories(www) etc. Surfaced with
huge collections of data, new ideas has to be created to help make managerial
choices, these ideas are automatic summarization of data, extractions of needed
stored information and discovery of patterned raw data which leads to the term “DATA
Currently, over 2 billion people worldwide are connected to the internet, and
over 5 billion individuals own mobile phones, it is estimated that by 2020, 50
billion devices would be connected to the internet, at this point estimated
data production would be 44 times greater, as information is transferred at
light speed on optic fibre and wireless network, the volume of data produced
increases. The fast growth rate of the large data generates numerous challenges
such as the rapid growth of data, transfer speed, diverse data, security etc.
Hence this article
comprehensively surveys and classifies the various features of big data,
including its nature, definitions, volume, management, analysis and security.