DCMIThe DCMI Government Application Profile (DC-Gov) is an application profile that defines and extends the use of Dublin Core metadata for government information resources. Developed collaboratively by the Managing Information for e-Government (MIReG) group and the DCMI Government Working Group, DC-Gov addresses the specialized metadata needs of public sector organizations, including data security classifications, access rights management, legislative process tracking, and records management.
Background
DC-Gov emerged from a series of seminars held in Brussels in 2001 under the title "Managing Information Resources for e-Government." Representatives from European governments and from Australia, Canada, and New Zealand recognized that they faced similar challenges in tagging and managing government information for improved accessibility.
MIReG became part of the revised European Commission IDA Programme (Interchange of Data between Administrations) for 2001, with a mandate to produce a European Commission metadata framework covering vocabulary control, encoding schemes, ontologies, topic maps, software interfaces, and best practice guidelines. The work was overseen by an Advisory Board consisting of John Borras (UK Office of the e-Envoy), Peter Pappamikail (European Parliament), Palle Aargaard (Danish State Information Service), Makx Dekkers (DCMI), Paul Murphy (European Commission), and Maewyn Cumming (UK Office of the e-Envoy), who served as creator of the specification.
Purpose & Scope
Dublin Core was already widely used by governments seeking to improve access to their information, but the core element set did not address several government-specific requirements. DC-Gov extends Dublin Core to accommodate:
- Data security and access markings: Classification of resources by security level, with tracking of previous markings and change dates.
- Legislative compliance: Support for data protection legislation, freedom of information requirements, and audit trails.
- Records management: Elements for tracking resource lifecycles including acquisition dates and aggregation levels.
- Complex relations: Additional relationship types such as IsBasedOn/IsBasisFor for tracking legislative derivations and translations.
Profile Structure
The DC-Gov profile draws from four namespaces:
- Dublin Core Metadata Element Set, Version 1.1 (DCMES)
- Dublin Core Qualifiers (DCMES Qualifiers 2000-07-11)
- DC-Gov Metadata Element Set (DC-GOVMES) — new elements
- DC-Gov Metadata Element Set Qualifiers — government-specific refinements
Each element in the profile is documented with its namespace, Dublin Core and DC-Gov refinements, encoding schemes, obligation level, definitions, comments, best practice recommendations, and open questions.
Key Extensions
DC-Gov introduces several notable extensions to Dublin Core:
- Audience: A category of user for whom the resource is intended
- Date | Acquired: Date on which a resource was received into an organization
- Relation | IsBasedOn / IsBasisFor: For tracking translations, derivations, and legislative relationships
- Rights | AccessMarking: Security or access classification of the resource
- Rights | PreviousAccessMarking: Tracking of marking changes over time
- Rights | AccessRights: Legal constraints governing release
- Rights | Copyright: Ownership and usage rights
- Subject | Category: Broad subject categorization for browsing systems
- Subject | Keyword: Specific subject descriptors from controlled vocabularies
- Type | AggregationLevel: Position in a collection hierarchy (Collection, Dossier, Item)
Obligation Levels
DC-Gov defines four levels of obligation for metadata elements:
| Level | Code | Meaning |
|---|---|---|
| Mandatory | M | Must always have a value |
| Mandatory if applicable | MA | Must have a value if the information is available |
| Strongly recommended | R | Should be filled if appropriate |
| Optional | O | May be left blank |
Governance & Maintenance
The specification was published through DCMI and was developed in coordination with the European Commission's IDA Programme and CEN (European Standards Organisation), particularly its MMI-DC (Metadata for Multimedia Information - Dublin Core) Workshop.
Notable Implementations
DC-Gov influenced government metadata practice across Europe and contributed to national implementations including the UK e-Government Metadata Standard (e-GMS). The profile demonstrated how Dublin Core could be systematically extended for sector-specific needs while maintaining compatibility with the base standard.
Related Standards
- Dublin Core Metadata Element Set — the base vocabulary profiled by DC-Gov
- DCMI Metadata Terms — the expanded Dublin Core vocabulary
- AGLS — the Australian Government Locator Service, a parallel government metadata effort
- e-GMS — the UK e-Government Metadata Standard, influenced by DC-Gov work