diff --git a/123/Data/LocalData/Entity/Presence.cs b/123/Data/LocalData/Entity/Presence.cs
index dde230d..fcaeeb0 100644
--- a/123/Data/LocalData/Entity/Presence.cs
+++ b/123/Data/LocalData/Entity/Presence.cs
@@ -8,7 +8,7 @@ namespace _123.Data.LocalData.Entity
 {
     public class PresenceLocalEntity
     {
-         public required Guid UserGuid { get; set; }
+        public required Guid UserGuid { get; set; }
         public bool IsAttedance { get; set; } = true;
         public required DateOnly Date { get; set; }
 
diff --git a/123/Data/LocalData/LocalStaticData.cs b/123/Data/LocalData/LocalStaticData.cs
index 2973c24..3ab7aad 100644
--- a/123/Data/LocalData/LocalStaticData.cs
+++ b/123/Data/LocalData/LocalStaticData.cs
@@ -1,4 +1,5 @@
 using _123.Data.LocalData.Entity;
+using _123.Data.RemoteData.RemoteDatabase.DAO;
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/123/Data/RemoteData/RemoteDatabase/DAO/Group.cs b/123/Data/RemoteData/RemoteDatabase/DAO/Group.cs
new file mode 100644
index 0000000..ac7fe3e
--- /dev/null
+++ b/123/Data/RemoteData/RemoteDatabase/DAO/Group.cs
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace _123.Data.RemoteData.RemoteDatabase.DAO
+{
+    public class GroupDao
+    {
+        public int ID { get; set; }
+        public required string Name { get; set; }
+        public IEnumerable<UserDao> Users { get; set; }
+    }
+}
diff --git a/123/Data/RemoteData/RemoteDatabase/DAO/Presence.cs b/123/Data/RemoteData/RemoteDatabase/DAO/Presence.cs
new file mode 100644
index 0000000..bf6c3db
--- /dev/null
+++ b/123/Data/RemoteData/RemoteDatabase/DAO/Presence.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace _123.Data.RemoteData.RemoteDatabase.DAO
+{
+    public class PresenceDao 
+    { 
+        public required Guid UserGuid { get; set; }
+        public bool IsAttedance { get; set; } = true;
+        public required DateOnly Date { get; set; }
+
+        public required int LessonNumber { get; set; }
+        public UserDao UserDao { get; set; }
+    }
+}
diff --git a/123/Data/RemoteData/RemoteDatabase/DAO/User.cs b/123/Data/RemoteData/RemoteDatabase/DAO/User.cs
new file mode 100644
index 0000000..37cce29
--- /dev/null
+++ b/123/Data/RemoteData/RemoteDatabase/DAO/User.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace _123.Data.RemoteData.RemoteDatabase.DAO
+{
+    public class UserDao 
+    {
+        public required string UserFIO { get; set; }
+        public Guid UserGuid { get; set; }
+
+        public required int GroupID { get; set; }
+        
+        public GroupDao Group { get; set; }
+    }
+}
diff --git a/123/Data/RemoteData/RemoteDatabase/RemoteDatabaseContext.cs b/123/Data/RemoteData/RemoteDatabase/RemoteDatabaseContext.cs
new file mode 100644
index 0000000..b5f9b26
--- /dev/null
+++ b/123/Data/RemoteData/RemoteDatabase/RemoteDatabaseContext.cs
@@ -0,0 +1,36 @@
+using _123.Data.RemoteData.RemoteDatabase.DAO;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace _123.Data.RemoteData.RemoteDatabase
+{
+    internal class RemoteDatabaseContext: DbContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            optionsBuilder.UseNpgsql();
+        }
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            modelBuilder.Entity<GroupDao>().HasKey(group => group.ID);
+            modelBuilder.Entity<GroupDao>().Property(group => group.ID).ValueGeneratedOnAdd();
+            modelBuilder.Entity<UserDao>().HasKey(user => user.UserGuid);
+            modelBuilder.Entity<UserDao>().Property(user => user.UserGuid).ValueGeneratedOnAdd();
+            modelBuilder.Entity<PresenceDao>().HasKey(presence => new
+            {
+                presence.UserGuid,
+                presence.Date,
