Practice problems across 75+ categories
Practice problems frequently asked at Database • 324 problems | 120 Easy | 135 Medium | 61 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 91 | Employees Whose Manager Left the Company | Easy | Database |
| 92 | Employees With Deductions | Medium | Database |
| 93 | Employees With Missing Information | Easy | Database |
| 94 | Evaluate Boolean Expression | Medium | Database |
| 95 | Exchange Seats | Medium | Database |
| 96 | Fill Missing Data | Easy | Database |
| 97 | Find Active Users | Medium | Database |
| 98 | Find All Unique Email Domains | Easy | Database |
| 99 | Find Books with No Available Copies | Easy | Database |
| 100 | Find Bursty Behavior | Medium | Database |
| 101 | Find Candidates for Data Scientist Position | Easy | Database |
| 102 | Find Candidates for Data Scientist Position II | Medium | Database |
| 103 | Find Category Recommendation Pairs | Hard | Database |
| 104 | Find Circular Gift Exchange Chains | Hard | Database |
| 105 | Find Cities in Each State | Easy | Database |
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