An orders table references customers through a customer_id foreign key
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
An orders table references customers through a customer_id foreign key. Every order must belong to exactly one customer. An employees table references managers through a manager_id foreign key, but the CEO has no manager. Design both tables with the correct nullability on each foreign key.
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