How would you debug a production issue related to EF Core in a SignalR Real-Time application?

Short answer: EF Core maps C# entities to tables, tracks changes, and translates LINQ to SQL. Migrations version schema; Include/ThenInclude load graphs.

Real-world example (ShopNest)

In a ShopNest .NET service, explain the idea in one sentence, show where it sits in the request/data flow, then give one production trade-off.

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.