Your question is Combine Multi-Indexed Data. 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).
Given a multi-indexed dataset, how would you combine data for data mining?
Explain how you would align indexes, handle differing levels or names, preserve data integrity, and validate the combined result. Describe the execution steps, trade-offs, and checks you would use before making the data available for mining.
