The Float
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
- Seniority
- mid
Interview Prompt
A card issuer needs a warehouse that reconciles what a cardholder can spend right now against what has actually posted to their account. Every swipe creates a temporary hold that later settles, often for a different amount and sometimes never, and a cardholder can dispute a charge after it posts. Model the schema that supports available-credit checks, statement generation, and dispute tracking across accounts that each belong to a customer.
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