An employee can have multiple skills and speak multiple languages, independently
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 employee can have multiple skills and speak multiple languages, independently. Storing (employee, skill, language) creates false combinations. Decompose into two separate multi-valued fact tables to achieve 4NF.
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