Your question is Partitioning and Indexing Strategy. 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).
Describe how you would implement data partitioning and indexing in a large dataset.
Explain how you would choose partition keys, design indexes, avoid excessive small partitions, and validate query performance. Discuss trade-offs for batch loads, incremental updates, data skew, partition maintenance, and changing query patterns.
