Well, I didn't really understand it either. Only know what I've seen in another forum (but don't remember where I've seen the discussion).

I'm learning MVC and all the samples use Entity Framework. Lightswitch uses it too, so I guess it's time for me to dig into EF.

>Really? Why in the world would one want to use only DataTables? There's really little overhead in having a DataSet, even if contains only one DataTable. And then you can easily add additional DataTables when/if you need them. Be consistent and always use a DataSet for transporting your data around between objects and layers, instead of sometimes using a DataSet and sometimes using a DataTable.
>
>Unless, of course, you meant individual methods that only work on one DataTable, then yes, passing only the DataTable into the method would be ok. Or with DataBinding.
>
>As far as Entity Framework, I still have not taken a taste of the Kool-Aid on that one, so I can't comment. <g>
>
>~~Bonnie