Section 11.4. Constraints

11.4. Constraints

Stereotypes give roles to elements. Tagged values provide role-specific information enriching the element in its role. While atomically the element knows its role and has all the information to fulfill it, the element must still interact with its neighbors. The element and their roles must be in harmony with the architectural vision. The element must also be internally consistent. Constraints (see "Constraints" in Chapter 2) provide the mechanism to specify rules for correct usage of the stereotyped elements.