An exercise in utilizing JPA and Hibernate for Object-Relational Mapping
Modify the annotations on the class hibernate_exercise_one.entities.Employee to make all of the jUnit tests past in the class hibernate_exercise_one.BasicAnnotatonTests.
http://docs.oracle.com/javaee/7/tutorial/bean-validation001.htm
http://www.oracle.com/technetwork/middleware/ias/toplink-jpa-annotations-096251.html
https://docs.jboss.org/hibernate/stable/annotations/reference/en/html/entity.html#entity-hibspec