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Requesting XML records via Z39.50

From: Ray Denenberg, Library of Congress <rden@loc.gov>
Date: Mon, 26 Jan 2009 10:55:04 -0500
Message-ID: <03e601c97fce$74535a60$18af938c@lib.loc.gov>
To: <www-zig@w3.org>

I would like to revisit the implementor agreement on "Requesting XML 
Records",  http://www.loc.gov/z3950/agency/agree/request-xml.html, as it has 
been many years since it we've discussed it, and it does seem to warrant 
some clarification.

Briefly,  to retrieve records according to a specific XML schema using 
Z39.50 (if you DON'T want to use compSpec):
1. XML is specified as the record syntax,  specifically 'xml-b': 
1.2.840.10003.5.112.
2. The schema identifier is specified as the element set name.

This has come up in discussion with a few implementers, some who want to 
retrieve holdings records (ISO 20775), others marcXchange records (ISO 
25577), as well as subschemas of these two schemas.

As a result of that discussion I have registered the following:

1.2.840.10003.13.11   ISO 20775 Schema for holdings 
http://www.loc.gov/standards/iso20775/

1.2.840.10003.13.11.1  the holdingsHistory subschema (element set) of ISO 
20775 Holdings Schema

1.2.840.10003.13.12 'MarcXchange'  ISO 25577 XML schema for MARC formatted 
records
http://www.loc.gov/standards/iso25577/

1.2.840.10003.13.12.1  danMARC2 subschema of MarcXchange

1.2.840.10003.13.12.2  MarcXML subschema of MarcXchange 
http://www.loc.gov/standards/marcxml/


Please comment, particularly implementors who retrieve XML records but don't 
do it this way.

 If there is no discsussion on this (say, by February 9), I will re-write 
the implementor agreement with appropriate clarification.

--Ray
Received on Monday, 26 January 2009 15:55:46 GMT

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