On Fri, May 8, 2009 at 3:08 PM, Jonathan Rochkind <[log in to unmask]> wrote:

> I wonder how xID handles superceded OCLCnums, if it'll still succesfully
> find the right matches for you?
>

This is documented in
http://xisbn.worldcat.org/xisbnadmin/xoclcnum/api.htm#deleted


"Worldcat uses OCLC Control Number Cross-Reference to track deleted OCLC
numbers. When an OCLC number is deleted, it's still search-able from this
service. In the response, we use presentOclcnum to specify present OCLC
number. For example 2416076 was merged into 24991049, a request of the
deleted number 2416076 will return:

      <rsp xmlns="http://worldcat.org/xid/xoclcnum/" stat="ok">
      <oclcnum lccn="34025476" presentOclcnum="24991049">2416076</oclcnum>
      </rsp>


The presentOclcnum field is omitted when an OCLC number is active, so
request to current OCLC number 24991049 returns:

      <rsp xmlns="http://worldcat.org/xid/xoclcnum/" stat="ok">
      <oclcnum lccn="34025476" >24991049</oclcnum>
      </rsp>


Xiaoming



>
>
> Ray Denenberg, Library of Congress wrote:
>
>> From: "Eric Lease Morgan" <[log in to unmask]>
>>
>>
>>>  1. What MARC field/subfield might I put this string?
>>>  2. How would I go about getting the string indexed?
>>>  3. How might I go about querying the server for records with this
>>> string?
>>>
>>>
>>
>> I can at least talk about the third question.  There was work on a marc
>> attribute set, though not completed.  If you look at the oid register at
>> http://www.loc.gov/z3950/agency/defns/oids.html you'll see that the
>> latest work on it (second draft) was in 2000,
>> http://www.nlc-bnc.ca/iso/z3950/MARC_attribute_set_2.doc. So if someone
>> actually wanted to put it to use it would have to be completed.
>>
>> For SRU there is a complete marc context set,
>> http://www.loc.gov/standards/sru/resources/marc-context-set.html.
>>
>> --Ray
>>
>>
>>
>