This vocabulary allows prefix declarations to be represented for arbitrary resources. ## Explanation of this vocabulary This vocabulary innovates over current vocabularies, which only allow one single prefix declaration to be defined ([VANN](https://triplydb.com/none/vann)), and/or only allow prefix declarations to be asserted for ontologies ([SHACL](https://triplydb.com/w3c/sh), [VANN](https://triplydb.com/none/vann)). At the same time, this vocabulary does reuse those aspects of [SHACL](https://triplydb.com/w3c/sh) and [VANN](https://triplydb.com/none/vann) that are generic enough to be reused here. From [SHACL](https://triplydb.com/w3c/sh) the following class and properties are reused: - [`sh:PrefixDeclaration`](https://triplydb.com/w3c/sh/table?subject=http%3A%2F%2Fwww.w3.org%2Fns%2Fshacl%23PrefixDeclaration) - [`sh:namespace`](https://triplydb.com/w3c/sh/table?subject=http%3A%2F%2Fwww.w3.org%2Fns%2Fshacl%23namespace) - [`sh:prefix`](https://triplydb.com/w3c/sh/table?subject=http%3A%2F%2Fwww.w3.org%2Fns%2Fshacl%23prefix) From [VANN](https://triplydb.com/none/vann) the following properties are reused: - [`vann:preferredNamespacePrefix`](https://triplydb.com/none/vann/table?subject=http%3A%2F%2Fpurl.org%2Fvocab%2Fvann%2FpreferredNamespacePrefix) - [`vann:preferredNamespaceUri`](https://triplydb.com/none/vann/table?subject=http%3A%2F%2Fpurl.org%2Fvocab%2Fvann%2FpreferredNamespaceUri) The following property is newly introduced by this vocabulary: - [`tp:prefixDeclaration`](https://triplydb.com/Triply/tp/def/prefixDeclaration) The following diagram shows how these classes and properties interact: ```mermaid classDiagram class rdfs_Resource { } class owl_Ontology { vann_preferredNamespacePrefix: xsd_string vann_preferredNamespaceUri: xsd_anyURI } rdfs_Resource <|-- owl_Ontology owl_Ontology --> sh_PrefixDeclaration: sh_declare class sh_PrefixDeclaration { sh_namespace: xsd_string sh_prefix: xsd_anyURI } rdfs_Resource --> sh_PrefixDeclaration: tp_prefixDeclaration ``` ## Use cases for this vocabulary Examples of resource types for which prefix declarations are commonly asserted include:

Datasets: Prefix declarations to abbreviate IRIs that appear in the dataset.
Queries: Prefix declarations used in (collections of) SPARQL queries.
Rules: Prefix declarations that are used in (collections of) SHACL rules.
Services: Prefix declarations that can be used to query service endpoints.

## Relation to [`sh:declare`](https://triplydb.com/w3c/sh/table?subject=http%3A%2F%2Fwww.w3.org%2Fns%2Fshacl%23declare) At Triply we our policy is to not publish direct assertions about nodes published by other organizations, but the intention of the property introduced by this vocabulary is to act as a superproperty of [`sh:declare`](https://triplydb.com/w3c/sh/table?subject=http%3A%2F%2Fwww.w3.org%2Fns%2Fshacl%23declare): ```turtle prefix rdfs: prefix sh: prefix tp: sh:declare rdfs:subPropertyOf tp:prefixDeclaration. ```

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