Economy
A good system must be economical or cost effective meaning that tangible and intangible
benefits derived should overweigh all the costs involved in the development.
2. Efficiency
It will be in the interest of the user to develop a system which is fast enough so as to
accommodate changes in the real time environment
3. Flexibility
A good system must be expandable or flexible so that user requirement can be incorporated
from time to time.
4. User oriented
The system is designed for the user but not user for the system thus it must be user specific
so that it is acceptable to them.
5. Reliability
A good system should help users develop confidence through reliability this means cases of
breakdown or abnormality should be reduced.
6. High level integrity
A good system should safeguard the user confidentiality or the privacy of information under
processing.
gregorymasila answered the question on November 30, 2017 at 12:00
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Explain the meaning of the following terms, bringing out clearly the distinction between the terms in each pair (i) Unit testing and systems testing
(Solved)
Explain the meaning of the following terms, bringing out clearly the distinction between the
terms in each pair.
i) Unit testing and systems testing.
ii) Preventive and perfective maintenance.
iii) Co-processing and parallel processing.
iv) Logical and physical design of a system.
Date posted:
November 30, 2017
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Answers (1)
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Write short descriptive notes on the following: (a) Electronic Data Interchange (b) Client/server computing (c) System specification (d) Electronic point of sale system...
(Solved)
Write short descriptive notes on the following:
a) Electronic Data Interchange
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c) System specification
d) Electronic point of sale system
Date posted:
November 30, 2017
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Answers (1)
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Systems walkthroughs are procedures that are commonly used as a means of quality assurance in the information systems development process.Required: (i) Describe the composition and the...
(Solved)
Systems walkthroughs are procedures that are commonly used as a means of quality
assurance in the information systems development process.
Required:
i) Describe the composition and the roles of walk through teams.
ii) Provide a checklist of items to be examined during the walkthrough.
Date posted:
November 30, 2017
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Answers (1)
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Explain what is meant by a Graphical User Interface (GUI) and account for the increased design and implementation of such interfaces
(Solved)
Explain what is meant by a Graphical User Interface (GUI) and account for the increased design and implementation of such interfaces.
Date posted:
November 30, 2017
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Answers (1)
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Client/Server architecture, database technology and networks provide structures which facilitate sharing of corporate data and information.As an information Technology (IT) specialist, outline the major precautions...
(Solved)
Client/Server architecture, database technology and networks provide structures which
facilitate sharing of corporate data and information.
As an information Technology (IT) specialist, outline the major precautions that should be
taken into account in the process of sharing data.
Date posted:
November 30, 2017
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Answers (1)
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Describe the relevance of the following to a Decision Support System (DSS):(i) Specialized packages: (ii) Query languages; (iii) Database management system
(Solved)
Describe the relevance of the following to a Decision Support System (DSS):
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(ii) Query languages;
(iii) Database management system
Date posted:
November 30, 2017
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Answers (1)
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Management Information Systems should facilitate decision-making at all levels of management. Each level requires information with different characteristics and with differing degree of profitability.
(Solved)
Management Information Systems should facilitate decision-making at all levels of management.
Each level requires information with different characteristics and with differing degree of
profitability.
Required:
a) Examine the characteristics of information used in (i) strategic planning and (ii) operational
control.
Date posted:
November 30, 2017
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Answers (1)
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Business process re-engineering (BPR) is the fundamental rethinking and radical redesign of business process to achieve a dramatic improvement in measures of performance such as...
(Solved)
Business process re-engineering (BPR) is the fundamental rethinking and radical redesign of
business process to achieve a dramatic improvement in measures of performance such as
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Required:
i) List the steps of BPR.
ii) Critically examine the role information technology (IT) plays in BPR
Date posted:
November 30, 2017
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Answers (1)
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The general manager of a large organisation has asked you to draw up a document identifying eight important system characteristics against which managers can evaluate...
(Solved)
The general manager of a large organisation has asked you to draw up a document
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Date posted:
November 30, 2017
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Answers (1)
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Selling of products, services and information via the computer networks including the internet.Required: (a) Brief explanation of the following concepts as relates to e-commerce: (i) Electronic market....
(Solved)
Selling of products, services and information via the computer networks including the internet.
Required:
a) Brief explanation of the following concepts as relates to e-commerce:
i) Electronic market.
ii) Electronic purse.
iii) Cyber banking.
iv) Cyber mall.
Date posted:
November 30, 2017
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Answers (1)
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Most systems are obsolescent the day they become operational. Comment on this statement giving six key reasons why changes to a system are so often...
(Solved)
Most systems are obsolescent the day they become operational. Comment on this statement giving six key reasons why changes to a system are so often necessary after it has been implemented.
Date posted:
November 29, 2017
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Answers (1)
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Describe the functional characteristics and applicability of the backing store
(Solved)
Describe the functional characteristics and applicability of the backing store.
Date posted:
November 29, 2017
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Answers (1)
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Give and explain two reasons, in each circumstance why the boot-up programs are stored. (i) In ROM (ii) On Disk
(Solved)
Give and explain two reasons, in each circumstance why the boot-up programs are stored.
i) In ROM
ii) On Disk
Date posted:
November 29, 2017
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Answers (1)
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Access control is the restriction of unauthorized access to a portion of a computer system or the entire system.Required: (a) Explain the following control techniques and...
(Solved)
Access control is the restriction of unauthorised access to a portion of a computer system or the
entire system.
Required:
a) Explain the following control techniques and their significance in the context of data security.
i) Biometric control
ii) Encryption
iii) Logical access
Date posted:
November 29, 2017
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Answers (1)
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Application controls can be classified into three major categories, processing controls and output controls. Describe the objective of each control and examine the techniques within...
(Solved)
Application controls can be classified into three major categories, processing controls and
output controls.
Describe the objective of each control and examine the techniques within each to ensure
maintenance of maximum feasible levels of control.
Date posted:
November 29, 2017
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Answers (1)
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Explain how the use of Information Technology (IT) can bring about improvements in productivity within a business organisation
(Solved)
Explain how the use of Information Technology (IT) can bring about improvements in productivity within a business organisation.
Date posted:
November 29, 2017
.
Answers (1)
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Prototyping is based on the simple idea that people can express more easily what they like or do not like about an actual working system
(Solved)
Prototyping is based on the simple idea that people can express more easily what they like or
do not like about an actual working system.
Required:
(a)
(i) Examine four guidelines required for the development of a prototype.
(ii) Select two facilities usually found in fourth generation languages (4GLs) and explain their
application in developing a prototype system.
Date posted:
November 29, 2017
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Answers (1)
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Organisation information systems are categorised under: (i) Transaction Processing System (TPS)
(Solved)
Organisation information systems are categorised under:
i) Transaction Processing System (TPS)
ii) Management Information Systems (MIS)
iii) Decision Support System (DSS)
iv) Executive Information System (EIS)
v) Expert Systems (ES)
Required:
Suggest one application of each of the systems types listed above for each of the following
functional areas of business:
- Sales and marketing
- Finance
Date posted:
November 29, 2017
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Answers (1)
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What impact might end-user computing have on the organisation of information technology functions?
(Solved)
What impact might end-user computing have on the organisation of information technology functions?
Date posted:
November 29, 2017
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Answers (1)
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Suggest examples of activities end-users might not be responsible for.
(Solved)
Suggest examples of activities end-users might not be responsible for.
Date posted:
November 29, 2017
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Answers (1)