What are the different entity states?

Short answer: EF Core uses these EntityState values: State Description Added New entity to be inserted into the database Modified Entity has been changed and will be updated Deleted Entity will be deleted from the database Detached Entity is not tracked by the context Unchange No changes have been made since it was loaded You can check/set the state via: context.Entry(entity).State = EntityState.Modified;

Real-world example (ShopNest)

ShopNest’s order service uses EF Core to save an Order and its line items in one SaveChangesAsync() call inside a transaction.

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.