Guide
- IFLA Library Reference Model
- RDA entities
- RDA elements
- RDA values
- Data transformation
- Application profiles
- Customization
- Development history
For a list of prefixes used for compact URIs (curies), see Curie prefixes.
Attribute elements
An element is categorized as an attribute element if its value is a characteristic of the RDA entity that is the domain of the element.
An attribute element does not reference another RDA entity.
Attribute hierarchies
Some attribute elements are arranged in hierarchies.
A hierarchy may reflect the class hierarchy of RDA entities.
Example of attribute hierarchy reflecting class hierarchy
rdaa:P50395 "has note on person" is a sub-property of rdaa:P50391 "has note on agent" is a sub-property of rdax:P00015 "has note on RDA entity".
A hierarchy may reflect an explicit or implicit sub-typing of elements within an entity.
Example of attribute hierarchy reflecting explicit sub-types within an entity
rdam:P30280 "has manifestation copyright statement" is a sub-property of rdam:P30292 "has manifestation statement".
Attribute values
The value of an attribute element is a string that describes the characteristic, or a reference to a value taken from a vocabulary encoding scheme (VES).
The RDA Registry provides a VES for selected elements. For further information, see RDA values
Example of an attribute element that has an associated RDA VES
rdae:P20001 "has content type" is associated with the RDA Content Type value vocabulary.