LINQ

The first demonstration for the day was without doubt the most anticipated one amongst most people here. God himself, Anders Hejlsberg gave a demonstration of the latest LINQ technology. Wow, just wow, LINQ is going to revolutionize the way we think of accessing and modifying data through .NET. We no longer have to use the old bulky SQL statements that were prone to errors due to lack of type safety, runtime compilation/execution. Instead we can write SQL-like statements inside our normal code and return various collections, matching the database structure, giving us total type safety, very readable code and excellent performance as LINQ itself ensures that our queries are optimised for the exact query we're running.

You really should do yourself a favor and take a look at the LINQ project.