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Posts: 103
2 months ago
Explain the essence of normalization that is implemented using normal forms.
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Database Processing: Fundamentals, Design, and Implementation
Edition: 15th
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Posts: 136
2 months ago
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The essence of normalization is to create relations that contain data on a single theme, and for each row in a relation to contain all the data about that theme for a given entity. This essence is implemented in the normal forms by taking a relation that contains data on more than one theme and splitting it into multiple relations that each contains data on a single theme. The different normal forms protect against the occurrence of modification anomalies. In practice, making sure all relations are in Boyce-Codd Normal Form (BCNF), or in Fourth Normal Form (4NF) if multivalued dependencies are found, insures high reliability of the database.
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