Lecture 3-Class diagram notation

Question 1

What are the 3 dependencies types?

Answer 1

• having attribute of supplier type
• sending attribute to supplier
• receiving a parameter of the supplier type

*supplier=superclass or interface

Question 2

Why composition over aggregation(3)?

Answer 2

Composition is the ‘strong’ kind of whole-part aggregation :
-It implies that an instance of the part belongs to only one composite instance at a time
-The part must always belong to a composite
-The composite is responsible for the creation and deletion of its parts.

Question 3

What is the order of diagrams?

Answer 3

1. Domain diagram : indicates which object should be in a sequence diagram
   2.Sequence diagram: indicates the objects and their messages
   3.Static class diagrams