[tdwg-content] Conflict between DarwinCore and DublinCore usageof dcterms:type / basisOfRecord

Steve Baskauf steve.baskauf at vanderbilt.edu
Sat Oct 24 21:02:22 CEST 2009

Comments inline.

John R. WIECZOREK wrote:
> One-liner summaries of actual changes to make:
> 1) Let dcterms:type comply 100% with Dublin Core
> 2) Create dwc:recordClass to do what was attempted incorrectly with
> dcterms:type.
OK, I think this is fine if basisOfRecord is not supposed to be a 
subclass of dcterms:type.  Then is basisOrRecord considered to be a 
subclass of the new dwc:recordClass that replaces the former DwC use of 
dcterms:type as would be inferred from the "definition" line of 
http://rs.tdwg.org/dwc/terms/index.htm#basisOfRecord ?
> Use cases from Steve:
> UC-Steve1
> * In the example of a live plant image from
> http://www.cas.vanderbilt.edu/bioimages/species/frame/oslo.htm I would
> assign image record
> DwC:recordClass = Occurrence
> DwC:basisOfRecord = StillImage
> dcterms:type = StillImage
> mrtg:subtype = Photograph
> [Note that DwC:basisOfRecord is not synonymous with mrtg:subtype as it
> currently stands.  Would it have to be under John's proposal?]
> For UC-Steve1, looking at the URL, I see nothing that suggests that
> the resource at
> http://www.cas.vanderbilt.edu/bioimages/species/frame/oslo.htm refers
> to an Occurrence record, but I suppose it is no different from having
> a specimen with no location information. Nevertheless, if the resource
> was being described with DwC terms, I would assign:
> dcterms:type = "StillImage"
> dwc:basisOfRecord = "Photograph" or "DigitalStillImage" or
> "DigitalPhotograph" or whatever vocabulary you decide.
> dwc:recordClass = "Occurrence"
These images are geolocated - I just haven't finished writing the 
software to display the location information yet.  My intention 
eventually is to make available all metadata that would be available for 
a specimen AND for an image resource type, hence my interest in both DwC 
and MRTG.
> The image would be a different resource that could be referred to by
> the Occurrence record via dwc:associatedMedia or through an instance
> of the dwc:ResourceRelationship class. The image resource could be
> described by the terms:
> dcterms:type = "StillImage"
> dwc:basisOfRecord = "Photograph" or "DigitalStillImage" or
> "DigitalPhotograph" or whatever vocabulary you decide.
> dwc:recordClass = "Occurrence"
> I hope that helps.
Yes, that helps a lot.  I agree that they should separate records.  I 
have a comment/question related to the issue of relationships between 
resources of these types, but since it's also related to another comment 
as well, I'll attach it to that message. 


Steven J. Baskauf, Ph.D., Senior Lecturer
Vanderbilt University Dept. of Biological Sciences

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