NoSQL Interview Questions

1. Can you explain the difference between SQL and NoSQL databases?
2. How do NoSQL databases differ from traditional relational databases?
3. Can you explain the main types of NoSQL databases (key-value, document, columnar, graph)?
4. How does data modeling differ in a NoSQL database compared to a relational database?
5. Can you explain the concept of horizontal scaling in NoSQL databases?
6. How do NoSQL databases handle data consistency and transactions?
7. Can you explain the use of map-reduce in NoSQL databases?
8. How do you design a schema for a NoSQL database?
9. Can you explain the use of denormalization in NoSQL databases?
10. How do you handle data migration from a relational database to a NoSQL database?
11. Can you explain the use of sharding in NoSQL databases?
12. How do you ensure data security in a NoSQL database?
13. Can you explain the use of indexing and querying in NoSQL databases?
14. How do you handle data backup and recovery in a NoSQL database?
15. Can you explain the use of caching in NoSQL databases?
16. How do you handle data aggregation and reporting in a NoSQL database?
17. Can you explain the use of real-time streaming and event-driven architecture in NoSQL databases?
18. How do you handle data integration and data warehousing with NoSQL databases?
19. Can you explain the use of different NoSQL databases in specific use cases (e.g. MongoDB for document storage, Cassandra for high-availability)?
20. How do you monitor and troubleshoot performance issues in a NoSQL database?