Question

Question 4: System Implementation

What are the four options for implementing an IS? Briefly explain each option.

Answer 1

The four options for implementing an IS is as follows:

1.) PARALLEL

When we are using the new system as well as the old systems at the same time it is known as parallel.

Advantages:

1. we can compare the outputs of the new system to that of the old system.

Disadvantages:

1. Time-consuming since we need to enter data to different systems.

2.) PHASED

When small parts of the new system replace the parts of the old systems over time, then it is called phased.

Advantage:

1. Any failure wouldn't have a large impact as it is only a small part.

Disadvantages:

1. Data loss if any part of the new system fails.

3.) PILOT

When a small group of users first uses a new system prior to its use by everyone, the system is said to be piloted.

Advantages:

1. Failures can be identified without causing any major impact on the organization.

Disadvantages:

1. Scale issue can arise which means the system might work for 10 people but not for 1000.

4.) DIRECT

When we directly implement the new system and retire the old system, it is called direct implementation.

Advantages:

1. Good for not so critical systems.

Disadvantages:

1. If you have any doubts about the working of the system, then this approach is not useful.

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