Schema for an ISO2146 collections and services registry Collection object. Wrapper element for descriptive and administrative metadata for a collection registry object. Primary and alternative identifiers for a collection. The value of the <key> element may be repeated, or any additional (local or global) identifiers described. Each identifier must be represented in its own identifier element. The name of the party in either a simple or compound form. Location(s) relevant to the collection. A location element should contain information about a single location (e.g. collection web site). Element for holding information about a related registry object. A subject category into which the collection falls or the collection is related. Multiple subjects must be represented via separate subject elements. A textual description or URI resolving to a description relevant to the collection. A URI pointing to information related to the collection.