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Design an append-only order event log

A medium Data Modeling mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
Data Modeling
Difficulty
medium

Interview Prompt

Design an append-only order event log. Each action on an order (created, paid, shipped, delivered) is a new immutable row. Include the order_id, event_type, event_data, and occurred_at timestamp.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your data modeling solution with real code execution
  4. Get instant feedback and a hire/no-hire decision

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