void
The Vocabulary of Interlinked Datasets (VoID) is an RDF Schema vocabulary for expressing metadata about RDF datasets. It is intended as a bridge between the publishers and users of RDF data, with applications ranging from data discovery to cataloging and archiving of datasets. This document provides a formal definition of the new RDF classes and properties introduced for VoID. It is a companion to the main specification document for VoID, Describing Linked Datasets with the VoID Vocabulary (http://www.w3.org/TR/void/).
URI: https://w3id.org/lmodel/void
Name: void
Classes
| Class | Description |
|---|---|
| NamedThing | a databased entity or concept/class |
| Dataset | A set of RDF triples that are published, maintained or aggregated by a single provider. |
| Linkset | A collection of RDF links between two void:Datasets. |
| Document | Form for preservation of structured and identified information |
| DatasetDescription | A web resource whose foaf:primaryTopic or foaf:topics include void:Datasets. |
| Resource | source or supply from which benefit is produced |
| TechnicalFeature | A technical feature of a void:Dataset, such as a supported RDF serialization format. |
Slots
| Slot | Description |
|---|---|
| a_link_predicate | |
| class | The rdfs:Class that is the rdf:type of all entities in a class-based partitio... |
| class_partition | A subset of a void:Dataset that contains only the entities of a certain rdfs:... |
| classes | The total number of distinct classes in a void:Dataset |
| data_dump | An RDF dump, partial or complete, of a void:Dataset |
| distinct_objects | The total number of distinct objects in a void:Dataset |
| distinct_subjects | The total number of distinct subjects in a void:Dataset |
| example_resource_of_dataset | |
| feature | distinguishing feature |
| has_a_SPARQL_endpoint_at | |
| has_an_URI_look_up_endpoint_at | Defines a simple URI look-up protocol for accessing a dataset |
| has_subset | |
| in_dataset | Points to the void:Dataset that a document is a part of |
| number_of_documents | The total number of documents, for datasets that are published as a set of in... |
| number_of_entities | The total number of entities that are described in a void:Dataset |
| number_of_properties | The total number of distinct properties in a void:Dataset |
| number_of_triples | The total number of triples contained in a void:Dataset |
| objects_target | The dataset describing the objects of the triples contained in the linkset |
| open_search_description | An OpenSearch description document for a free-text search service over a void... |
| property | The rdf:Property that is the predicate of all triples in a property-based par... |
| property_partition | A subset of a void:Dataset that contains only the triples of a certain rdf:Pr... |
| root_resource | A top concept or entry point for a void:Dataset that is structured in a tree-... |
| subjects_target | The dataset describing the subjects of triples contained in the linkset |
| target | One of the two datasets linked by the linkset |
| URI_space | A URI that is a common string prefix of all the entity URIs in a void:Dataset |
| vocabulary | A vocabulary that is used in the dataset |
Enumerations
| Enumeration | Description |
|---|---|
Types
| Type | Description |
|---|---|
| Boolean | A binary (true or false) value |
| Curie | a compact URI |
| Date | a date (year, month and day) in an idealized calendar |
| DateOrDatetime | Either a date or a datetime |
| Datetime | The combination of a date and time |
| Decimal | A real number with arbitrary precision that conforms to the xsd:decimal speci... |
| Double | A real number that conforms to the xsd:double specification |
| Float | A real number that conforms to the xsd:float specification |
| Integer | An integer |
| LiteralType | Literals are used for values such as strings, numbers, and dates |
| Ncname | Prefix part of CURIE |
| Nodeidentifier | A URI, CURIE or BNODE that represents a node in a model |
| Objectidentifier | A URI or CURIE that represents an object in the model |
| String | A character string |
| Time | A time object represents a (local) time of day, independent of any particular... |
| Uri | a complete URI |
| Uriorcurie | a URI or a CURIE |
Subsets
| Subset | Description |
|---|---|
| DatatypeProperties | classes distinct objects distinct subjects number of documents number of enti... |
| FunctionalProperties | class Objects Target property Subjects Target |
| ObjectProperties |