What is the different between Org-Data and Org-Ent-Data classes? Do we have different layers as Org Layer and enterprise layer or are they same? If we have both classes what are the data classes can we put in each layer?
Interesting structure. To me, the correct structure for the Organisation/Enterprise would be "Org-Data" as your Enterprise is your Organisation unless I am sorely mistaken.
I wouldn't normally expect to see the second described structure; In that position, I would normally place the words "Data", "Div", "FW", or your application name. I.e:
There are other uses, also. For example the Customer Service Framework may say "Org-Interface".