Your question is Handle Concurrency in Data Updates. 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).
How would you handle concurrency / simultaneous updates to the same records in your application?
Asked in the Techno-managerial stage. It was listed among technical topics alongside many-to-many schema design.
Explain how you would preserve correctness when multiple application instances read and modify the same record at the same time. Cover the concurrency strategy, transaction boundaries, conflict handling, and how you would test and monitor the design.