What is the best local-database solution for WPF applications?

Question

What is currently the best solution for WPF applications which are meant to be used on one computer where various users log into them and use t

Answer 1

MDF does seem to be the most flexible solution but user need to have SQL server express installed to use it.

How do you plan on executing CRUD processes? If you are wanting to use Linq to SQL you are kinda limited offically it only supports SQL 2005, Sql 2008 and Sql Compact.

Also, does the application need to be disconnect, partially, fully connected to the internet? That may put some weight on your decision.

IMO, I would start with SQL Server Compact edition and if that was too limiting move to sql server express. (.MDF)