Meet Allison & Tim
Your AI coaches
Practice coding interviews out loud with real-time voice coaching. Your code actually runs.
Start Part 1 to unlock your next challenge
Pop-up Clinic Check-in Table
Also known as: Time-Travel Table with Partial Updates
You're building a check-in system where records can be queried at any point in time—even after updates or deletions. The challenge is handling partial updates and soft deletes while keeping history intact. Interviewers use this to see if you can model temporal state cleanly.
Meet Allison & Tim
Your AI coaches
Practice coding interviews out loud with real-time voice coaching. Your code actually runs.
Desktop required to run this problem
StrongYes runs real code + tests in a desktop editor. Mobile is view-only for now, so you can’t start this here. Sorry about that — email yourself a link and pick it up on your computer.
Start Part 1 to unlock your next challenge
Desktop required
Sorry — mobile can’t run the editor + tests yet. Email yourself a link to continue on desktop.