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Content Designator
Content designators are used to denote the identity of each data field (instead of identifying data fields by position) within a record. It may be grouped together at the beginning of the record with 'pointers' to the data they identify. The storage of the computer file invariably uses the method of indexing the location of the files at the beginning of the file. The computer calculates from the given starting character position of each file the likely position of that file on the tape/disk, moves the same very quickly to a position just before the start of that file at which point the tape / disk moves more slowly in order to locate the data. This index is known as a 'Directory'.
Functions of a Subject Authority File The functions of a subject authority file are discussed below: Cataloguing: The subject authority file serves as the source of ind
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Ecologically sustainable is defined as the maintenance of life support systems to achieve a healthy geophysiological continent, and the achievement of a natural extinction rate (Su
Analytical An analytical bibliography deals with the study and detailed description of documents. It examines the physical characteristics of documents, the history of the doc
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Uses of General Encyclopaedia General Encyclopaedia is usually referred to get background information on any subject. They are used to find out information about unknown sub
what is centralized cataloguing?
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In the twentieth century the United States developed what was perhaps the ?rst mass society, but the American cult of equality and individualism prevented Americans from analysing
Levels of Description Even though AACR-2 provides for the eight areas of description and for certain elements of information in each area, it is not necessary that every docu
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