Why 0..n for dct:identifier in Dataset (while it is 1 for all other dct:identifier)?

[jimjyang]

Any reason why the cardinality for dct:identifier in the class Dataset (dcat:Dataset) is 0..* [while the cardinality for dct:identifier in all the other classes is 1 (if I have read correctly)]?

[NathanGhesq]

dct:identifier has a minimum cardinality of 0 because it is reused from DCAT-AP. This explains why the identifier of dcat:Dataset has a different cardinality than other identifiers in CPSV-AP.

[williamverbeeck]

During the webinar on the review of CPSV-AP on the 7th of November, it was agreed to investigate if the explicit inclusion of dcat:Dataset in the model is necessary and whether it is used or not.