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> What the RDA folks (that is, the folks > who have created RDA, the JSC members) said (some of them off-list to > me), is that if your manifestation is an aggregate, then your > Expression must be an equal aggregate. So the Expression is pretty > much one-to-one with the Manifestation. (And I think we were all > seeing a many-to-many.) I see this conclusion as RDA's, but not FRBR's. The FRBR report explicitly says there can be a many-to-one relationship between Expressions and a Manifestation (that is, a Manifestation can embody several Expressions), and the V/FRBR project takes that at face value and does not impose the additional restriction that a Manifestation contains an equal aggregate. RDA may impose that restriction, but that's their implementation of FRBR, and the V/FRBR project as *not* an RDA implementation doesn't feel bound by that decision. Obviously I think that RDA has made a mistake in adding in a requirement that "if your manifestation is an aggregate, then your Expression must be an equal aggregate." But that's their business, I guess. Jenn ======================== Jenn Riley Metadata Librarian Digital Library Program Indiana University - Bloomington Wells Library W501 (812) 856-5759 www.dlib.indiana.edu Inquiring Librarian blog: www.inquiringlibrarian.blogspot.com