Import an OWL/SKOS Ontology

Import an existing Web Ontology Language (OWL) or Simple Knowledge Organization System (SKOS) ontology into a Collate glossary. Collate converts the ontology’s concepts, classes, and relationships into glossary terms and typed relations.

Before You Begin

Create the target glossary before importing the ontology.
Confirm that you have Edit All permission for the glossary.
Ask an administrator to run the import if the ontology introduces relation types or custom properties that don’t already exist in Collate.

Supported Formats

Collate supports the following Resource Description Framework (RDF) serializations:

Syntax	File Extensions
Turtle	`.ttl`, `.owl`
RDF/XML	`.rdf`, `.xml`, `.owl`
N-Triples	`.nt`

Collate detects whether an .owl file uses Turtle or RDF/XML syntax from the file contents.

Importing an Ontology

In the left navigation menu, select Govern > Glossary.
Open the glossary that will contain the imported ontology.
Click the ⋮ icon and select Import Ontology.
Upload the ontology file. Collate validates the file without changing the glossary and displays a summary of the terms, relations, mappings, and properties it found.
Review the validation summary and resolve any reported issues.
Click Import.

What Gets Imported

Ontology Construct	Becomes
`skos:Concept` or `owl:Class`	A glossary term
`skos:broader` or `rdfs:subClassOf`	The term’s parent in the glossary hierarchy
`skos:closeMatch`, `skos:exactMatch`, and other `skos:*Match` properties	A concept mapping on the term
`owl:ObjectProperty` edges	A typed related term

If RDF indexing is enabled, Collate automatically mirrors imported glossary terms into the RDF triplestore. For more information, see RDF Knowledge Graph Indexing.

Using the API

To automate an import, send the ontology file’s contents to the following endpoint:

PUT /api/v1/glossaries/name/{glossaryName}/importRdf

Query Parameter	Values	Default
`format`	`turtle`, `rdfxml`, `ntriples`	`turtle`
`dryRun`	`true`, `false`	`true`

Set the Content-Type header to text/turtle, application/rdf+xml, or application/n-triples to match the file’s syntax. Run the request with dryRun=true first, review the response, and then set dryRun=false to persist the import.

curl -X PUT "$COLLATE_HOST/api/v1/glossaries/name/product-taxonomy/importRdf?format=turtle&dryRun=false" \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: text/turtle" \
  --data-binary @taxonomy.ttl

The response reports the terms created or updated, relations and mappings added, relation types registered, custom properties created, and any warnings generated during the import.

Ontology Explorer

Visualize the imported terms and their relationships as a graph.

Overview

Data Governance

Import an OWL/SKOS Ontology | Collate Knowledge Graph Guide

Import an OWL/SKOS Ontology

Before You Begin

Supported Formats

Importing an Ontology

What Gets Imported

Using the API

Ontology Explorer

​Import an OWL/SKOS Ontology

​Before You Begin

​Supported Formats

​Importing an Ontology

​What Gets Imported

​Using the API

Ontology Explorer

Import an OWL/SKOS Ontology

Before You Begin

Supported Formats

Importing an Ontology

What Gets Imported

Using the API