Dublin Core
- name -- label assigned to the data element
- identifier -- unique identifier assigned to the data element
- version -- version of the data element
- registration authority -- entity authorised to register the data element
- language -- language in which the data element is specified
- definition -- statement to characterize essential nature of the data element
- obligation -- to indicate whether the data must always or sometimes be present
- datatype -- type of data that can be represented in the value of the data element
- maximum occurrence -- limit to the repeatability of the data element
- comment -- remark concerning the application of the data element
