I was digging through some older e-mail when I found this.  I don't
think anybody responded:

> we created a Fedora object via Fedora-Admin tool with a RELS-EXT data
> stream which has a control group “Managed Content”. 

<snip>and everything worked fine, but the documentation says
otherwise:</snip>

> “The RELS-EXT Datastream should be encoded as an Inline XML
> Datastream, meaning that the relationships metadata is expressed
> directly as XML within the digital object XML file (as opposed the
> relationship metadata existing in a separate XML file that the digital
> object points to by reference).”

I don't know of any specialized code in Fedora itself that assumes
RELS-EXT is an inline datastream, so I am not surprised that everything
works.  However, there's has been precedent for some external utilities
(such as migration tools) to assume that RELS-EXT is inline.  The 2.2 ->
3.0 migration tool was one.  It simply applied an XSL transform to every
foxml file, and assumed that RELS-EXT was either inline, or did not
exist in the object.  A managed RELS-EXT datastream would likely have
caused a problem to the utility or to the resulting data.

I believe that the specific control group for RELS-EXT (or any
datastream) should ideally be irrelevant as far as the repository and
utilities are concerned.  Unfortunately, I don't know what other tools
or services do/will operate under the inline XML assumption, so I would
proceed with caution.  

  -Aaron



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