diff --git a/backend/src/main/java/com/example/backend/core/repository/CommonRepository.java b/backend/src/main/java/com/example/backend/core/repository/CommonRepository.java
deleted file mode 100644
index e6cc515..0000000
--- a/backend/src/main/java/com/example/backend/core/repository/CommonRepository.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package com.example.backend.core.repository;
-
-import java.util.List;
-
-public interface CommonRepository<E, T> {
-
-    List<E> getAll();
-
-    E get(T id);
-
-    E create(E entity);
-
-    E update(E entity);
-
-    E delete(E entity);
-
-    void deleteAll();
-
-}
diff --git a/backend/src/main/java/com/example/backend/core/repository/MapRepository.java b/backend/src/main/java/com/example/backend/core/repository/MapRepository.java
deleted file mode 100644
index 5dea72e..0000000
--- a/backend/src/main/java/com/example/backend/core/repository/MapRepository.java
+++ /dev/null
@@ -1,65 +0,0 @@
-package com.example.backend.core.repository;
-
-import java.util.List;
-import java.util.Map;
-import java.util.TreeMap;
-
-import com.example.backend.core.model.BaseEntity;
-
-public abstract class MapRepository<E extends BaseEntity> implements CommonRepository<E, Integer> {
-
-    private final Map<Integer, E> entities = new TreeMap<>();
-    private Integer lastId = 0;
-
-    private boolean checkNull(E entity) {
-        if (get(entity.getId()) == null)
-            return false;
-        return true;
-    }
-
-    protected MapRepository() {
-
-    }
-
-    @Override
-    public List<E> getAll() {
-        return entities.values().stream().toList();
-    }
-
-    @Override
-    public E get(Integer id) {
-        return entities.get(id);
-    }
-
-    @Override
-    public E create(E entity) {
-        lastId++;
-        entity.setId(lastId);
-        entities.put(lastId, entity);
-        return entity;
-    }
-
-    @Override
-    public E update(E entity) {
-        if (checkNull(entity)) {
-            entities.put(entity.getId(), entity);
-            return entity;
-        }
-        return null;
-    }
-
-    @Override
-    public E delete(E entity) {
-        if (checkNull(entity)) {
-            entities.remove(entity.getId());
-            return entity;
-        }
-        return null;
-    }
-
-    @Override
-    public void deleteAll() {
-        entities.clear();
-        lastId = 0;
-    }
-}
diff --git a/backend/src/main/java/com/example/backend/movies/api/MovieDTO.java b/backend/src/main/java/com/example/backend/movies/api/MovieDTO.java
index 5eb5c3b..805b93b 100644
--- a/backend/src/main/java/com/example/backend/movies/api/MovieDTO.java
+++ b/backend/src/main/java/com/example/backend/movies/api/MovieDTO.java
@@ -5,9 +5,11 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import jakarta.validation.constraints.Min;
 import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.Size;
 
 public class MovieDTO {
 
+    @JsonProperty(access = JsonProperty.Access.READ_ONLY)
     private Integer id;
 
     @NotNull
@@ -15,12 +17,15 @@ public class MovieDTO {
     private Integer categorieId;
 
     @NotBlank
+    @Size(min = 2, max = 50)
     private String name;
 
     @NotBlank
+    @Size(min = 2, max = 50)
     private String description;
 
     @NotBlank
+    @Size(min = 2, max = 50)
     private String duration;
 
     private String image;
diff --git a/backend/src/main/java/com/example/backend/movies/model/MovieEntity.java b/backend/src/main/java/com/example/backend/movies/model/MovieEntity.java
index 735a0a4..22b607e 100644
--- a/backend/src/main/java/com/example/backend/movies/model/MovieEntity.java
+++ b/backend/src/main/java/com/example/backend/movies/model/MovieEntity.java
@@ -5,13 +5,30 @@ import java.util.Objects;
 import com.example.backend.categories.model.CategorieEntity;
 import com.example.backend.core.model.BaseEntity;
 
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "movies")
 public class MovieEntity extends BaseEntity {
 
+    @OneToMany
+    @JoinColumn(name = "categorieId", nullable = false)
     private CategorieEntity categorie;
 
+    @Column(nullable = false, unique = true, length = 50)
     private String name;
+
+    @Column(nullable = false, unique = true, length = 300)
     private String description;
+
+    @Column(nullable = false, unique = true, length = 50)
     private String duration;
+
+    @Column(nullable = true)
     private String image;
 
     public MovieEntity() {
@@ -21,7 +38,6 @@ public class MovieEntity extends BaseEntity {
     public MovieEntity(Integer id, CategorieEntity categorie, String name, String description, String duration,
             String image) {
 
-        super(id);
         this.categorie = categorie;
         this.name = name;
         this.description = description;
diff --git a/backend/src/main/java/com/example/backend/movies/repository/MovieRepository.java b/backend/src/main/java/com/example/backend/movies/repository/MovieRepository.java
index 414446a..415dd8c 100644
--- a/backend/src/main/java/com/example/backend/movies/repository/MovieRepository.java
+++ b/backend/src/main/java/com/example/backend/movies/repository/MovieRepository.java
@@ -1,11 +1,8 @@
 package com.example.backend.movies.repository;
 
-import org.springframework.stereotype.Repository;
+import java.util.Optional;
+import org.springframework.data.repository.CrudRepository;
 
-import com.example.backend.core.repository.MapRepository;
-import com.example.backend.movies.model.MovieEntity;
-
-@Repository
-public class MovieRepository extends MapRepository<MovieEntity> {
-
-}
+public interface MovieRepository extends CrudRepository<MovieRepository, Integer> {
+    Optional<MovieRepository> findByNameIgnoreCase(String name);
+}
\ No newline at end of file