diff --git a/src/HeartTrack.sln b/src/HeartTrack.sln
index af451f5..2c7a9fa 100644
--- a/src/HeartTrack.sln
+++ b/src/HeartTrack.sln
@@ -35,8 +35,6 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UnitTestApi", "Tests\TestsA
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UnitTestsEntities", "Tests\UnitTestsEntities\UnitTestsEntities.csproj", "{31FA8E5E-D642-4C43-A2B2-02B9832B2CEC}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SharedEF", "SharedEF\SharedEF.csproj", "{55478079-0AA0-47C1-97FF-A048091FD930}"
-EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Model2Entities", "Model2Entities\Model2Entities.csproj", "{FA329DEF-4756-4A8B-84E9-5A625FF94CBF}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StubAPI", "StubAPI\StubAPI.csproj", "{C9BD0310-DC18-4356-B8A7-2B6959AF7813}"
@@ -110,10 +108,6 @@ Global
 		{31FA8E5E-D642-4C43-A2B2-02B9832B2CEC}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{31FA8E5E-D642-4C43-A2B2-02B9832B2CEC}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{31FA8E5E-D642-4C43-A2B2-02B9832B2CEC}.Release|Any CPU.Build.0 = Release|Any CPU
-		{55478079-0AA0-47C1-97FF-A048091FD930}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{55478079-0AA0-47C1-97FF-A048091FD930}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{55478079-0AA0-47C1-97FF-A048091FD930}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{55478079-0AA0-47C1-97FF-A048091FD930}.Release|Any CPU.Build.0 = Release|Any CPU
 		{FA329DEF-4756-4A8B-84E9-5A625FF94CBF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{FA329DEF-4756-4A8B-84E9-5A625FF94CBF}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{FA329DEF-4756-4A8B-84E9-5A625FF94CBF}.Release|Any CPU.ActiveCfg = Release|Any CPU
diff --git a/src/HeartTrackAPI/Controllers/UsersController.cs b/src/HeartTrackAPI/Controllers/UsersController.cs
index 7b57283..ea98a15 100644
--- a/src/HeartTrackAPI/Controllers/UsersController.cs
+++ b/src/HeartTrackAPI/Controllers/UsersController.cs
@@ -19,7 +19,7 @@ public class UsersController : Controller
     public UsersController(ILogger<UsersController> logger, IDataManager dataManager)
     {
         _logger = logger;
-        _userService = dataManager.UserRepository;
+        _userService = dataManager.UserRepo;
     }
 
     [HttpGet]
diff --git a/src/Model/Manager/IDataManager.cs b/src/Model/Manager/IDataManager.cs
index 277ea0b..6fc8532 100644
--- a/src/Model/Manager/IDataManager.cs
+++ b/src/Model/Manager/IDataManager.cs
@@ -4,6 +4,6 @@ namespace Model.Manager;
 
 public interface IDataManager
 {
-    IUserRepository UserRepository { get; }
-    IActivityRepository ActivityRepository { get; }
+    IUserRepository UserRepo { get; }
+    IActivityRepository ActivityRepo { get; }
 }
diff --git a/src/Model2Entities/ActivityRepository.cs b/src/Model2Entities/ActivityRepository.cs
index f879b17..f94e7e4 100644
--- a/src/Model2Entities/ActivityRepository.cs
+++ b/src/Model2Entities/ActivityRepository.cs
@@ -1,4 +1,6 @@
-using SharedEF;
+using Model;
+using Model.Repository;
+using Shared;
 
 namespace Model2Entities;
 
@@ -13,42 +15,28 @@ public partial class DbDataManager
             _dataManager = dataManager;
         }
 
-        public async Task<IEnumerable<Activity>> GetItems(int index, int count, Enum? orderingProperty = null, bool descending = false)
+
+        public async Task<IEnumerable<Activity>> GetActivities(int index, int count, ActivityOrderCriteria criteria, bool descending = false)
         {
-            // public class MyLogger
-            // {
-            //     public void Log(string component, string message)
-            //     {
-            //         Console.WriteLine("Component: {0} Message: {1} ", component, message);
-            //     }
-            // }
-            // ? Utilisation du logger !!!
-            //! using (var context = new LibraryContext()) 
-            //! {
-                // var logger = new MyLogger();
-                // context.Database.Log = s => logger.Log("EFApp", s);
-            //!     // log la connexion à la base de donnée
-            //!     context.Database.Log = Console.Write;
-            //! }
             throw new NotImplementedException();
         }
 
