- Last 7 days
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www.navigae.fr www.navigae.fr
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opengeospatial.github.io opengeospatial.github.io
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www.geosparql.org www.geosparql.org
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pdfs.semanticscholar.org pdfs.semanticscholar.org
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data.world data.world
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les-ateliers-du-web-semantique.gitpages.huma-num.fr les-ateliers-du-web-semantique.gitpages.huma-num.fr
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www.slideshare.net www.slideshare.net
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data.culture.fr data.culture.fr
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skos.um.es skos.um.es
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fr.blog.openfoodfacts.org fr.blog.openfoodfacts.org
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sparql PREFIX food: <https://data.lirmm.fr/ontologies/food#> SELECT ?s ?code WHERE { ?s <https://www.w3.org/1999/02/22-rdf-syntax-ns#type> food:FoodProduct . ?s food:containsIngredient ?i . ?i food:food <https://fr.openfoodfacts.org/ingredient/sucre> . ?i food:rank "1" OPTIONAL { ?s food:code ?code } . }
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- May 2022
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eur-lex.europa.eu eur-lex.europa.eu
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foodkg.github.io foodkg.github.ioFoodKG1
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wiki.myexperiment.org wiki.myexperiment.org
- Apr 2022
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zazuko.com zazuko.com
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- Mar 2022
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www.wikidata.org www.wikidata.org
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wikidata-todo.toolforge.org wikidata-todo.toolforge.org
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- Feb 2022
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atomgraph.github.io atomgraph.github.io
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Local file Local file
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Zusätzlich bietet die Abfragesprache SPARQL die Möglichkeit,RDF-kodierte semantische Daten strukturiert abzufragen, wobei bereits (beschränkter)Gebrauch der Möglichkeit logischer Schlussfolgerungen gemacht werden kann.
SPARQL = Abfragesprache von RDF
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github.com github.com
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sql use "http://triplr.org/sparyql/sparql.xml" as sparql; select * from sparql where query="PREFIX foaf: <http://xmlns.com/foaf/0.1/> SELECT $nick $name FROM <http://www.dajobe.org/foaf.rdf> WHERE { $x a foaf:Person . $x foaf:nick $nick . $x foaf:name $name }" and service="http://sparql.org/sparql"
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www.w3.org www.w3.org
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crschmidt.net crschmidt.net
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```xml <iq to='crschmidt@crschmidt.net/sparql' type='get' id='2'> <query xmlns='http://www.w3.org/2005/09/xmpp-sparql-binding'> SELECT ?a WHERE { ?a &http://xmlns.com/foaf/0.1/nick> "crschmidt". } </query> </iq>
<iq to='crschmidt@crschmidt.net/sparql' type='result' id='2' from='crschmidt@crschmidt.net/sparql'> <query xmlns='http://www.w3.org/2005/09/xmpp-sparql-binding'> <meta /> <sparql xmlns='http://www.w3.org/2001/sw/DataAccess/rf1/result'> <head> <variable name='a'/> </head> <results> <result> </result> <result> </result> <result> </result> </results> </sparql> </query> </iq> ```
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- Jan 2022
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www.iro.umontreal.ca www.iro.umontreal.ca
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dbtune.org dbtune.org
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ods-qa.openlinksw.com ods-qa.openlinksw.comGrappa1
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Grappa : A GraphQL-SPARQL-Bridge test tool
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slideplayer.com slideplayer.com
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www.slideshare.net www.slideshare.net
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www.slideshare.net www.slideshare.net
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- Dec 2021
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comunica.dev comunica.dev
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Flexible SPARQL and GraphQL over decentralized RDF on the Web.
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- May 2021
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www.ulisp.com www.ulisp.com
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Note that variables cannot appear in the predicate position.
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- Jun 2020
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github.com github.com
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sansa-stack.net sansa-stack.net
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ceur-ws.org ceur-ws.org
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- Jan 2020
- Nov 2019
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medium.com medium.com
- Jun 2019
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Local file Local file
- Nov 2018
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www.wikidata.org www.wikidata.org
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Now you know how to search for all works of art, or all buildings, or all human settlements: the magic incantation wdt:P31/wdt:P279*, along with the appropriate class. This uses some more SPARQL features that I haven’t explained yet, but quite honestly, this is almost the only relevant use of those features, so you don’t need to understand how it works in order to use WDQS effectively. If you want to know, I’ll explain it in a bit, but you can also just skip the next section and memorize or copy+paste wdt:P31/wdt:P279* from here when you need it.
wdt:P31/wdt:P279*= magic incantation for Wikidata SPARQL to mean "instance of or subclass of"
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- Oct 2018
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www-sop.inria.fr www-sop.inria.fr
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www.snee.com www.snee.com
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github.com github.com
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github.com github.com
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www.mediawiki.org www.mediawiki.org
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data.bnf.fr data.bnf.fr
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