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Part of the book series: Tutorial Guides in Computing and Information Systems ((TGCIS))

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Abstract

Every organization that uses a computer system to maintain its operational and management information does so using a collection of interrelated files called a database. Every file in a database consists of a template called a record template, which is used to create individual records of information. Each record contains a collection of predetermined fields into which the record’s information is entered. A simple equivalent to a computer file is a physical address book which contains the names, addresses and telephone numbers of your friends and acquaintances. Just as in a computer file, each record in the address book has the same format — one line for name, three lines for address, one line for post code and one line for telephone number.

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© 1995 Dexter J. Booth

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Booth, D.J. (1995). Relations. In: Foundation Discrete Mathematics for Computing. Tutorial Guides in Computing and Information Systems. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-7114-2_7

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  • DOI: https://doi.org/10.1007/978-1-4899-7114-2_7

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-0-412-56280-8

  • Online ISBN: 978-1-4899-7114-2

  • eBook Packages: Springer Book Archive

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