Question library
Questions from real interviews. Drill any of them by voice in a couple of minutes, with an interviewer, a score and feedback.
What data quality checks would you set up for a table that gets updated every day?JuniorThe business complains that the numbers in dashboards regularly turn out to be wrong, and they find out about it from users. Design a data quality control system for the data warehouse.Mid-levelThe warehouse has two thousand tables, and the business regularly finds out about broken data before the data team does. How would you build a data quality control system?Senior