diff --git a/SewerStammGen.Console/Program.cs b/SewerStammGen.Console/Program.cs
new file mode 100644
index 0000000..df21b49
--- /dev/null
+++ b/SewerStammGen.Console/Program.cs
@@ -0,0 +1,10 @@
+namespace SewerStammGen.Console
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Hello, World!");
+        }
+    }
+}
\ No newline at end of file
diff --git a/SewerStammGen.Console/SewerStammGen.Console.csproj b/SewerStammGen.Console/SewerStammGen.Console.csproj
new file mode 100644
index 0000000..1c9d818
--- /dev/null
+++ b/SewerStammGen.Console/SewerStammGen.Console.csproj
@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\SewerStammGen.DAL\SewerStammGen.DAL.csproj" />
+    <ProjectReference Include="..\Shared\SewerStammGen.Shared.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/SewerStammGen.ConsoleApp/Program.cs b/SewerStammGen.ConsoleApp/Program.cs
new file mode 100644
index 0000000..f531e46
--- /dev/null
+++ b/SewerStammGen.ConsoleApp/Program.cs
@@ -0,0 +1,43 @@
+using SewerStammGen.DAL.Services;
+
+using SewerStammGen.Shared.Contracts;
+using SewerStammGen.Shared.Domain;
+using SewerStammGen.Shared.Enum;
+using System.Diagnostics;
+
+namespace SewerStammGen.ConsoleApp
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            IProjektDataService projektService = new ProjektDataService();
+
+            Projekt neuesProjekt = new Projekt()
+            {
+                Erstelldatum = "test",
+                Projektname = "test",
+                Kodierungssystem = EKodierungssystem.EN13508_2_2011,
+                ExportType = EExportType.XML2006,
+                Ort = "test",
+                Strasse = "test",
+            };
+
+            //test(neuesProjekt, projektService);
+            readtest(projektService);
+            Console.WriteLine("Hello, World!");
+        }
+
+        private static async void readtest(IProjektDataService projektService)
+        {
+            var m = await projektService.GetAll();
+            Debugger.Break();
+        }
+
+        private static async void test(Projekt neuesProjekt, IProjektDataService projektService)
+        {
+            var m = await projektService.Create(neuesProjekt);
+            Console.WriteLine(m.Id);
+        }
+    }
+}
\ No newline at end of file
diff --git a/SewerStammGen.ConsoleApp/SewerStammGen.ConsoleApp.csproj b/SewerStammGen.ConsoleApp/SewerStammGen.ConsoleApp.csproj
new file mode 100644
index 0000000..1c9d818
--- /dev/null
+++ b/SewerStammGen.ConsoleApp/SewerStammGen.ConsoleApp.csproj
@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\SewerStammGen.DAL\SewerStammGen.DAL.csproj" />
+    <ProjectReference Include="..\Shared\SewerStammGen.Shared.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/SewerStammGen.DAL/Class1.cs b/SewerStammGen.DAL/Class1.cs
new file mode 100644
index 0000000..ced36b0
--- /dev/null
+++ b/SewerStammGen.DAL/Class1.cs
@@ -0,0 +1,7 @@
+namespace SewerStammGen.DAL
+{
+    public class Class1
+    {
+
+    }
+}
\ No newline at end of file
diff --git a/SewerStammGen.DAL/Services/AuftraggeberDataService.cs b/SewerStammGen.DAL/Services/AuftraggeberDataService.cs
new file mode 100644
index 0000000..f97b809
--- /dev/null
+++ b/SewerStammGen.DAL/Services/AuftraggeberDataService.cs
@@ -0,0 +1,89 @@
+using Npgsql;
+using SewerStammGen.Shared.Contracts;
+using SewerStammGen.Shared.Domain;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SewerStammGen.DAL.Services
+{
+    public class AuftraggeberDataService : IAuftraggeberDataService
+    {
+        string connString = "Host = localhost; Database = SewerGen; Username = SewerGen; Password = SewerGen";