-        public async Task<Activity> GetItemById(int id)
+        public async Task<Activity?> GetActivityByIdAsync(int id)
         {
             throw new NotImplementedException();
         }
 
-        public async Task<Activity> UpdateItem(int oldItem, Activity newItem)
+        public async Task<Activity?> AddActivity(Activity activity)
         {
             throw new NotImplementedException();
         }
 
-        public async Task<Activity> AddItem(Activity item)
+        public async Task<Activity?> UpdateActivity(int id, Activity activity)
         {
             throw new NotImplementedException();
         }
 
-        public async Task<bool> DeleteItem(Activity item)
+        public async Task<bool> DeleteActivity(int id)
         {
             throw new NotImplementedException();
         }
diff --git a/src/Model2Entities/DbDataManager.cs b/src/Model2Entities/DbDataManager.cs
index fbecaa2..ec2a3fe 100644
--- a/src/Model2Entities/DbDataManager.cs
+++ b/src/Model2Entities/DbDataManager.cs
@@ -1,5 +1,6 @@
 using DbContextLib;
-using SharedEF;
+using Model.Manager;
+using Model.Repository;
 
 namespace Model2Entities;
 
@@ -24,5 +25,4 @@ public DbDataManager(HeartTrackContext dbContext)
         ActivityRepo = new ActivityRepository(this);
         UserRepo= new UserRepository(this);
     }
-    
 }
diff --git a/src/Model2Entities/Model2Entities.csproj b/src/Model2Entities/Model2Entities.csproj
index 8380302..b250a0c 100644
--- a/src/Model2Entities/Model2Entities.csproj
+++ b/src/Model2Entities/Model2Entities.csproj
@@ -8,7 +8,7 @@
 
     <ItemGroup>
       <ProjectReference Include="..\DbContextLib\DbContextLib.csproj" />
-      <ProjectReference Include="..\SharedEF\SharedEF.csproj" />
+      <ProjectReference Include="..\Model\Model.csproj" />
     </ItemGroup>
 
 </Project>
diff --git a/src/Model2Entities/UserRepository.cs b/src/Model2Entities/UserRepository.cs
index 1bca2de..e9716f1 100644
--- a/src/Model2Entities/UserRepository.cs
+++ b/src/Model2Entities/UserRepository.cs
@@ -1,4 +1,6 @@
-using SharedEF;
+using Model;
+using Model.Repository;
+using Shared;
 
 namespace Model2Entities;
 
@@ -12,6 +14,40 @@ public partial class DbDataManager
         {
             _dataManager = dataManager;
         }
-       
+
+        public async Task<IEnumerable<User>> GetItems(int index, int count, string? orderingProperty = null, bool descending = false)
+        {
+            throw new NotImplementedException();
+        }
+
+        public async Task<User?> GetItemById(int id)
+        {
+            throw new NotImplementedException();
+        }
+
+        public async Task<User?> UpdateItem(int oldItem, User newItem)
+        {
+            throw new NotImplementedException();
+        }
+
+        public async Task<User?> AddItem(User item)
+        {
+            throw new NotImplementedException();
+        }
+
+        public async Task<bool> DeleteItem(int item)
+        {
+            throw new NotImplementedException();
+        }
+
+        public async Task<int> GetNbItems()
+        {
+            throw new NotImplementedException();
+        }
+
+        public async Task<IEnumerable<User>> GetUsers(int index, int count, AthleteOrderCriteria? criteria, bool descending = false)
+        {
+            throw new NotImplementedException();
+        }
     }
 }
\ No newline at end of file
diff --git a/src/StubAPI/StubData.cs b/src/StubAPI/StubData.cs
index 1037cf6..bceb496 100644
--- a/src/StubAPI/StubData.cs
+++ b/src/StubAPI/StubData.cs
@@ -5,12 +5,12 @@ namespace StubAPI;
 
 public class StubData : IDataManager
 {
-    public IUserRepository UserRepository { get; }
-    public IActivityRepository ActivityRepository { get; }
+    public IUserRepository UserRepo { get; }
+    public IActivityRepository ActivityRepo { get; }
 
     public StubData()
     {
-        UserRepository = new UserService();
-        ActivityRepository = new ActivityService();
+        UserRepo = new UserService();
+        ActivityRepo = new ActivityService();
     }
 }
\ No newline at end of file