Jim,

In my repository that is under development I am using only one side
(isPartOf) in RELS-EXT. Reciprocal relationship (hasPart) is
calculated whenever necessary. This approach simplifies things for me.
I have seen similar approach in several other repositories.

Serhiy Polyakov
University of North Texas


On Mon, May 7, 2012 at 10:52 AM, Jim Coble <jim.co...@duke.edu> wrote:
> We are in the process of designing a Fedora repository for archival
> preservation of our digital content and have a question regarding best
> practices advice for the RELS-EXT datastream.  The Fedora RELS-EXT ontology
> (http://www.fedora.info/definitions/1/0/fedora-relsext-ontology.rdfs)
> includes RDF properties for both directions of a relationship (e.g.,
> “isPartOf” and “hasPart”).  Do most installations implement both directions
> of such a relationship – i.e., the “whole” object has a RELS-EXT datastream
> with a “hasPart” relationship to each of its “parts” _and_ each “part”
> object has a RELS-EXT datastream with a “isPartOf” relationship to the
> corresponding “whole”?  Or do you typically pick one side or the other to
> represent in RELS-EXT – either the “hasPart” relationship from whole to part
> _or_ the “isPartOf” relationship from part to whole _but not both_?
> Interested in best practices advice, a sense of what the common practice is,
> etc.
> Thanks!
> --Jim
>
> ================================================
> Jim Coble
> Core Services Technical Lead and Program Coordinator
> Information Technology Services
> Perkins Library
> Box 90196, Duke University
> Durham, NC 27708-0196
> Email: jim.co...@duke.edu
> Voice: 919-660-5974  Fax: 919-668-2578
> ================================================
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