Field Object (Model Designer)
Defines a field within an entity. A field can be either an attribute or a role. The Field object is not used. When Field is specified, a subtype is used instead. This object inherits properties from the ModelItem object.
An ordered list of attributes which are considered variations of this attribute. For example, Year, Month, and Day are variations of Date. This object is not permitted if this field is a variation of another field.