04class

Introduction to Rational Rose 98i

Module 4: Class Diagram

Objectives: Class Diagram

You will be able to: Create classes Add attributes and operations to classes Create stereotypes for classes Create packages Relocate classes Create class diagrams Create relationships

Classes in the Browser

Namespaces

Documenting Classes

Using the Class Specification - Stereotypes

Using the Class Specification - Attributes

Using the Class Specification - Operations

Attributes and Operations and the Browser

Attribute Visibility Options

NewClassPublic attributeProtected attributePrivate attribute

NewClass+ Public attribute# Protected attribute- Private attribute

Operation Visibility Options

NewClass

Public operation()Protected operation()Private operation()

NewClass

+ Public operation()# Protected operation()- Private operation()

Packages in the Browser

Moving Classes to Packages

What is a Class Diagram?

A class diagram is a view of the static structure of a system Models contain many class diagrams

Class diagrams contain: Packages, classes, interfaces, and

relationships Notation:

Package Name

Class NameInterface Name

<<Interface>>

The Main Class Diagram

The logical view initially contains one class diagram This diagram is called Main

The Main class diagram is typically a view of the high level packages in the logical view

Class Diagram Drawing Toolbar

Attachment

Association Relationship

Association Attribute

Dependency Relationship

Inherits Relationship

Package

Selection Tool

Aggregation Relationship

Interface

Realizes Relationship

Main Class Diagram-Registration System

Main Diagram Business Services Package

Creating Classes on a Class Diagram

Class Name Completion

Creating Attributes via a Class Diagram

Creating Operations via a Class Diagram

Additional Class Diagrams

Additional class diagrams are added as needed

They show additional “views” of the packages and classes in the model

Examples: View of classes participating in a scenario View of the “private” classes in the package View of one or more classes and their

attributes and operations View of an inheritance hierarchy

Additional Class Diagram

Showing Stereotypes

Displaying Attributes and Operations

Displaying the Operation Signature

Displaying Visibility

Relationships

Class diagrams may contain the following relationships: Association, aggregation, dependency, realize,

and inheritance Notation:

Association Aggregation Dependency

Inheritance Realize

Package Relationships

Class Relationships

Navigation

Unidirectional

Bi-directional

Associations / Aggregations in the Browser

Navigable

Not Navigable

Naming Associations

Role Names

Zero or more0..*

One or more1..*

Zero or one0..1

Specified range2..7

Exactly one1

Multiplicity Indicators

Each end of an association or aggregation contains a multiplicity indicator Indicates the number of objects participating in

the relationship

Multiplicity Indicators

Aggregation Indicators

Reflexive Relationships

Constraints

Qualifiers

Association Classes

Deleting

If a package, class, association, or aggregation is deleted from the Browser then it is deleted from the model

If a package, class, association, or aggregation is deleted from a Class Diagram, it is deleted from the diagram but still remains in the model

Exercise: Classes

Use the pictures on the following pages to create the packages, classes, and class diagrams for your model

Exercise: Classes in the Browser

Exercise: Documenting Classes

Exercise: Stereotypes

Exercise: Packages in the Browser

Exercise: Relocating Classes

Exercise: Creating Attributes

Exercise: Creating Operations

Exercise: The Main Class Diagram

Exercise: Package Main Class Diagram

Exercise: Additional Class Diagram

Exercise: Displaying Attributes/Operations

Exercise: Relationships

Exercise: Reflexive Relationships

Exercise: Role Names

Exercise: Multiplicity

Exercise: Constraints

04class

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