목차 객체의 상속관계 extends로 지원해준다. @Entity public class Item { @Id @GeneratedValue @Column(name = "item_id") private Long id; private String name; private int price; private int stockQuantity; } @Entity public class Album extends Item{ private String artist; } @Entity public class Movie extends Item{ private String director; private String actor; } @Entity public class Book extends Item{ private String..
