Database Query Results:?

Short answer: When querying a database, the results often come back in the form of a collection (like a list of rows). The Iterator Pattern is used to iterate over these rows to access the data, rather than exposing the internal structure of how the data is retrieved from the database.

Real-world example (ShopNest)

Use a GoF pattern in ShopNest only when it removes duplication or makes a change safer—explain the problem it solves in the interview.

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.