As software systems became more complex, it became harder to talk and reason about them. Unified Modeling Language (UML) attempted to correct for this by providing a visual, diagrammatic approach to communicate the structure and function of a program. If a picture is worth a thousand words, a UML diagram might be worth a thousand lines of code…

Key Terms

Some key terms to learn in this chapter are:

• Unified Modeling Language
• Class Diagrams
• Typed Elements
• Constraints
• Stereotypes
• Attributes
• Operations
• Association
• Generalization
• Realization
• Composition
• Aggregation

Key Skills

The key skill to learn in this chapter is how to draw UML class diagrams.