It is a process to reduce the redundancy in data by breaking the table in to small parts ex:NORMAL emp table here the department and salary of the emp are repeating in order to reduce fig 2: em id em name DEPARTMENT sALARY 1 NARESH A 2000 2 NAZEER B 3000 3 VIVEK A 2000 4 VASU B 3000 fig2: here in this one colomn is reduced since it has repeated data;this is meant by normalization; em id em name DEPARTMENT 1 NARESH A 2 NAZEER B 3 VIVEK A 4 VASU B one more table is created Department Salary A 2000 B 3000