Explain the concept of Connection Pooling in ADO.NET.

Short answer: Connection Pooling is a technique used to optimize the performance of database connections in ADO.NET.

Explain a bit more

When an application opens a connection to a database, the connection is not always closed immediately.

Example code

"Server=myServerAddress;Database=myDataBase;Integrated

Real-world example (ShopNest)

ShopNest opens a SqlConnection only for the query, then disposes it (using). Connection pooling reuses physical connections automatically.

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.