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
- L5
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.
Summary
They cancelled. They came back. The report has to tell both stories correctly.
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