Inside that other Development tool that I use, I found an interesting link to Luca Bolognese's blogpost about Linq to SQL. You really should watch the video where he shows how it works in C#.
Linq to SQL is about accessing relational data with LINQ. (Language Integrated Query).
I find this really amazing stuff. It looks very easy to map data from a database to objects in your code.
The video gives a good intro on how this new stuff works. If you want to know more about LINQ, like me, you should check out Charlie Calvert's blogpost "Links to Linq" with a whole bunch of links and information.