+                presence.IsAttedance,
+                presence.LessonNumber
+            });
+        }
+        public DbSet<GroupDao> Groups { get; set; }
+        public DbSet<UserDao> Users { get; set; }
+        public DbSet<PresenceDao> PresencesDaos { get; set; }
+    }
+    }
+
diff --git a/123/Data/ReportsHistory/GroupRepositoty.cs b/123/Data/ReportsHistory/GroupRepositoty.cs
deleted file mode 100644
index 079bdba..0000000
--- a/123/Data/ReportsHistory/GroupRepositoty.cs
+++ /dev/null
@@ -1,29 +0,0 @@
-using _123.Data.LocalData.Entity;
-using _123.Data.LocalData;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace _123.Data.ReportsHistory
-{
-
-        public class GroupRepositoryImpl
-        {
-            public List<GroupLocalEntity> GetAllGroups() => LocalStaticData.groups;
-
-        public GroupLocalEntity? UpdateGroup(String name)
-        {
-            GroupLocalEntity? groupLocal = GetAllGroups()
-                .Where(x => x.Name == name).FirstOrDefault();
-            if (groupLocal == null) return null;
-            groupLocal.Name = name;
-            return groupLocal;
-        }
-        //public GroupLocalEntity AddGroup(String  name, String id)
-        //{
-        //    List<GroupLocalEntity> groups => new List<GroupLocalEntity>
-        //}
-        }
-    }
diff --git a/123/Data/Repository/GroupRepositoty.cs b/123/Data/Repository/GroupRepositoty.cs
new file mode 100644
index 0000000..8a2b1e1
--- /dev/null
+++ b/123/Data/Repository/GroupRepositoty.cs
@@ -0,0 +1,55 @@
+using _123.Data.LocalData.Entity;
+using _123.Data.LocalData;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using _123.Data.RemoteData.RemoteDatabase.DAO;
+
+namespace _123.Data.Repository
+{
+
+    public class GroupRepositoryImpl: IGroupRepository
+    {
+        public List<GroupLocalEntity> GetAllGroups() => LocalStaticData.groups;
+        public bool AddGroup(String name,String Id)
+        {
+            GroupLocalEntity? groupLocal = GetAllGroups().FirstOrDefault();
+            groupLocal.Name = name;
+            groupLocal.ID = int.Parse(Id);
+            return true;
+        }
+
+        public List<GroupLocalEntity> GetAllGroup()
+        {
+           return GetAllGroup();
+        }
+
+        public GroupLocalEntity GetGroupById(int groupID)
+        {
+            GroupLocalEntity? groupLocal = GetAllGroups()
+              .Where(x => x.ID == groupID).FirstOrDefault();
+           if (groupLocal == null) return null;
+            return groupLocal;
+        }
+
+        public bool RemoveGroupById(int groupID)
+        {
+            GroupLocalEntity? userLocal = GetAllGroups()
+                .Where(x => x.ID == groupID).FirstOrDefault();
+            if (userLocal == null) return false;
+            return GetAllGroups().Remove(userLocal);
+        }
+
+        public bool UpdateGroupById(int groupID, String name)
+        {
+            GroupLocalEntity? groupLocal = GetAllGroups()
+             .Where(x => x.ID == groupID).FirstOrDefault();
+          if (groupLocal == null) return false;
+           groupLocal.Name = name;
+           return true;
+        }
+    }
+        }
+    
diff --git a/123/Data/Repository/IGroupRepository.cs b/123/Data/Repository/IGroupRepository.cs
new file mode 100644
index 0000000..810dc41
--- /dev/null
+++ b/123/Data/Repository/IGroupRepository.cs
@@ -0,0 +1,19 @@
+using _123.Data.LocalData.Entity;
+using _123.Data.RemoteData.RemoteDatabase.DAO;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace _123.Data.Repository
+{
+    internal interface IGroupRepository
+    {
+        List<GroupLocalEntity> GetAllGroup();
+        bool RemoveGroupById(int groupID);
