On Fri, May 8, 2009 at 3:08 PM, Jonathan Rochkind <rochk...@jhu.edu> 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 I wonder how xID handles superceded OCLCnums, if it'll still succesfully 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" <emor...@nd.edu> >> >> >>> 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 >> >> >> >