Book book = new Book();
book.setAuthor("Margaret Mitchell");
book.setTitle("Gone wyth the wind");
// link the book with a new genre record
Genre genre = new Genre();
genre.setGenre("Clssic");
genre.setBook(book); // create book genre link
// add book and genre to the database
book = linkController.add(book);
genre = linkController.add(genre);
// update the title of the book to correct spelling error
book.setTitle("Gone with the wind");
book = linkController.update(book);
genre.setGenre("Classic");
genre = linkController.update(genre);
linkController.delete(genre); // delete dependent child genre data first
linkController.delete(book); // delete parent book record