System Development

1. How would you show the existence of a list in a class diagram?
2. How would you show multiple classes relations to one another?
3. Provide an example to various types of relations
4. Define the term multiplicity

Question 1

Amongst the properties listed you would define a list as such Name | DataType<>

Question 2

Multiple arrows pointing from one to another vv.

Question 3

1️⃣ Association (→)

• Represents a relationship between two classes
• Example: A Car has a Driver

2️⃣ Aggregation (◇)

• A "whole-part" relationship where the part can exist independently
• Example: A Library contains Books, but a Book can exist without the Library

3️⃣ Composition (◆)

• A stronger "whole-part" relationship where the part cannot exist without the whole
• Example: A House has Rooms, and if the House is destroyed, so are the Rooms