Integraton of TWO Applications using Visual Basic & Power Builder. What steps need to be taken to apply SOA (Service Orietned Architecture) to solve the integraton problem An Employee Administration Service to manage hiring, changes in status and Termination (VB) A Salary and Review Administration Service to manage salaries and employee performance (PB) or

First break the employee administration business case into set of processes like you rightly identified two areas (employee administration & employee salary review) break each into atomic services look at at communication betweeen services and add contracts for communication with policies or sla's in your case when ever salary review happens you can use a service hypothitically named as salary review service and associate set of actions like linking etc...