Wow! I didn’t know about those ids, thank you. However it would be some work to match the stations.
What call the db_id is called IBNR as Internationaler Bahnhofs Nummer
DB has the data in systems (for instance, ETN), it's just, well, not open...
I am waiting until we translate the blogpost and our page in English before talking about that on the list. Pieter Colpaert alreday complained about uri/linked data ;)