Library
7 data model standards serving library. Every one confirmed against its steward's own site.
| Standard | Steward | Layer | Access | Modernity |
|---|---|---|---|---|
| BIBFRAME | Library of Congress | Ontology / Vocabulary | open | 65.6 Modernizing |
| Dewey Decimal Classification (DDC) | OCLC | Code System | licence | 38.0 Legacy |
| GND (Integrated Authority File) | Deutsche Nationalbibliothek | Code System | open | — |
| Library of Congress Classification (LCC) | Library of Congress | Code System | open | 43.2 Legacy |
| MARC 21 | Library of Congress | Exchange Schema | open | 62.0 Modernizing |
| Universal Decimal Classification (UDC) | UDC Consortium | Code System | licence | — |
| VIAF (Virtual International Authority File) | OCLC | Code System | open | — |