Karen,
If each aggregate Manifestation is linked to an aggregate Expression, and each aggregate Expression to an aggregate Work.... well, then we have a one-to-one between Manifestations, Expressions and Works. We're back to ISBD or MARC in that case.
I'm not sure whether that description fits my model, where there is no expression level for the aggregating work.
By the way, especially as a non-native speaker, I find it really dificult to distinguish between "aggregate" and "aggregating" as the Working Group does; they use the first one only on manifestation level). Probably I should use the term "aggregate work" instead of "aggregating work" for the alternative model, because I've got something different in mind as they have. My idea probably is much closer to the view of e.g. a collection as a "work-of-works" (I think they also called it "mosaic work"), which the Working Group seems to have rejected.
Then, if our assumption is that users are interested in the individual Works as well as, or instead of, the aggregate, then another entry has to be made for each individual Work as well. I don't think that's how most of us envision FRBR.
My view may be influenced by the German data model. For example, for a monographic series which is deemed important enough (the rule is, basically, to do it for numbered series) the series itself gets a bibliographic record, and the individual parts are linked to this via its control number. In this system it's quite natural that one can either start on the series level (where you get all the information about the series itself, and of course, a link to the individual parts) or with one of the individual works (with a link to the series). It is possible to use the same technique for e.g. essays in a collection, but of course this is a matter of time and effort. So mostly, in the case of articels we make use of a scan of the TOC instead. But in a really FRBRized environment I would expect records (or information packages built on-the-fly or whatever we will have then) for individual works and aggregate works, connected in a meaningful way.
Heidrun -- --------------------- Prof. Heidrun Wiesenmueller M.A. Stuttgart Media University Faculty of Information and Communication Wolframstrasse 32, 70191 Stuttgart, Germany www.hdm-stuttgart.de/bi
