Overview - ISO 15836-1:2017 (Dublin Core core elements, metadata)
ISO 15836-1:2017 defines the 15 Dublin Core metadata core elements used for cross‑domain resource description. The standard specifies element labels and globally unique element URIs (based on DCMI namespaces) but does not prescribe implementation details or constrain what may be a resource. The core element set is part of the larger Dublin Core vocabularies maintained by the Dublin Core Metadata Initiative (DCMI) and is typically applied via an application profile that tailors element use to local or community requirements.
Key topics and technical requirements
- Defines 15 core metadata elements: Title, Creator, Subject, Description, Publisher, Contributor, Date, Type, Format, Identifier, Source, Language, Relation, Coverage, Rights.
- Each element has a label (human‑readable) and a URI (machine‑identifiable), enabling interoperability.
- Namespace and URI use follow DCMI namespace policies and RFC 3986 (URI syntax).
- Date values: expressed at variable granularity; best practice is to use ISO 8601 (dates/times).
- Language: best practice to use ISO language codes (ISO 639‑2 / ISO 639‑3).
- Controlled vocabularies recommended for elements such as Subject, Type, Format, and Coverage (e.g., DCMI Type Vocabulary, MIME media types, Getty TGN).
- Standard does not provide implementation guidelines - implementers should create or adopt application profiles (per DCMI Abstract Model) to constrain element use, vocabularies, and value formats.
Practical applications and users
Who uses ISO 15836-1:
- Libraries, archives, museums (LAMs) for cataloguing and discovery
- Institutional and research repositories for consistent metadata records
- Digital preservation and content management teams for basic descriptive metadata
- Web developers and SEO specialists who implement structured metadata for resource discovery
- Metadata specialists designing application profiles and crosswalks for interoperability
Practical value:
- Provides a small, stable set of interoperable metadata terms ideal for cross‑domain discovery and aggregation.
- Enables simple, consistent descriptions that improve search, sharing, and integration across systems and communities.
- Works as a foundation for richer metadata solutions when combined with ISO 15836‑2 (DCMI properties/classes) and domain‑specific vocabularies.
Related standards and resources
- ISO 15836‑2 (DCMI Properties and classes)
- DCMI Abstract Model (DCAM), DCMI Metadata Terms (DCMI‑TERMS), DCMI Encoding Guidelines
- RFC 3986 (URI syntax), ISO 8601 (date/time), ISO 639‑2/3 (language codes)
- MIME media types, Getty Thesaurus of Geographic Names (TGN), ISO 8459 (identifiers)
Keywords: Dublin Core, ISO 15836-1:2017, metadata element set, core elements, DCMI, application profile, metadata interoperability, URIs, ISO 8601.
