Metadata Encoding and Transmission Standard (METS) Official Web Site

External schemas for use with METS version 1

External schemas are schemas that define an XML vocabulary and syntax appropriate for use in conjunction with METS in its descriptive and administrative metadata contexts. For a fuller explanation of external schemas and external schema endorsement, see the Schema Endorsement: how and why page.

Endorsed External Schemas

The following schemas have been endorsed by the METS Editorial Board for use with METS version 1:

Endorsed External Schemas
Name	Description
DC	Dublin Core Metadata Initiative
DDI	Data Documentation Initiative
EAC-CPF	Encoded Archival Context - Corporate Bodies, Persons, and Families
EAD	Encoded Archival Description finding aid
FGDC	Federal Geographic Data Committee metadata
ISO 19115:2003 NAP	North American Profile of ISO 19115:2003 descriptive metadata
LC-AV	Technical metadata specified in the Library of Congress A/V prototyping project
LIDO	Lightweight Information Describing Objects
LOM	Learning Object Model
MARC	Any form of MARC record, including binary formats and MARC XML
METSRIGHTS	Rights Declaration Schema
MODS	Metadata in the Library of Congress Metadata Object Description Schema (MODS) format
NISOIMG	NISO Technical Metadata for Digital Still Images (MIX)
PREMIS	PREservation Metadata: Implementation Strategies
PREMIS:OBJECT	PREMIS Object entity
PREMIS:AGENT	PREMIS Agent entity
PREMIS:RIGHTS	PREMIS Rights entity
PREMIS:EVENT	PREMIS Event entity
TEIHDR	Text Encoding Initiative Header
TEXTMD	textMD Technical metadata for text
VRA	Visual Resources Association Core

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July 8, 2025

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