A/B Experiment Assignment Schema

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

L5

Problem

We run product experiments across our consumer app. When a user is assigned to an experiment, we need to track which variant they saw and when. Analysts need to compute metric lifts between variants. Design the data model to support experimentation analysis.

Summary

One user, one experiment, one variant. No exceptions.

Practice This Problem

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