|
During the requirements determination phase,data is collected from
users through different data collection techniques.This information
is documented,and the requirements specification forms an important
piece of documentation for the subsequent phases of development.
(a)(i)Name two data collection techniques.[2 marks ]
(ii)Explain when each data collection technique named in part (i),should
be
used.[2 marks ]
(i)One mark should be awarded
for each technique named (up to a maximum of two marks). Examples
include the following:
• Interview.
• Questionnaire.
• Documents review.
Other valid answers should also receive credit.
[2 marks ]
(ii)One mark should be awarded for each scenario named (up to a maximum
of two marks). Examples include the following:
• Interview:where small numbers are involved and qualitative
information is
to be collected.
• Questionnaire:where the target population is large and quantitative
information is crucial.
• Documents eview:eviewing an organisation ’s records and
reports as a means to have an insight into the organisation ’s
operation.
Other valid answers should also receive credit.
[2 marks ]
(b)Decision trees are one of the tools that can be used for documenting
business processes.List two other tools which can be used to define
requirements specifications.[2 marks ]
One
mark should be awarded for each tool named (up to a maximum of two
marks).
Examples include the following:
• Decision tables.
• Structured English.
Other valid answers should also receive credit.
[2 marks ]
(c)Translate the following pseudo-code into a decision tree.
If Credit Limit is exceeded
If Payment History = Good
If Purchase > 200
Refuse credit
Else
Refer to manager
Endif
Else
Refuse Credit
Endif
Else
Allow Credit
Endif
[9 marks ]
Marks should be awarded as indicated
below:
[9 marks ]
|