+        NpgsqlDataSource dataSource;
+        NpgsqlConnection? conn = null;
+        public AuftraggeberDataService()
+        {
+            var dataSourceBuilder = new NpgsqlDataSourceBuilder(connString);
+            dataSource = dataSourceBuilder.Build();
+
+            //OpenConnection();
+            conn = dataSource.OpenConnection();
+
+        }
+        public Task<Auftraggeber> Create(Auftraggeber entity)
+        {
+            throw new NotImplementedException();
+        }
+
+        public Auftraggeber CreateNonAsync(Auftraggeber entity)
+        {
+            throw new NotImplementedException();
+        }
+
+        public Task<bool> Delete(int id)
+        {
+            throw new NotImplementedException();
+        }
+
+        public async Task<Auftraggeber> Get(int id)
+        {
+            Auftraggeber result = new Auftraggeber();
+            using (var cmd = new NpgsqlCommand($"SELECT * FROM public.\"Auftraggebers\" WHERE \"Id\" = @1", conn))
+            {
+                cmd.Parameters.AddWithValue("1", id);
+                using var reader = await cmd.ExecuteReaderAsync();
+                reader.Read();
+                result = parseAuftraggeber(reader);
+            }
+            
+            return result;
+                    
+        }
+
+        private Auftraggeber parseAuftraggeber(NpgsqlDataReader reader)
+        {
+            return new Auftraggeber()
+            {
+                Id = reader.GetInt32(0),
+                Name = reader.IsDBNull(1) ? "" : reader.GetString(1),
+                Strasse = reader.IsDBNull(2) ? "" : reader.GetString(2),
+                Ort = reader.IsDBNull(3) ? "" : reader.GetString(3),
+                Postleitzahl = reader.IsDBNull(4) ? "" : reader.GetString(4),
+                Ansprechpartner = reader.IsDBNull(5) ? "" : reader.GetString(5),
+                Telefonnummer = reader.IsDBNull(6) ? "" : reader.GetString(6)
+            };
+        }
+
+        public async Task<IEnumerable<Auftraggeber>> GetAll()
+        {
+            List<Auftraggeber> result = new List<Auftraggeber>();
+            using (var cmd = new NpgsqlCommand($"SELECT * FROM public.\"Auftraggebers\"", conn))
+            using (var reader = await cmd.ExecuteReaderAsync())
+            {
+                while (reader.Read())
+                {
+                    result.Add(parseAuftraggeber(reader));
+                }
+            }
+            return result;
+        }
+
+        public Task<Auftraggeber> Update(int id, Auftraggeber entity)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}
diff --git a/SewerStammGen.DAL/Services/ProjektDataService.cs b/SewerStammGen.DAL/Services/ProjektDataService.cs
new file mode 100644
index 0000000..d304cb2
--- /dev/null
+++ b/SewerStammGen.DAL/Services/ProjektDataService.cs
@@ -0,0 +1,119 @@
+using SewerStammGen.Shared.Contracts;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Npgsql;
+using SewerStammGen.Shared.Domain;
+using SewerStammGen.Shared.Enum;
+
+namespace SewerStammGen.DAL.Services
+{
+    public class ProjektDataService : IProjektDataService
+    {
+        string connString = "Host = localhost; Database = SewerGen; Username = SewerGen; Password = SewerGen";
+        NpgsqlDataSource dataSource;
+        NpgsqlConnection? conn = null;
+        public ProjektDataService()
+        {
+            var dataSourceBuilder = new NpgsqlDataSourceBuilder(connString);
+            dataSource = dataSourceBuilder.Build();
+           
+            //OpenConnection();
+            conn = dataSource.OpenConnection();
+            
