Strategies for Converting

To а New Computer System

Write а paragraph describing each of these strategies for converting to а new computer system. Explain what its advantages and disadvantages are. The first strategy is described for you as an example.

1. Direct implementation:

Direct implementation means that the user simply stops using the old system and starts using the new one. The advantage is that you dо not have to run two systems at the same time. The disadvantage of this approach is that if the new system does not operate properly, there is nothing to fall back on.

2. Parallel implementation: Run at the same time old system

3. Phased implementation: parts of the system are converted separately:

a) gradually;

b) in groups.

4. Pilot implementation: tried first in only one part of the company.

12.Find the answers to these questions in the following text:

1 What advantages of using object-oriented programming are mentioned in the text?

2 What are the three key features of OOP?

3 What multimedia data types are referred to in the text?

4 List the different types of triangle mentioned in the text.

5What feature avoids the problem of deciding how each separate type of data is integrated and synchronized into a working whole?

6 What specific type of rectangle is named in the text?

7 What common properties of a rectangle are mentioned in the text?

8 What features are made quicker by code reusability?