ISO 2146 is an ISO standard defining an information model for "registry services for libraries and related organisations".
[1] Operating at a higher level than item-level standards such as MARC, it takes as principal elements parties (people or organisations), collections (of books, data, etc.
), services and activities (grants, projects, etc.)
[3] The third edition was initially driven by the need to support interlibrary loan services online, but it has been broadened in scope to encompass the rules for registries operating in a network environment to provide the information about collections, parties, activities and services needed by libraries and related organizations to manage their collections and deliver information and documentation services across a range of applications and domains.
The third edition reached publication stage in March 2010.