UML(Unified Modeling Language) Homework Help

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UML(Unified Modeling Language)

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What is UML?

• UML stands for Unified Modeling Language. It is
  modeling language
• used for designing graphics design.
• It is standard language for specifying,
  visualizing, constructing
• and documenting the artifacts of software
  system.
• UML diagrams are important part of developing
  object oriented
• software and the software development process.

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Use of UML

• UML is an open standard, Graphical notation for
  specifying, visualizing,
• constructing and documenting software
  systems.
• Support for UML in many software package like
  Rational, plugins for IDE like NetBeans, Eclipse.
• By the diagram view the understanding/communicatio
  n of product to customer and developers
  Increases.
• Support for diverse application areas

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History of UML
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Types of UML
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Use case diagram

• overview the usage requirements
• presentations project stakeholders
• "the meat" of the actual requirements
• Actor
• An actor is a person, organization, or external
  system that plays a role in one or more
  interactions with your system
• Use case
• A use case describes a sequence of actions that
  provide value to an actor and is drawn as a
  horizontal ellipse

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Example of Use Case detail
System boundary
Actor
Use case
Online shopping
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Class Diagram
Class diagrams show the classes of the system,
their interrelationships (including inheritance,
aggregation, and association), and the operations
and attributes of the classes.
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Example of Class Diagram
Name

• Associations
• Aggregation
• Generalization

Relations
Attributes
Operations
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Activity Diagram

• UML 2 Activity diagrams helps to describe the
  flow of control of the target system, such as the
  exploring complex business rules and operations,
  describing the use case also the business
  process. It is object-oriented equivalent of flow
  charts and data-flow diagrams (DFDs).

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Example of Activity Diagram

• Activity Diagram

Branch
Start
Action
End
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Object Diagram

• Object Diagrams is similar to class diagrams. It
  is UML structural diagram that shows the instance
  of the classifiers in models. It uses notation
  that is similar to that used in class diagrams.
  It shows the static design of system but from the
  real prospective.

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Example of Object Diagram
Object
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Component Diagram

• Component Diagram represents how components are
  wired together to form longer component or
  software system. The purpose of the component
  diagram is to show h relationship between
  different components.

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Example of Component Diagram
Component
Connection
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Sequence Diagram

• Sequence Diagram is also called interaction
  Diagram which shows the way that how he process
  operates with one another. It focus on the
  message interchange between a numbers of
  lifeline. It models the collaboration of the
  object based on a time sequence.
• The following nodes are used in UML Sequence
  Diagram
• Lifeline
• Execution Specification
• Message
• Combined Fragment
• Interaction Use
• State invariant etc

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Example of Sequence Diagram
Sequence-Actor
Action
Message
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Deployment Diagram

• In UML the Deployment Diagram models the physical
  deployment of artifacts on nodes. It also helps
  to model the physical aspect of an
  Object-Oriented software system. In this type of
  UML Diagrams nodes are appear as boxes and the
  artifacts allocated to each node appear as
  rectangles within the boxes.
• For an example If we want to describe a web site
  with Deployment Diagram then the hardware
  components i.e. nodes exists ,what software
  components i.e. artifacts run on each node and
  how different pieces are connected.
• There are two types of Nodes
• Device Node
• Execution Environment Node

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Example of Deployment Diagram
Connection
Nodes