"In the tutorial, there is a default provider column for each input flow."
This is also true for you, the column is there, but in the EF database, you typically have fully aggregated system processes which do not have (and need) connections to other processes, because they do not have waste outputs or product inputs. Since only those are shown in the model graph process box, you see only one flow, e.g. a product on the output side, in these cases.
Hope this helps!