Normalization is the process which is used to remove redundancy from tables. 1normal form- In first normal form attribute value should be atomic. i.e. value which we cant further divided. 2NF- In 2NF. It should be in 1NF and every non prime attributes are fully functionally depended on prime attributes. 3NF- Firstly it should be in 2 NF. and there is no transitivity i.e. a->b, b->c then a->c will not present in table. Others are 4NF,5NF
Normalization is a systematic way of ensuring that a database structure is suitable for general-purpose querying and free of certain undesirable characteristics insertion, update and deletion anomalies that could lead to a loss of data integrity.
Normalization is the process of organizing the data to remove the anomilies (an unusual occurance of duplicate or missing objects), in this procecss relations are decomposed with anomalies in order to produce smaller and well-structured relations.
1NF 2NF 3NF 4NF->BCNF PJNF (Project Join Normal Form) DKNF (Domain Key Normal Form)
by applying these we get the well structured database.
Normalization is the name given to the process of simplifying the relationship among data elements in a record. Normalization replaces a collection of data in a record structure by another record design which is simpler,more predictable and therefore more manageable. There are :-1NF,2NF,3NF,4NF,BCNF(Boyce codd Normal Form),5NF