This presentation talks about the system development life cycle.

1. Chapter 1: Lesson 2
Introduction to
SYSTEM
DEVELOPMENT
LIFE CYCLE

2. At the end of this chapter, the students should able to :
1. Learn what is
 System Development Life Cycle
 System Analyst
 SDLC Phase (overview)
• Phase 1 –Feasibility Study or Planning
• Phase 2 –Requirement Analysis
• Phase 3 –Design
• Phase 4 –Coding
• Phase 5 –T
esting
• Phase 6- Installation/deployment
• Phase 7 - Maintenance

3. What is
SDLC
1
https://www.tutorialspoint.com/system_analysis_and_design/system_analysis_and_design_development_life_cycle.htm
(System Development Life Cycle)

4. System Development Life Cycle
is a conceptual model which includes policies and
procedures for developing or altering systems throughout their
life cycles.
SDLC is used by analysts to develop an information system.
SDLC includes the following activities −
https://www.tutorialspoint.com/system_analysis_and_design/system_analysis_and_design_development_life_cycle.htm
1) Requirements;
2) Design;
3)Implementation;
4) Testing;
5)Deployment;
6)Operations;
7)Maintenance
SDLC

5. What is
Systems Analyst
2

6. Systems analysts transform user requests or requirements into
technical design specifications and act as a liaison between
clients/IT professionals and technology vendors.
The main responsibility of systems analysts is to figure out how to solve a
problem by linking different computers or systems and to specify what
platform, protocols, software, hardware and communications medium
can be used to solve that problem.
Systems Analyst
https://www.techopedia.com/definition/4816/systems-analyst

7. Systems Analyst
Main Roles
• Communicate with customers and stakeholders to learn and
document requirements in order to create a technical
specification
• Interact and coordinate with developers and implementers
• Help perform system testing
• Deploy the system
• Help with technical documentation like manuals
• Deliberate over post-project assessment
https://www.techopedia.com/definition/4816/systems-analyst

8. 3
SDLC
(System Development Life Cycle)
PHASES

9. Phase 1
https://www.tutorialspoint.com/system_analysis_and_design/system_analysis_and_design_development_life_cycle.htm
Feasibility Study or Planning
• Define the problem and scope of existing system.
• Overview the new system and determine its
objectives.
• Confirm project feasibility and produce the project
Schedule.
• During this phase, threats, constraints, integration
and security of system are also considered.
(A feasibility report for the entire project is created at the
end of this phase)

10. Phase 2
https://www.tutorialspoint.com/system_analysis_and_design/system_analysis_and_design_development_life_cycle.htm
Analysis and Specification
• Gather, analyze, and validate the information.
• Define the requirements and prototypes for new
system.
• Evaluate the alternatives and prioritize the
requirements.
• Examine the information needs of end-user and
enhances the system goal.
(A Software Requirement Specification (SRS) document,
which specifies the software, hardware, functional, and
network requirements of the system isprepared at the
end of this phase)

11. Phase 3
System Design
• Includes the design of application, network,
databases, user interfaces, and system interfaces.
• T
ransform the SRS document into logical structure,
which contains detailed and complete set of
specifications that can be implemented in a
programming language.
• Create a contingency, training, maintenance,
and operation plan.
• Review the proposed design. Ensure that the final
design must meet the requirements stated in SRS
document.
• Finally, prepare a design document which will be
used during next phases.
https://www.tutorialspoint.com/system_analysis_and_design/system_analysis_and_design_development_life_cycle.htm

12. Phase 4
Coding
• Implement the design into source code through
coding.
https://www.tutorialspoint.com/system_analysis_and_design/system_analysis_and _design_development_life_cycle.htm

13. Phase 5
https://www.tutorialspoint.com/system_analysis_and_design/system_analysis_and_design_development_life_cycle.htm
Testing
• Combine all the modules together into training
environment that detects errorsand defects.
• A test report which contains errors is prepared
through test plan that includes test related tasks
such as test case generation, testing criteria, and
resource allocation fortesting.

14. Phase 6
https://www.tutorialspoint.com/system_analysis_and_design/system_analysis_and_design_development_life_cycle.htm
Installation/deployment
• Integrate the information system
environment and install the new system.
into its

15. Phase 7
Maintenance/Support
• Include all the activities such as phone support or
physical on-site support for users that is required
once the system isinstalling.
• Implement the changes that software might
undergo over a period of time, or implement any
new requirements after the software is deployed
at the customer location.
• It also includes handling the residual errors and
resolve any issues that may exist in the system
even after the testing phase.
• Maintenance and support may be needed for a
longer time for large systems and for a short time
forsmaller systems.
https://www.tutorialspoint.com/system_analysis_and_design/system_analysis_and_design_development_life_cycle.htm

17. Advance Lesson :
1. System Development Life Cycle (SDLC)
 SDLC
 Phase 1 –Feasibility Study orPlanning
 Phase 2 –Requirement Analysis
 Phase 3 –Design