The document discusses information systems analysis and design (ISAD). It defines ISAD as the process of understanding, designing, and implementing an information system for an organization to improve efficiency and effectiveness. The document outlines the main steps in ISAD as system analysis, requirements gathering, system design, implementation, and maintenance. It also describes the systems development life cycle (SDLC) as a systematic approach consisting of planning, analysis, design, implementation, and maintenance phases.

1. Information System
Analysis and Design
Lec 1
Dr. Omar Adel Al-Jubouri
AL-Khwarizmi College of Engineering
University of Baghdad
Department of Information and Communications Engineering

2. References
• essentials_of_systems_analysis_and_design_5th_by_valacich.
• System Analysis and Design Tutorial.

3. Objectives
• Define information systems analysis and design.
• Discuss the modern approach to systems analysis and design that combines
both process and data views of systems.
• Describe the role of the systems analyst in information systems development.
• Describe the information systems development life cycle (SDLC).
• List alternatives to the systems development life cycle, including a description
of the role of computer-aided software engineering (CASE) tools in systems
development.

4. Information systems analysis and
design
•Information System Analysis and Design
(ISAD) is the process of understanding,
designing, and implementing an information
system for an organization.
•The goal of ISAD is to improve the efficiency
and effectiveness of the organization by using
technology.

5. ISAD involves several steps, including:
• System Analysis: In this phase, the current system
is analyzed to identify problems and opportunities for
improvement. The analysis includes gathering data
about the current system, identifying user needs,
and documenting the current processes.
• Requirements Gathering: In this phase, the
requirements of the new system are gathered from
stakeholders. This includes identifying the features
and functionality that the new system should have.

6. ISAD involves several steps, including:
• System Design: In this phase, the new system is
designed based on the requirements gathered in the
previous phase. The design includes the architecture,
database design, interface design, and other
components necessary for the system.
• Implementation: In this phase, the new system is
developed and installed. The implementation
includes coding, testing, and installation of the
system.

7. ISAD involves several steps, including:
• Maintenance: In this phase, the system is
monitored, maintained, and updated as needed to
ensure that it continues to meet the needs of the
organization.

8. Systems Development Life Cycle
(SDLC)
• The Information Systems Development Life Cycle (SDLC) is a
systematic approach to developing and implementing an
information system. The SDLC consists of a series of phases
that provide a framework for the development of information
systems.

9. systems development life cycle
(SDLC)

10. Phases of the SDLC

11. Phases of the SDLC

12. Phases of the SDLC

13. Phases of the SDLC

14. Phases of the SDLC

15. Phases of the SDLC

16. Phases of the SDLC

17. Information System
Analysis and Design
Lec 2
Dr.Omar Adel Al-jibouri
AL-Khwarizmi College of Engineering
University of Baghdad
Department of Information and Communications Engineering

18. systems analysis and design: Core
Concepts
Methodologies: are a sequence of
step-by-step approaches that help
develop your final product.
Techniques: are processes that you, as an
analyst, will follow to help ensure that your
work is well thought-out, complete, and
comprehensible to others on your project
team.
Tools: are computer programs, such
as computer-aided software
engineering (CASE) tools, that make
it easy to use specific techniques.

19. 1. Components : An irreducible
part or aggregation of parts
that makes up a system; also
called a subsystem.
2. Interrelated components:
Dependence of one part of the
system on one or more other
system parts.
3. Boundary :The line that marks
the inside and outside of a
system and that sets off the
system from its environment.
4. Purpose: The overall goal or
function of a system.
Definition of a System and Its Parts

20. 5. Environment: Everything external to a system that interacts
with the system.
6. Interfaces :Point of contact where a system meets its
environment or where subsystems meet each other
7.Constraints :A limit to what a system can accomplish.
8. Input
9. Output

21. systems development life cycle
(SDLC)
• Traditional methodology used to develop, maintain, and replace
information systems.
• Phases in SDLC:
• Planning
• Analysis
• Design
• Implementation
• Maintenance

22. systems development life cycle (SDLC)
1- Waterfall
3-spiral
2-incrementel

23. systems development life cycle
(SDLC)
The first phase in the SDLC, systems planning and selection,
has two primary activities. First, someone identifies the need
for a new or enhanced system
The organization’s information system needs many result from:
 Requests to deal with problems in current procedures.
 The desire to perform additional tasks.
 The realization that information technology could be used to
capitalize on an existing opportunity.
1. Planning Phase

24. • The second task in the systems planning and selection phase
is to investigate the system and determine the proposed
system’s scope. The team of systems analysts then produces
a specific plan for the proposed project for the team to follow.
This baseline project plan customizes the standardized SDLC
and specifies the time and resources needed for its execution.