Service Reliability Tiers
A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
Classify services by uptime into reliability tiers: 99.9%+ is 'Platinum', 99.0 to 99.89% is 'Gold', 95.0 to 98.99% is 'Silver', below 95% is 'Bronze'. For each tier, show the minimum, average, and maximum latency. Exclude any checks where the status mentions 'maintenance'. Results should go from highest average latency to lowest.
Summary
Reliability tiers. Based on uptime.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your sql solution with real code execution
- Get instant feedback and a hire/no-hire decision