137 lines
2.8 KiB
Markdown
137 lines
2.8 KiB
Markdown
# DBPedia
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## GraphIRI
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This is the graph identifier (URI):
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`http://dbpedia.org`
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## History of queries
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```SQL
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PREFIX dbo: <http://dbpedia.org/ontology/>
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PREFIX dbp: <http://dbpedia.org/property/>
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PREFIX dbr: <http://dbpedia.org/resource/>
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SELECT ?subject, ?relationship, ?object
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WHERE {
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?subject ?relationship ?object .
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{
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SELECT ?object
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WHERE {
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?m rdf:type dbo:Film .
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?object ?r ?m
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}
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}
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}
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```
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### 2 Hops
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```SQL
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PREFIX dbo: <http://dbpedia.org/ontology/>
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PREFIX dbp: <http://dbpedia.org/property/>
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PREFIX dbr: <http://dbpedia.org/resource/>
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SELECT ?subject, ?relationship, ?object
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WHERE {
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?subject ?relationship ?object .
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FILTER (?relationship != <http://dbpedia.org/ontology/wikiPageWikiLink>)
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{
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SELECT ?object
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WHERE {
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?m rdf:type dbo:Film .
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?object ?r ?m
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FILTER (?r != <http://dbpedia.org/ontology/wikiPageWikiLink>)
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}
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}
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}
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LIMIT 1000000
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```
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### 1 Hop
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```SQL
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PREFIX dbo: <http://dbpedia.org/ontology/>
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PREFIX dbp: <http://dbpedia.org/property/>
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PREFIX dbr: <http://dbpedia.org/resource/>
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SELECT ?subject, ?relationship, ?object
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WHERE {
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?subject ?relationship ?object .
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?object rdf:type dbo:Film .
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FILTER (?relationship != <http://dbpedia.org/ontology/wikiPageWikiLink>)
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}
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LIMIT 1000000
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```
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```SQL
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PREFIX dbo: <http://dbpedia.org/ontology/>
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PREFIX dbp: <http://dbpedia.org/property/>
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PREFIX dbr: <http://dbpedia.org/resource/>
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SELECT ?subject, ?relationship, ?object
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WHERE {
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?subject ?relationship ?object .
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?subject rdf:type dbo:Film .
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}
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```
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```SQL
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PREFIX dbo: <http://dbpedia.org/ontology/>
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PREFIX dbp: <http://dbpedia.org/property/>
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PREFIX dbr: <http://dbpedia.org/resource/>
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PREFIX foaf: <http://xmlns.com/foaf/0.1/>
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SELECT ?subject, ?relationship, ?object
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WHERE {
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?subject ?relationship ?object .
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?subject rdf:type dbo:Film .
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?a foaf:primaryTopic ?subject
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}
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```
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```SQL
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PREFIX dbo: <http://dbpedia.org/ontology/>
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PREFIX dbp: <http://dbpedia.org/property/>
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PREFIX dbr: <http://dbpedia.org/resource/>
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SELECT ?subject
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WHERE {
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?subject rdf:type dbo:Film .
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}
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```
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```SQL
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PREFIX dbo: <http://dbpedia.org/ontology/>
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PREFIX dbp: <http://dbpedia.org/property/>
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PREFIX dbr: <http://dbpedia.org/resource/>
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PREFIX foaf: <http://xmlns.com/foaf/0.1/>
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SELECT ?subject
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WHERE {
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?subject rdf:type dbo:Film .
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?a foaf:primaryTopic ?subject
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}
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```
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```SQL
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PREFIX dbo: <http://dbpedia.org/ontology/>
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PREFIX dbp: <http://dbpedia.org/property/>
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PREFIX dbr: <http://dbpedia.org/resource/>
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PREFIX foaf: <http://xmlns.com/foaf/0.1/>
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SELECT ?subject, ?relationship, ?object
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WHERE {
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?subject ?relationship ?object .
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?subject rdf:type dbo:Film .
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?a foaf:primaryTopic ?subject
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FILTER (?relationship NOT IN (
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dbo:wikiPageRedirects,
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dbo:wikiPageExternalLink,
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dbo:wikiPageWikiLink,
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foaf:primaryTopic
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))
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}
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```
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