Your question is SQL vs NoSQL Decision. 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).
When would you opt for SQL versus NoSQL databases?
Asked in the Round 1 (EM) stage. Explain how you would make this choice in an ML system, including data shape, access patterns, consistency, scalability, latency, and operational constraints. Address whether the answer changes across offline training data, feature storage, metadata, and online inference paths.
Do not assume a particular product, workload, scale, or cloud provider. Start by stating the questions you would ask before choosing.