Podcast
Questions and Answers
What is the estimated global data generation volume in zettabytes by 2025?
What is the estimated global data generation volume in zettabytes by 2025?
Which of the following is NOT one of the 5 Vs of Big Data?
Which of the following is NOT one of the 5 Vs of Big Data?
What percentage of global data is estimated to be stored in relational databases?
What percentage of global data is estimated to be stored in relational databases?
Which platform generates 347,222 posts per minute?
Which platform generates 347,222 posts per minute?
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What is the primary use of a Data Lake?
What is the primary use of a Data Lake?
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How does HDFS (Hadoop Distributed File System) ensure data reliability?
How does HDFS (Hadoop Distributed File System) ensure data reliability?
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Which of the following data types is NOT considered unstructured?
Which of the following data types is NOT considered unstructured?
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What is the expected daily data generation by Internet users?
What is the expected daily data generation by Internet users?
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Study Notes
Big Data
- Data is crucial for making informed decisions in all business aspects.
- By 2025, the world is predicted to generate 175 zettabytes of data.
- In 2010, data generation was much lower, estimated at 2 zettabytes.
- Every day, internet users produce approximately 2.5 million gigabytes of data.
- The last two years saw a dramatic rise in data generation (90% of total).
The 5 Vs of Big Data
- Velocity: Data comes in various forms (batch, near-real-time, real-time, streams).
- Variety: Data can be structured, unstructured, or semi-structured.
- Volume: Data can span terabytes or even more, comprising records, transactions, tables, and files.
- Veracity: Data trustworthiness, authenticity, origin, reputation, and accountability are crucial aspects.
- Value: Data contains potential for discovering statistical patterns, events, correlations, and hypothetical insights.
Data Sources
- Facebook: Holds 500,000 tweets per minute.
- Twitter: Generates 500,000 tweets per minute.
- Instagram: Posts 347,000 images per minute.
- Internet of Things (IoT): 75 million connected devices generate massive data streams.
Data Storage
- Less than 20% of global data is stored in relational databases.
- Banks, hospitals, and customer data are examples of critical data often stored in relational databases.
- Unstructured data like text, images, and videos make up about 80% of global data.
- Big Data Architectures and NoSQL databases are used to store this 80%.
Big Data Storage
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HDFS (Hadoop Distributed File System): Divides data into smaller blocks (128MB or 256MB) on multiple servers for efficient distribution and high redundancy.
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Data Lakes: Centralized repositories for diverse raw data (structured, semi-structured, and unstructured), stored as is, enabling broad data analysis potential.
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NoSQL: A database ideal for large volumes and variety of unstructured data. Flexible and fast, well-suited for data that is constantly changing (e.g., social media, IoT).
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Description
Explore the fundamental concepts of big data, including its significance in decision-making across business sectors. The quiz covers the 5 Vs of big data: Velocity, Variety, Volume, Veracity, and Value, along with impressive statistics regarding data generation and sources. Test your knowledge on the importance of data in our digital age.
