> I'm still confused about all this stuff too, but I've often see the
> oai_dc format (for OAI/PMH I think?) used as a 'standard' way to expose
> simple DC attributes.

Yep, it's the same approach as was taken with the QDC format CONTENTdm uses that I mentioned - a third party defining its own wrapper since the DCMI didn't do it themselves. oai_dc showed up earlier than any of the QDC formats (I think) and its use in OAI-PMH pretty much cemented it. I've never seen simple DC in XML use a different wrapper than the one oai_dc provides. Not the case for QDC, though, unfortunately.

> One thing I was confused about was whether the oai_dc format _required_
> the use of the "old style" DC uri's, or also allowed the use of the
> DCterms URIs?   Anyone know?  I kind of think it actually requires the
> old-style DC uri's, as it was written before "dcterms".

That's my understanding as well. oai_dc predates the defining of the 15 legacy DC properties in the dcterms namespace, and it's my guess nobody saw a reason to update the oai_dc definition after this happened.

Jenn