what Is Big Data?

OverView:

“90% of the world’s data was generated in the last few years.”
Due to the advent of new technologies, devices, and communication means like social networking sites, the amount of data produced by mankind is growing rapidly every year. The amount of data produced by us from the beginning of time till 2003 was 5 billion gigabytes. If you pile up the data in the form of disks it may fill an entire football field. The same amount was created in every two days in 2011, and in every ten minutes in 2013. This rate is still growing enormously. Though all this information produced is meaningful and can be useful when processed, it is being neglected.

What is Big Data?

Big Data is a collection of large datasets that cannot be processed using traditional computing techniques. It is not a single technique or a tool, rather it involves many areas of business and technology.

Thus Big Data includes huge volume, high velocity and an extensible variety of data. The data in it will be of three types.
 Structured data: Relational data.
 Semi-Structured data: XML data.
 Unstructured data: Word, PDF, Text, Media Logs.

Benefits of Big Data:
 Using the information kept in the social network like Facebook, the marketing agencies are learning about the response for their campaigns, promotions, and other advertising mediums.
  Using the information in the social media like preferences and product perception of their consumers, product companies and retail organisations are planning their production.
 Using the data regarding the previous medical history of patients, hospitals are providing better and quick service.

Big Data Technologies:
Big data technologies are important in providing more accurate analysis, which may lead to more concrete decision-making resulting in greater operational efficiencies, cost reductions, and reduced risks for the business.

To harness the power of big data, you would require an infrastructure that can manage and process huge volumes of structured and unstructured data in real-time and can protect data privacy and security.

There are various technologies in the market from different vendors including Amazon, IBM, Microsoft, etc., to handle big data. While looking into the technologies that handle big data, we examine the following two classes of technology:

Operational Big Data:

These include systems like MongoDB that provide operational capabilities for real-time, interactive workloads where data is primarily captured and stored.
NoSQL Big Data systems are designed to take advantage of new cloud computing architectures that have emerged over the past decade to allow massive computations to be run inexpensively and efficiently. This makes operational big data workloads much easier to manage, cheaper, and faster to implement.
Some NoSQL systems can provide insights into patterns and trends based on real-time data with minimal coding and without the need for data scientists and additional infrastructure.

Analytical Big Data:

These includes systems like Massively Parallel Processing (MPP) database systems and MapReduce that provide analytical capabilities for retrospective and complex analysis that may touch most or all of the data.
MapReduce provides a new method of analysing data that is complementary to the capabilities provided by SQL and a system based on MapReduce that can be scaled up from single servers to thousands of high and low-end machines.

These two classes of technology are complementary and frequently deployed together.

Big  Data  Challenges:
The major challenges associated with big data are as follows:
 Capturing data
 Curation
 Storage
 Searching
 Sharing
Transfer
Analysis
 Presentation
To fulfil the above challenges, organisations normally take the help of enterprise servers.




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