This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
In a relationship, there is an owning side, here what you wanted is Employee as the owing side.
with your earlier configuration PersonalDetails became the owing side as the PersonalDetails 'eno' was assigned to an employee which shouldn't have been the case.
reversing that made Employee the owing side. Hope this helps.