public void removeRequiredCourseFromDegree(int degreeId, int courseId) {
		if(!isValidId(degreeId) || !isValidId(courseId)) {
			return;
		}
		
		Course course = courseDao.getCourse(courseId);
		Degree degree = degreeDao.getDegree(degreeId);
		
		if(course != null && degree != null) {
			degree.getRequiredCourses().remove(course);
			degreeDao.saveDegree(degree);
		}
	}