I have table with one primary key (auto increment) and three columns except that primary key column

S.No EmpId EmpName Month salary

1 1700 xxxx Jan 17000
2 1701 yyyy Jan 70000
3 1700 xxxx Feb 16750
4 1702 yyyy Jan 70000
5 1700 xxxx Mar 17000
6 1700 xxxx April 16000
This table contains details about employee names and his/her monthly salary details, I need to update the salary of employee xxx in Jan Month.

How can i do this in hibernate by using session.saveorupdate method?