I am developing like this: Using files DataProvider.vb and SqlDataProvider.vb

using these files and architecture from the module plugin provided by dotnetnuke in Visual Studio dotnet 2010. But this seems to me like overworking. Why is there 2 files for this and I have to write the methods in both htese files to make things work. Do you guys still develop like this?

 I feel you can do the same work without these double files DataProvider.vb and SqlDataProvider.vb I would like to use only one of them. Any of you doing so and why or why not?

code for creating provider on the fly inside the DataProvider.vb

Private Shared Sub CreateProvider()
            objProvider = CType(Framework.Reflection.CreateObject("data", "Companyname.Modules.Modulname", ""), DataProvider)
        End Sub 

Ok, thanks then I throw that model away then