[OAI-implementers] Two questions: Rights and Identifiers

Naomi Dushay Naomi at cs.cornell.edu
Tue Feb 28 14:00:54 EST 2006


I don't know about the rights element, but here's an answer to your
identifier question:

The OAI identifier (nested in the OAI header element) should be a unique
identifier for the OAI item, that is, for the metadata.
In oai_dc, the dc:identifier field is meant to be an identifier for the
*resource*.  So it would be incorrect to put your oai identifier value in the
dc:identifier field.

Excerpt from the NSDL metadata primer

"The identifier element in the DC portion of a record should be used only for
identifiers linked to the resource, not for the identifier of the metadata
record itself. Metadata record identifiers should be in the OAI portion of a
record." (http://metamanagement.comm.nsdlib.org/contributing.html)

Some drafts of best practices documentation can be found at

You might want to read especially:


> -----Original Message-----
> From: oai-implementers-bounces at openarchives.org 
> [mailto:oai-implementers-bounces at openarchives.org] On Behalf 
> Of David Heath
> Sent: Tuesday, February 28, 2006 1:33 PM
> To: OAI-Implementers
> Subject: [OAI-implementers] Two questions: Rights and Identifiers
> Hi,
> I wonder if you can help with some clarifications on these two issues.
> Rights:
>    am I correct in reading the specs that the <rights> record in the 
> <about> section of an OAI-PMH GetRecord response describes 
> the copyright 
> license of the *metadata record* and not the *resource* ?
>    A close reading of the detailed example at:
> http://www.openarchives.org/OAI/2.0/guidelines-rights.htm#A1
> suggests that this is so, but I just wanted to check I'd understood 
> correctly.
> Identifiers:
>   Is there any requirement or expectation that the 
> <identifier> given in 
> the <header> is the same as a dc:identifier value? In other words, is 
> the following legitimate:
> <header>
>    <identifier>oai:an.oa.org:zxy123</identifier>
>    <datestamp>2004-08-08</datestamp>
> </header>
> <metadata>
>    <oai_dc:dc
>     xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
>     xmlns:dc="http://purl.org/dc/elements/1.1/"
>     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>     xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
>     http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
>     <!-- Is this OK? --> 
> <dc:identifier>http://www.an.oa.org/elephant_HOWTO.html</dc:id
>      <dc:title>Using elephants to crack peanuts in a factory 
> </dc:title>
>      <dc:creator>Nutcase, A</dc:creator>
>      <dc:subject>Elephants</dc:subject>
>      <dc:description>With the increasing technical 
> sophistication of well-trained elephants it is becoming 
> practical to consider their use in factory settings.</dc:description>
>      <dc:date>2004-04-01</dc:date>
>    </oai_dc:dc>
> </metadata>
> Thanks
> David
> -- 
> David Heath
> Freelance Software Developer
> david at davidheath.org
> http://davidheath.org/
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