[ckan-dev] Essence of DCAT and Linked data in CKAN

[Steven De Costa]

Here is the presentation from the Madrid CKANCon which Stefan is referring
to :)

https://www.slideshare.net/mobile/u10313335/open-data-web-a-linked-open-data-repository-built-with-ckan


On Fri, Mar 15, 2019 at 8:24 AM, Stefan Oderbolz <odi at metaodi.ch> wrote:

> Hi,
>
> Your questions are very broad, I try to answer them to the best of my
> knowledge.
>
>
> 1. What is the essence of DCAT in CKAN?
>>
>
> CKAN does not support DCAT out of the box, but there is the ckanext-dcat
> extension (https://github.com/ckan/ckanext-dcat) to add DCAT
> functionality.
>
>
>  2. How to see the information about DCAT in my CKAN instance?
>>
>
> Assuming you're using ckanext-dcat, it provides several DCAT-specific API
> endpoints to expose CKAN datasets or even the whole catalogue as RDF. Plese
> see the README for details:
> https://github.com/ckan/ckanext-dcat/blob/master/README.md#rdf-dcat-endpoints
>
>
> 3. How can linked data help in CKAN repository.
>>
>
> This depends on your use case. It might be useful to expose your metadata
> as RDF for harvesting purposes.
> But if you define "linked data" as exposing metadata + actual data, you
> need a triple store, which CKAN currently does not provide. I'm not aware
> of an extension that does that, but I remember a talk at CKANCon some
> years ago about that topic. Maybe someone else has more details.
>
> Another take on this is exposing your data as "structured data" (JSON-LD)
> so your favourite search engine has more information about your datasets. I
> wrote a blogpost about this a while ago (
> https://www.liip.ch/en/blog/make-open-data-discoverable-for-search-engines)
> and you can find it in the README of ckanext-dcat as well (
> https://github.com/ckan/ckanext-dcat/blob/master/README.md#structured-data-and-google-dataset-search-indexing
> )
>
>
> 4. What are the different functionalities in which linked data can make
>> impacts?
>>
>
> Again this is not related to CKAN, but generally Linked Data helps to
> connect your data to others. With SPARQL you have a powerful query language
> and with federated queries you can get answers based on several data
> sources (e.g. Wikidata, a statistic office and yourhown data).
>
>
> Hope this helps.
>
> - Stefan
>
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-- 
P.S. I'd love to see your support of open data in Ethiopia (and the CKAN
project) via a small donation here:
https://www.gofundme.com/ethiopia-needs-open-data-experts

*STEVEN DE COSTA *|
*EXECUTIVE DIRECTOR*www.linkdigital.com.au
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