How do you perform data migration in SQL or NoSQL databases?

Short answer: Data migration involves transferring data between systems or platforms, often when changing database engines or moving to the cloud. Steps:

Real-world example (ShopNest)

ShopNest’s SQL Server database stores customers, products, and orders. Good indexes and clear foreign keys keep checkout queries fast and safe.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.