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System Development Life Cycle Essay

819 words - 4 pages

SDLC(Software/System Development Life Cycle):
It is a well defined process by which a system is planned, developed and implemented. The system development starts with the requirement for improving their business system.
There are following activities involves in SDLC :-
· Preliminary Investigation (Problem Identification)
· Feasibility study
· System analysis
· System designing
· Development of software
· System testing
· Implementation & Evaluation
· Maintenance

1. Preliminary Investigation OR Problem Identification:
One of most difficult task of the system analyst is identifying the real problem of the existing system. ...view middle of the document...

Economical feasibility
iii. Operational feasibility
iv. Behavioural feasibility

i. Technical feasibility:
It involves the required and existing computer system, hardware, software & to what extent it can support the proposed application.
It answers following questions :-
o Whether the system can be carried out with existing equipments ?
o Whether the existing software is enough ?
o If a new technology is required how best it can be implemented ?

ii. Economic feasibility:
It involves post benefit analysis to determine the benefit and savings that are expected from new system and compared with costs. It benefits out weight cost then decision is made to design and implement new system.

iii. Operational feasibility:
It concerns with human, organisational and political aspects. It covers technical performance as well as acceptance within the organisation. It determines the general attitude and job skills of existing personals and whether any restructuring of jobs will be acceptable to the current user.

iv. Behavioural feasibility:
It includes how strong the reaction of staff will be towards the development of new system that involves computer’s use in their daily work. So resistant to change is identified.


3. System analysis:
It involves detailed understanding of all important facts of the business area under investigation. This require data collection from a verity of sources such as questionnaires, forms, interviews, study of existing documents. It can be involved the direct observation in the organisation and collected documents to understand the whole existing system.

4. System designing:
In this process the primary object is to identify user requirements and to build a system that satisfies these requirements. Design of the system is mainly the logical design that can be sketch on a paper or on a computer. It includes physical design elements, describes the data to be inputted.

The process involved in manipulation of data & output design represents:-
i. ...

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