+        }
+
+        private async void OpenConnection()
+        {
+            conn = await dataSource.OpenConnectionAsync();
+        }
+
+        public async Task<Projekt> Create(Projekt entity)
+        {
+            string command = "INSERT INTO public.\"Projekte\" (\"Projektname\", \"Erstelldatum\", \"Strasse\", \"Ort\", \"ExportType\", \"Kodierungssystem\",\"AuftraggeberId\") " +
+                "VALUES(@1,@2,@3,@4,@5,@6,@7) RETURNING \"Id\"";
+
+            await using(var cmd = new NpgsqlCommand(command, conn))
+            {
+                cmd.Parameters.AddWithValue("1", entity.Projektname);
+                cmd.Parameters.AddWithValue("2", entity.Erstelldatum);
+                cmd.Parameters.AddWithValue("3", entity.Strasse);
+                cmd.Parameters.AddWithValue("4", entity.Ort);
+                cmd.Parameters.AddWithValue("5", (int)entity.ExportType);
+                cmd.Parameters.AddWithValue("6", (int)entity.Kodierungssystem);
+                cmd.Parameters.AddWithValue("7", entity.Auftraggeber.Id);
+                using var reader = await cmd.ExecuteReaderAsync();
+                reader.Read();
+                entity.Id = reader.GetInt32(0);
+            }
+            return entity;
+        }
+
+        public Projekt CreateNonAsync(Projekt entity)
+        {
+            throw new NotImplementedException();
+        }
+
+        public Task<bool> Delete(int id)
+        {
+            throw new NotImplementedException();
+        }
+
+        public async Task<Projekt> Get(int id)
+        {
+            Projekt result = new Projekt();
+            IAuftraggeberDataService auftraggeberDataService = new AuftraggeberDataService();
+            using (var cmd = new NpgsqlCommand($"SELECT * FROM public.\"Projekte\" WHERE \"Id\" = @1", conn))
+            {
+                cmd.Parameters.AddWithValue("1", id);
+                using var reader = await cmd.ExecuteReaderAsync();
+                reader.Read();
+                result = parseProjekt(reader);
+                result.Auftraggeber = await auftraggeberDataService.Get(reader.GetInt32(7));
+            }
+            return result;
+        }
+
+        private Projekt? parseProjekt(NpgsqlDataReader reader)
+        {
+            return new Projekt()
+            {
+                Id = reader.GetInt32(0),
+                Projektname = reader.GetString(1),
+                Erstelldatum = reader.GetString(2),
+                Strasse = reader.GetString(3),
+                Ort = reader.GetString(4),
+                ExportType = (EExportType)reader.GetInt32(5),
+                Kodierungssystem = (EKodierungssystem)reader.GetInt32(6)
+            };
+        }
+
+        public async Task<IEnumerable<Projekt>> GetAll()
+        {
+            IAuftraggeberDataService auftraggeberDataService = new AuftraggeberDataService();
+
+            IEnumerable<Auftraggeber> auftraggebers = await auftraggeberDataService.GetAll();
+
+            List<Projekt> result = new List<Projekt>();
+            using (var cmd = new NpgsqlCommand($"SELECT * FROM public.\"Projekte\"", conn))
+            using (var reader = await cmd.ExecuteReaderAsync())
+            {
+                while (reader.Read())
+                {
+                    Projekt projekt = parseProjekt(reader);
+                    projekt.Auftraggeber = auftraggebers.Where(x => x.Id == reader.GetInt32(7)).ToList().Last();
+                    result.Add(projekt);
+                }
+            }    
+            return result;
+        }
+
