System Analysis and Design
Introduction to System Analysis
and Design
(Definition of System)
- Dr. Mahmoud Abu-Arra
- Mr. Ahmad Al-Ghoul
Learning Objectives



Discuss the impact of information
technology on business strategy and
success
Discuss what is SAD and why is it
important to business
Discuss the impact of IT on business
Avicenna
System Analysis and Design
Introduction to SAD
2
introduction


Organizations are large systems composed of
interrelated subsystems, IT affects productivity,
quality, customer loyalty, and help makes better
decisions.
To ascertain information requirements properly
and design appropriate information systems, it is
of primary importance to understand the impact
of information technology on business strategy
and success, the characteristics of system, and
the components of information systems
Avicenna
System Analysis and Design
Introduction to SAD
3
The Impact of Information
Technology

Information Technology


Avicenna
Combination of hardware and software
products and services that companies use to
manage, access, communicate, and share
information
Information is a vital asset that must be used
effectively, updated, connected, transmitted,
analyzed, and used well
System Analysis and Design
Introduction to SAD
4
The Impact of Information
Technology

The Future of IT


Avicenna
IT has created a new economy, where
advances in hardware, software, networks
provide huge benefits to businesses
worldwide.
Globalization and the increasing internet users
around the world, give IT budgets high
priority, to reach new markets, to build and
manage distributed companies and to reduce
costs
System Analysis and Design
Introduction to SAD
5

Systems Analysis and
Design is the process
people use to create
information systems
data
SA&D
software
people
processes
hardware
Avicenna
System Analysis and Design
Introduction to SAD
6
1
The Impact of Information
Technology

What is Systems Analysis and Design (SAD)?

Systems Analysis: understanding and specifying in detail what
an information system should do

System Design: specifying in detail how the parts of an
information system should be implemented
Why is it important?

Success of information systems depends on good SAD

Widely used in industry - proven techniques

part of career growth in IT - lots of interesting and well-paying jobs!
(rated 2nd best job)
Avicenna
System Analysis and Design
Introduction to SAD
7
The Impact of Information Technology

The Role of Systems Analysis and Design




Information Systems Analysis and Design
 Step-by-step process whereby computer-based
information systems are developed and maintained
Systems Analyst
is a key person analyzing business, depending on
organization function, requirements, identifying
opportunities for improvement, solving problems, and
designing information systems to implement these ideas.
Many failed systems were abandoned because analysts
tried to build wonderful systems without understanding
the organization.
Avicenna
System Analysis and Design
Introduction to SAD
8
The Impact of Information
Technology

Who develops Information Systems?


Avicenna
Before taking the decision to build In-house applications or purchased
systems from outside vendors or both, the organization must determine
what the system is supposed to do.
A company must begin to outlining its business needs and possible IT
solutions, then it can consider the implementation options.
 The choice is not easy because there are many options include
 Internet-based application services
 Outsourcing
 Custom solutions
 Enterprise-wide software strategies
System Analysis and Design
Introduction to SAD
9
Sequence Summary






In this sequence, you learned that information technology
(IT) refers to the combination of hardware, software, and
telecommunications systems that support business
IT supports business operations, improves productivity, and
helps managers makes decisions.
System analysis and design is the process of developing
information systems that transform data into useful
information
System analyst is a key person analyzing business, depending
on organization function, requirements, identifying
opportunities for improvement, solving problems, and
designing information systems to implement these ideas.
Traditionally, companies either developed in-house
applications or purchased software packages from vendors.
Today the choice is much more complex, but it is always
important for companies to plan the system carefully before
considering implementation options.
Avicenna
System Analysis and Design
Introduction to SAD
10
Sequence Summary

In this Sequence we have
Defined the term information technology
 Described the Future of IT
 Defined system analysis and design and why
it is important
 Defined the analyst and the role he/she
plays in information system development

Avicenna
System Analysis and Design
Introduction to SAD
11
Reference
[1] System Analysis and Design, Sixth Edition
Authors: Gary B. Shelly, Thomas J. Cashman and Harry J. Rosenblatt ,
Publisher: SHELLY CASHMAN SEWIES.
[2] Modern Systems Analysis and Design Third Edition
Authors: Jeffrey A. Hoffer , Joey F. George, Joseph S. Valacich
Publisher: prentice hall
Avicenna
System Analysis and Design
Introduction to SAD
12