Systems Analysis and Design
Systems Analysis and DesignSystems Analysis and Design
Systems Analysis and DesignSystems Analysis and Design
Systems Analysis and DesignSystems Analysis and Design
Systems Analysis and Design
Alan Dennis, Barbara Haley Wixom, and Roberta Roth
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
Copyright 2006 © John Wiley & Sons, Inc. All rights reserved.
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Alan Dennis, Barbara Haley Wixom, and Roberta Roth
John Wiley & Sons, Inc.
Slides by Candace S. Garrod
Red Rocks Community College
Application Architecture
Application ArchitectureApplication Architecture
Application ArchitectureApplication Architecture
Application ArchitectureApplication Architecture
Application Architecture
Chapter 8
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
Copyright 2006 © John Wiley & Sons, Inc. All rights reserved.
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Chapter 8
Key Definitions
Key DefinitionsKey Definitions
Key Definitions
Architecture design
Plans for how the system will be distributed
across computers and what the hardware
and software will be used for each computer
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition

PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
Copyright 2006 © John Wiley & Sons, Inc. All rights reserved.
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Application logic
Processing logic of the application
Presentation logic
Information display and user command
processing
Architectural Design Purpose
Architectural Design PurposeArchitectural Design Purpose
Architectural Design Purpose
Determine what parts of the application
software will be assigned to what
hardware.
Hardware options:
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
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Hardware options:
Clients
Input/output devices employed by users
PCs, laptops, handheld devices, cell phones
Servers
Larger computers storing software
Accessible by many users
Server
ServerServer
Server-

-Based Architectures

Server ArchitecturesServer Architectures
Server Architectures
Server-based Architecture
Client-based Architecture
Client
-
server based Architecture
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
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Client
-
server based Architecture
Server
ServerServer
Server-

-Based Architecture
Based ArchitectureBased Architecture
Based Architecture
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
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Client
ClientClient
Client-

-Based Architecture
Based ArchitectureBased Architecture
Based Architecture

Works with multiple
vendors/products
vendors/products vendors/products
vendors/products
through
through through
through
middleware
middlewaremiddleware
middleware
Limitations
Complexity
New programming
languages and
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
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vendors/products
vendors/products vendors/products
vendors/products
through
through through
through
middleware
middlewaremiddleware
middleware
Improved modularity
Improved modularity Improved modularity
Improved modularity
of web

Server Server
Server
Architecture
ArchitectureArchitecture
Architecture
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
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Four
FourFour
Four-

-Tiered Client
Tiered ClientTiered Client
Tiered Client-

-Server
Server Server
Server
Architecture
ArchitectureArchitecture
Architecture
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
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N
NN
N-

-Tiered versus 2

Your Turn
Consider the course registration
system at your university:
What computing architecture does it use?
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
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What computing architecture would you
use if you were replacing it today?
CREATING AN
CREATING AN CREATING AN
CREATING AN CREATING AN
CREATING AN CREATING AN
CREATING AN
ARCHITECTURE DESIGN
ARCHITECTURE DESIGNARCHITECTURE DESIGN
ARCHITECTURE DESIGNARCHITECTURE DESIGN
ARCHITECTURE DESIGNARCHITECTURE DESIGN
ARCHITECTURE DESIGN
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
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Selecting an Architecture Design
Selecting an Architecture DesignSelecting an Architecture Design
Selecting an Architecture Design
Lower costs often used to justify
choice of client-server
Recommended selection process:
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
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Designing the Architecture
Designing the ArchitectureDesigning the Architecture
Designing the Architecture
Technical environment
requirements, driven by business
requirements, often define the
application architecture
PowerPoint Presentation for Dennis, Wixom, & Roth Systems Analysis and Design, 3rd Edition
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application architecture
If not, other nonfunctional
requirements become important
Nonfunctional Requirements and their
Nonfunctional Requirements and their Nonfunctional Requirements and their
Nonfunctional Requirements and their
Implications for Architecture Design
Implications for Architecture DesignImplications for Architecture Design
Implications for Architecture Design
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