wat is mean by normalization?......programing defination i
need...(i know basic defination)
Answer Posted / murtaza
normalization supports Atomicity which is one of d most impt
property in dbms.atomicity means there should be always one
record in a row.by this we can reduce the redundancy and
maintain consistency. as with this rule we go on normalizing
the tables depending upon the data dependency.
there r mainly 5 level of normalization
1.1NF(SUPPORTS ATOMICITY PROPERTY)
2.2NF(REDUCE REDUNDANCY)
3.3NF(FURTHER NORMALIZE D TABLES ACCORDING TO DATA DEPENDENCY)
4.BOYCE-CODD NF(SUPPORTS TRIVIAL DEPENDENCY)
5.5NF
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