Tracker – 3.0: Resource Description Framework (RDF)
Description: Reference for Tracker-3.0: Resource Description Framework (RDF)

#### Resource Description Framework (RDF)

Core RDF classes to keep the internal consistency of the ontology

    @prefix rdf: <http://www.w3.org/2000/01/rdf-schema#>

The following classes are defined:

List, Property, langString

# Classes

## List

The class of RDF Lists.

#### Class hierarchy

#### RDF Diagram

#### Properties

Name | Type | Notes | Description
--- | --- | --- | ---
first | Resource |  | The first item in the subject RDF list.
rest | List |  | The rest of the subject RDF list after the first item.

#### Predefined instances

rdf:List has the following predefined instances:

- rdf:nil

## Property

The class of RDF properties

#### Class hierarchy

#### RDF Diagram

#### Properties

Name | Type | Notes | Description
--- | --- | --- | ---
fulltextIndexed | boolean |  | Whether the property is full-text indexed. This is a Tracker extension
indexed | boolean |  | Whether a property has an index. This is a Tracker extension
maxCardinality | integer |  | Specifies a maximum value cardinality for a specific property
propertySpecification | string |  | Link to upstream specification for an ontology property. This is a Tracker extension
secondaryIndex | Property |  | Whether subject and object properties share an index. This is a Tracker extension
weight | integer |  | Property weight on full-text search relevance. This is a Tracker extension
domain | Resource |  | A domain of the subject property
range | Class |  | A range of the subject property
subPropertyOf | Property |  | The subject is a subproperty of a property

#### Specification

https://www.w3.org/TR/rdf-schema/#ch_property

## langString

The datatype of language-tagged string values

#### Class hierarchy

#### Specification

https://www.w3.org/TR/rdf-schema/#ch_langstring

# Additional properties for rdfs:Resource

Properties this ontology defines which can describe rdfs:Resource resources.

Name | Type | Notes | Description
--- | --- | --- | ---
type | Class |  | The subject is an instance of a class

# Credits and Copyright

Authors:

- W3C

Editors:

- Tracker developers (translation into turtle)

Upstream: Not available

ChangeLog: Tracker changes