open
type: DataTypeProperty
type: Property
definition: Open set definition. Classes may refer to anything. Otherwise, the set is closed.
domain: Collection

empty
type: DataTypeProperty
type: Property
definition: Empty set definition. The set itself takes no classes, it may however still define subsets.
domain: Collection

sequenceNumber
type: DataTypeProperty
type: Property
definition: The sequence number determines an explicit ordering of classes for presentational purposes, alphabetic ordering should be assumed if no sequence numbers are present
domain: Collection
target: integer

A named constraint, containing one or more constrain properies
type: Class

Constraint Type, can be set to any, all or none
type: DataTypeProperty
type: Property
domain: A named constraint, containing one or more constrain properies
range: string

A constrain relation
type: Property
type: ObjectProperty
domain: Class
  union of: Concept
  union of: Collection
  union of: A named constraint, containing one or more constrain properies
range: Class
  union of: Concept
  union of: Collection
  union of: A named constraint, containing one or more constrain properies