+        public Task<Projekt> Update(int id, Projekt entity)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}
diff --git a/SewerStammGen.DAL/SewerStammGen.DAL.csproj b/SewerStammGen.DAL/SewerStammGen.DAL.csproj
new file mode 100644
index 0000000..0828c77
--- /dev/null
+++ b/SewerStammGen.DAL/SewerStammGen.DAL.csproj
@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Npgsql" Version="7.0.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Shared\SewerStammGen.Shared.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/SewerStammGen/Commands/HaltungEditSaveCommand.cs b/SewerStammGen/Commands/HaltungEditSaveCommand.cs
index d68507e..6f22117 100644
--- a/SewerStammGen/Commands/HaltungEditSaveCommand.cs
+++ b/SewerStammGen/Commands/HaltungEditSaveCommand.cs
@@ -1,7 +1,7 @@
 using SewerStammGen.Shared.Contracts;
+using SewerStammGen.Shared.Domain;
 using SewerStammGen.WPF.ViewModel;
 using Shared.Contracts;
-using Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
diff --git a/SewerStammGen/Commands/ProjektAddCommand.cs b/SewerStammGen/Commands/ProjektAddCommand.cs
index d951dc8..73cd275 100644
--- a/SewerStammGen/Commands/ProjektAddCommand.cs
+++ b/SewerStammGen/Commands/ProjektAddCommand.cs
@@ -1,7 +1,7 @@
-using SewerStammGen.WPF.Interface.Navigator;
+using SewerStammGen.Shared.Domain;
+using SewerStammGen.WPF.Interface.Navigator;
 using SewerStammGen.WPF.ViewModel.State;
 using Shared.Contracts;
-using Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/SewerStammGen/Commands/ProjektEditCommand.cs b/SewerStammGen/Commands/ProjektEditCommand.cs
index 9c564e8..aac2301 100644
--- a/SewerStammGen/Commands/ProjektEditCommand.cs
+++ b/SewerStammGen/Commands/ProjektEditCommand.cs
@@ -1,8 +1,8 @@
-using SewerStammGen.WPF.Interface.Navigator;
+using SewerStammGen.Shared.Domain;
+using SewerStammGen.WPF.Interface.Navigator;
 using SewerStammGen.WPF.ViewModel;
 using SewerStammGen.WPF.ViewModel.State;
 using Shared.Contracts;
-using Shared.Domain;
 using System.Runtime.CompilerServices;
 using System.Threading.Tasks;
 
diff --git a/SewerStammGen/Commands/ProjektSelectCommand.cs b/SewerStammGen/Commands/ProjektSelectCommand.cs
index e7a72de..5abcaad 100644
--- a/SewerStammGen/Commands/ProjektSelectCommand.cs
+++ b/SewerStammGen/Commands/ProjektSelectCommand.cs
@@ -1,6 +1,5 @@
 using SewerStammGen.WPF.ViewModel;
 using SewerStammGen.WPF.ViewModel.State;
-using Shared.Domain;
 using System;
 using System.Threading.Tasks;
 
diff --git a/SewerStammGen/Commands/SchachtAddCommand.cs b/SewerStammGen/Commands/SchachtAddCommand.cs
index 3584058..88b417b 100644
--- a/SewerStammGen/Commands/SchachtAddCommand.cs
+++ b/SewerStammGen/Commands/SchachtAddCommand.cs
@@ -1,8 +1,8 @@
 using SewerStammGen.Shared.Contracts;
+using SewerStammGen.Shared.Domain;
 using SewerStammGen.WPF.Interface.Navigator;
 using SewerStammGen.WPF.ViewModel.State;
 using Shared.Contracts;
-using Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/SewerStammGen/HostBuilders/AddServicesHostBuilderExtensions.cs b/SewerStammGen/HostBuilders/AddServicesHostBuilderExtensions.cs
index ea7caba..e71f624 100644
--- a/SewerStammGen/HostBuilders/AddServicesHostBuilderExtensions.cs
+++ b/SewerStammGen/HostBuilders/AddServicesHostBuilderExtensions.cs
@@ -1,13 +1,13 @@
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
-
+using SewerStammGen.DAL.Services;
 using SewerStammGen.Shared.Contracts;
 using SewerStammGen.Shared.Services;
 using SewerStammGen.WPF.Interface.Navigator;
 using SewerStammGen.WPF.ViewModel;
 using SewerStammGen.WPF.ViewModel.State.Navigation;
 using Shared.Contracts;
-using Shared.Domain;
+
