Free Big Data Analytics Course with Certificate – Great Learning

Big Data Analytics Course

Big Data Analytics is the statistical analysis of a large volume of data sets in parallel, distributed environments. This course on Big Data gives you a complete understanding of emerging Big data technology and career growth in Big data. It is well designed for beginners as well as professionals.

Big data has significantly impacted industries today, and it is a cutting-edge technology used in every business field.

Nowadays, companies are using big data technologies to make their businesses more informative and make business decisions by enabling data analysts and other professionals to analyze high volumes of data. 

Introduction to Big Data

Let‘s talk about data first, before going to the term 'Big Data'.

What is data?

Data plays a very essential and significant role in this technological world. It is defined as any piece of information that refers to or represents conditions, ideas, or objects. Examples are alphabets, symbols, numbers, etc. Data can be students' information, or it can be pictures posted on social media. Data is limitless, present everywhere in the surroundings, and it is increasing day by day.

Now, What is Big Data?

It is defined as the large amount of data that cannot be processed and stored with the traditional system, i.e., Relational Database Management System. Today, we deal with heterogeneous data developed at an alarming rate by multiple sources. This data consists of structured, unstructured, & semi-structured data that can be used for research or analysis.

Why is there a need for Big Data?

Data is growing day by day, so it has become difficult to store and process these huge amounts of data.
Therefore, the following points describe the need for big data.

  • * Large Volume of Data 
  • * Heterogeneous Data (which is structured, unstructured, and semi-structured data)
  • * Traditional Database Systems cannot maintain this vast amount of data.
  • * Building a single system is complex and not cost-effective.
  • * The Relational Database Management System is very expensive.

5 V’s of Big Data :

The 5 V’s of Big Data are as follow:

1.Volume – It refers to the amount of data that deals with the enormous size of Petta bytes. Credit card transactions or tweets in a day are common examples of the high volume of data. Thus, Big data helps in storing and processing this high volume of data.

2.Variety- It is defined as the type of data ‘generating and transferring.

Data present in three formats which are as follow:

  • i. Structured Data – The data which exists in a tabular format with a relationship between the different rows and columns. It has a fixed structure or schema.
  • Examples of structured data are SQL databases or Excel files. This data is the most traditional form of data storage.
  • ii. Semi-Structured Data – Semi-structured data is raw data, which does not exist in tabular format i.e rows and columns. JSON, XML,, and some NoSQL databases like MongoDB that store data in ‘JSON format’ are the common examples of semi-structured data. 
  • iii. Unstructured Data – Unstructured data is schema-less, highly unpredictable, and cannot be represented in a specific deterministic format.

Common examples of unstructured data are audio, video files, images, or NoSQL databases. 

3.Velocity- It refers to the speed at which large volumes of data are being generated, collected, and analyzed. Every day the number of emails, Twitter messages, photos, videos-clips, etc are lighting speeds around the world. Every second of everyday data is increasing.

4.Veracity- It refers to the uncertainty of available data i.e data is valid or not. It arises due to the high volume of data that produces incompleteness and inconsistency. It is the quality or trustworthiness of data that is how accurate is all data?

5.Value – It refers to the worth of the data being taken out. Also, turning data into value. Having an endless amount of data is one thing, but unless it can be turned into the value it is feckless. Therefore, Valuable data is needed.

Big Data Technologies

There are various frameworks in big data technologies to solve the problems of Big Data Storage and processing. Such frameworks are Apache Hadoop, Apache Kafka, Apache Spark, Apache Samza, Apache Hive, etc. Let’s take a look at these frameworks:

Big Data Frameworks

  • Apache Hadoop – Apache Hadoop is an open-source framework that allows the storage and processing of a enormous volume of data in a distributed & parallel order.
  • Apache Kafka – Apache Kafka is a batch processing framework with a streaming platform.
  • Apache Spark – Apache Spark is a data processing framework. It is 100 times faster to process data than MapReduce.
  • Apache Samza – Apache Samza is a streaming data processing tool.
  • Apache Hive – Apache Hive is a distributed Data Warehouse software.
  • Apache Cassandra – Apache Cassandra is a decentralized NoSQL Database Management system.

Applications of Big Data –

Today Big data is everywhere. It is almost in every sector. It has become an essential part of the analysis and is required for the growth of businesses.

Big data has a large range of applications. Following are the applications of Big Data.

1) Social Networking sites

All social networking sites like- Facebook, Linkedin, Twitter, Instagram, etc are generating a huge amount of heterogeneous data on a day to day basis because these all websites include billions of users worldwide. 

2) Share Market

Share Market produces a high-volume of data through its daily transaction worldwide.

3) Weather Station

Big data technologies play a vital role in weather forecasting. A massive volume of data is provided on the climate, and an average is extracted to predict the weather. This can be lucrative to predict natural calamities such as floods etc.

4) E-commerce sites 

Sites like Amazon, Flipkart, Myntra, Bigbasket produce large amounts of logs from which customers buying trends can be traced.

5) Telecom company

Big Data has a very great impact on Telecom companies. Big telecom giants like Airtel, Jio, and Vi observe the customer trends and releases their plans accordingly. These big companies store information about their million users.

6) Fraud Detection

Big data technologies help in fraud detection and prevention. It also helps in risk analysis and management

7) Healthcare 

Big data technology is very important to the healthcare sector. All the information of patients, their health plans, their insurance plans, and their other records are stored and processed with big data. By analyzing huge volumes of structured & unstructured data, healthcare providers can give lifesaving diagnoses or treatments immediately.

8) Public Sector

Big data technology also plays an important role in the government as well as the public sector. It gives a lot of facilities in power investigation, economic promotion, etc.

Government has a record of more than 1.21 billion citizens with UID or Aadhaar cards. This large volume of data is analyzed and stored to find useful information from the data.

Banking, Educations, Agriculture, Advertising and Marketing, Insurance and Travel, and Tourism are the other common applications of Big Data.

Big Data has proved one of the fast-growing technologies in today’s world. It is a boon because it can also be merged with other technologies like machine learning, artificial intelligence (AI), and other cloud technologies.