Technical interview questions

Now that we have explored essential concepts of data warehouses and data lakes, it’s time to put your knowledge to the test with technical interview questions. This section will cover a range of interview questions that assess your understanding of data warehouse and data lake principles. As we dive into these questions, prepare to showcase your expertise and problem-solving skills:

• Question 1: What is the primary purpose of a data warehouse?

  Answer: The primary purpose of a data warehouse is to store, organize, and consolidate large volumes of structured and historical data to support BI and data analytics.

• Question 2: How does a data lake differ from a data warehouse?

  Answer: Unlike a data warehouse, a data lake stores data in its raw format without the need for predefined schemas. It accommodates various data types and allows more flexible data exploration and analysis.

• Question 3: What is the role of ETL processes in a data warehouse...