Abstract
In his seminal paper on the relational data model, E.F. Codd formulated a number of design principles for a relational database (Codd, 1970). These principles were expressed in terms of three normal forms. The process of transforming a database design through these three normal forms is known as normalisation. By the mid-1970s third normal form was shown to have certain inadequacies and a stronger normal form, known as Boyce-Codd normal form was introduced (Codd, 1974). Subsequently, Fagin introduced fourth normal form and fifth normal form (Fagin 1977, 1979).
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Bibliography
Beynon-Davies P. (1996). Database Systems. Macmillan Press, Basingstoke.
Codd E.F. (1970). ‘A Relational Model for Large Shared Data Banks’. CACM. 13 (1). 377–387.
Codd E.F. (1974). ‘Recent Investigations into Relational Database Systems’. Proc. IFIP Congress.
Fagin R. (1977). ‘Multi-Valued Dependencies and a New Normal Form for Relational Databases’. ACM Trans. on Database Systems. 2(1).
Fagin R. (1979). ‘Normal Forms and Relational Database Operators’. ACM SIGMOD Int. Symposium on the Management of Data. 153–160.
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© 1998 P. Beynon-Davies
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Beynon-Davies, P. (1998). Normalisation. In: Information Systems Development. Macmillan Computer Science Series. Palgrave, London. https://doi.org/10.1007/978-1-349-14931-5_15
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DOI: https://doi.org/10.1007/978-1-349-14931-5_15
Publisher Name: Palgrave, London
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