Why have the HR and training divisions built quite different database systems? What are the difficulties involved in integrating the functions of these divisions?

What are the advantages of integrating the functions of the HR division, training division, and those of the work group supervisors?

 What are the advantages and disadvantages of the Boomerang Water Corporation buying an off-the-shelf integrated HR database system?

In what ways may the transfer of some HR functions to work group supervisors improve the efficiency of the HR division? In what ways may work group supervisors be advantaged or disadvantaged by the transfer of HR functions?