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: [email protected]
Voice: 919-660-5974  Fax: 919-668-2578
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