Hi There,
Iam new to Hibernate , i have 3 tables which is pointing to a single master table .when i enter data to one child table null records is getting created to other child tables, hope the explanation below will help all of you to understand the problem.

EDUORG - > STUDENT
- > TEACHING STAFF
-> NON-TEACHING STAFF
EDUORG is the master table which holds some common data among all the three child tables and refers with three different tables for different datas.

When i enter data for Student table , the data for teaching-staff ,non-teaching staff table is getting inserted with Null Values. Please help me to fix this .

Thanks in Advance.