Re: [dxwg] Data catalogues should not treated services as first class citizens

Including here an extract of other comment received from Luca Trani (message available [here](https://lists.w3.org/Archives/Public/public-dxwg-comments/2018Oct/0003.html)) with reference to data services and more clarifications needed:

"In particular, the introduction of additional resources (beyond Dataset) as first-class citizens in a Catalogue was definitely required and we accommodated that by extending DCAT 2014. My view is that in the context of RIs catalogues have an essential role to represent a variety of assets -- having the focus only on Dataset would be too restrictive. Therefore, I am pleased to see that there is a dcat:Resource in this new version. Also, two specialisations of a dcat:Resource are provided: Dataset and DataService. I assume that more might be added to extend the scope of a Catalogue when needed. Am I correct? Do you support composition of resources? Would that be covered by dct:relation?
Also, I would be interested in the approach you are considering to tackle Issue 66 and Issue 71.

Another important feature for us is the support for Data Services. I like your solution and I would like to understand a bit more about how to deal with a service that is providing multiple datasets e.g. by different methods/operations. I agree that the description of a service, via dcat:endpointDescription, should be as much as possible relying on dedicated description standards (e.g. WADL, OpenAPI/Swagger, OpenSearch). However, in some cases where such descriptions are not available a templating approach might be useful. In our case, while promoting the first approach, we also provided an alternative by embedding the W3C Hydra Vocabulary. For instance, Templated Links can be used. Hydra offers quite extensive descriptions although its status (Unofficial Draft) makes its adoption and future support unclear."



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Received on Monday, 5 November 2018 11:27:02 UTC