diff --git a/VeterinaryView/VeterinaryBusinessLogic/BusinessLogic/OwnerLogic.cs b/VeterinaryView/VeterinaryBusinessLogic/BusinessLogic/OwnerLogic.cs
index e741d1e..31f8617 100644
--- a/VeterinaryView/VeterinaryBusinessLogic/BusinessLogic/OwnerLogic.cs
+++ b/VeterinaryView/VeterinaryBusinessLogic/BusinessLogic/OwnerLogic.cs
@@ -92,7 +92,7 @@ namespace VeterinaryBusinessLogic.BusinessLogic
 			}
 			if (string.IsNullOrEmpty(model.Login))
 			{
-				throw new ArgumentNullException("Нет Email клиента",
+				throw new ArgumentNullException("Нет Login клиента",
 			   nameof(model.Login));
 			}
 			if (string.IsNullOrEmpty(model.Password))
diff --git a/VeterinaryView/VeterinaryDatabaseImplement/Models/Doctor.cs b/VeterinaryView/VeterinaryDatabaseImplement/Models/Doctor.cs
new file mode 100644
index 0000000..de79787
--- /dev/null
+++ b/VeterinaryView/VeterinaryDatabaseImplement/Models/Doctor.cs
@@ -0,0 +1,71 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using VeterinaryDataModels;
+using VeterinaryContracts.BindingModels;
+using VeterinaryContracts.ViewModels;
+
+namespace VeterinaryDatabaseImplement.Models
+{
+	public class Doctor : IDoctorModel
+	{
+		public int Id { get; private set; }
+		[Required]
+		public string DoctorFIO { get; private set; } = string.Empty;
+		[Required]
+		public string Login { get; set; } = string.Empty;
+		[Required]
+		public string Password { get; set; } = string.Empty;
+		[ForeignKey("DoctorId")]
+		public virtual List<Service> Services { get; set; } = new();
+		[ForeignKey("DoctorId")]
+		public virtual List<Medication> Medications { get; set; } = new();
+		[ForeignKey("DoctorId")]
+		public virtual List<Visit> Visits { get; set; } = new();
+		public static Doctor? Create(DoctorBindingModel model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new Doctor()
+			{
+				Id = model.Id,
+				DoctorFIO = model.DoctorFIO,
+				Login = model.Login,
+				Password = model.Password
+			};
+		}
+		public static Doctor Create(DoctorViewModel model)
+		{
+			return new Doctor()
+			{
+				Id = model.Id,
+				DoctorFIO = model.DoctorFIO,
+				Login = model.Login,
+				Password = model.Password
+			};
+		}
+		public void Update(DoctorBindingModel model)
+		{
+			if (model == null)
+			{
+				return;
+			}
+			DoctorFIO = model.DoctorFIO;
+			Login = model.Login;
+			Password = model.Password;
+		}
+		public DoctorViewModel GetViewModel => new()
+		{
+			Id = Id,
+			DoctorFIO = DoctorFIO,
+			Login = Login,
+			Password = Password
+		};
+	}
+}
diff --git a/VeterinaryView/VeterinaryDatabaseImplement/Models/Drug.cs b/VeterinaryView/VeterinaryDatabaseImplement/Models/Drug.cs
new file mode 100644
index 0000000..fd6faf0
--- /dev/null
+++ b/VeterinaryView/VeterinaryDatabaseImplement/Models/Drug.cs
@@ -0,0 +1,99 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using VeterinaryDataModels;
+using VeterinaryContracts.BindingModels;
+using VeterinaryContracts.ViewModels;
+
+namespace VeterinaryDatabaseImplement.Models
+{
+	public class Drug : IDrugModel
+	{
+		public int Id { get; set; }
+		[Required]
+		public string DrugName { get; set; } = string.Empty;
+		[Required]
+		public double Price { get; set; }
+		[Required]
+		public int Count { get; set; }
+		private Dictionary<int, (IMedicationModel, int)>? _drugMedications = null;
+		[NotMapped]
+		public Dictionary<int, (IMedicationModel, int)> DrugMedications
+		{
+			get
+			{
+				if (_drugMedications == null)
+				{
+					_drugMedications = Medications
+					.ToDictionary(recPC => recPC.MedicationId, recPC =>
+				   (recPC.Medication as IMedicationModel, recPC.Count));
+				}
+				return _drugMedications;
+			}
+		}
+		[ForeignKey("DrugId")]
+		public virtual List<DrugMedication> Medications { get; set; } = new();
+		[ForeignKey("DrugId")]
+		public virtual List<Purchase> Purchases { get; set; } = new();
+		public static Drug Create(VeterinaryDataBase context, DrugBindingModel model)
+		{
+			return new Drug()
+			{
+				Id = model.Id,
+				DrugName = model.DrugName,
+				Price = model.Price,
+				Count = model.Count,
+				Medications = model.DrugMedications.Select(x => new DrugMedication
+				{
+					Medication = context.Medications.First(y => y.Id == x.Key),
+					Count = x.Value.Item2
+				}).ToList()
+			};
+		}
+		public void Update(DrugBindingModel model)
+		{
+			DrugName = model.DrugName;
+			Price = model.Price;
+		}
+		public DrugViewModel GetViewModel => new()
+		{
+			Id = Id,
+			DrugName = DrugName,
+			Price = Price,
+			DrugMedications = DrugMedications
+		};
+		public void UpdateMedications(VeterinaryDataBase context, DrugBindingModel model)
+		{
+			var drugMedications = context.DrugMedications.Where(rec => rec.DrugId == model.Id).ToList();
+			if (drugMedications != null && drugMedications.Count > 0)
+			{
