infosys · data-scientist

SQL & Databases

Learn queries, joins, indexing, and database optimization.

Medium: 2

Concept Refresher

Read the concept summary before diving into questions to answer with clarity.

Topic Roadmap

learn

WW

WW

Practice Questions

Design a system for real-time collaborative document editing. Focus on conflict resolution and latency.

realtime, crdt, websockets

How would you design a rate limiter that supports burst traffic and quick lookups?

rate-limiting, token-bucket, redis

Test Your Knowledge

Take a quick quiz to validate your understanding.