diff --git a/Diagramme-de-classe.md b/Diagramme-de-classe.md
index 7738498..5836084 100644
--- a/Diagramme-de-classe.md
+++ b/Diagramme-de-classe.md
@@ -1,6 +1,6 @@
 ```mermaid
 classDiagram
-    Manager -- User
+    Controller -- User
 
     class User{
         - idDafl : int
@@ -30,60 +30,58 @@ classDiagram
         - content : string
     }
     
-    class IPersistenceManager{
-    	<<interface>>
-        
-        + search(id : String, password : String) : bool
-        + save();
-        + load(id : String, password : String) : User
-    }
     
-    class DataStub{
-    	- userDataBase :  List<User>
-        
-        +createUser(String userName, String name, String password) : User
-        +addUserInDatabase(User UsrToAdd)
-        +load(String id, String password) : User
-        +search(String? id, String? password) : bool
-    }
     
-    class DataSerializer{
+    class ApiManager{
     	
     }
     
+    class Loader{
+    	+load() : User
+    }
     
-    class DataBaseAccesser{
-    	
+    class Saver{
+    	+save(userToSave : User)
+    }
+
+	class Controller{
+    	+load() : User
+        +save(userToSave : User)
     }
     
+    class DataBaseLoader{
+    	+load() : User
+    }
     
-    class ApiManager{
-    	
+    class DataBaseSaver{
+    	+save(userToSave : User)
     }
     
-    class DataBaseManager{
-    	- cache : File
-        - id : String
-        - password : String
-        - pers : IPersistenceManager
-        
-        +readAccountCacheFile() : User
+    class StubLoader{
+    	+load() : User
     }
     
+    class StubSaver{
+    	+save(userToSave : User)
+    }
+    
+    
+    
     
     
     User "firstUser" -- "secondUser" Conversation
     Conversation -- User
     Conversation o-- Message
     
-    Manager -- DataBaseManager
-	Manager -- ApiManager
+    Controller -- Loader
+    Controller -- Saver
+	Controller -- ApiManager
     
-    DataBaseManager -- IPersistenceManager
 
-    IPersistenceManager <|-- DataStub
-    IPersistenceManager <|-- DataSerializer
-    IPersistenceManager <|-- DataBaseAccesser
+    Loader <|-- DataBaseLoader
+    Saver <|-- DataBaseSaver
+    Loader <|-- StubLoader
+    Saver <|-- StubSaver
     
 ```