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100+ Big Data Interview Questions and Answers 2025

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Define Big Data and Explain the Seven Vs of Big Data. Big Data is a collection of large and complex semi-structured and unstructured data sets that have the potential to deliver actionable insights using traditional data management tools. Data Processing: This is the final step in deploying a big data model.

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Top 21 Big Data Tools That Empower Data Wizards

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Data scientists and engineers typically use the ETL (Extract, Transform, and Load) tools for data ingestion and pipeline creation. For implementing ETL, managing relational and non-relational databases, and creating data warehouses, big data professionals rely on a broad range of programming and data management tools.

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SQL for Data Engineering: Success Blueprint for Data Engineers

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According to the 8,786 data professionals participating in Stack Overflow's survey, SQL is the most commonly-used language in data science. Despite the buzz surrounding NoSQL , Hadoop , and other big data technologies, SQL remains the most dominant language for data operations among all tech companies.

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Top 6 Big Data and Business Analytics Companies to Work For in 2025

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CRN editorial team, has appreciated this challenge taken up by various big data companies and identified the best big data and business analytics companies that are innovating out-of-the-box data management, business analytics and infrastructure services and technologies in the big data market.

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HCL Hadoop Interview Questions

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billion USD, 95000 professionals across diverse nationalities in 31 countries- India’s original IT garage startup, HCL, uses a data driven methodology to migrate ETL jobs into corresponding hadoop jobs. HCL has adopted hadoop as a viable alternative to reduce cost and speed up processing. With an annual revenue of $6.5

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How to Learn Big Data Step by Step from Scratch in 2025?

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Introduction to Big Data Big data combines structured, semi-structured, and unstructured data collected by organizations to glean valuable insights and information using machine learning, predictive modeling , and other advanced analytical applications. Worried about finding good Hadoop projects with Source Code ?

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Hadoop Use Cases

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Hadoop is beginning to live up to its promise of being the backbone technology for Big Data storage and analytics. Companies across the globe have started to migrate their data into Hadoop to join the stalwarts who already adopted Hadoop a while ago. Hadoop runs on clusters of commodity servers.

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