Lecture 4 - Class Diagram Notation

Question 1

TF: Association names are kept in DCD (Design Class Diagrams)

Answer 1

False. Association name is usually removed

Question 2

What is a qualified association?

Answer 2

A form of association where a small box attached to association. Box usually contains a key-like attribute.
(ex: ISBN number, studentID, itemID could be qualifiers)

Question 3

Association classes help simplify what?

Answer 3

many-to-many multiplicity

Question 4

How are dependencies represented in Class Diagram Notation?

Answer 4

Represented with a dashed arrow with a keyword (stereotype) next to it to indicate type of dependency (keyword format: «»)
[ex: «call» «create»]

Question 5

How are generalizations represented in Class Diagram Notation?

Answer 5

solid line with a hollow arrow head

Question 6

What are generalizations in Class Diagram Notation?

Answer 6

Represent child-parent relationships

Question 7

How are realizations represented in Class Diagram Notation?

Answer 7

Dotted line with hollow arrow head

Question 8

What are realizations in Class Diagram Notation?

Answer 8

Relationship between two elements, usually one class and one interface

Question 9

What are the two ways to represent an interface?

Answer 9

1. A box (similar to class box) with <> on top of name
2. A small hollow circle with interface name next to it (lollipop notation)

Question 10

What diagram indicates which object should be in a sequence diagram?

Answer 10

Domain diagram

Question 11

Which diagram indicates the objects and their messages?

Answer 11

Sequence diagram

Question 12

TF: You can easily create a static class diagram from a sequence diagram

Answer 12

True