Removing the ", insertable=false, updatable=false" from the owner causes
the insert person query to fail:
company = new Company();
company.setOwner("USA");
company.setComp_id("2000034");
company.setC_name("Spacely Sprockets");
em.persist(company);
Person person = new Person();
person.setOwner("USA");
person.setPersonid("20000A2");
person.setP_fname("George");
person.setP_sname("Jetson");
person.setCompany(company);
em.persist(person);