[datacatalogs] Status of data catalog metadata standards

James McKinney james at opennorth.ca
Fri Jan 24 22:33:15 UTC 2014

http://schema.org/Dataset derives from DCAT. DCAT is a W3C Recommendation, which is as stable and finalized as anything goes in W3C.  There are no other more stable or finalized standards. I spent a lot of time on the project-open-data issue tracker getting its schema to match the DCAT spec. In terms of adoption, you'll find an incomplete list here http://www.w3.org/2011/gld/wiki/DCAT_Implementations

To my knowledge, dataprotocols.org is not about data catalog metadata. It addresses other problems like CSV on the web, etc.

Besides DCAT, I don't know of another *standard* specifically focused on data catalogs. Thematic areas, e.g. health data, may have their own specific standards. Of course, each data catalog vendor has its own custom formats, toolchains, etc.

In my opinion, all efforts should be on DCAT.


On 2014-01-24, at 4:57 PM, Philip Ashlock wrote:

> Can I get some help piecing together an overview of the current state of data catalog metadata standards? 
> I'm interested in getting a rough sense of how stable or finalized certain schemas are and how much they've have been adopted by data producers, data consumers, and the toolchains associated with them. 
> In particular:
> * DCAT and derivatives/serializations
> * Schema.org Datasets schema 
> * Anything on http://dataprotocols.org
> The main reason I ask is because of the future of the US Federal Government's metadata schema and the implication of others serving metadata based on it (such as US local governments) 
> For that schema, see:
> http://project-open-data.github.io/schema/
> http://project-open-data.github.io/metadata-resources/
> This schema was driven by the US federal government, but was informed by some existing standards including DCAT and is meant to have mappings to them (as seen in the aforementioned link). There are variety of disparate systems in the federal government that now publish metadata using this schema. There's a CKAN extension to both produce and consume this schema and there's also some support from other full featured data catalog systems (namely DKAN and Socrata as far as I know).
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