System Development Life Cycle:SDLC
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Transcript of System Development Life Cycle:SDLC
SDLC
Shree Manibhai Virani and Smt. Navalben Virani Science College, Rajkot (Autonomous)
Affiliated to Saurashtra University, Rajkot
Ms.Ripal RanparaAssistant Professor,
Department of Computer Science & Information TechnologyShree M.N. Virani Science College Rajkot
SDLC
SystemDeveloment
LifeCycle
System developmentMeans analysis, design.
WHEN SDLC
IS REQUIRED
=>Evolving environmental changes such as Competition.
=>Present system does not satisfy the users information needs.
=>Present system no longer efficiently and effectively meets the Goals of organization.
=>Excessive time spent in correcting errors.Current Reports / Outputs not meting users decision making skills.
=>Escalating customer and vendor complaints.
DETAILED INVESTIGATION
OF PRESENT SYSTEM
1.PRILIMINARY INVESTIGATION
2.DETERMINATION OF SYSTEM REQ.
3.DESIGN OF SYSTEM
4.DEVELOPMENT OF SOFTWARE
5.SYSTEM TESTING
6.IMPLEMANTATION,EVALUATION,MAINTENANCE
PRIMARY INVESTIGATION:request(from manager to director)
clarification(from employee & user)
feasibility(possibility) study*technical feasibility*economic feasibility
*operational feasibility
DETERMINATION OF SYSTEM REQ.
how frequently does it occur?
If a problem exists,how serious is it?
how is it being done?
what is being done?
DESIGN OF SYSTEM
Logical design on paper(just a road map)
DEVELOPMENT OF
SOFTWARE
(programmer is responsible forDevelopment of software)
SYSTEM TESTING
(carry out the final system testAnd formal approval and acceptance
By user and management)
IMPLEMENTATION
To check out and put newEquipment into use and
Train user, install new application
EVALUATIONTo examine strength and
Weakness of system.
MAINTEANACE
(Is necessary to eliminateError in working system
During its working)