Information technology for managers

1. INFORNATIO
N
TECHNOLOG
Y FOR
MANAGERS
SYSTEM DEVELOPMENT LIFE CYCLE
PRESENTED BY
MANTESH S.B.
RAKSHITH K.R.

2. SDLC is a process followed for a
software project, within a software organization.
It consists of a detailed plan describing how to
develop, maintain, replace and alter or enhance
specific software. The life cycle defines a
methodology for improving the quality of
software and the overall development process.
WHAT IS SDLC?

3. Testingexellence.com

4. RECOGNITION
OF NEED
• It can be environmental based or organizational
Based.
• Ideas are generated to advance technology.
• User originated ideas prompt initial
investigation.

5. FEASIBILITY
STUDY
• Economic: cost benefit analysis.
• Technical: we need to check whether existing
computer can support the system.
• Behavioral: an estimate should be made of
how strong a reaction the user staff is likely to
have toward the development of a
computerized system.

6. FEASIBILITY
STUDY
(STEPS)
Form a project team and appoint a leader.
Prepare system flowcharts.
Enumerate potential candidate system.
Describe and identify characteristics of candidate
system.
Evaluate performance.
Select best candidate system.

7. ANALYSIS
• In the analysis stage an in-depth analysis is
performed to obtain a detailed understanding of
the business needs.
• Tools used : DFD’s, interviews, on-site
observation, questionnaire etc.
• Training, experience and common sense are
required for collecting information to do
anlaysis.

8. DESIGN
• It is the most creative and challenging phase of
SDLC.
• It defines the final system and refers to the
technical specifications.
• DFD’s are used to show the flow of system.
• Two phases: 1. Logical design and physical design
• Logical design: specifies user needs.
• Physical design: tells the programmer what the
candidate system must do.

9. IMPLEMENTATION
• Less creative then designing phase.
• It is of 3 types:
1. Implementation of a computer system to replace a
manual system.
2. Implementation of a new computer system to
replace an existing one.
3. Implementation of a modified application to
replace existing one on same computer.

10. TESTING
• Testing is the last phase of the software development
life cycle before the software is delivered to
customers. During testing, experienced testers start
to test the system against the requirements.
• The testers aim to find defects within the system as
well as verifying whether the application behaves as
expected and according to what was documented in
the requirements analysis phase.
• This cycle is repeated until all requirements have
been tested and all the defects have been fixed and
the software is ready to be shipped.

11. MAINTENANCE
• The emphasis during this phase is to ensure that
needs continue to be met and that the system
continues to perform according to specifications.
• Routine hardware and software maintenance and
upgrades are performed to ensure effective system
operations.
• User training continues during this phase, as
needed, to acquaint new users to the system or to
introduce new features to current users.

12. CONCLUSION
• All the stages in the software development life
cycle defined above are applicable to any
software development methodology, but the
duration and the activities in each phase depend
on whether you follow the V model
development methodology

13. REFERENCES
• Https://www.Testingexcellence.Com/software-development-life-
cycle-sdlc-phases
• Https://www.Slideshare.Net
THANK YOU