Last Tuesday Stripe added an optional discount field
A medium Pipeline Design mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Pipeline Design
- Difficulty
- medium
Interview Prompt
Last Tuesday Stripe added an optional discount field. By Wednesday morning the curated fct_orders table silently double-counted discounts; three downstream teams discovered the breakage at different times because nobody was monitoring fct_orders. Apply the section's pipelines-as-products framing and declare the contract for fct_orders so the next schema drift is caught before consumers see broken data.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your pipeline design solution with real code execution
- Get instant feedback and a hire/no-hire decision