The Balance Always Reconciles
An easy 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
- easy
- Seniority
- L4
Interview Prompt
We're a consumer lending company offering personal loans, auto loans, and mortgages, and each of those products carries its own standard interest rate and term length. A customer can hold several loans at once, and every payment lands as its own transaction against a loan. Design a schema that lets the operations team read each loan's outstanding balance from those payments and the risk team flag delinquent accounts.
Summary
Money out, payments back. The balance has to be exact.
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