How to make validation in Bean and select value from another table

Question

I want to know how to select data from table in backing bean according to primary key i have
the problem is that
i have a table Employee_Salary contains Employee ids and their salary
Empoloyee_Salary table
     Employee_ID      Number
     Employee_salary Number
And Another table Called Employees
Employees table
     Employee_ID     Number
     IsManager Varchar2 its value is [*Yes or NO*]
and other columns that i don't care about this table
i have on a jsff page an <af:table> this table is editable this is the Empoloyee_Salary table
*i want to check before save or after insert if this employee is Manager [from Employees tabke(yes or no)] the salary*
cannot be less that 100
i want to know how to make this how to select the value from employees table according to the id i have in the employee_salary table how to make this and make this validation
i have to select IsManager from Employees Table to see if this manager or no
i want to know how to make this in a bean
i use jdeveloper 11g
and my project is ADF Fusion project
and the page that have the Emplpyee_Salary table is JSFF
thanks in advance

Answer 1

You might want to write this code in a validator on the entity object if it should apply from every screen.
If you want to access view objects from a backing bean the basics are here: http://download.oracle.com/docs/cd/E15523_01/web.1111/b31974/bcservices.htm#sthref918