How does LINQ translate to SQL?

Short answer: What limitations are there? EF Core translates LINQ queries into SQL using expression trees. Only supported LINQ operators and expressions can be translated. Limitations: Certain C# methods or complex expressions cannot be translated and cause runtime exceptions. Client-side evaluation may occur, which can hurt performance. Use .AsEnumerable() to switch to client-side processing intentionally.

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.