Standard Inter-object Relationships

Standard relationships between archival objects. This is part of the NGDA archive data model.

tag:ngda.org,2005:relationships/member-of

Indicates that the target object is a collection of which the source object is a member. The directed graph induced by this relationship must be acyclic.

tag:ngda.org,2005:relationships/has-member

The inverse of the preceding relationship: indicates that the target object is a member of the source object, which represents a collection. The directed graph induced by this relationship must be acyclic. Collection membership must be represented by member-of relationships; has-member relationships are optional.