What's the difference between a data warehouse and a data lake?
~4 min by voice
How to approach it
This checks whether the candidate understands the fundamental difference between the two architectures: what is stored and in what form, when the schema is applied, what it's built on and whom it serves. Plus whether they see the risks of a lake and the modern lakehouse compromise.
The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.