Index: src/main/java/com/example/moviezone/model/Category.java
===================================================================
--- src/main/java/com/example/moviezone/model/Category.java	(revision 69dc56166014c34f15d010f9cd159cdeebe138ba)
+++ src/main/java/com/example/moviezone/model/Category.java	(revision 2c60cdad522fd4deabe079499d5044362a40c4d8)
@@ -17,5 +17,5 @@
     @Column(name = "id_category", nullable = false)
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long id_category;
+    Integer id_category;
     String name;
     Integer extra_amount;
Index: src/main/java/com/example/moviezone/model/Projection.java
===================================================================
--- src/main/java/com/example/moviezone/model/Projection.java	(revision 69dc56166014c34f15d010f9cd159cdeebe138ba)
+++ src/main/java/com/example/moviezone/model/Projection.java	(revision 2c60cdad522fd4deabe079499d5044362a40c4d8)
@@ -18,5 +18,5 @@
     @Column(name = "id_projection", nullable = false)
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long id_projection;
+    Integer id_projection;
 
     LocalDate date_time_start;
Index: src/main/java/com/example/moviezone/model/Projection_Room.java
===================================================================
--- src/main/java/com/example/moviezone/model/Projection_Room.java	(revision 69dc56166014c34f15d010f9cd159cdeebe138ba)
+++ src/main/java/com/example/moviezone/model/Projection_Room.java	(revision 2c60cdad522fd4deabe079499d5044362a40c4d8)
@@ -16,5 +16,5 @@
     @Column(name = "id_room", nullable = false)
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long id_room;
+    Integer id_room;
     Integer number_of_seats;
     Integer projection_room_number;