Your question is Relational Database Fundamentals Overview. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Relational databases are the foundation of many analytics, application, and transaction systems. Interviewers ask this question to confirm that you understand how structured data is organized and queried before moving into SQL problem-solving.
Explain your basic understanding of relational databases. In your answer, cover:
Keep your answer at an introductory-to-practical level. The interviewer is not looking for deep internals, but they do expect clear definitions, correct terminology, and a simple example showing how related tables work together.