I'm not an expert on METS - but I wondered if this article from D-Lib might be relevant to your question?
The article describes how, in Australia, we came up with a three level structure for the "Australian METS Profile". At the top level, a generic profile specifies the mandatory elements and attributes, extension schemas and controlled vocabularies applicable to all content models. At the second level, sub-profiles inherit the generic profile and clarify requirements for specific content models. (The first of these sub-profiles - the Australian Journals METS Profile - has now been registered). At the third level is the local registration of implementation profiles as part of a national registry of repositories.
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From: Metadata Encoding and Transmission Standard [mailto:[log in to unmask]] On Behalf Of Riley, Jenn
Sent: Saturday, 4 April 2009 6:44 AM
To: [log in to unmask]
Subject: [METS] mptr to higher-level object
I'm finally sitting down to spec out how to do something in METS we've long known we needed and I always assumed would be easy, but now that I actually tried to do it, I have run into a big brick wall. Maybe it's just Friday afternoon cognitive slowness, but for the life of me I'm stumped.
We're working on METS specs for multi-volume titles. Journals, newsletters, monographic series, etc. We want a two-level structure where a "big" METS gives the structure of the title down to some reasonable level, then includes <mptr>s to "small" METS (say, a journal issue) that could itself have some internal structure. This is working just fine, but we also want the "small" METS to link back to the "big" METS. That's what I can't figure out how to do. It doesn't seem to make sense to put an <mptr> in the structMap for this, because the METS being linked to isn't part of "this" object, but rather one hierarchically above it. I don't have any other ideas, though.
I see Patrick Yott/Brown posted <http://listserv.loc.gov/cgi-bin/wa?A2=ind0705&L=METS&D=0&I=-3&P=1321> some samples of their METS for cases like this to the METS list in May 2007, but I can't seem to get the full attachments out of the listserv archive so I can't see if there's something for me to rip off there. I also see other messages about folks linking in this direction with MODS <relatedItem>, but we're really looking for something in METS proper. Is anyone doing this?
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