Object-Class Diagram

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Structural DiagramsDifference B/W Object
Class Diagram

• Submitted To
• Sir INAM_UL_HAQ
• Submitted By
• Zunaira Gohar(1004)
• University of Okara Renala Khurd

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Table of Contents

• Class Diagram
• Purpose of Class Diagram
• Explain class Diagram with Example
• Object Diagram with Example
• Difference B/W Class Diagram Object Diagram

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Class Diagram

• The class model captures the static view of an
  system
• by characterizing the objects in the system
• the relationship between the objects
• and the attributes and operations for each class
  of object
• Class diagrams can also be used for data modeling

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Cont

• describes the attributes and operations of a
  class and also the constraints imposed on the
  system.
• widely used in the modeling of object oriented
  systems
• The class diagram shows a collection of classes,
  interfaces, associations, collaborations and
  constraints. It is also known as a structural
  diagram.

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Purpose of Class Diagram

• The purpose of the class diagram can be
  summarized as
• To describe objects.
• Analysis and design of the static view of an
  application.
• Describe responsibilities of a system.
• Base for component and deployment diagrams.

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Class Diagram

• Example

Class Name
Attributes
Operations
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Class Diagram

• Example 2
• Concept Super Sub Class

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Object Diagram

• Object
• An object diagram shows individual objects and
  their relationships
• Helpful for documenting test cases
• A class diagram corresponds to an infinite set of
  object diagrams.

JoeSmithPerson
MaySharpPerson
Person
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Difference B/W Class Object Diagram

• First, there is the division of class and object.
• A class is an abstraction
• an object is one concrete manifestation of that
  abstraction.
• In the UML, you can model classes as well as
  objects, as shown in following Figures

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Class and Object