A company identifies customers by email, but emails change
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
Interview Prompt
A company identifies customers by email, but emails change. Design a customers table with a stable surrogate primary key instead of using a business attribute as the identifier.
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