Sigfrid Lundberg wrote:
>
>In my view such as search engine should have a standardized mapping
>between the fields, that is the Dublin Core Elements and their
>qualifiers, and the search attribute. The Z39.50 protocol supports all
>the elements, and a better part of the qualifiers. It _also_ provide
>a mapping for most, if not all, of the elements in the socalled BIB-1
>attribute set which is used for searching. ...
I agree that integration of Dublin Core into Z39.50 is critical. As the DC
syntax begins to settle down and become standardized (It is becoming
standardized, isn't it? Please? ) it will be necessary to define a standard
mapping between ALL elements.qualifiers and Bib-1 attributes. It would be
nice to have some basic tools for indexing HTML files with DC metadata, much
like the existing tools for indexing GILS or MARC metadata.
>Now, a lot of metadata is made available through Z39.50 servers, and
>therefore I thing it would be logical to look there for that finite
>list. If we do so, then we will be ensured that there is at least one
>protocol that can support searching in a database of dublin core records.
Exactly. Not to mention the ease of creating virtual union catalogs from
multiple Z39.50 databases. The value of standardized metadata like DC is
multiplied when the metadata is accessible through a standardized (Z39.50)
search engine.
>Z39.50 does actually provide two such lists of basic elements and
>qualifiers. It may or may not warm your heart that our 15 elements are
>proposed for inclusion in one of these lists just before the DC4
>meeting. The two lists are called tagsetg and tagsetm, and I have
>included them in the way I have them installed on my "personal"
>experimental Z39.50 installation (a zebra server from Indexdata in
>Denmark).
The freeware Zebra Z39.50 server is a really nice tool! (Available at
http://www.indexdata.dk/) I'm not convinced that DC elements need to be
added to a tagset though. Wouldn't a filter file (DC.flt ?) be sufficient
to establish a DC to Bib-1 mapping? I'm still learning to use Zebra, so I
may be completely mistaken here.
Kevin C. Marsh, Executive Director
Information Access Institute
[log in to unmask] http://Information.org
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