- From: Shuh Barbara <barbara.shuh@nlc-bnc.ca>
- Date: Mon, 22 Apr 2002 12:38:00 -0400
- To: "'Gladwell, Kevin'" <Kevin.Gladwell@bl.uk>, www-zig@w3.org
- Cc: "Oldroyd, Bill" <Bill.Oldroyd@bl.uk>, "Alexander, Michael" <Michael.Alexander@bl.uk>, "Masters, Richard" <Richard.Masters@bl.uk>, "Clayphan, Robina" <Robina.Clayphan@bl.uk>
Thanks, Kevin, for your 5 questions. I've responded to each point you made below. As has been suggested by Rob and I in the list discussion earlier today, I think that the response for most issues is that, where the data, as defined in the DC-Lib Profile, does not match the Bib-2 attributes, and is not covered in other Attribute Sets (such as the Utility Set and the MARC Set), that a separate set be developed for DC-Lib. If names of elements have to be changed to match the Z39.50 queries up with DC, then it has to be done in the Cross Domain Set first. And, Kevin, I would welcome some elucidation on the etc., etc., etc., if you have time - over time. i) DC-Lib uses DC CREATOR, CONTRIBUTOR and PUBLISHER however they also defined a qualifier called DCMI Agent Detail which can be family name, given names, name, affiliation location, description, date time and identifier. In Bib-2 there are 4 different structural qualifiers for NAME. How could Bib-2 be used to search for a family name in a document described by DC-Lib? BAS: I would expect that the search would have to be mapped to: (1) Access Point [Cross-Domain Set] = (3) Name (2) Semantic Qualifier [Bib-2] = (3) Personal If one really needs to get more specific, one would include attribute from the MARC Attribute Set limiting the search to those personal name attributes where Tags 100 and 700 1st indicator = 3 Family name. ii) DC-Lib for RESOURCE TYPE uses DCMI Type Vocabulary (http://dublincore.org/documents/2000/07/11/dcmi-type-vocabulary/) as qualifiers to Resource Type, these are not included in Bib-2. BAS: I see that DC-Lib specific vocabularies such as this would be part of an auxiliary DC-Lib attribute set. iii) DC-Lib and Bib-2 for SUBJECT both have the content authority (encoding schema in DC-Lib) of LCSH, LCC, MeSH and UDC. DC-Lib also has DDC and bib-2 has 18 additional content authorities. BAS: I don't see a problem here. Bib-2 has provided an enumeration of the codes that are explicitly used in MARC 21 (LCSH, LCC, MeSH, NAL, CSH and RVM), plus a list of different subject and classification systems that were covered in Bib-1, but not in the MARC lists. iv) DC-Lib uses coverage/temporal for duration and coverage/spatial for geographic referent. Coverage/spatial includes using the Thesaurus of Geographic Names. BAS: I believe that we had discussion on these attributes at the Boston Spa meeting, and at that time, Paul Miller indicated that the DC data element, Coverage, didn't apply to such things. But it looks like the story has changed since last October, because the DC documentation appears to have extended the meaning of that element to cover these elements. And the definition of the "Coverage" attribute in the Z39.50 Cross-Domain set gives no hint that such attributes as duration and geographic referrent should be covered there. Since Bib-2 is closely tied to the Cross-Domain Attribute Set, it is in the Cross-Domain Set that the change would first be made. BUT, From the definition given for Coverage/temporal, I'm not sure what it is. (Hint to Robina that the text of this DC-Lib definition is not very clear:-) Presumably, you think that it is meant to convey "Duration" - but I can't tell from the definition given in DC-Lib. RE: "Coverage/Spatial" Although the DC Encoding schemes include things like the MARC Geographic Area Codes and MARC Country Codes, the recommended best practice is to use a value from a controlled vocabulary, (such as the Thesaurus of Geographic Names) and not to use numeric identifiers such as sets of coordinates or date ranges. v) The DC-Lib DATE has some qualifiers that are not in Bib-2 e.g. date/modified how would this be searched for using Bib-2? BAS: This query uses elements defined in the Utility Set, so not required in Bib-2 I.e., (1) Access Point [Utility Set] = (1) Record Date/time (12) Functional Qualifier [Utility Set] = (3) Modification Barb ______________________ Barbara Shuh Library Network Specialist National Library of Canada Phone: (613) 995-1701 Fax: (613) 943-1939 E-mail: barbara.shuh@nlc-bnc.ca
Received on Monday, 22 April 2002 12:37:50 UTC