POS Sales Data Warehouse

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

senior

Interview Prompt

We're a retail chain with 500 stores. Every transaction at every register flows into our data warehouse. We need a dimensional model for sales analytics, sliceable by store, product, time, and promotion. Can you design the star schema?

How This Interview Works

1. Read the vague prompt (just like a real interview)
2. Ask clarifying questions to the AI interviewer
3. Write your data modeling solution with real code execution
4. Get instant feedback and a hire/no-hire decision