Thanks Thomas for your Reply .
Now I have used MyPackage::AT_EMPLOYEE . But still the UI5 Application is not displaying the columns of second table in the attribute view.
Attribute view consist of 2 tables Employee Table and Address Table both from EPM Model.
I also checked the Service but it is only displaying the columns of Employee table
http://dewdftzld018u.pgdev.sap.corp:8001/XSJS_UI/Table.xsodata/Employee_table?$top=4&$format=json
Thanks,
Nikhil Arya.