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What are the different phases of SDLC ?
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Answer Posted / sana khan
different Phases of sdlc:
Feasibility
The feasibility study is used to determine if the project
should get the go-ahead. If the project is to proceed, the
feasibility study will produce a project plan and budget
estimates for the future stages of development.
Requirement Analysis and Design
Analysis gathers the requirements for the system. This stage
includes a detailed study of the business needs of the
organization. Options for changing the business process may
be considered. Design focuses on high level design like,
what programs are needed and how are they going to interact,
low-level design (how the individual programs are going to
work), interface design (what are the interfaces going to
look like) and data design (what data will be required).
During these phases, the software's overall structure is
defined. Analysis and Design are very crucial in the whole
development cycle. Any glitch in the design phase could be
very expensive to solve in the later stage of the software
development. Much care is taken during this phase. The
logical system of the product is developed in this phase.
Implementation
In this phase the designs are translated into code. Computer
programs are written using a conventional programming
language or an application generator. Programming tools like
Compilers, Interpreters, Debuggers are used to generate the
code. Different high level programming languages like C,
C++, Pascal, Java are used for coding. With respect to the
type of application, the right programming language is chosen.
Testing
In this phase the system is tested. Normally programs are
written as a series of individual modules, these subject to
separate and detailed test. The system is then tested as a
whole. The separate modules are brought together and tested
as a complete system. The system is tested to ensure that
interfaces between modules work (integration testing), the
system works on the intended platform and with the expected
volume of data (volume testing) and that the system does
what the user requires (acceptance/beta testing).
Maintenance
Inevitably the system will need maintenance. Software will
definitely undergo change once it is delivered to the
customer. There are many reasons for the change. Change
could happen because of some unexpected input values into
the system. In addition, the changes in the system could
directly affect the software operations. The software should
be developed to accommodate changes that could happen during
the post implementation period.
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Assignment A software house got a project to automate sales/purchase department of a furniture store. The store management is clearly transferred their requirements to the software house management. There is no chance of changing the requirements afterwards. Software house management use waterfall process model to make the project. Given is the progress flow of water-fall process model In waterfall process model, the deliverable (document) produced in one phase serves as an input to the next phase. Suppose you are a project manager who is leading this project. It is decided to work and complete the project using waterfall process model approach. You are required to develop a plan in which the key task is to decide the deliverable that should be built during and after completion of each phase. Also give a description or required contents that must be included in those deliverables. You are not supposed to make the complete project. All you are required to do is to make a Project plan. In that, you need to give a set of deliverables (documents) which according to you, should be developed in each of the phase (Requirements, Designing, implementation, Testing, Maintenance). Also provide contents which should be there in each deliverable. The contents should be clear and have brief explanation. Note:: There are one folder and one file in the attached folder. The file is named as Assignment 4 write-up which is your assignment write-up. The other folder named Project deliverables is the folder in which you are required to organize and place your deliverables. Name of the document/deliverable saved in each folder should be mentioned in the file named checklist (This file is placed in the “Project deliverables” folder) For Example If you produce a deliverable named Requirement Specification (RS) in the “Requirements” phase. You need to do following tasks 1) Finalize the RS contents 2) Save the file in sub-folder named Requirements 3) Write the name of this document in the checklist file under the heading Requirements. Similarly, you need to make and save deliverables of each phase. Not all phases contain one deliverable. There must be some phases having more than one deliverables. PLEASE SIR PRIVIDE ME THE CHECK LIST FOR GIVE SENERION ? CHECKLIST ARE: 1-Requirements 2- Designing 3- Implementation 4- Testing 5- Maintenance
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