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What is normalization and types of normalization?
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Answer Posted / r.arjunarao
Normalization means reduces redundancy unnecessary
repetition of data is NF
UnNormalization means intentional introduction redundancy to
a table to improve the performance is De-NF or Un-NF
1NF Any multiple values Attribute have been removed.
2NF Any partial functionality dependency have been removed.
3NF Any transitive functionality dependency have been removed.
4NF Any multi-values dependency have been removed.
5NF Any remaing anomalies have been removed.
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