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The Churner Who Came Back
A hard 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
- hard
- Seniority
- senior, staff
Interview Prompt
We have a global subscription business with hundreds of millions of subscribers across multiple plan tiers and regions. Subscribers can upgrade, downgrade, pause, cancel, and re-subscribe. Finance and product analytics need a data model that supports churn analysis, revenue reporting, and plan mix reporting. Design the data model.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your data modeling solution with real code execution
- Get instant feedback and a hire/no-hire decision