does anyone know the system life cycle?

Question

please could you tell me the stages of the system life cycle and brief descriptions.

Answer 1

The Systems Development Life Cycle is arranged into 5 steps:



Analysis:

- Feasibility study

- Technical Feasibility – Technically possible

- Economic Feasibility – Is there enough money?

- Legal Feasibility – Is it legal to build the system?

- Operational Feasibility – Can it be used when it is finished?

- Schedule Feasibility – Is there enough time to complete it?

- Information Gathering

- Questionnaires

- Observation (Evaluation of a Current system)

- Documentation (Output of the system)

- Specification of the system – Important to have a good specification to compare with appraisal to create a good evaluation





Design:

- DfD0, flowcharts and Interface design





Implementation:

- This involves the building of the system, including interface design and programming





Testing:

- Dry run the system, edit algorithms and write reports about the integrity of the system

- Testing should be planned before the implementation phase rather than after





Maintenance

- The user may wish to add to the system, Updating of the system and there may be bugs that have been discovered in the system

Sometimes updating the system is not enough and then a new system will have to be made, which means the cycle will start over again.

Answer 2

it encompasses the full undertaking from: id of desire for the gadget to progression of the gadget to implementation of the gadget to maintenance of the gadget to upgrading the gadget to understanding the gadget is out of date to decommissioning the gadget and changing it with some thing else. each section has costs like spare areas, education for the purchasers, salaries for the builders, finding out of the enhancements, etc. the full existence cycle is delivery to dying of the gadget. perhaps you're actually not sufficiently old to have considered finished product existence cycles....to have considered a gadget come into being and later get replaced. yet no longer something lasts continuously. think of of a house or development. somebody makes a decision to construct it. money the development, hires the employees, buys the components to construct it, hires an architect, makes a decision what number thoughts etc. then it is supplied, it is going to be maintained. the selections made in development it impression how high priced it is to maintain. like how lots insulation you put in determines how lots it costs to warmth it as an occasion (and different issues.) then it is going to in all probability desire redesigning for the duration of its existence, to alter the homes, partitions, taps, heater etc. ultimately (in perhaps 2 hundred years) it is going to now no longer be a probable development and it is going to be demolished. some thing else could be geared up there or it could desire to bypass decrease back to grass or a backyard...it fairly is the finished existence cycle of the development.

Answer 3

hey there! That's one of the lessons our professor taught us. It's P.A.D.I.O.



Planning

Analysis

Design

Implementation

Operations, security, maintenance..



Way to go!