A National Memory Sector Entity Model? Anyone? Anyone?

So if linked data and general shareability relies on good metadata, and good metadata is created across many memory insitutions, what is the metadata model by which all this stuff, across all of these types of insitutions, is managed?

Libraries, archives and museums all have different frameworks within which their respective metadata standards are created and applied (to varying degrees of actual standardisation), but is there something that we could be doing as a memory sector that could help better expose our stuff across professional and insitutional boundaries – like some common entities with some common relationships?

So maybe we should discuss a national memory sector entity model as either a bunch of baloney or a potential way to better enable federated access and reuse?

Possible entities:

Creating Entities: Organisations, groups, families, people

Content Entities: Collections, Series (in the archival sense and are they they same as collections for this purpose?), items (which could include documents as lower level agregations of items with parts relationships), objects….

Relating to entities (but with a better title): Places, subjects, functions

Questions:

If there are some of these we can standardise across the sector, what would the benefits and challenges be?

And if it is possible, what are the two authorities to start with? People and places maybe?

And if we has such a model, how could it be flexible enough for archives, libraries, museums to implement their different description or cataloguing standards and still allow for better shariness. This is also, the how the heck would it work question.

What are the obvious relationships?

So it goes.