CSIS 3600 Systems Analysis and Design

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Component, Deployment and
Package Diagrams
CSIS3600
Partitions and Collaborations
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Creating “subsystems” or larger units
Grouping units that collaborate
May have collaboration among units or partitions
The more messages or contracts between objects,
the more likely they are in the same partition
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Systems Analysis and Design
Copyright 2001 © John Wiley & Sons, Inc. All rights reserved.
Package
• A general construct that groups units together
• Used to reduce complexity of models
• A package diagram shows packages only
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Systems Analysis and Design
Copyright 2001 © John Wiley & Sons, Inc. All rights reserved.
Syntax for Package Diagram
A PACKAGE
Package
A DEPENDENCY RELATIONSHIP
PowerPoint Presentation for Dennis, Wixom & Tegardem
Systems Analysis and Design
Copyright 2001 © John Wiley & Sons, Inc. All rights reserved.
Modification Dependency
• Indicates that a change in one package could cause a change
to be required in another package.
• Example:
– A change in one method will cause the interface for all
objects of this class to change. Therefore, all classes that
have objects that send messages to the instances of the
modified class could have to be modified.
PowerPoint Presentation for Dennis, Wixom & Tegardem
Systems Analysis and Design
Copyright 2001 © John Wiley & Sons, Inc. All rights reserved.
Package Diagram of Dependency
Relationships Among Layers
PowerPoint Presentation for Dennis, Wixom & Tegardem
Systems Analysis and Design
Copyright 2001 © John Wiley & Sons, Inc. All rights reserved.
Package Diagram of Appointment
System
PowerPoint Presentation for Dennis, Wixom & Tegardem
Systems Analysis and Design
Copyright 2001 © John Wiley & Sons, Inc. All rights reserved.
Steps for Identifying Packages and
Building Package Diagrams
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Set the context
Cluster classes together based on shared relationships
Model clustered classes as a package
Identify dependency relationships among packages
Place dependency relationships between packages
PowerPoint Presentation for Dennis, Wixom & Tegardem
Systems Analysis and Design
Copyright 2001 © John Wiley & Sons, Inc. All rights reserved.
Package Diagram of the PD Layer for the
Appointment System
PowerPoint Presentation for Dennis, Wixom & Tegardem
Systems Analysis and Design
Copyright 2001 © John Wiley & Sons, Inc. All rights reserved.
PowerPoint Presentation for Dennis, Wixom & Tegardem
Systems Analysis and Design
Copyright 2001 © John Wiley & Sons, Inc. All rights reserved.
Component Diagram
• A component diagram shows the software components or
modules and their dependencies.
Component Diagram for Class Registration
Symbols of the Component Diagram
• Rectangle with two
smaller protruding
rectangles represents a
component. Components
are named.
• Lollipop (line connected
to a small circle)
represents link to an
interface.
• Dashed Arrow represents
dependency from source
to target.
Rules of the Component Diagram
• Components group classes into logical units of work.
• These components represent source files, executable files,
dynamic link libraries, interfaces, etc.
Component Diagram
Based on Client Server Model
Reserve Seating UI
Reserve Seating
Business Layer
Ticketing System
Computer Based
Training (CBT)
Reserve Seating
Data Layer
(Non-connected
component)
Components and Technical Design
• Component Diagram illustrates the evolving
technology solution
• Loosely defined components are software
modules
• The component diagram models the
software component dependencies for
source code, binary code and executable
components
Deployment Diagram
• Deployment diagrams are used to model
physical processors and devices and the
components that reside on those devices
• Devices on the deployment diagram are
drawn as rectangles
• Components can then be placed inside the
deployment diagram
Deployment Diagram Example
Node 1: Client
Workstations
Node 2: Application
Server
Reserve
Seating
Business
Layer
Reserve
Seating UI
Node 2: Database
Server
Reserve
Seating
Data
Layer
Additional UML Resources
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IBM – Developer Works
– http://www-106.ibm.com/developerworks/
• Search for UML (they have tutorials on sequence diagrams, activity diagrams,
etc.)
• Sequence diagrams
http://www-106.ibm.com/developerworks/library/j-jmod0508/index.html
• Activity diagrams
http://www-106.ibm.com/developerworks/library/tip-drawuml/
UML Workbook
http://www-106.ibm.com/developerworks/java/library/j-jmodcol.html
Rational’s UML Resources
http://www.rational.com/uml/gstart/online.jsp
Listing of some UML tutorials
http://www.find.com.au/tutorials/programming/uml/
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