Records are stored randomly but accessed directly. A record key is issued to determine where the record is stored on storage media e.g. in magnetic and optical disks.
Advantages
Records are quickly accessed
File update is easily achieved
Disadvantages
Data may be accidentally erased or overwritten unless precaution taken
Expensive hardware and software resources are required
Relative complexity of programming
System design around is complex and costly
Kavungya answered the question on April 16, 2019 at 10:03
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Explain exhaustively the importance of computers in the following areas:
(Solved)
Explain exhaustively the importance of computers in the following areas:
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Date posted:
April 16, 2019
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Answers (1)
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Name any FOUR classes of computers based on size and complexity.
Date posted:
April 16, 2019
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Answers (1)
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State three methods of classifying computers. In each case, list the different types of computers.
Date posted:
April 16, 2019
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Answers (1)
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Give the reasons which make microcomputers popular.
Date posted:
April 16, 2019
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Answers (1)
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Calculate 11100111 + 00101110
Date posted:
April 16, 2019
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Briefly explain seven factors that can be used to determine the type of a computer.
Date posted:
April 16, 2019
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Convert 20.216 to decimal.
Date posted:
April 16, 2019
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Match the following generations of computers with the technology used to develop them.
Date posted:
April 16, 2019
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Answers (1)
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(Solved)
What was the most remarkable discovery during the second computer generation?
Date posted:
April 16, 2019
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Answers (1)
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Compare computer memory sizes during the Five computer generation periods.
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Compare computer memory sizes during the Five computer generation periods.
Date posted:
April 16, 2019
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Answers (1)
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Why is the screen also called a Monitor?
Date posted:
April 16, 2019
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Answers (1)
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(Solved)
Name and explain the two main divisions of computer storage.
Date posted:
April 16, 2019
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Answers (1)
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Clearly draw and label the main physical parts of a simple computer system.
(Solved)
Clearly draw and label the main physical parts of a simple computer system.
Date posted:
April 16, 2019
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Answers (1)
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(Solved)
State three features of the System unit.
Date posted:
April 16, 2019
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Answers (1)
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(Solved)
Differentiate between a microcomputer and a personal computer.
Date posted:
April 16, 2019
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Answers (1)
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Which category of computers would you place an N- series Nokia phone?
Date posted:
April 16, 2019
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(Solved)
List FIVE advantages of a computerized system over a manual system.
Date posted:
April 16, 2019
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Answers (1)
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(Solved)
Give two differences between tower – style and desktop system units.
Date posted:
April 16, 2019
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Answers (1)
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(Solved)
Why is a computer referred to as an electronic device?
Date posted:
April 16, 2019
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Answers (1)
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State three reasons why users may resist the introduction of information and
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(Solved)
State three reasons why users may resist the introduction of information and
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Date posted:
April 16, 2019
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Answers (1)