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ZNG  May 2009

ZNG May 2009

Subject:

Re: One Data Format Identifier (and Registry) to Rule Them All

From:

Mike Taylor <[log in to unmask]>

Reply-To:

SRU (Search and Retrieve Via URL) Implementors

Date:

Wed, 20 May 2009 14:06:37 +0100

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (48 lines)

Ray Denenberg writes:
 > (Hopefully this formats better.)
 >  
 >  Ross Singer initiated  this discussion, first on code4lib, and subseqently  (at my suggestion) here and on OpenURL.
 >  
 > Unfortunately it caught on only on  code4lib, and the thread there quickly   degenerated into incoherence.  I request that we discuss the issue here,  and/or OpenURL  (and not on the code4lib list)  and preferably on one list   only, and my preference would be here.
 >  
 >  The issue, synthesizing Ross's message:
 >  
 >  SRU has an XML  schema registry at 
 >  http://www.loc.gov/standards/sru/resources/schemas.html
 >  
 >  OpenURL  has a registry of metadata formats:
 >  http://alcme.oclc.org/openurl/servlet/OAIHandler?verb=ListRecords&metadataPrefix=oai_dc&set=Core:Metadata+Formats
 > 
 > it includes (but is not limited to) XML schemas.
 > 
 > OpenURL and SRU are using different info URIs  to describe the same things.
 > 
 > For example:
 > 
 > info:srw/schema/1/marcxml-v1.1  and   info:ofi/fmt:xml:xsd:MARC21
 > 
 > orinfo:srw/schema/1/onix-v2.0   info:ofi/fmt:xml:xsd:onix
 > 
 > Is it possible/feasible to agree on  one or the other, or will (must) we continue to use the SRU-registry identifiers for SRU and the OpenURL registry  identifiers for OpenURL?
 > 
 > >From my point of view we would need to come to agreement (if any) on this fast (at least agreement in principle), because of a number of initiatives currently in progress, and if we can't then we would just keep using thedual systems. 
 > 
 > Comments please.
 > 
 > (I really do strongly request that we resist the temptation to take this thread off-course, like making absurd suggestions that the identifer for a schema should be its namespace URI.  If you want to talk about that, please initiate a new thread.)

I propose the simplest possible solution (and also the only one that
we, the ZING community, can implement unilaterally: let's throw away
the SRU-specific schema identifiers and use the OpenURL ones in SRU.
If we do that, then hopefully our example will encourage others (OAI?)
to follow suit.

(Needless to say, well-behaved SRU servers would still continue to
recognise the old schema identifier URIs, as not all clients will
change over immediately.)

 _/|_	 ___________________________________________________________________
/o ) \/  Mike Taylor    <[log in to unmask]>    http://www.miketaylor.org.uk
)_v__/\  "You cannot really appreciate Dilbert unless you've read it in
	 the original Klingon." -- Klingon Programming Mantra

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