---
title: "`domain_udt_usage`"
id: infoschema-domain-udt-usage
pg_version: "20devel"
---

<a id="infoschema-domain-udt-usage"></a>

## 35.22. `domain_udt_usage`

The view `domain_udt_usage` identifies all domains that are based on data types owned by a currently enabled role. Note that in PostgreSQL, built-in data types behave like user-defined types, so they are included here as well. 

**domain_udt_usage Columns**

| Column Type | Description | 
| --- | --- |
| `udt_catalog` `sql_identifier` | Name of the database that the domain data type is defined in (always the current database) |
| `udt_schema` `sql_identifier` | Name of the schema that the domain data type is defined in |
| `udt_name` `sql_identifier` | Name of the domain data type |
| `domain_catalog` `sql_identifier` | Name of the database that contains the domain (always the current database) |
| `domain_schema` `sql_identifier` | Name of the schema that contains the domain |
| `domain_name` `sql_identifier` | Name of the domain |