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -25,12 +25,9 @@ namespace SewerStammGen.HostBuilders
             {
                 services.AddSingleton<IMainWindowNavigator, MainWindowNavigator>();
                 services.AddSingleton<ViewModelDelegateRenavigator<ProjektEditViewModel>>();
-               /* services.AddSingleton<IDataService<Projekt>, GenericDataService<Projekt>>();
-                services.AddSingleton<IDataService<Schacht>, GenericDataService<Schacht>>();
-                services.AddSingleton<IDataService<Kanal>, GenericDataService<Kanal>>();
-                services.AddSingleton<ISchachtDataService, SchachtDataService>();
-                services.AddSingleton<IHaltungDataService, HaltungDataService>();
-               */
+                services.AddSingleton<IProjektDataService, ProjektDataService>();
+                services.AddSingleton<IAuftraggeberDataService, AuftraggeberDataService>();
+               
                 services.AddSingleton<ISchachtService, SchachtService>();
             });
             return host;
diff --git a/SewerStammGen/HostBuilders/AddViewModelsHostBuilderExtensions.cs b/SewerStammGen/HostBuilders/AddViewModelsHostBuilderExtensions.cs
index 496ef16..eefe414 100644
--- a/SewerStammGen/HostBuilders/AddViewModelsHostBuilderExtensions.cs
+++ b/SewerStammGen/HostBuilders/AddViewModelsHostBuilderExtensions.cs
@@ -6,7 +6,6 @@ using SewerStammGen.WPF.ViewModel;
 using SewerStammGen.WPF.ViewModel.State.Navigation;
 using SewerStammGen.WPF.ViewModel.Factories;
 using Shared.Contracts;
-using Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -15,6 +14,7 @@ using System.Text;
 using System.Threading.Tasks;
 using SewerStammGen.WPF.ViewModel.State;
 using SewerStammGen.Shared.Contracts;
+using SewerStammGen.Shared.Domain;
 
 namespace SewerStammGen.HostBuilders
 {
@@ -86,7 +86,7 @@ namespace SewerStammGen.HostBuilders
                 services.AddSingleton<CreateViewModel<ProjektEditViewModel>>(services =>
                 {
                     return () => new ProjektEditViewModel(
-                        services.GetRequiredService<IDataService<Projekt>>(),
+                        services.GetRequiredService<IProjektDataService>(),
                         services.GetRequiredService<ViewModelDelegateRenavigator<ProjektListViewModel>>(),
                         services.GetRequiredService<IActualState>()
                         );
@@ -95,7 +95,7 @@ namespace SewerStammGen.HostBuilders
                 services.AddSingleton<CreateViewModel<ProjektListViewModel>>(services =>
                 {
                     return () => new ProjektListViewModel(
-                        services.GetRequiredService<IDataService<Projekt>>(),
+                        services.GetRequiredService<IProjektDataService>(),
                         services.GetRequiredService<ViewModelDelegateRenavigator<ProjektEditViewModel>>(),
                         services.GetRequiredService<IActualState>()
                         );
diff --git a/SewerStammGen/SewerStammGen.WPF.csproj b/SewerStammGen/SewerStammGen.WPF.csproj
index 1c352c6..6259f6b 100644
--- a/SewerStammGen/SewerStammGen.WPF.csproj
+++ b/SewerStammGen/SewerStammGen.WPF.csproj
@@ -19,6 +19,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\SewerStammGen.DAL\SewerStammGen.DAL.csproj" />
     <ProjectReference Include="..\Shared\SewerStammGen.Shared.csproj" />
   </ItemGroup>
 
diff --git a/SewerStammGen/ViewModel/Haltung/HaltungEditViewModel.cs b/SewerStammGen/ViewModel/Haltung/HaltungEditViewModel.cs
index 5aa7f08..cf17e07 100644
--- a/SewerStammGen/ViewModel/Haltung/HaltungEditViewModel.cs
