Re: [dxwg] Add property to link from Distribution -> Dataset (inverse of dcat:distribution)

> I was thinking in particular of https://www.w3.org/TR/dcat-ucr/#ID6 - the use of dcat:Distribution to describe data services. In this case the service is an independent thing with (usually) a need to link back to the descriptions of the datasets that it presents. Also Modeling service-based data access https://www.w3.org/TR/dcat-ucr/#ID18

Thanks for the clarification, @dr-shorthair . However, I'm not sure that the service _is_ the distribution. Rather, the service is _linked from_ the distribution by using `dcat:accessURL` - which could be expressed as "the distribution of this dataset is available from [a service by using] this URL". If this is the case, `dcat:dataset` (or its inverse) is not modelling this relationship.

Actually, the relationship between a service and the data accessible from it looks similar to the role of the ISO 19139 element `srv:operatesOn` (and to [the INSPIRE notion of "coupled resource"](http://data.europa.eu/eli/reg/2008/1205/oj#d1e201-14-1)). Notably, in ISO 19139 and INSPIRE, the reference points from the service (metadata) to the dataset and not to its distribution. 

How to model this relationship was one of issues discussed in the development of GeoDCAT-AP. The adopted solution was following from the decision of considering `dcat:Catalog` as a type of service (corresponding to a geospatial catalogue service, as a CSW). `dcat:dataset` was then the proposed property for linking any type of data service with a dataset. However, as the domain of `dcat:dataset` is restricted to `dcat:Catalog`, the decision was to use instead `dct:hasPart` (as `dcat:dataset` is a sub-property of it).

This could be actually a use case in favour of relaxing the domain restriction of `dcat:dataset` (I'll post a comment in the relevant issue - #117).

-- 
GitHub Notification of comment by andrea-perego
Please view or discuss this issue at https://github.com/w3c/dxwg/issues/166#issuecomment-373558491 using your GitHub account

Received on Thursday, 15 March 2018 23:49:16 UTC