Can views be updated in SQL? Under what conditions?

Short answer: Yes, views can be updated in SQL, but there are conditions for when this is possible: Updatable Views: A view is updatable if it: Is based on a single table. Does not contain aggregation functions like COUNT(), AVG(), or SUM().

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.