dct:format must use EU file type vocabulary

[sabinem]

Property: dcat:format Class: dcat:Distribution Conformance Problem: DCAT-AP makes the use of the EU file type vocabulary mandatory for this property Details: EU-filetype vocabulary url: http://publications.europa.eu/resource/authority/file-type. It is encouraged to contribute additional file types. A discussion has been started on the file types we currently use on opendata.swiss with OP-EU-VOCABULARIES@publications.europa.eu. There is a plan to enhance their file type vocabulary and to discuss further with the stakeholders about their needs regarding file types Proposal: Adapt definition and stay in discussion with OP-EU-VOCABULARIES@publications.europa.eu.

[metaodi]

If we provide our own license vocabulary (which points to the international URIs for licenses), is there a reason why we should not do this for dct:format?

I fully support to use an existing vocabulary, but I don't understand why in some cases we create our own vocabulary and in some we want to use an existing vocabulary.

[Juan-Juan-1]

If we provide our own license vocabulary (which points to the international URIs for licenses), is there a reason why we should not do this for dct:format?

I fully support to use an existing vocabulary, but I don't understand why in some cases we create our own vocabulary and in some we want to use an existing vocabulary.

Thank you four your good input Odi, we'll look into that.

[AFoletti]

Forgot to mention that in today's meeting, so I add it here directly. Disclaimer: this is of course my personal interpretation of the whole.

"Format" and "mediatype" for distributions are fundamentally different since the former lets the end-user pick the final format of the data. I.e. lets the user pick between a geopackage and a shapefile. The latter on the contrary informs about the type of file you are getting by downloading the distribution. That may very well not be the same as format... for instance when you download a .ZIP In short: "format" is human-centered. "mediaType" is machine-centered

Examples:

• I have a geopackage distribution (format "geopackage" or whatever) and a geodatabase one (format "geodatabase"). I tell the format to the user so he can choose to go the open or the ESRI way. Both are however zipped, and what you download by clicking on the download URL is a .zip file. So, both distributions have "mediatype"=="zip"
• a Shapefile is a format, but is always distributed as a .zip for obvious reasons (mediatype==zip)
• interlis is a format, which can be expressed via the "application/xml" IANA mediaType (please note that I am not opposed at all to add a new INTERLIS-dedicated mediaType)
• WMS is a format, but can it really be expressed as a mediatype?

The difference may seem trivial, but is important for automatic processes

Open for discussion! 😄

[Juan-Juan-1]

Vorschlag:

• Adopt EU-Vocabulary in DCAT-AP-CH v2
• If a format is not available in th vocabulary: a) use media type (IANA Media Types) b) discuss, encourage adoption within EU (OP-EU-VOCABULARIES@publications.europa.eu).