+        bool UpdateGroupById(int groupID, String name);
+        GroupLocalEntity GetGroupById(int groupID);
+        bool AddGroup(String name, String id);
+    }
+}
diff --git a/123/Data/Repository/IPresenceRepository.cs b/123/Data/Repository/IPresenceRepository.cs
new file mode 100644
index 0000000..5a22e99
--- /dev/null
+++ b/123/Data/Repository/IPresenceRepository.cs
@@ -0,0 +1,19 @@
+using _123.Data.LocalData.Entity;
+using _123.Domain.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace _123.Data.Repository
+{
+    interface IPresenceRepository
+    {
+        List<PresenceLocalEntity> GetPresenceByGroup(int groupId);
+        List<PresenceLocalEntity>  GetPresenceByGroupAndDate(int groupId, DateOnly date);
+        void UnCheckAttendence (PresenceLocalEntity presence);
+        void  AddPresence (PresenceLocalEntity presence);
+
+    }
+}
diff --git a/123/Data/Repository/IUserRepository.cs b/123/Data/Repository/IUserRepository.cs
new file mode 100644
index 0000000..09ff06c
--- /dev/null
+++ b/123/Data/Repository/IUserRepository.cs
@@ -0,0 +1,20 @@
+using _123.Data.LocalData.Entity;
+using _123.Data.RemoteData.RemoteDatabase.DAO;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace _123.Data.Repository
+{
+    internal interface IUserRepository
+    {
+        public List<UserLocalEntity> GetAllUsers();
+        bool RemoveUserByGuid(Guid userGuid);
+        UserLocalEntity FindUserByGuid(Guid userGuid);
+        UserLocalEntity? GetUserByGuid(Guid userGuid);
+        UserLocalEntity? UpdateUser(UserLocalEntity userUpdateLocalEnity);
+        UserLocalEntity? UpdateUserByGuid(Guid userGuid);
+    }
+}
diff --git a/123/Data/Repository/PresenceRepository.cs b/123/Data/Repository/PresenceRepository.cs
new file mode 100644
index 0000000..dd96fcf
--- /dev/null
+++ b/123/Data/Repository/PresenceRepository.cs
@@ -0,0 +1,49 @@
+using _123.Data.LocalData;
+using _123.Data.LocalData.Entity;
+using _123.Domain.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace _123.Data.Repository
+{
+    public class PresenceRepositoryImpl : IPresenceRepository
+
+    {
+        public PresenceRepositoryImpl()
+        {
+            GetAllPresences = LocalStaticData.presences;
+        }
+        public List<PresenceLocalEntity> GetAllPresences
+        { get; set; }
+
+        public void AddPresence(PresenceLocalEntity presence)
+        {
+            PresenceLocalEntity? presenceLocal = GetAllPresences.FirstOrDefault();
+            presenceLocal.UserGuid = presence.UserGuid;
+            presenceLocal.Date = presence.Date;
+            presenceLocal.IsAttedance = presence.IsAttedance;
+            presenceLocal.LessonNumber = presence.LessonNumber;
+
+        }
+
+        public List<PresenceLocalEntity> GetPresenceByGroup(int groupId)
+        {
+            
+        }
+
+        public List<PresenceLocalEntity> GetPresenceByGroupAndDate(int groupId, DateOnly date)
+        {
+            throw new NotImplementedException();
+        }
+
+        public void UnCheckAttendence(Presence presence)
+        {
+            throw new NotImplementedException();
+        }
+    }
+
+}
diff --git a/123/Data/ReportsHistory/UserRepositoty.cs b/123/Data/Repository/UserRepositoty.cs
similarity index 89%
rename from 123/Data/ReportsHistory/UserRepositoty.cs
rename to 123/Data/Repository/UserRepositoty.cs
index 5d8f5e2..e3e133c 100644
--- a/123/Data/ReportsHistory/UserRepositoty.cs
+++ b/123/Data/Repository/UserRepositoty.cs
@@ -1,5 +1,7 @@
 using _123.Data.LocalData;
 using _123.Data.LocalData.Entity;
+using _123.Data.RemoteData.RemoteDatabase.DAO;
+using _123.Data.Repository;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -9,7 +11,7 @@ using System.Xml.Linq;
 
