> These "private" keys should be used extremely sparingly in the production database. With fixme, one can also query the start letters of the value in the search, an extra notation would definitely not be necessary. I also do not consider pure capital letters to be useful, as there is too much danger that data will be overwritten in the event of unclean corrections. A postfix consisting of an import reference would probably be a better idea.

Fair point. In hindsight I definitely agree. Will look for a more suitable schema next time. Will probably also port the ones I haven't been able to address during the next week or so.

> Would this not have been a good idea to clarify before importing? 

Yes and no. Most of them were clarified before importing. The remaining ones are the more difficult ones that demand more effort. I deemed the imported data valuable enough that I didn't think it should be gated by a small number of naming questions. On the other hand, maybe I could have left out the names I was unsure about.