DIT203  SYSTEMS ANALYSIS AND DESIGN.

UNIVERSITY EXAMINATIONS: 2016/2017
EXAMINATION FOR THE DIPLOMA IN INFORMATION
TECHNOLOGY
DIT203 SYSTEMS ANALYSIS AND DESIGN
DATE: AUGUST, 2017 TIME: 2 HOURS
INSTRUCTIONS: Answer Question One & ANY OTHER TWO questions.

QUESTION ONE [30 MARKS] – COMPULSORY
a) For one to create an entity relationship diagram, there are best practice to be followed.
State and explain any five (10 Marks)
b) Describe any four characteristics of a general system.
(8 Marks)
c) What is the importance of the skills that a system analyst possess?
[6 Marks]
d) Explain why you think the use of CASE Tools may lead to high quality system
documentation (6 Marks)
QUESTION TWO [20 MARKS]
a) For a student to be admitted to KCA University there are several processes that he or
she must follow. The student must have applied for a course he is going to undertake
and received an admission letter containing some forms which the student is supposed
to fill. On the day of admission, the student is supposed to come with the admission
letter and the filled forms, the forms include an acceptance letter, details letter, parents
or guardian details, residence details and medical report. The student is also required to
come with his original result slip or certificates and identification documents. The
student normally starts his admission process at the school he has been called. The
administrator of that school will be responsible of the verification of all the documents
and admit the student in to the university.
Using a data flow diagram, demonstrate the above admission process.
(10 Marks)
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b) Explain advantages of prototyping as a system implementation methodology.
(5 Marks)
c) Describe the steps followed in a waterfall model. (5 Marks)
QUESTION THREE [20 MARKS]
a) Describe FOUR different ways in which the changeover to a new system can take
place. Highlight the advantages of EACH. (8 Marks)
b) Explain any four method of collecting data during system analysis that you will make
use of when involved in a system analysis process clearly stating their advantages and
disadvantages.
(8 Marks)
c) Define the following terms as used in Entity relationship diagrams (4 Marks)
i) Relationships
ii) Cardinality
QUESTION FOUR [20 MARKS]
a) What are the advantages of using structured methodology in relation to traditional
approaches? (8 Marks)
b) Outline the category of end user tests that may be adopted before the full release of a
computerized information system. (6 Marks)
c) State and Explain FOUR information systems components (8 Marks)
QUESTION FIVE [20 MARKS]
a) Clearly define the different activities that are carried out in the system analysis and
design process (8 Marks)
b) What is the difference between output and input as used in system analysis and design?
(4 Marks)
c) Differentiate between cybernetic systems and deterministic systems (4 Marks)
d) Why is it important for documentation when implementing a new system?
(4 Marks)

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