> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getcollate.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Ontology | Collate Data Governance

> Turn your glossary into a governed semantic model with Ontology Studio, and project it, with the rest of your catalog, into a queryable knowledge graph.

# Ontology

A glossary gives your organization agreed names and definitions. An **ontology** goes further: it records how those concepts relate, what is part of what, what is calculated from what, what is regulated by what, in a form software can act on.

In Collate the ontology is built directly on the glossary you already have. Glossary terms become **concepts**, term relations become **typed relationships** backed by OWL/SKOS predicates, and the whole model can be authored, queried, imported, and exported from **Ontology Studio**.

Open it from **Governance** > **Ontology Studio**.

<img src="https://mintcdn.com/collatedocs/AKoFfO3bAGZHXbkp/public/images/ai-2.0/how-to-guides/ontology/ontology-studio-view-graph.png?fit=max&auto=format&n=AKoFfO3bAGZHXbkp&q=85&s=cecfec4cbc089f3dcff76f3e50d4ebd3" alt="Ontology Studio showing a business ontology as a graph" width="1680" height="1000" data-path="public/images/ai-2.0/how-to-guides/ontology/ontology-studio-view-graph.png" />

## Where the Documentation Lives

The full guide is in its own section:

<CardGroup cols={2}>
  <Card title="Ontology & Knowledge Graph: Overview" href="/ai-2-0/how-to-guides/ontology">
    What an ontology is, why it matters in the AI era, and how Collate implements it.
  </Card>

  <Card title="Core Concepts" href="/ai-2-0/how-to-guides/ontology/concepts">
    Concepts, relationship types, attributes, axioms, IRIs, and ontology layers.
  </Card>

  <Card title="Ontology Studio" href="/ai-2-0/how-to-guides/ontology/studio">
    Explore, author, query, and AI-assist your model.
  </Card>

  <Card title="Knowledge Graph" href="/ai-2-0/how-to-guides/ontology/knowledge-graph">
    The whole catalog as one RDF graph you can query with SPARQL.
  </Card>

  <Card title="Relationship Types" href="/ai-2-0/how-to-guides/ontology/studio/relationship-types">
    Govern the vocabulary of edges between concepts.
  </Card>

  <Card title="For AI Agents" href="/ai-2-0/how-to-guides/ontology/ai-agents">
    MCP tools that let an assistant traverse the graph.
  </Card>
</CardGroup>

## Related

<CardGroup cols={2}>
  <Card title="Glossary" href="/ai-2-0/how-to-guides/data-governance/glossary">
    Create and organize the terms your ontology is built from.
  </Card>

  <Card title="RDF Knowledge Graph Indexing" href="/ai-2-0/admin-guide/applications/rdf-indexing-overview">
    The application that populates the graph.
  </Card>
</CardGroup>