 Object Constraint Language

Object Constraint Language (OCL) is a formal language used to describe expressions on models in a consistent and precise manner. It is primarily associated with the Unified Modeling Language (UML) and is used to specify constraints and business rules that apply to UML models, which can include object-oriented systems and their components. ### Key Features of OCL: 1. **Expression Language**: OCL is used to define constraints in a declarative fashion.