> ## Documentation Index
> Fetch the complete documentation index at: https://openmetadata-docs-release-watchers.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Relation Types | OpenMetadata Ontology Guide

> Configure the relationship types available between glossary terms, including custom types with characteristics, cardinality, RDF predicate mapping, and color coding.

# Relation Types

Every edge in the [Ontology Studio](/v2.1.x-SNAPSHOT/how-to-guides/ontology/studio) graph — and every option in its **Relationship Type** filter — is backed by a relation type definition. OpenMetadata ships a set of system-defined types (**Related To**, **Part Of**, **Broader**, **Synonym**, and others) and lets admins add their own to model relationships specific to their domain.

Manage them at **Settings → Governance → Glossary Term Relations**. The page is admin-only.

<img src="https://mintcdn.com/openmetadata-docs-release-watchers/syFItHMlJvv5crVx/public/images/how-to-guides/ontology/relationship-types-settings.png?fit=max&auto=format&n=syFItHMlJvv5crVx&q=85&s=10fc0f72b1e072e2ed5cb70de291054a" alt="Glossary Term Relations settings page" width="1680" height="1000" data-path="public/images/how-to-guides/ontology/relationship-types-settings.png" />

The full reference — every field, the shipped types, and design guidance — is here:

<CardGroup cols={2}>
  <Card title="Relationship Types (full reference)" href="/v2.1.x-SNAPSHOT/how-to-guides/ontology/studio/relationship-types">
    Categories, OWL characteristics, cardinality, inverse relations, RDF predicates, property chains, and disjointness.
  </Card>

  <Card title="Core Concepts" href="/v2.1.x-SNAPSHOT/how-to-guides/ontology/concepts">
    How relationship types fit into the wider ontology model.
  </Card>
</CardGroup>