Ch08-Architecture Design

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Systems Analysis and DesignSystems Analysis and Design
5th Edition5th Edition
Chapter 8. Architecture DesignChapter 8. Arc...

Chapter 8 Outline
Elements of an architecture
design.
Creating an architecture design.
Hardware and software
specificat...

INTRODUCTION
 Architecture design
– Plans for how the system will be distributed across
multiple computers and what hardw...

ELEMENTS OF AN ARCHITECTURE
DESIGN
 The objective of architecture design
is to determine how the software
components of t...

Architectural Components
 The major architectural components of any system
are the software and the hardware.
 All softw...

(cont’d)
The three primary hardware
components:
- Client computers: Input-output devices
employed by users (e.g., PCs, la...

Client-Server Architectures
© Copyright 2011 John Wiley & Sons, Inc. 8-7
Client-server architectures balance the
processi...

(cont’d)
© Copyright 2011 John Wiley & Sons, Inc. 8-8

(cont’d)
 Client-server architectures have four important
benefits.
- Scalable
- Can support different types of clients a...

Client-Server Tiers
 There are many ways in which the
application logic can be partitioned
between the client and the ser...

(cont’d)
Three-tiered architecture
© Copyright 2011 John Wiley & Sons, Inc. 8-11

(cont’d)
n-tiered architecture
© Copyright 2011 John Wiley & Sons, Inc. 8-12

Less Common Architectures
Server-Based Architectures
© Copyright 2011 John Wiley & Sons, Inc. 8-13

Client-Based Architectures
© Copyright 2011 John Wiley & Sons, Inc. 8-14

Advances in Architecture
Configurations
Advances in hardware, software, and
networking have given rise to a
number of new...

Virtualization
 Virtualization refers to a creation of a virtual
device or resource, such as a server or storage
device.
...

Cloud Computing
 Cloud computing – everything from
computing power to computing
infrastructure, applications, business
pr...

(cont’d)
 Cloud computing can be
implemented in three ways:
- private cloud,
- public cloud, and
- hybrid cloud.
 At thi...

(cont’d)
 Advantages of cloud computing
1. The resources allocated can be increased or
deceased based on demand.
2. Cloud...

Comparing Architecture Options
Most systems are built to use the existing
infrastructure in the organization, so often
th...

CREATING AN ARCHITECTURE DESIGN
 Creating an architecture design begins with
the nonfunctional requirements.
Refine the ...

Operational Requirements
© Copyright 2011 John Wiley & Sons, Inc. 8-22

Performance Requirements
© Copyright 2011 John Wiley & Sons, Inc. 8-23

Security Requirements
© Copyright 2011 John Wiley & Sons, Inc. 8-24

Cultural and Political Requirements
© Copyright 2011 John Wiley & Sons, Inc. 8-25

Designing the Architecture
In many cases, the technical environment
requirements as driven by the business
requirements d...

(cont’d)
© Copyright 2011 John Wiley & Sons, Inc. 8-27
Nonfunctional Requirements and
Their Implications for Architecture...

HARDWARE AND SOFTWARE
SPECIFICATION
The design phase is also the time to
begin selecting and acquiring the
hardware and s...

(cont’d)
 Sample hardware and software specification
© Copyright 2011 John Wiley & Sons, Inc. 8-29

(cont’d)
 First, you define software
– Define the operating system and any special purpose
software
– Consider additional...

(cont’d)
Factors in hardware and software selection
© Copyright 2011 John Wiley & Sons, Inc. 8-31

SUMMARY
Application architecture.
- Client-server architecture.
- Advances in architecture configurations:
virtualization...

Copyright 2011 John Wiley & Sons, Inc.
All rights reserved. Reproduction or translation of this work
beyond that permitted...

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