While there are numerous cloud platforms to implement any Big data solution, the AWS is the industry gold standard that is the most popular and the most in demand cloud solution that is sought for. The others being Azure and Google cloud.
Following types of big data skillsets the candidate should be readily able to talk about in conext of their experience :
- Black Box Data : It is a component of helicopter, airplanes, and jets, etc. It captures voices of the flight crew, recordings of microphones and earphones, and the performance information of the aircraft.
- Social Media Data : Social media such as Facebook and Twitter hold information and the views posted by millions of people across the globe.
- Stock Exchange Data : The stock exchange data holds information about the ‘buy’ and ‘sell’ decisions made on a share of different companies made by the customers.
- Power Grid Data : The power grid data holds information consumed by a particular node with respect to a base station.
- Transport Data : Transport data includes model, capacity, distance and availability of a vehicle.
- Search Engine Data : Search engines retrieve lots of data from different databases.
Benefits of Big Data
Big data is really critical to our life and its emerging as one of the most important technologies in modern world. Follow are just a few benefits which are very much known to all of us:
- 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 organizations 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
This includes 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
This 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 analyzing 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.
Operational vs. Analytical Systems
|Latency||1 ms – 100 ms||1 min – 100 min|
|Concurrency||1000 – 100,000||1 – 10|
|Access Pattern||Writes and Reads||Reads|
|End User||Customer||Data Scientist|
|Technology||NoSQL||MapReduce, MPP Database|
Big Data Challenges
The major challenges associated with big data are as follows:
- Capturing data