+++ b/SewerStammGen/ViewModel/Haltung/HaltungEditViewModel.cs
@@ -1,8 +1,8 @@
 using SewerStammGen.Shared.Contracts;
+using SewerStammGen.Shared.Domain;
 using SewerStammGen.WPF.Commands;
 using SewerStammGen.WPF.ViewModel.State;
 using Shared.Contracts;
-using Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
diff --git a/SewerStammGen/ViewModel/Haltung/HaltungListViewModel.cs b/SewerStammGen/ViewModel/Haltung/HaltungListViewModel.cs
index 6799607..812e7b4 100644
--- a/SewerStammGen/ViewModel/Haltung/HaltungListViewModel.cs
+++ b/SewerStammGen/ViewModel/Haltung/HaltungListViewModel.cs
@@ -1,8 +1,8 @@
 using SewerStammGen.Shared.Contracts;
+using SewerStammGen.Shared.Domain;
 using SewerStammGen.WPF.Commands;
 using SewerStammGen.WPF.Interface.Navigator;
 using SewerStammGen.WPF.ViewModel.State;
-using Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
diff --git a/SewerStammGen/ViewModel/Projekt/ProjektEditViewModel.cs b/SewerStammGen/ViewModel/Projekt/ProjektEditViewModel.cs
index 28bff52..d2cd9eb 100644
--- a/SewerStammGen/ViewModel/Projekt/ProjektEditViewModel.cs
+++ b/SewerStammGen/ViewModel/Projekt/ProjektEditViewModel.cs
@@ -1,7 +1,7 @@
-using SewerStammGen.WPF.Interface.Navigator;
+using SewerStammGen.Shared.Domain;
+using SewerStammGen.WPF.Interface.Navigator;
 using SewerStammGen.WPF.ViewModel.State;
 using Shared.Contracts;
-using Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
diff --git a/SewerStammGen/ViewModel/Projekt/ProjektListViewModel.cs b/SewerStammGen/ViewModel/Projekt/ProjektListViewModel.cs
index 3d726ff..ec851c7 100644
--- a/SewerStammGen/ViewModel/Projekt/ProjektListViewModel.cs
+++ b/SewerStammGen/ViewModel/Projekt/ProjektListViewModel.cs
@@ -1,9 +1,10 @@
-using SewerStammGen.WPF.Commands;
+using SewerStammGen.Shared.Contracts;
+using SewerStammGen.Shared.Domain;
+using SewerStammGen.WPF.Commands;
 using SewerStammGen.WPF.Interface.Navigator;
 using SewerStammGen.WPF.ViewModel;
 using SewerStammGen.WPF.ViewModel.State;
 using Shared.Contracts;
-using Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
@@ -16,7 +17,7 @@ namespace SewerStammGen.WPF.ViewModel
 {
     public class ProjektListViewModel : BaseViewModel
     {
-        private IDataService<Projekt> genericDataService;
+        private IProjektDataService genericDataService;
         private readonly ObservableCollection<Projekt> _projekte;
         private readonly IActualState _actualState;
         public ObservableCollection<Projekt> Projekte {  get => _projekte; }
@@ -44,7 +45,7 @@ namespace SewerStammGen.WPF.ViewModel
             }
         }
 
-        public ProjektListViewModel(IDataService<Projekt> generic, IRenavigator renavigator,IActualState actualState)
+        public ProjektListViewModel(IProjektDataService generic, IRenavigator renavigator,IActualState actualState)
         {
             _projekte = new ObservableCollection<Projekt>();
             if (generic == null) throw new ArgumentNullException(nameof(generic));
diff --git a/SewerStammGen/ViewModel/Schacht/ManholeEditViewModel.cs b/SewerStammGen/ViewModel/Schacht/ManholeEditViewModel.cs
index cdc0244..d95d361 100644
--- a/SewerStammGen/ViewModel/Schacht/ManholeEditViewModel.cs
+++ b/SewerStammGen/ViewModel/Schacht/ManholeEditViewModel.cs
@@ -1,6 +1,6 @@
-using SewerStammGen.WPF.ViewModel.State;
+using SewerStammGen.Shared.Domain;
+using SewerStammGen.WPF.ViewModel.State;
 using Shared.Contracts;
-using Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/SewerStammGen/ViewModel/Schacht/ManholeListViewModel.cs b/SewerStammGen/ViewModel/Schacht/ManholeListViewModel.cs
