See [[ https://www.wikidata.org/wiki/Wikidata:SPARQL_federation_input#Attribution_licences_(like_CC-BY) | Wikidata:SPARQL_federation_input ]]
```
> Complies with the SPARQL 1.1 protocol, "query operation" part, at least to the extent necessary to make federated SERVICE clause work (most SPARQL endpoints do).
> Contains data that can be linked to Wikidata - i.e., either contains Wikidata IDs or can be queried by values contained in one of the Wikidata properties.
> Has data freely available under license compatible with CC0 (preferred) or other free database license allowing unrestricted reuse. Attribution licenses like CC-BY are ok too. Currently, we do not accept endpoints with reuse restriction clauses like NC/ND.
```
See also:
* Webinarier
** [[https://entryscape.com/en/2014/03/webbinarium-med-henrik-summanen-om-riksantikvarieambetets-erfarenheter-kring-lankade-oppna-data/| Riksantikvarieämbetets erfarenheter kring länkade öppna data]]
** [[https://entryscape.com/en/2014/04/webbinarium-med-niklas-lindstrom-om-att-uppgradera-ett-nationalbibliotek-till-lankad-data/|Kungliga bibliotekets arbete med länkade data]]
** [[https://entryscape.com/en/2014/05/webbinarium-om-lankade-data-for-nobelpris/ |Länkade nobelpris]] – att producera och konsumera länkade öppna data
{F24332251,width=500 }
picture from {icon youtube-play spin} at [[ https://youtu.be/igIp0IjT4vo?t=30m00s | 30 minutes ]] the architecture
* Book [[http://patterns.dataincubator.org/book/|Linked Data patterns]]
* [[https://www.w3.org/DesignIssues/LinkedData.html| Linked Data Design issues]]