Experience Level
5-8 Years
Real interview questions with expert answers, plain-English explanations, and practical examples. (53 questions)
Oracle
Database Administrator
Databases
How does a B-tree index actually speed up a query, and when does it stop helping?
Meta
Backend Developer
System Design
How would you design a rate limiter for an API, and how do token bucket and sliding window actually differ?
IBM
Data Engineer
Data Engineering