---
type: "datatype"
title: "uuid"
datatype: "uuid"
---
# uuid

- [Datatypes](/datatypes)
- [Definitions](/datatypes-definitions#uuid)
- [Examples](/datatypes-examples#uuid)
- [Mappings](/datatypes-mappings#uuid)
- [Profiles](/datatypes-profiles#uuid)

## Primitive Details
- **Definition**: A UUID, represented as a URI
- **Comments**: See The Open Group, CDE 1.1 Remote Procedure Call specification, Appendix A.
- **XML Schema/Base**: `xs:anyURI+`
- **JSON Type**: `string`
- **Regex**: `urn:uuid:[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}`