T3

Question 1

4 types of changeover

Answer 1

Parallel, Direct, Phased and Pilot

Question 2

Parallel

Answer 2

The old system and the new system will operate side by side for a short period of time.

Question 3

Direct

Answer 3

Involes discontinuing the old system and immediately replacing it with the new system. Their is no overlap between the two systems.

Question 4

Phased

Answer 4

Some parts of the old system will be replaced by the new system while the remainder continues to operate using the old system.

Question 5

Pilot

Answer 5

Liked phased implementation, but only some data from the old system is processed by the new system. The new system will operate alongside the old system but only process part of the data.

Question 6

User Documentation.

Answer 6

Provides the user with all the information they need to support them with using new piece of
hardware or software. It uses ‘non-technical’ language for anybody to read. It may be
provided in a variety of different formats e.g. online or in a booklet.

Question 7

Components of User Documentation

Answer 7

Instructions on how to enter and exit the new system.
- Detailed instructions (with screenshots) on how to use the main features of the system.
- Instructions will incorporate explanations on any error messages provided by the
system.
- A trouble shooting section with details on how to resolve common errors.

Question 8

Technical Documentation

Answer 8

Describes how the system works rather than what it does and if written for professionals who
involved in the design and implements of the system.

Question 9

Data Conversion

Answer 9

Data is taken from the existing system and converted into a sutible format and non electronic data may need converted and file formats may need changed.

Question 10

Purpose of System Maintenance

Answer 10

System maintenance forms an important part of the development process. It ensures that the
system continues to run smoothly following implementation. Maintenance is carried out
regularly to ensure the system meets the requirements.

Question 11

Corrective Maintenance

Answer 11

Errors may not be identifies until the system has been in use. These errors must be
debugged, and the system is retested.

Question 12

Adaptive Maintenance

Answer 12

Modification of a software product is preformed after delivery in
response to changes in the environment which the software must meet the changing user
requirements.

Question 13

Perfective Maintenance.

Answer 13

Any amendment made to a software product, following initial
delivery to help improve performance of the software. The devolved can take the opportunity
to upgrade code, making it more efficient