Open jakubklimek opened 3 months ago
Posponed until the next webinar
Related issue / information: #115
As an applicable example, in Flanders we refer to the standard accompanied by a unique identifier. An example conformsTo
element that refers to a standard is given below:
<dct:conformsTo>
<dct:Standard rdf:about="https://www.opengis.net/def/crs/EjjPSG/0/5710">
<dct:title>Ostend height</dct:title>
<dct:identifier>https://www.opengis.net/def/crs/EPSG/0/5710</dct:identifier>
<dct:type rdf:resource="http://inspire.ec.europa.eu/glossary/SpatialReferenceSystem"/>
</dct:Standard>
</dct:conformsTo>
A subproperty will be created.
Problem statement In GeoDCAT-AP 2.0.0, the Reference system property on
is mapped to the generic
dct:conformsTo
, which is also present on the same classes, both havingdct:Standard
as range.This makes correct assignment of usage notes, labels and the required code lists rather difficult, as well as consequent validation e.g. via SHACL. The current approach is not in line with the profiling guidelines established in the context of the SEMIC Style Guide property reuse guideline Reuse of a property with terminological adaptations and Reuse of a property with semantic adaptations. Also, the approach becomes even more problematic in a cross-profile environment where incompatible requirements can be easily made.
The reference system usage note says e.g.
This property SHOULD be used to specify the reference system used in the Catalogue. Spatial reference systems SHOULD be specified by using the corresponding URIs from the “EPSG coordinate reference systems” register operated by OGC [OGC-EPSG].
The
dct:conformsTo
usage note says e.g.This property refers to an implementing rule or other specification.
Proposal Either
dct:conformsTo
to make it clear that reference systems are one kind of the Standards expected as values here, ordct:conformsTo
geodcatap:referenceSystem
and attach the separate usage notes there.