The Classes element set consists of classes representing the RDA entities, including Work, Expression, Manifestation, Item, Person, Family, Corporate Body, and Agent. @en
The Expression properties element set consists of properties representing the attributes and relationships of the RDA Expression entity. Each property in the element set has a domain of the class representing this entity. @en
The Unconstrained properties element set consists of properties representing the attributes and relationships of the all RDA entities. Each property in the element set has semantics which are independent of the FRBR model and has no specified domain or range. @en
The Agent properties element set consists of properties representing the attributes and relationships of the RDA Agent, Person, Family, and Corporate Body entities. Each property in the element set has a domain of the class representing one of these entities. @en
This vocabulary describes the entities which may be derived from a URI and the relationships between them, such as Internet Domains, prototcols, file suffixes etc. It was initially issued as part of an April 1st gag, but has utility beyond the initial joke. @en
This is an early version of a vocabulary to describe "open data applications" i.e. applications built using open data. Examples of such applications are listed on government open data catalogues and participant on open data competitions. @en