Two Sources of Truth
A medium Pipeline Design mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- Pipeline Design
- Difficulty
- medium
- Seniority
- mid
Interview Prompt
Design the pipeline that migrates a retail chain's on-prem orders database to a cloud warehouse over a months-long cutover: a one-time bulk load of the existing 2 TB, ongoing writes kept within minutes of the live source, and proof the two systems agree before reporting flips over.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Draw your pipeline on the design canvas: sources, transforms, storage and checks
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision