A file is a collection of related records. Example, a student file might include all of the records of students enrolled at a school. A record is the collection of fields that relate to a single entity. Example, we could have a student record that includes fields for the student's name, address, homeroom, date of birth, etc. A field is an item of stored data. A field could be a name, a date, an address, etc.
wanjiri answered the question on March 4, 2018 at 06:34
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A system analyst in the development of computerized information systems is defined as an agent of change.Required: (a) Define the term 'agent of change‘ and describe...
(Solved)
A system analyst in the development of computerized information systems is defined as an 'agent of change'.
Required:
a) Define the term =agent of change‘ and describe four roles of a system analyst in the
development of computerized information systems.
b) Outline five advantages of an external system analyst in the development of
computerized information systems.
Date posted:
February 15, 2018
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Answers (1)
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State rules of naming variables in C++. How do they differ from ANSI C rules?
(Solved)
State rules of naming variables in C++. How do they differ from ANSI C rules?
Date posted:
February 9, 2018
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Answers (1)
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Describe the limitations of using getchar and scanf functions for reading strings.
(Solved)
Describe the limitations of using getchar and scanf functions for reading strings.
Date posted:
February 8, 2018
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Answers (1)
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What is a dynamic memory allocation? How does it help in building complex programs?
(Solved)
What is a dynamic memory allocation? How does it help in building complex programs?
Date posted:
February 8, 2018
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Answers (1)
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Outline the characteristics of a system
(Solved)
Outline the characteristics of a system
Date posted:
January 24, 2018
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Answers (1)
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Differentiate between the following layout managers
i. GridLayout
ii. BorderLayout
iii. FlowLayout
(Solved)
Differentiate between the following layout managers
i. GridLayout
ii. BorderLayout
iii. FlowLayout
Date posted:
January 24, 2018
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Answers (1)
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Identify and discuss five aspects of human intelligence that could be used to characterize intelligent knowledge based systems.
(Solved)
Identify and discuss five aspects of human intelligence that could be used to characterize intelligent knowledge based systems.
Date posted:
January 9, 2018
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Answers (1)
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What are the major limitations of manual systems?
(Solved)
What are the major limitations of manual systems?
Date posted:
December 17, 2017
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Answers (1)
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Write down the factors to consider when choosing a software of a computer system.
(Solved)
Write down the factors to consider when choosing a software of a computer system.
Date posted:
December 14, 2017
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Answers (1)
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Define a system and mention any four types of systems that exist today
(Solved)
Define a system and mention any four types of systems that exist today.
Date posted:
December 5, 2017
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Answers (1)
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List four application packages that you might consider using on a micro-computer for administrative functions in an organisation. Explain how each of these packages can...
(Solved)
List four application packages that you might consider using on a micro-computer for administrative functions in an organisation. Explain how each of these packages can increase an organisation's efficiency.
Date posted:
December 3, 2017
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Answers (1)
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Why is active participation of senior management in design of information systems important?
(Solved)
Why is active participation of senior management in design of information systems important?
Date posted:
November 30, 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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Name four types of accounting information systems which DSS may address
(Solved)
Name four types of accounting information systems which DSS may address.
Date posted:
November 27, 2017
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Answers (1)
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During output design, the designer‘s ideas are put to test. Some ideas are essential while others are dictated by circumstances. Required:(i) State the general principles applied...
(Solved)
During output design, the designer's ideas are put to test. Some ideas are essential while others are dictated by circumstances.
Required:
(i) State the general principles applied in output design.
(ii) Outline the ?Steps taken in designing an output.
Date posted:
November 27, 2017
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Answers (1)
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Discuss the changes that would take place if the expert system was implemented in terms of position, status; tasks and responsibilities of engineers at the...
(Solved)
Discuss the changes that would take place if the expert system was implemented in
terms of position, status; tasks and responsibilities of engineers at the company‘s
repair centre and in the field.
Date posted:
November 27, 2017
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Answers (1)
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The term computer describes a device made up of a combination of electronic and electro-mechanical components. By itself, a computer has no intelligence and is...
(Solved)
The term computer describes a device made up of a combination of electronic and electro-mechanical components. By itself, a computer has no intelligence and is referred to as hardware which means simply the physical equipment. Tile hardware cannot be used, until it is connected to other elements,
all of which constitute the six parts-of a computer-based information system.
Required:
Describe the six components of a computer-based information system.
Date posted:
November 27, 2017
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Answers (1)
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In a file set up or development process, the file‘s structure is defined and its contents identified. The four characteristics considered in defining the structure...
(Solved)
In a file set up or development process, the file‘s structure is defined and its contents identified. The four characteristics considered in defining the structure and identifying the contents in a file set up or development process are; volatility, activity, size and growth.
Required:
(i) Using the example of a payroll file, explain the terms; volatility, activity, size and growth.
(ii) Explain how each of the characteristics in (i) above may influence decisions to do with a file structure design and in planning whether the mode of access should be sequential, indexed sequential or random.
Date posted:
November 27, 2017
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Answers (1)
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Witu Ltd., a motor vehicle spare parts dealer, has its head office in Nairobi. The company has eight branches in Kenya, two in Uganda and...
(Solved)
Witu Ltd., a motor vehicle spare parts dealer, has its head office in Nairobi. The company has eight branches in Kenya, two in Uganda and one in Rwanda. To enable the branches share data and other resources, the company has a large database that is replicated in the computers located in the branches. These computers are interconnected through data communication networks. The database is centrally administered from Nairobi but the branches have flexibility and may customize the database to meet their needs.
(i)State and briefly explain advantages and disadvantages of the database used by
Witu Ltd.
(ii)Explain the business reasons that may have encouraged Witu Ltd. to use this
database.
Date posted:
November 27, 2017
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Answers (1)
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Explain how the following systems development tools or techniques can assist a systems developer to reduce an application‘s development period and costs.(i) Fourth generation languages (4GLs)....
(Solved)
Explain how the following systems development tools or techniques can assist a
systems developer to reduce an application‘s development period and costs.
(i) Fourth generation languages (4GLs).
(ii) Prototyping
(iii) Computer aided software engineering (CASE) tools.
Date posted:
November 27, 2017
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Answers (1)