Explain the elements of a collaboration diagram.
Classifier Role: - It only classifies a role.
Association Role: - It shows the relation b/w two classifier roles.
Multi-Object:- The Multi-Object is used to show the operation related to the entire set of objects rather than on a single object.
Constraint: - The Conditions which must be maintained as true in order that the system is valid.
2-Element Constraint: - It shows the constraint on two classes or associations.
OR constraint: - It shows an OR constraint on 2 classes or associations.