Which database would you recommend to use with C# (.NET) application?

Question

I\'m developing a little project plan and I came to a point when I need to decide what local databse system to use.

The input data is going to be stored on webserver

Answer 1

How about using db4o? It's an OODB you can embed in your application. Also supports replication. Edit: As a side note - In my current pet project using db4o I have a line (C# 3.5):

IList<Users> list = Persistence.Database.Query<Users>(u => u.Name == "Admin");

Using strong typed lambda expression to get a (lazy) list of objects from the database. It also uses indexes to retrieve the list quickly.