Software Development Life Cycle

Question 1

What are the five stages of the system life cycle?

Answer 1

Analysis
Design
Implementation
Testing
Evaluation

Question 2

What methods are used to gather information about a system?

Answer 2

Interviews
Observation
Questionnaires
Examination of documents

Question 3

What are some of the reasons a new system may be made?

Answer 3

• Current systems may be out of date, difficult to learn or hard to use.
• New technology may be available for use.
• Current system may not be able to fit the companies changing need or may be inefficient.
• New opportunities may become available, such as expanding to the internet.
• Commercial reasons, e-commerce.
• Expansion to new platforms or operating systems.

Question 4

Why might a company decide not to get a new system?

Answer 4

Creating a new system is expensive and takes time. In some situations it makes more financial sense for a company to adapt around the system than to adapt the system around them.

Question 5

What makes a good design?

Answer 5

A good design should be detailed enough that a programmer has all the details they need to write the program exactly as the designer intended.

Question 6

During which stages of the system life cycle should testing take place?

Answer 6

Testing should take place during all stages of development and a testing phase should also be used to ensure that the program is ready to be published.

Question 7

What should be considered in the evaluation stage?

Answer 7

The new system should be reflected upon, some good questions to ask are:
Does it meet the original objectives and requirements?
How effective is the new system at solving the original problems?
Can users operate the system without making mistakes?

Question 8

Why is software maintenance important?

Answer 8

To remove any bugs and errors and to improve features.

End users will usually decide they need more features when using the program for the first time.