index ed2827a..6ab6621 100644
--- a/SewerStammGen/ViewModel/Schacht/ManholeListViewModel.cs
+++ b/SewerStammGen/ViewModel/Schacht/ManholeListViewModel.cs
@@ -1,9 +1,9 @@
 using SewerStammGen.Shared.Contracts;
+using SewerStammGen.Shared.Domain;
 using SewerStammGen.WPF.Commands;
 using SewerStammGen.WPF.Interface.Navigator;
 using SewerStammGen.WPF.ViewModel.State;
 using Shared.Contracts;
-using Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
diff --git a/SewerStammGen/ViewModel/State/ActualState.cs b/SewerStammGen/ViewModel/State/ActualState.cs
index 620d54e..96a2482 100644
--- a/SewerStammGen/ViewModel/State/ActualState.cs
+++ b/SewerStammGen/ViewModel/State/ActualState.cs
@@ -1,4 +1,4 @@
-using Shared.Domain;
+using SewerStammGen.Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/SewerStammGen/ViewModel/State/IActualState.cs b/SewerStammGen/ViewModel/State/IActualState.cs
index da532ff..2a68ebd 100644
--- a/SewerStammGen/ViewModel/State/IActualState.cs
+++ b/SewerStammGen/ViewModel/State/IActualState.cs
@@ -1,4 +1,4 @@
-using Shared.Domain;
+using SewerStammGen.Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/Shared/Contracts/IAuftraggeberDataService.cs b/Shared/Contracts/IAuftraggeberDataService.cs
new file mode 100644
index 0000000..8863baa
--- /dev/null
+++ b/Shared/Contracts/IAuftraggeberDataService.cs
@@ -0,0 +1,14 @@
+using SewerStammGen.Shared.Domain;
+using Shared.Contracts;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SewerStammGen.Shared.Contracts
+{
+    public interface IAuftraggeberDataService : IDataService<Auftraggeber>
+    {
+    }
+}
diff --git a/Shared/Contracts/IProjektDataService.cs b/Shared/Contracts/IProjektDataService.cs
new file mode 100644
index 0000000..05f1fbf
--- /dev/null
+++ b/Shared/Contracts/IProjektDataService.cs
@@ -0,0 +1,15 @@
+using SewerStammGen.Shared.Domain;
+using Shared.Contracts;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SewerStammGen.Shared.Contracts
+{
+    public interface IProjektDataService : IDataService<Projekt>
+    {
+    }
+}
diff --git a/Shared/Contracts/ISchachtDataService.cs b/Shared/Contracts/ISchachtDataService.cs
index 7b599a0..484d93f 100644
--- a/Shared/Contracts/ISchachtDataService.cs
+++ b/Shared/Contracts/ISchachtDataService.cs
@@ -1,5 +1,6 @@
-using Shared.Contracts;
-using Shared.Domain;
+using SewerStammGen.Shared.Domain;
+using Shared.Contracts;
+
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/Shared/Contracts/ISchachtService.cs b/Shared/Contracts/ISchachtService.cs
index 02e3ba1..9b3b80e 100644
--- a/Shared/Contracts/ISchachtService.cs
+++ b/Shared/Contracts/ISchachtService.cs
@@ -1,4 +1,5 @@
-using Shared.Domain;
+
+using SewerStammGen.Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/Shared/Domain/Auftraggeber.cs b/Shared/Domain/Auftraggeber.cs
index 9c6a1ab..322b2fa 100644
--- a/Shared/Domain/Auftraggeber.cs
+++ b/Shared/Domain/Auftraggeber.cs
@@ -4,7 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Shared.Domain
+namespace SewerStammGen.Shared.Domain
 {
     public class Auftraggeber : DBObject
     {
diff --git a/Shared/Domain/DBObject.cs b/Shared/Domain/DBObject.cs
index ac26a6e..7781dd5 100644
--- a/Shared/Domain/DBObject.cs
+++ b/Shared/Domain/DBObject.cs
@@ -4,7 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Shared.Domain
+namespace SewerStammGen.Shared.Domain
 {
     public class DBObject
     {
diff --git a/Shared/Domain/Kanal.cs b/Shared/Domain/Kanal.cs
index c78b1d6..de27b6a 100644
--- a/Shared/Domain/Kanal.cs
+++ b/Shared/Domain/Kanal.cs
@@ -4,7 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Shared.Domain
