The Gift Economy
A medium Data Modeling mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- Data Modeling
- Difficulty
- medium
- Seniority
- L5
Interview Prompt
We run a livestream platform where creators go live and viewers drop in and out, fire off chat, and send paid virtual gifts that fund creator payouts. The same broadcast produces viewer visits, chat, and gift purchases at wildly different volumes, and every past gift must keep paying out the exact dollar amount it was worth the moment it was sent, even after finance reprices the gift catalog. Design the data model behind payouts, content recommendations, and engagement analytics.
Summary
Someone goes live, thousands tune in, chat explodes, and virtual gifts start flying.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Draw your data model on the schema canvas: tables, keys and relationships
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision