Data Perspective: ER & Class Diagrams

What you will learn

• Study Entity-Relationship Diagrams (Chen Notation).
• Study Modeling Elements.
• Study UML Class Diagrams.
• Study Modeling Elements.

Lesson summary

This lesson introduces Data Perspective: ER & Class Diagrams within the Model-Based Documentation module. It provides a structured overview of models and their properties, goal models (AND/OR trees), use cases and UML use case diagrams, data perspective (ER and class diagrams), and functional/behavioral perspectives (DFD, activity diagrams, statecharts, state machines). The main areas are Entity-Relationship Diagrams (Chen Notation), Modeling Elements, UML Class Diagrams, Modeling Elements, ER vs. Class Diagrams. The learning objectives are to study Entity-Relationship Diagrams (Chen Notation); study Modeling Elements; study UML Class Diagrams. You will see how the terminology fits into practical requirements-engineering work, which distinctions matter for the Foundation Level syllabus, and where candidates commonly confuse closely related ideas. The complete lesson adds worked examples, comparisons, interactive revision activities, and short checks that help you apply the concepts instead of memorising isolated definitions. Use this preview to understand the scope and decide where the lesson belongs in your study plan; enrolment unlocks the full written explanation and exercises.