Hi Andrew,
Like Richard we preferred to encode our parent-child relationships in
the parent object. This makes it much simpler to reorder or insert
elements later.
I looked into embedding an RDF:Seq in RELS-EXT, but this is not
possible. RELS-EXT RDF is restricted to be one level deep, with no
blank nodes, as I understand it. A Seq required creating a new node in
the RDF for the Seq resource. You might be able to achieve this today
with the RELS-INT datastream, but I'm not up to date on any restrictions
in that RDF.
The other trade off is simplicity. RDF collections are unwieldy in my
opinion. I do put a parent-child relationship in RELS-EXT, but I do not
record the sequence there. The sequence is in a separate METS structMap
datastream.
Greg
____
Gregory Jansen
University Libraries
University of North Carolina at Chapel Hill
On 05/19/2010 08:13 AM, HIGGINS R.I. wrote:
Out of interest, why not use METS to encode this relationship at a
book level?
As always with FEDORA there seem to be several ways to do things, so
it is always useful to know why one particular one has been chosen. I
find that a METS file for the book level digital object stores all the
metadata in one place which simplifies reuse by applications. Although
you can never eliminate getting data entry just plain wrong in any
format, I could see a situation with the RDF solution where one
mistake would mean you jumping into a different book altogether (as
opposed to the file not found errors I get when I get the METS file
wrong ...)
- - - - -
# Richard Higgins
# Durham University Library
# Archives & Special Collections
# Palace Green
# Durham
# DH1 3RN
# E-Mail: [email protected]
*From:* Andrew Curley [mailto:[email protected]]
*Sent:* 18 May 2010 22:17
*To:* [email protected]
*Subject:* [Fedora-commons-users] Object Order Using RDF
Does anyone have experience using RDF to describe sequential
relationships between objects? For example, given two objects
representing two page images, I wish to describe that one
object precedes the other and/or that one object follows the other.
There is nothing in the Fedora ontology that facilitates this
relationship so I was wondering if anyone in the community has
codified this relationship through RDF or knows of an RDF standard
which facilitates this description.
Thanks,
Andrew Curley
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