Business Constraints

• Constraints on the relationships between business concepts that all components must observe.

• Constraint Example: An Order is always associated with exactly one Item on an Account

• Some constraints not easily represented using UML. In such cases, use Natural language but should be defined precisely as well.

• Object Constraint Language (OCL) - part of UML. Provides a formal approach to define constraints precisely.

• Example of OCL :

• Use OCL constraints to develop test suites to ensure component compliance with component infrastructure.