You can use nouns or noun phrases to name your classes, and follow the naming conventions of your programming language. To draw a class diagram, you can use a rectangle to represent a class ...

Multiplicity in UML diagrams ... and the system requirements. You can use a domain model, a use case diagram, or a class diagram to capture the main concepts and relationships.

This paper deals with the concept of validating the class diagram associated with OCL constraints using a formal method i.e., Colored Petri Nets (CPN). The case for elevator problem illustrates ...