The Sales Architecture

A medium Data Modeling interview practice problem on DataDriven. Write and execute real data modeling code with instant grading.

Domain

Data Modeling

Difficulty

medium

Seniority

L4

Problem

Our BI team needs a dimensional model to analyze sales performance. We sell physical products through an online marketplace. Analysts need to slice revenue by product, seller, customer, geography, and time. The current OLTP database is normalized and queries are too slow for dashboards. Design the star schema.

Summary

Numbers are easy. Making them queryable at scale is the real job.

Practice This Problem

Solve this Data Modeling problem with real code execution. DataDriven runs your solution and grades it automatically.