Computer Studies Made Simple : System Development Life Cycle / SDLC

System Development Life Cycle / SDLC :

This refers to a series of steps taken in order to develop a system.

The following series of steps are taken:

1.Preliminary Investigation:

This is the first phase in SDLC in which initial analysis of a system is performed.

The following aspects are analysed:

System identification

System Scope

Alternative Solutions

Feasibility Study

Preliminary Plan

2.System Analysis:

A detailed analysis and study of current system is undertaken to investigate the working of a system and 

ways of making improvements.

It includes the following aspects:

Need Analysis

Data Gathering

Data Analysis

Analysis Report

3.System Design:

In this stage,logical and physical model of a new system is designed.

This design is made keeping in mind to fulfil criteria devised in Analysis Phase

4.Coding Phase:

Actual development of the System takes place in this stage.

Different modules and programmes are designed.These modules are then intergrated at a later stage.

5.Testing:

In this phase,the system is thoroughly tested in order to identify and errors.

6.Implementation:

In this stage,hardware,software and other files are installed in the system after testing has been completed.

It canbe done in one of the methods below:

Parallel Implementation

Phased Implementation

Pilot Implementation

Direct Implementation

7.Maintenance:

In this phase,a system is monitored and steps aretaken to ensure that a system is fulfilling its objectives.

It includes the following meausures/steps:

Taking steps to update and improve effectiveness of a system.

Identifying and rectifying any problems identified in the system.