RDF Data Types - NASA-PDS/product_relationships GitHub Wiki

Simple Types from XML Schema

Numbers

Data:

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

<urn:nasa:pds:context:target:dwarf_planet.136199_eris>
  <pds:name> "Eris";
  rdf:type <pds:DwarfPlanet>;
  <pds:semi_major_axis_au> "67.6681"^^xsd:float;
  <pds:year_discovered> "2003"^^xsd:integer.

Query:

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

SELECT *
WHERE {
  ?id rdf:type <pds:DwarfPlanet>.
  ?id <pds:year_discovered> ?year
  FILTER ( ?year > 2000)
}

Date Only

Data:

PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX pds: <pds:>

<urn:nasa:pds:context:investigation:mission.2001_mars_odyssey>
  rdf:type <pds:Mission>
  pds:start_date "2001-01-04"^^xsd:date;
  pds:stop_date "3000-01-01"^^xsd:date.

Query:

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

SELECT *
WHERE {
  ?id rdf:type <pds:Mission>.
  ?id <pds:start_date> ?start_date
  FILTER ( ?start_date > "2000-01-01"^^xsd:date)
}

Date & Time

Data:

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX pds: <pds:>

<urn:nasa:pds:context:investigation:mission.2001_mars_odyssey>
  rdf:type <pds:Mission>;
  pds:start_date "2001-01-04T00:00:00Z"^^xsd:dateTime;
  pds:stop_date "3000-01-01T00:00:00Z"^^xsd:dateTime.

Query:

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

SELECT *
WHERE {
  ?id rdf:type <pds:Mission>.
  ?id <pds:start_date> ?start_date
  FILTER ( ?start_date > "2000-01-01T00:00:00Z"^^xsd:dateTime)
}
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