diff --git a/EHEC_Server_db first/EHEC_Server/Doctor.cs b/EHEC_Server_db first/EHEC_Server/Doctor.cs
index 6d94408..23b5ba8 100644
--- a/EHEC_Server_db first/EHEC_Server/Doctor.cs	
+++ b/EHEC_Server_db first/EHEC_Server/Doctor.cs	
@@ -19,7 +19,6 @@ namespace EHEC_Server
         {
             this.Exam = new HashSet<Exam>();
         }
-    
         public int DoctorId { get; set; }
         public string FirstName { get; set; }
         public string LastName { get; set; }
@@ -27,5 +26,15 @@ namespace EHEC_Server
     
         [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
         public virtual ICollection<Exam> Exam { get; set; }
+
+
+        internal void CreateDoctor(Doctor doctor)
+        {
+            throw new NotImplementedException();
+        }
+        internal List<Doctor> GetAllDoctors()
+        {
+            throw new NotImplementedException();
+        }
     }
 }
diff --git a/EHEC_Server_db first/EHEC_Server/Exam.cs b/EHEC_Server_db first/EHEC_Server/Exam.cs
index ccf78db..fdf2e7d 100644
--- a/EHEC_Server_db first/EHEC_Server/Exam.cs	
+++ b/EHEC_Server_db first/EHEC_Server/Exam.cs	
@@ -26,5 +26,10 @@ namespace EHEC_Server
         public virtual Origin Origin { get; set; }
         public virtual Patient Patient { get; set; }
         public virtual Result Result { get; set; }
+
+        internal void CreateExam(Exam exam)
+        {
+            throw new NotImplementedException();
+        }
     }
 }
diff --git a/EHEC_Server_db first/EHEC_Server/IService.cs b/EHEC_Server_db first/EHEC_Server/IService.cs
index 5d45d60..8de05a4 100644
--- a/EHEC_Server_db first/EHEC_Server/IService.cs	
+++ b/EHEC_Server_db first/EHEC_Server/IService.cs	
@@ -12,6 +12,20 @@ namespace EHEC_Server
     public interface IService
     {
         [OperationContract]
-        void DoWork();
+        void WriteDoctor(Doctor doctor);
+
+        [OperationContract]
+        void WritePatient(Patient patient);
+
+        [OperationContract]
+        void WriteOrigin(Origin origin);
+
+        [OperationContract]
+        void WriteExam(Exam exam);
+
+        [OperationContract]
+        void WriteResult(Result result);
+
+
     }
 }
diff --git a/EHEC_Server_db first/EHEC_Server/Origin.cs b/EHEC_Server_db first/EHEC_Server/Origin.cs
index dd9d763..a2671fe 100644
--- a/EHEC_Server_db first/EHEC_Server/Origin.cs	
+++ b/EHEC_Server_db first/EHEC_Server/Origin.cs	
@@ -28,5 +28,10 @@ namespace EHEC_Server
     
         [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
         public virtual ICollection<Exam> Exam { get; set; }
+
+        internal void CreateOrigin(Origin origin)
+        {
+            throw new NotImplementedException();
+        }
     }
 }
diff --git a/EHEC_Server_db first/EHEC_Server/Patient.cs b/EHEC_Server_db first/EHEC_Server/Patient.cs
index 2436752..98bbccd 100644
--- a/EHEC_Server_db first/EHEC_Server/Patient.cs	
+++ b/EHEC_Server_db first/EHEC_Server/Patient.cs	
@@ -19,7 +19,7 @@ namespace EHEC_Server
         {
             this.Exam = new HashSet<Exam>();
         }
-    
+
         public int PatientId { get; set; }
         public string FirstName { get; set; }
         public string LastName { get; set; }
@@ -29,5 +29,16 @@ namespace EHEC_Server
     
         [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
         public virtual ICollection<Exam> Exam { get; set; }
+
+
+        internal void CreatePatient(Patient patient)
+        {
+            throw new NotImplementedException();
+        }
+
+        internal List<Patient> GetAllPatients()
+        {
+            throw new NotImplementedException();
+        }
     }
 }
diff --git a/EHEC_Server_db first/EHEC_Server/Result.cs b/EHEC_Server_db first/EHEC_Server/Result.cs
index 656d74d..ae9cc86 100644
--- a/EHEC_Server_db first/EHEC_Server/Result.cs	
+++ b/EHEC_Server_db first/EHEC_Server/Result.cs	
@@ -26,5 +26,10 @@ namespace EHEC_Server
     
         [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
         public virtual ICollection<Exam> Exam { get; set; }
+
+        internal void CreateResult(Result result)
+        {
+            throw new NotImplementedException();
+        }
     }
 }
diff --git a/EHEC_Server_db first/EHEC_Server/Service.svc.cs b/EHEC_Server_db first/EHEC_Server/Service.svc.cs
index 62b49c6..3cc96ff 100644
--- a/EHEC_Server_db first/EHEC_Server/Service.svc.cs	
+++ b/EHEC_Server_db first/EHEC_Server/Service.svc.cs	
@@ -11,8 +11,46 @@ namespace EHEC_Server
     // NOTE: In order to launch WCF Test Client for testing this service, please select Service.svc or Service.svc.cs at the Solution Explorer and start debugging.
     public class Service : IService
     {
-        public void DoWork()
+       public List<Doctor> GetDoctors()
         {
+            Doctor dataaccess = new Doctor();
+            return dataaccess.GetAllDoctors();
+        }
+
+        public List<Patient> GetPatients()
+        {
+            Patient dataaccess = new Patient();
+            return dataaccess.GetAllPatients();
+        }
+
+        public void WriteDoctor(Doctor doctor)
+        {
+            Doctor dataaccess = new Doctor();
+            dataaccess.CreateDoctor(doctor);
+        }
+
+        public void WritePatient(Patient patient)
+        {
+            Patient dataaccess = new Patient();
+            dataaccess.CreatePatient(patient);
+        }
+
+        public void WriteOrigin(Origin origin)
+        {
+            Origin dataaccess = new Origin();
+            dataaccess.CreateOrigin(origin);
+        }
+
+        public void WriteExam(Exam exam)
+        {
+            Exam dataaccess = new Exam();
+            dataaccess.CreateExam(exam);
+        }
+
+        public void WriteResult(Result result)
+        {
+            Result dataaccess = new Result();
+            dataaccess.CreateResult(result);
         }
     }
 }