DDL dictionary version 2.1.3

Category SUB_CATEGORY

Name:
'sub_category'

Description:

   
     The purpose of a subcategory is to define an association between
     data items within a category and optionally to provide a method to
     validate the collection of items.   For example, the subcategory named
     'cartesian' might be applied to the data items for the coordinates
      x,  y and z.

Category groups:
    ddl_group
    sub_category_group
Category key:
    _sub_category.id

Mandatory category: no