diff --git a/LoggingClient/LoggingClient/LoggingClient.csproj b/LoggingClient/LoggingClient/LoggingClient.csproj
index 9ca6f56..1469bdf 100644
--- a/LoggingClient/LoggingClient/LoggingClient.csproj
+++ b/LoggingClient/LoggingClient/LoggingClient.csproj
@@ -84,6 +84,7 @@
     <Compile Include="Model\Node.cs" />
     <Compile Include="Model\SeverityComboBoxItem.cs" />
     <Compile Include="Repository\CustomerRepository.cs" />
+    <Compile Include="Repository\CustomerRepositoryEF.cs" />
     <Compile Include="Repository\IRepositoryBase.cs" />
     <Compile Include="Repository\LocationRepository.cs" />
     <Compile Include="Repository\LoggingRepository.cs" />
diff --git a/LoggingClient/LoggingClient/Repository/CustomerRepositoryEF.cs b/LoggingClient/LoggingClient/Repository/CustomerRepositoryEF.cs
new file mode 100755
index 0000000..aac45a2
--- /dev/null
+++ b/LoggingClient/LoggingClient/Repository/CustomerRepositoryEF.cs
@@ -0,0 +1,60 @@
+using LoggingClient.Model;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace LoggingClient.Repository
+{
+    public class CustomerRepositoryEF : RepositoryBase<Customer>
+    {
+        public CustomerRepositoryEF(string connectionString) : base(connectionString)
+        {
+            Customers = new List<Customer>();
+        }
+        public List<Customer> Customers { get; set; }
+        public override string TableName => throw new NotImplementedException();
+
+        public override string ColumnsForSelect => throw new NotImplementedException();
+
+        public override string ColumnsForAdd => throw new NotImplementedException();
+
+        public override string PrimaryKeyFromTable => throw new NotImplementedException();
+
+        public override void Add(Customer entity)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void CallStoredProcedure(Customer entity)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void Delete(Customer entity)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override List<Customer> GetAll(string whereCondition, Dictionary<string, object> parameterValues)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override List<Customer> GetAll()
+        {
+            throw new NotImplementedException();
+        }
+
+        public override Customer GetSingle<P>(P pkValue)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void Update(Customer entity)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}
diff --git a/LoggingClient/LoggingClient/ViewModel/CustomerViewModel.cs b/LoggingClient/LoggingClient/ViewModel/CustomerViewModel.cs
index 3c4c93d..d56b17e 100755
--- a/LoggingClient/LoggingClient/ViewModel/CustomerViewModel.cs
+++ b/LoggingClient/LoggingClient/ViewModel/CustomerViewModel.cs
@@ -34,6 +34,29 @@ namespace LoggingClient.ViewModel
         private List<Customer> _customers;
         public Customer NewCustomerEntry { get; set; }
 
+        private bool _EfIsChecked;
+        private bool _LinqIsChecked;
+
+        public bool EfIsChecked
+        {
+            get { return _EfIsChecked; }
+            set
+            {
+                _EfIsChecked = value;
+                OnPropertyChanged(nameof(EfIsChecked));
+            }
+        }
+
+        public bool LinqIsChecked
+        {
+            get { return _LinqIsChecked; }
+            set
+            {
+                _LinqIsChecked = value;
+                OnPropertyChanged(nameof(LinqIsChecked));
+            }
+        }
+
         public CustomerViewModel()
         {
             TxtConnectionString = "Server=localhost;Database=inventarisierungsloesung;Uid=root;Pwd=MySQLPassword1234!;";
@@ -120,28 +143,76 @@ namespace LoggingClient.ViewModel
         }
         private void LoadData()
         {
-            try
+            if (_EfIsChecked)
             {
-                var customerModelRepository = new CustomerRepository(TxtConnectionString);
-                this.Customers = customerModelRepository.GetAll().ToList();
-                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("LocationTree"));
+
+                try
+                {
+                    var customerModelRepository = new CustomerRepositoryEF(TxtConnectionString);
+                    this.Customers = customerModelRepository.GetAll().ToList();
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show("Error occurred: " + ex.Message);
+                }
             }
-            catch (Exception ex)
+            if (_LinqIsChecked)
             {
-                MessageBox.Show("Error occurred: " + ex.Message);
+                //TODO
+            }
+            else
+            {
+                try
+                {
+                    var customerModelRepository = new CustomerRepository(TxtConnectionString);
+                    this.Customers = customerModelRepository.GetAll().ToList();
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show("Error occurred: " + ex.Message);
+                }
             }
         }
         private void AddData()
         {
-            try
+            if (_EfIsChecked)
             {
-                var customerModelRepository = new CustomerRepository(TxtConnectionString);
-                customerModelRepository.Add(this.NewCustomerEntry);
-                this.Customers = customerModelRepository.GetAll().ToList();
+                try
+                {
+                    var customerModelRepository = new CustomerRepositoryEF(TxtConnectionString);
+                    customerModelRepository.Add(this.NewCustomerEntry);
+                    this.Customers = customerModelRepository.GetAll().ToList();
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show("Error occurred: " + ex.Message);
+                }
             }
-            catch (Exception ex)
+            if (_LinqIsChecked)
             {
-                MessageBox.Show("Error occurred: " + ex.Message);
+                try
+                {
+                    var customerModelRepository = new CustomerRepository(TxtConnectionString);
+                    customerModelRepository.Add(this.NewCustomerEntry);
+                    this.Customers = customerModelRepository.GetAll().ToList();
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show("Error occurred: " + ex.Message);
+                }
+            }
+            else
+            {
+                try
+                {
+                    var customerModelRepository = new CustomerRepository(TxtConnectionString);
+                    customerModelRepository.Add(this.NewCustomerEntry);
+                    this.Customers = customerModelRepository.GetAll().ToList();
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show("Error occurred: " + ex.Message);
+                }
             }
         }
         private void DeleteData()
diff --git a/LoggingClient/LoggingClient/Views/CustomerView.xaml b/LoggingClient/LoggingClient/Views/CustomerView.xaml
index 2d71fc1..1ae7aec 100755
--- a/LoggingClient/LoggingClient/Views/CustomerView.xaml
+++ b/LoggingClient/LoggingClient/Views/CustomerView.xaml
@@ -149,7 +149,10 @@
             <Label Content="CustomerAccNr" HorizontalAlignment="Left" Margin="10,346,0,0" VerticalAlignment="Top" Width="95"/>
             <Label Content="Phone" HorizontalAlignment="Left" Margin="110,346,0,0" VerticalAlignment="Top" Width="95"/>
             <Label Content="Email" HorizontalAlignment="Left" Margin="210,346,0,0" VerticalAlignment="Top" Width="95"/>
-            <Label Content="Password" HorizontalAlignment="Left" Margin="310,347,0,0" VerticalAlignment="Top" Width="95"/>
+            <Label Content="Password" HorizontalAlignment="Left" Margin="310,347,0,0" VerticalAlignment="Top" Width="95"/>
+            <Label Content="Select Strategy for SQL" HorizontalAlignment="Left" Margin="508,290,0,0" VerticalAlignment="Top" Width="175"/>
+            <RadioButton Content="EF" IsChecked="{Binding EfIsChecked}" HorizontalAlignment="Left" Margin="508,341,0,0" VerticalAlignment="Top"/>
+            <RadioButton Content="LINQ" IsChecked="{Binding LinqIsChecked}" HorizontalAlignment="Left" Margin="508,321,0,0" VerticalAlignment="Top"/>
         </Grid>
     </Grid>
 </UserControl>
\ No newline at end of file