Data Engineering for Beginners by Chisom Nwokwu (ISBN 9781394325412, Wiley 2025)
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The appendix is a flashcard deck for interview prep. Nwokwu organized sample questions across five areas that match the interview stages from Chapter 13. I will retell the highlights here. Use this as a self-test before your next round.
The second half of Chapter 4 in Data Engineering for Beginners by Chisom Nwokwu (ISBN 9781394325412) is where SQL goes from “filter a table” to “actually analyze data across tables.” This is the part that makes SQL feel like a real data engineering skill.
Data Engineering for Beginners by Chisom Nwokwu (ISBN 9781394325412) picks up right where the database fundamentals chapter left off. Chapter 4 is where SQL stops being abstract and starts feeling like a real tool you will use every day as a data engineer.
Book: Data Engineering for Beginners
Author: Chisom Nwokwu
ISBN: 9781394325412
Chapter 3 zooms in on storage. After the life cycle overview, Nwokwu focuses on databases, the tool data engineers spend a huge amount of time with. This chapter is dense but practical. It covers what databases are, how relational and NoSQL systems differ, and how to pick the right one for your project.
This is Part 1 of Chapter 4. Part 2 covers joins and advanced queries.
Chapter 4 is where Nwokwu puts SQL in your hands. No more theory. You write queries, you get results, you learn by doing. If Chapter 3 was about understanding what databases are, this chapter is about talking to them.