This page (revision-64) was last changed on 05-May-2021 20:05 by Albrecht Striffler

This page was created on 24-Jun-2014 12:41 by Joba Baumeister

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Version Date Modified Size Author Changes ... Change note
64 05-May-2021 20:05 7 KB Albrecht Striffler to previous
63 05-May-2021 20:04 7 KB Albrecht Striffler to previous | to last
62 09-Dec-2019 14:24 7 KB Albrecht Striffler to previous | to last
61 09-Dec-2019 14:23 7 KB Albrecht Striffler to previous | to last

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Demo - Simpsons

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At line 257 changed one line
!!! Sample Queries
%%SparqlVisualization
At line 259 changed one line
Ok, we can test/query the ontology by inserting some SPARQL statements.
SELECT ?x ?y ?z WHERE {
?x ?y ?z .
FILTER (STRSTARTS(STR(?x), "http://www.example.org/ontology#")).
FILTER (STRSTARTS(STR(?z), "http://www.example.org/ontology#")).
FILTER NOT EXISTS {?x rdf:type rdfs:Class}.
FILTER NOT EXISTS {?z rdf:type rdfs:Class}.
FILTER NOT EXISTS {?x rdf:type rdf:Property}.
FILTER NOT EXISTS {?z rdf:type rdf:Property}.
FILTER (?y != si:relatedWith).
FILTER (?y != si:parent).
FILTER (?y != si:child).
FILTER (?y != si:grandparent).
FILTER (?z != ?x).
At line 261 removed 10 lines
! Simple start
Show me all instances of Human and also show their labels.
%%Sparql
SELECT ?x ?name
WHERE {
?x rdf:type si:Animal ;
rdfs:label ?name .
At line 272 changed 3 lines
@border: true
@zebramode: true
@showQuery: true
@rankDir: BT
@size: 1200
At line 278 removed 79 lines
! Barts Grand-Pa
Use property paths in SPARQL.
%%Sparql
SELECT ?name
WHERE {
si:bart si:father/si:father ?name .
}
@border: true
@zebramode: true
@showQuery: true
%
Now using a defined PropertyChain
%%Sparql
SELECT ?name
WHERE {
si:bart si:grandparent ?name .
}
@border: true
@zebramode: true
@showQuery: true
%
! Optional belongings
We also can add optional patterns into the query. Show all humans and their (optional) belongings.
%%Sparql
SELECT ?name ?belonging
WHERE {
?x rdf:type si:Human ;
rdfs:label ?name .
OPTIONAL { ?x si:owns/si:ownType/rdfs:label ?belonging } .
}
@border: true
@zebramode: true
@showQuery: true
%
! UNION: All names of humans and animals
%%Sparql
SELECT ?name
WHERE {
{ ?x rdf:type si:Human ;
rdfs:label ?name .
} UNION {
?x rdf:type si:Animal ;
rdfs:label ?name .
}
}
@border: true
@zebramode: true
@showQuery: true
%
! Expected Compentency Questions: Intersecting Properties
The family father: A father that is also a husband
%%Sparql
SELECT ?name
WHERE {
?husband si:father ?kid ;
rdfs:label ?name .
?wife si:husband ?husband .
}
@border: true
@zebramode: true
@showQuery: true
%
This page (revision-64) was last changed on 05-May-2021 20:05 by Albrecht Striffler Top