classification

Classification

A relationship where a thing is a member of a class.

Note: This entity type is replicated as the member__of relationship.

Attributes

• classifier: A relationship type where a classification has exactly one classifier.
• member: A relationship type where a classification has exactly one member.

EXPRESS Specification

Schema

ENTITY classification
  SUBTYPE OF(relationship);
    classifier : class;
    member     : thing;
END_ENTITY;

Inheritance Graph

ENTITY classification;
  ENTITY thing;
    member__of : OPTIONAL SET [1:?] OF class;
  ENTITY abstract_object;
  ENTITY relationship;
    member_of  : OPTIONAL SET [1:?] OF class_of_relationship;
  ENTITY classification;
    classifier : class;
    member     : thing;
END_ENTITY;