The JSON Files That Became a Data Mart
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
- L5
Interview Prompt
You are given three sample JSON data files from a client's source system: one for orders with embedded customer details and line items, one for products with nested category hierarchies, and one for shipments with address objects and status history arrays. Design a relational data mart from these inputs.
Summary
Three semi-structured inputs. One queryable warehouse.
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