What is the Aggregation framework in MongoDB?

Short answer: And count occurrences { $sort: { count: -1 } } // Sort by count in descending order ]); nd count occurrences { $sort: { count: -1 } } // Sort by count in descending order ]); And count occurrences { $sort: { count: -1 } } // Sort by count in descending order ]); nd count occurrences { $sort: { count: -1 } } // Sort by count in descending order ]);

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.