+namespace SewerStammGen.Shared.Domain
 {
     public class Kanal : DBObject
     {
diff --git a/Shared/Domain/Projekt.cs b/Shared/Domain/Projekt.cs
index 3f7b149..95a3069 100644
--- a/Shared/Domain/Projekt.cs
+++ b/Shared/Domain/Projekt.cs
@@ -1,11 +1,12 @@
-using Shared.Enum;
+
+using SewerStammGen.Shared.Enum;
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Shared.Domain
+namespace SewerStammGen.Shared.Domain
 {
     public class Projekt : DBObject
     {
diff --git a/Shared/Domain/Schacht.cs b/Shared/Domain/Schacht.cs
index 51392c5..5e602d1 100644
--- a/Shared/Domain/Schacht.cs
+++ b/Shared/Domain/Schacht.cs
@@ -5,7 +5,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Shared.Domain
+namespace SewerStammGen.Shared.Domain
 {
     public class Schacht : DBObject
     {
diff --git a/Shared/Enum/EExportType.cs b/Shared/Enum/EExportType.cs
index 64e31e2..57679fd 100644
--- a/Shared/Enum/EExportType.cs
+++ b/Shared/Enum/EExportType.cs
@@ -4,7 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Shared.Enum
+namespace SewerStammGen.Shared.Enum
 {
     public enum EExportType
     {
diff --git a/Shared/Enum/EKodierungssystem.cs b/Shared/Enum/EKodierungssystem.cs
index ea5bc24..92102fb 100644
--- a/Shared/Enum/EKodierungssystem.cs
+++ b/Shared/Enum/EKodierungssystem.cs
@@ -4,7 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Shared.Enum
+namespace SewerStammGen.Shared.Enum
 {
     public enum EKodierungssystem
     {
diff --git a/Shared/Services/SchachtService.cs b/Shared/Services/SchachtService.cs
index 7d6e4ac..23e0ba9 100644
--- a/Shared/Services/SchachtService.cs
+++ b/Shared/Services/SchachtService.cs
@@ -1,6 +1,6 @@
 using SewerStammGen.Shared.Contracts;
+using SewerStammGen.Shared.Domain;
 using Shared.Contracts;
-using Shared.Domain;
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/Stammdatengenerator.sln b/Stammdatengenerator.sln
index 0e86db9..4b1a21c 100644
--- a/Stammdatengenerator.sln
+++ b/Stammdatengenerator.sln
@@ -7,6 +7,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SewerStammGen.WPF", "SewerS
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SewerStammGen.Shared", "Shared\SewerStammGen.Shared.csproj", "{3A47BD31-36C2-45C4-9609-D0D9D92A993B}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SewerStammGen.DAL", "SewerStammGen.DAL\SewerStammGen.DAL.csproj", "{7D983D7C-84C2-4FD8-B2CE-B13529036CB5}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SewerStammGen.ConsoleApp", "SewerStammGen.ConsoleApp\SewerStammGen.ConsoleApp.csproj", "{774EB800-0C5B-4047-A02D-DB4F1BA58167}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -21,6 +25,14 @@ Global
 		{3A47BD31-36C2-45C4-9609-D0D9D92A993B}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{3A47BD31-36C2-45C4-9609-D0D9D92A993B}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{3A47BD31-36C2-45C4-9609-D0D9D92A993B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{7D983D7C-84C2-4FD8-B2CE-B13529036CB5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{7D983D7C-84C2-4FD8-B2CE-B13529036CB5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{7D983D7C-84C2-4FD8-B2CE-B13529036CB5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{7D983D7C-84C2-4FD8-B2CE-B13529036CB5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{774EB800-0C5B-4047-A02D-DB4F1BA58167}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{774EB800-0C5B-4047-A02D-DB4F1BA58167}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{774EB800-0C5B-4047-A02D-DB4F1BA58167}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{774EB800-0C5B-4047-A02D-DB4F1BA58167}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE