Root
Object: LOT or NOLOT
Objectified Predicate
Object: LOT or NOLOT
Lexical Object Type
Non Lexical Object Type
Object + Role
Abstract element for constraints
Objectified Predicate
SubType
Mandatory Constraint
Uniqueness Constraint
SubSet Constraint
Equality Constraint
Exclusion Constraint
Frequency Constraint
Irreflexive Ring Constraint
Intransitive Ring Constraint
Acyclic Ring Constraint
Assymetric Ring Constraint
Antisymmetric Ring Constraint
Symmetric Ring Constraint