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Re: [dxwg] Clarify the scope of `dct:identifier` (#771)

From: Simon Cox via GitHub <sysbot+gh@w3.org>
Date: Sun, 03 Mar 2019 21:54:19 +0000
To: public-dxwg-wg@w3.org
Message-ID: <issue_comment.created-469068507-1551650058-sysbot+gh@w3.org>
GoIng back to my original comments, since there is confusion in a well-intentioned part of the user community, The new chapter on identifiers explores some of the by-ways of identifier forms, but does not really address the semantics of the identifier-resource relationship. So I believe some clarifications in the text are in order. 

As with all the DCT elements used in DCAT, merely re-iterating the external definition is not enough, because of either or both
(a) the original definition is misleading or lame in some way
(b) usage patterns in the context of DCAT merits some additional explanation. 

IMO 'both' is the case here - https://w3c.github.io/dxwg/dcat/#Property:resource_identifier

1. within the definition, 'unique' is misleading ( I think the intention is that it is an inverseFunctionalProperty?) and 'the item' begs the question 'which?' (I think we mean 'the resource being catalogued' or 'the resource (dataset or data-service) which this description refers to')

2. the usage note only refers (obliquely) to a rather trivial lexical pattern. I suggest that we also need a note something like 

> The value of the dct:identifier property is any identifier that denotes the catalogued resource, typically one assigned by the resource provider, publisher, a repository manager, or some other registration authority. It is not unusual for a catalogued resource to have multiple identifiers.

Finally, I just noticed that we do not mention `dct:identifier` as a property recommend for `dcat:DIstribution`, But I used it in several examples here: https://w3c.github.io/dxwg/dcat/#ex-elaborated-bag - was I wrong or does it need to be added to the list for `dcat:Distribution`?

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Received on Sunday, 3 March 2019 21:54:21 UTC

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