-Logical Data Independence: The capacity to change the conceptual schema without having to change the external schemas and their application programs.
-Physical Data Independence: The capacity to change the internal schema without having to change the conceptual schema.
jim items answered the question on March 12, 2019 at 08:39
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Discuss the types of database states and database schema as studied in computer applications.
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Discuss the types of database states and database schema as studied in computer applications.
Date posted:
March 11, 2019
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Answers (1)
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Discuss the advantages and disadvantages of computer Network data models.
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Discuss the advantages and disadvantages of computer Network data models.
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March 11, 2019
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Discuss advantages and disadvantages of Hierarchical computer data models.
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March 11, 2019
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Discuss conditions under which one should not use a Database management system (DBMS).
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March 11, 2019
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Write a C program that prompts a user to enter radius of a circle and calculate the Area.
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March 6, 2019
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Explain the following input/output terms as used in computer systems. Give an example. (i) Read (ii) Write
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Explain the following input/output terms as used in computer systems. Give an example
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Date posted:
February 23, 2019
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Explain three functions of an information system in an organisation.
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January 20, 2019
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Explain ways in which computers can be used in the transport industry.
Date posted:
January 20, 2019
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(Solved)
A school has been advised to employ a database administrator. State responsibilities of this personnel in the school.
Date posted:
January 20, 2019
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Answers (1)
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A computer laboratory experiences power supply problems. Describe three power related problems that should be addressed.
Date posted:
January 20, 2019
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Arnold a programmer intends to create a user input interface screen for a system. State factors that he should consider.
(Solved)
Arnold a programmer intends to create a user input interface screen for a system. State factors that he should consider.
Date posted:
January 20, 2019
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Describe three arithmetic errors that may occur during computerized data processing.
Date posted:
January 20, 2019
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(Solved)
Identify tasks that can be achieved using a Desktop Publishing programme from the following list of tasks.
Date posted:
January 20, 2019
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State ways through which a computer user can minimise Repetitive Strain Injuries (RSI)associated with the use of a computer.
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State ways through which a computer user can minimise Repetitive Strain Injuries (RSI)associated with the use of a computer.
Date posted:
January 20, 2019
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State ways in which one can create a password which cannot be easily accessed by hackers.
Date posted:
January 20, 2019
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A school intends to install wireless media in their communication system. State three advantages of this model
Date posted:
January 20, 2019
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Explain problems associated with the computer hard disk.
Date posted:
January 20, 2019
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Explain the term proofreading as used in word processing. (2 marks)
Date posted:
January 20, 2019
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(Solved)
A computer technician has observed a lot of dust on computers in the computer laboratory.
Date posted:
January 20, 2019
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Answers (1)
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Describe each of the following computer cables:(a) Parallel cable; (b) Serial cable;
(Solved)
Describe each of the following computer cables:
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Date posted:
January 20, 2019
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Answers (1)