 namespace _123.Data.ReportsHistory
 {
-    public class UserRepositoryImpl
+    public class UserRepositoryImpl: IUserRepository
     {
         public UserRepositoryImpl()
         {
@@ -64,5 +66,9 @@ namespace _123.Data.ReportsHistory
 
         }
 
+        List<UserLocalEntity> IUserRepository.GetAllUsers()
+        {
+            throw new NotImplementedException();
+        }
     }
 }
diff --git a/123/Demo.csproj b/123/Demo.csproj
index ebb8a92..47c142b 100644
--- a/123/Demo.csproj
+++ b/123/Demo.csproj
@@ -9,7 +9,13 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <Folder Include="Data\RemoteData\" />
+    <PackageReference Include="Microsoft.EntityFrameworkcore" Version="8.0.10" />
+    <PackageReference Include="Microsoft.EntityFrameworkcore.Design" Version="8.0.10">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.1" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.10" />
   </ItemGroup>
 
 </Project>
diff --git a/123/Domain/UseCase/GroupUseCase.cs b/123/Domain/UseCase/GroupUseCase.cs
index 4d08baf..e36ef4a 100644
--- a/123/Domain/UseCase/GroupUseCase.cs
+++ b/123/Domain/UseCase/GroupUseCase.cs
@@ -6,6 +6,7 @@ using System.Text;
 using System.Threading.Tasks;
 using _123.Domain.Models;
 using _123.Data.LocalData.Entity;
+using _123.Data.Repository;
 
 namespace _123.Domain.UseCase
 {
@@ -19,13 +20,13 @@ namespace _123.Domain.UseCase
         public List<Group> GetAllGroups() => _repositoryGroupImpl.GetAllGroups()
              .Select(it => new Group { ID = it.ID, Name = it.Name }).ToList();
 
-        public Group UpdateGroupName(String name, String name1)
+        public bool UpdateGroupName(String id, String name1)
         {
-            GroupLocalEntity? result = _repositoryGroupImpl.UpdateGroup(name);
-            if (result == null) throw new Exception("");
-            Group? group = GetAllGroups().FirstOrDefault(it => it.Name == result!.Name);
-            if (group == null) throw new Exception("");
-            return new Group { ID = group.ID, Name = name1 };
+            return _repositoryGroupImpl.UpdateGroupById(int.Parse(id), name1);
+        }
+        public bool AddGroup(String name, string id)
+        {
+            return _repositoryGroupImpl.AddGroup(name, id);
         }
     }
     
diff --git a/123/Domain/UseCase/PresenceUseCase.cs b/123/Domain/UseCase/PresenceUseCase.cs
new file mode 100644
index 0000000..1cad8a4
--- /dev/null
+++ b/123/Domain/UseCase/PresenceUseCase.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace _123.Domain.UseCase
+{
+    class PresenceUseCase
+    {
+    }
+}
diff --git a/123/Domain/UseCase/UseCaseGeneratePresence.cs b/123/Domain/UseCase/UseCaseGeneratePresence.cs
new file mode 100644
index 0000000..6927465
--- /dev/null
+++ b/123/Domain/UseCase/UseCaseGeneratePresence.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace _123.Domain.UseCase
+{
+    internal class UseCaseGeneratePresence
+    {
+
+    }
+}
diff --git a/123/Domain/UseCase/UserUseCase.cs b/123/Domain/UseCase/UserUseCase.cs
index 95d70bf..f073de2 100644
--- a/123/Domain/UseCase/UserUseCase.cs
+++ b/123/Domain/UseCase/UserUseCase.cs
@@ -1,5 +1,7 @@
 using _123.Data.LocalData.Entity;
+using _123.Data.RemoteData.RemoteDatabase.DAO;
 using _123.Data.ReportsHistory;
+using _123.Data.Repository;
 using _123.Domain.Models;
 using System;
 using System.Collections.Generic;
@@ -11,8 +13,10 @@ namespace _123.Domain.UseCase
 {
     public class UserUseCase
     {
-        private UserRepositoryImpl _repositoryUserImpl;
-        private GroupRepositoryImpl _repositoryGroupImpl;
+        //private readonly UserRepositoryImpl _repositoryUserImpl;
+        //private readonly GroupRepositoryImpl _repositoryGroupImpl;
+        private readonly UserRepositoryImpl _repositoryUserImpl;
+        private readonly IGroupRepository _repositoryGroupImpl;
 
         public UserUseCase(UserRepositoryImpl repositoryImpl, GroupRepositoryImpl repositoryGroupImpl)
         {
@@ -20,10 +24,10 @@ namespace _123.Domain.UseCase
             _repositoryGroupImpl = repositoryGroupImpl;
         }
 
