The '''[[CIDOC]] Conceptual Reference Model''' ('''CRM)''') provides an extensible [[Ontology (information science)|ontology]] for [[concept]]s and [[information]] in [[cultural heritage]] and [[museum]] [[Information science|documentation]]. It is the [[international standard]] ([[International Organization for Standardization|ISO]] 21127:2006) for the controlled exchange of cultural heritage information.<ref>[http://www.iso.org/iso/en/CatalogueDetailPage.CatalogueDetail?CSNUMBER=34424&scopelist=PROGRAMME ISO 21127:2006 (Information and documentation — A reference ontology for the interchange of cultural heritage information)]</ref> [[Archive]]s, [[library|libraries]], [[museum]]s, and other cultural institutions are encouraged to use the CIDOC CRM to enhance accessibility to museum-related information and [[knowledge]].
