One of the great advantages offered by Entity Framework compared to Linq to SQL is the fact that it is designed to support any database not just MS SQL. All you need to have in order to connect to third party databases is the right ADO.NET provider.
Unfortunately till recently there were no implementations of such providers. Devart (formerly Core Lab) though, has released a new version of their ADO.NET providers, which includes support for the Entity Framework.
So with DevArt’s new ADO.NET providers you’ll be able to connect to Oracle, MySQL, and Postgress using Entity Framework.