-        public List<Group> GetAllGroups() => _repositoryGroupImpl.GetAllGroups()
+        public List<Group> GetAllGroups() => _repositoryGroupImpl.GetAllGroup()
               .Select(it => new Group { ID = it.ID, Name = it.Name }).ToList();
-        public List<User> GetAllUsers() => _repositoryUserImpl.GetAllUsers
-              .Join(_repositoryGroupImpl.GetAllGroups(),
+        private List<User> GetAllUsers() => _repositoryUserImpl.GetAllUsers
+              .Join(_repositoryGroupImpl.GetAllGroup(),
               user => user.GroupID,
               group => group.ID,
               (user, group) =>
diff --git a/123/Program.cs b/123/Program.cs
index b9d7ee3..03eec2b 100644
--- a/123/Program.cs
+++ b/123/Program.cs
@@ -1,6 +1,15 @@
 using _123.Data.ReportsHistory;
+using _123.Data.Repository;
 using _123.Domain.UseCase;
 using _123.UI;
+using Microsoft.Extensions.DependencyInjection;
+using System.Text.RegularExpressions;
+
+IServiceCollection services = new ServiceCollection();
+services 
+    .AddSingleton<IGroupRepository, GroupRepositoryImpl>()
+    .AddSingleton<UserUseCase>();
+var serviceProvider = services.BuildServiceProvider ();
 
 GroupRepositoryImpl groupRepositoryImpl = new GroupRepositoryImpl();
 UserRepositoryImpl userRepositoryImpl = new UserRepositoryImpl();
diff --git a/123/UI/GroupConsole.cs b/123/UI/GroupConsole.cs
index e19ce86..6d145d2 100644
--- a/123/UI/GroupConsole.cs
+++ b/123/UI/GroupConsole.cs
@@ -33,5 +33,15 @@ namespace _123.UI
             }
             Console.WriteLine(groupOutput);
         }
+        public void AddGroup (String name, String id)
+        {
+            StringBuilder groupOutput = new StringBuilder();
+            var group = _groupUseCase.AddGroup(name,id);
+            {
+                groupOutput.AppendLine($"{group.Name}\t{group.ID}");
+            }
+            Console.WriteLine(groupOutput);
+        }
+        
     }
 }
\ No newline at end of file
diff --git a/123/UI/MainMenu.cs b/123/UI/MainMenu.cs
index 40d666c..8099cb6 100644
--- a/123/UI/MainMenu.cs
+++ b/123/UI/MainMenu.cs
@@ -34,7 +34,8 @@ namespace _123.UI
                     case "3": _groupConsoleUI.DisplayAllGroups(); break;
                     case "4": _userConsoleUI.FindUserByGuid(Guid.Parse(Console.ReadLine()));break;
                     case "5": _userConsoleUI.UpdateUserByGuid(Guid.Parse(Console.ReadLine()),Console.ReadLine(), Console.ReadLine()); break;
-                    case "6": _groupConsoleUI.UpdateGroupName(Console.ReadLine(),Console.ReadLine());  break;    
+                    case "6": _groupConsoleUI.UpdateGroupName(Console.ReadLine(),Console.ReadLine());  break;
+                    case "7": _groupConsoleUI.AddGroup(Console.ReadLine(), Console.ReadLine());break;
                     default:
                         DisplayMenu();
                         break;
diff --git a/123/UI/PresenceConsole.cs b/123/UI/PresenceConsole.cs
new file mode 100644
index 0000000..3de68aa
--- /dev/null
+++ b/123/UI/PresenceConsole.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace _123.UI
+{
+    internal class PresenceConsole
+    {
+    }
+}
diff --git a/Загрузки - Ярлык.lnk b/Загрузки - Ярлык.lnk
new file mode 100644
index 0000000..dc2ead3
Binary files /dev/null and b/Загрузки - Ярлык.lnk differ