Implementation

Methods of implementation	Advantages	Disadvantage
Parallel Running	If the system didn’t work properly there is a backup system	It is a slow method of implementation
Direct Changeover	It is a quick method of implementation	There is no backup system
Phased Implementation	People can get used to the system	If the system didn’t work properly it is impossible to fall back to the old system
Pilot Running	If the system didn’t work properly, not all branches are affected	It is a slow method

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Evaluation

Documentation

Documentation is divided into two forms:

1. Technical documentation
2. User documentation

Technical documentation is produced specifically for the system analyst and the programmers. whether User documentation is provided to help the user with the new system.

Developing elements of technical documentation

Technical documentation consists of:

1. System documentation

It provides a detailed overview of the whole system

2. Program documentation

It is produced for those pieces of program code that have been written

Designing and developing elements of user documentation

User documentation is produced for several reasons, for example the user may not be familiar with the system so it will help him with various parts of the system until he becomes familiar. It is like tutorials.

It will include:

• Screenshots and descriptions on how he will use the software
• The purpose of the system
• The input and output format
• What to do when errors occurs
• A troubleshooting guide

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Development and testing