The document discusses the systems development life cycle (SDLC), which is a process for planning, creating, testing, and deploying an information system. It describes the key phases of the SDLC as planning, analysis, design, implementation, and maintenance. In the planning phase, a project request is submitted and feasibility is determined. In the analysis phase, preliminary investigation and detailed analysis of requirements are conducted. The design phase develops the user interface and application architecture. In implementation, programs are written, tested, installed, and users are trained. Maintenance ongoing includes corrections, adaptations to changes, and security controls.

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Members:
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2.M. Jahangir 0138
3.Habib Ur Rehma0128
4.Nabeel 0139

3. Systems Development
Life Cycle
Topic:

4. What is the System
Development Cycle?
 The systems development life
cycle(SDLC), is a term used in
systems engineering, information systems
and software engineering to describe a
process for planning, creating, testing, and
deploying an information system.

5. What is an information system
(IS)?
System—Set of components
that interact to achieve
Next
Hardware, software, data,
people, and procedures that
work together to produce
Hardware, software, data,
people, and procedures that
work together to produce
quality information
quality information
System—Set of components
that interact to achieve
common goal
common goal
Businesses use many types of
Businesses use many types of
systems
systems

6. What Initiates the System
Development Cycle?
What are some reasons to create or modify an
information system?
Next
To improve
existing system
Competition can
lead to change
To correct problem
in existing system
Outside group may
mandate change

7. Participants of SDLC:
1. Systems analyst?
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8. Participants of SDLC: (Cont…)
2. Project team?
Consists of users, systems analyst, and other IT professionals
Next
Formed to work on project from beginning to end
Project leader—one member of the team who
manages and controls project budget and schedule

9. What are the phases of the
system development cycle?

10. 1. Planning Phase
What is the planning phase?
Next
Begins when steering committee receives project request
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11. What is feasibility?
Next
Measure of
how suitable
system
development
will be to the
company
Operational
feasibility
Schedule
feasibility
Four feasibility
tests:
Technical
feasibility
Economic
feasibility
(also called
cost/benefit
feasibility)

12. 2. Analysis Phase
What is the analysis phase?
Next
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13. Analysis Phase (cont..)
What is the preliminary investigation?
 Determine exact nature of problem or improvement
and whether it is worth pursuing
 Findings are presented in feasibility report, also known as a feasibility study
Next

14. Analysis Phase (cont….)
What is detailed analysis?
Next
1. Study how current system
works
2. Determine user’s wants, needs,
and requirements
3. Recommend solution
Sometimes called llooggiiccaall ddeessiiggnn

15. Analysis Phase (cont…)
Presented to
steering
committee,
which decides
how system will
be developed
What is the
system proposal?
Next
Assesses
feasibility
of each
alternative
solution
Recommends
the most
feasible
solution for
the project

16. 3. Designing Phase:
At this stage you design the User
Interface
1. Identify all necessary inputs, outputs
and processes.
2. Design internal and external controls
3. Show programmers how to
transform the logical design into
program modules and code.
(application architecture)

17. 4. Implementation Phase:
Programs are written, tested and
documented.
The system is installed.
Final preparations are made to
convert data to the new system’s
files, and to train users).
A system evaluation is conducted

18. 5. Maintenance:
During this stage;
Maintenance corrects errors, and
adapts to changes in the environment
such as new tax rates.
Enhancement gives new features and
benefits.
Security controls safeguard the
system.