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Complete
Complete is a constraint added to a set of generalization relationships to indicate that all children have been specified. This means that any instance of the parent must be an instance of at least one of the children within the set. All children that are governed by the constraint must have the same discriminator.
Explanation
This constraint indicates that the family represented by the generalization is not expecting additional children in the future. This does not mean that a new child can never be added. It does imply that if a new child is added that this is not an expected addition and may require changes to be made. The generalization relationships that are constrained with complete must have the same discriminator, meaning that they must all be members of the same type of family.
A generalization relationship is related because it is the base element to which the complete constraint has been added. The complete constraint adds conditions and propositions to the underlying or base generalization relationship. The complete constraint is one of the UML standard elements.
