Content standards for data are typically applied in the form of more specific metadata models tailored to particular documentation or application contexts, along with accompanying rule sets. These rule sets consist of metadata element sets (field catalogues). The meaning of the elements and their relationships (semantics) are defined. They are supplemented by instructions on which elements should be used for certain information and which kind of data types or values (vocabulary) should be applied.
Data models are often implemented as technical formats (metadata schemas) for the publication, exchange, and provision of data. These format definitions allow for the encoding or tagging of data for machine processing. They may be available in various serialisations, such as XML, JSON, or RDF.
For the cultural sciences and cultural heritage collections, we recommend using the following metadata element sets and schemas:
DCMI Metadata Terms (DC Terms)
Europeana Data Model (EDM), Definition of the Europeana Data Model v5.2.8, introduction: EDM Primer
International Image Interoperability Framework (IIIF) Presentation API
Machine-Readable Cataloging (MARC), currently as MARC21
Metadata Encoding and Transmission Standard (METS)
Metadata Object Description Schema (MODS)
Bibliographic Framework Initiative (BIBFRAME)
Encoded Archival Description (EAD)
Metadata Encoding and Transmission Standard/Metadata Object Description Schema (METS/MODS)
Lightweight Information Describing Objects (LIDO), introduction: LIDO Primer
Visual Resources Association Core (VRA Core)
Text Encoding Initiative (TEI)
printed texts: Metadata Encoding and Transmission Standard / Metadata Object Description Schema (METS/MODS)
manuscripts: TEI application profile for digitised manuscripts
Layout information: PAGE XML, Analyzed Layout and Text Object (ALTO)
Music Encoding Initiative (MEI)
Extensible Metadata Platform (XMP)
International Press Telecommunications Council Information Interchange Model (IPTC-IIM)
Texts: Text Encoding Initiative (TEI)
Music: Music Encoding Initiative (MEI), MusicXML
Articles in scientific journals: Journal Article Tag Suite (JATS)
Layout information: PAGE XML, Analyzed Layout and Text Object ALTO
Historic Building Information Modelling (HBIM)
INSPIRE Metadata Implementing Rules
DataCite Metadata Schema 4.6 and Datacite Best Practice Guide
Data Catalog Vocabulary (DCAT 3)
PREservation Metadata Implementation Strategies (PREMIS), introduction in German
Kompetenzzentrum Interoperable Metadaten (KIM) / Rühle, Stefanie: Kleines Handbuch Metadaten, 2012