I’m working currently on migrating a lot of our non-MARC metadata collections from older platforms using a kind of simple Dublin Core to MODS/XML (version 3.5, we’re currently looking at 3.6) that will be ingested into Islandora. That ‘kind of simple Dublin Core’ should be taken as: there was varying levels of metadata oversight over the years, and folks creating the metadata had different interpretations of the Dublin Core schema – a well-documented and well-known issue/consideration for working with such a general/flexible schema.
http://christinaharlow.com/walkthrough-of-geonames-recon-service/
I am interested in learning more, but the link to the walkthrough is giving the 404 error
I just tested the link, and it seems to be working now!