Downloadable titles in most cases are region-wide. So they are added as North American, European, etc etc not country specific.
In North America, all downloadable titles are region wide and I imagine Europe is the same way. Even with certain countries in Europe that censor and ban certain games, we'll still use region-wide anyway as one country isn't enough to warrant selecting 20 specific countries instead.
Short answer is Europe region-wide for European downloadable titles, and no they don't need Part/UPCs either.