SDLC and phases of SDLC?

What is SDLC?

            SDLC describes life cycle process of development of Software

Process of SDLC:

SDLC process contains below phases:

1.     Requirement Gathering

2.     Analysis

3.     Design

4.     Coding

5.     Testing

6.     Delivery

7.     Maintenance

1. Requirement gathering and Analysis:

            Task: Interacting with customers and gathering the requirements

            The business analyst (BA) will take appointment from the customer and propose RFP (Request for Proposal)

If Customers are agreed to give projects then customers will prepare Software Requirement Specification (SRS) document and give to the company.

Now Engaged managers are responsible for the following:

1.     He deals with the excess cost of the project

2.     He is responsible for the prototype demonstration

Prototype: Prototype is a roughly and rapidly developed model which is used for demonstrating to the client in order to gather the clear requirements and also getting confidence of project.

SRS document can also call as:

FRS: Functional requirement specification document

CRS: Customer or client requirement specification document

URS: user requirement specification document

BDD: Business development design document

BD: Business document

BRS: Business Requirement Specification document

2. Analysis phase:

            Task:

i)                   Feasibility study

ii)                 Tentative planning

iii)               Technology selection

iv)               Requirement Analysis

Feasibility Study: Feasibility Study I a detailed study of the requirements document in order to check whether they are possible or not

Tentative planning: Both the resource as well as the time is temporarily planned clearly mentioned here in this section.

Technology selection: List of all technologies that are required to accomplish this project successfully is listed out in this section.

Requirement Analysis: Lists of all the requirements like human resources hardware and software that are remained to accomplish this project successfully are listed out here in this section.

3.     Design Phase:

Chief Architecture will develop HLD and LLD documents.

HLD (High Level Design) : In this CA will divide the whole project into modules by drawing some diagrams using UML

LLD (Low Level Design): The CA will divide each module into sub modules by drawing some diagrams using UML

4.     Coding Phase:

Task: Programming or developing

The developers will develop the actual source code by using coding standards

5.     Testing Phase:

Task: improving the quality of a software

In this phase tester will testing the application exe and improve the quality of software by using STLC.

6.     Release Phase:

Task: Releasing developed software to customer.

Project Manager, some developers and some testers are involving to release software to customer during this phase they will prepare Software Release Notes document

This document describes about installation process of application, what functionality are developed and so on…….

7.     Maintenance:

During this phase company concentrates on customer modifications or new requirements to be developed.

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