Namespaces and Application Profiles
Declare names and definitions of vocabulary terms
(e.g. Dublin Core standard, LCSH controlled vocabulary)
Application profiles (APs):
Data elements drawn from one or more namespaces,
and customised for a particular application
- need to declare which elements are being used
- may specify dependencies e.g. mandate schemes
- may adapt existing definitions for local purposes
- may declare rules for content (usage guidelines)
- may specify whether an element is mandatory, optional or repeatable