Language and RDF Types

RDF N-Quad allows specifying a language for string values and an RDF type. Languages are written using @lang. For example

<0x01> <name> "Adelaide"@en .
<0x01> <name> "Аделаида"@ru .
<0x01> <name> "Adélaïde"@fr .
<0x01> <dgraph.type> "Person" .

RDF types are attached to literals with the standard ^^ separator. For example

<0x01> <age> "32"^^<xs:int> .
<0x01> <birthdate> "1985-06-08"^^<xs:dateTime> .

The supported RDF datatypes and the corresponding internal type in which the data is stored are as follows.

Storage Type	Dgraph type
<xs:string>	`string`
<xs:dateTime>	`dateTime`
<xs:date>	`datetime`
<xs:int>	`int`
<xs:integer>	`int`
<xs:boolean>	`bool`
<xs:double>	`float`
<xs:float>	`float`
<geo:geojson>	`geo`
<xs:password>	`password`
<http://www.w3.org/2001/XMLSchema#string>	`string`
<http://www.w3.org/2001/XMLSchema#dateTime>	`dateTime`
<http://www.w3.org/2001/XMLSchema#date>	`dateTime`
<http://www.w3.org/2001/XMLSchema#int>	`int`
<http://www.w3.org/2001/XMLSchema#positiveInteger>	`int`
<http://www.w3.org/2001/XMLSchema#integer>	`int`
<http://www.w3.org/2001/XMLSchema#boolean>	`bool`
<http://www.w3.org/2001/XMLSchema#double>	`float`
<http://www.w3.org/2001/XMLSchema#float>	`float`

See the section on RDF schema types to understand how RDF types affect mutations and storage.