+				context.DrugMedications.RemoveRange(drugMedications.Where(rec => !model.DrugMedications.ContainsKey(rec.MedicationId)));
+				context.SaveChanges();
+				foreach (var updateMedication in drugMedications)
+				{
+					updateMedication.Count =
+					model.DrugMedications[updateMedication.MedicationId].Item2;
+					model.DrugMedications.Remove(updateMedication.MedicationId);
+				}
+				context.SaveChanges();
+			}
+			var drug = context.Drugs.First(x => x.Id == Id);
+			foreach (var pc in model.DrugMedications)
+			{
+				context.DrugMedications.Add(new DrugMedication
+				{
+					Drug = drug,
+					Medication = context.Medications.First(x => x.Id == pc.Key),
+					Count = pc.Value.Item2
+				});
+				context.SaveChanges();
+			}
+			_drugMedications = null;
+		}
+
+	}
+}
diff --git a/VeterinaryView/VeterinaryDatabaseImplement/Models/DrugMedication.cs b/VeterinaryView/VeterinaryDatabaseImplement/Models/DrugMedication.cs
new file mode 100644
index 0000000..bf2c99d
--- /dev/null
+++ b/VeterinaryView/VeterinaryDatabaseImplement/Models/DrugMedication.cs
@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace VeterinaryDatabaseImplement.Models
+{
+	public class DrugMedication
+	{
+		public int Id { get; set; }
+		[Required]
+		public int DrugId { get; set; }
+		[Required]
+		public int MedicationId { get; set; }
+		[Required]
+		public int Count { get; set; }
+		public virtual Medication Medication { get; set; } = new();
+		public virtual Drug Drug { get; set; } = new();
+	}
+}
diff --git a/VeterinaryView/VeterinaryDatabaseImplement/Models/Medication.cs b/VeterinaryView/VeterinaryDatabaseImplement/Models/Medication.cs
new file mode 100644
index 0000000..415fc81
--- /dev/null
+++ b/VeterinaryView/VeterinaryDatabaseImplement/Models/Medication.cs
@@ -0,0 +1,70 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using VeterinaryDataModels;
+using VeterinaryContracts.BindingModels;
+using VeterinaryContracts.ViewModels;
+
+namespace VeterinaryDatabaseImplement.Models
+{
+	public class Medication : IMedicationModel
+	{
+		public int Id { get; private set; }
+		[Required]
+		public string MedicationName { get; private set; } = string.Empty;
+		[Required]
+		public double Price { get; set; }
+		[Required]
+		public int DoctorId { get; private set; }
+		[ForeignKey("MedicationId")]
+		public virtual List<ServiceMedication> ServiceMedications { get; set; } = new();
+		[ForeignKey("MedicationId")]
+		public virtual List<DrugMedication> DrugMedications { get; set; } = new();
+		
+		public static Medication? Create(MedicationBindingModel model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new Medication()
+			{
+				Id = model.Id,
+				MedicationName = model.MedicationName,
+				DoctorId = model.DoctorId,
+				Price = model.Price
+			};
+		}
+		public static Medication Create(MedicationViewModel model)
+		{
+			return new Medication
+			{
+				Id = model.Id,
+				MedicationName = model.MedicationName,
+				DoctorId = model.DoctorId,
+				Price = model.Price
+			};
+		}
+		public void Update(MedicationBindingModel model)
+		{
+			if (model == null)
+			{
+				return;
+			}
+			MedicationName = model.MedicationName;
+			Price = model.Price;
+		}
+		public MedicationViewModel GetViewModel => new()
+		{
+			Id = Id,
+			MedicationName = MedicationName,
+			Price = Price,
+			DoctorId = DoctorId
+		};
+	}
+}
diff --git a/VeterinaryView/VeterinaryDatabaseImplement/Models/Service.cs b/VeterinaryView/VeterinaryDatabaseImplement/Models/Service.cs
new file mode 100644
index 0000000..60c4938
--- /dev/null
+++ b/VeterinaryView/VeterinaryDatabaseImplement/Models/Service.cs
@@ -0,0 +1,100 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using VeterinaryDataModels;
+using VeterinaryContracts.BindingModels;
+using VeterinaryContracts.ViewModels;
+
+namespace VeterinaryDatabaseImplement.Models
+{
+	public class Service : IServiceModel
+	{
+		public int Id { get; set; }
+		[Required]
+		public string ServiceName { get; set; } = string.Empty;
+		[Required]
+		public int DoctorId { get; private set; }
+		[Required]
+		public int VisitId { get; private set; }
+		public virtual Doctor? Doctor { get; private set; }
+		private Dictionary<int, (IMedicationModel, int)>? _serviceMedications = null;
+		[NotMapped]
+		public Dictionary<int, (IMedicationModel, int)> ServiceMedications
+		{
+			get
+			{
+				if (_serviceMedications == null)
+				{
+					_serviceMedications = Medications
+					.ToDictionary(recPC => recPC.MedicationId, recPC =>
+				   (recPC.Medication as IMedicationModel, recPC.Count));
+				}
+				return _serviceMedications;
+			}
+		}
+		[ForeignKey("ServiceId")]
+		public virtual List<ServiceMedication> Medications { get; set; } = new();
+		public static Service Create(VeterinaryDataBase context, ServiceBindingModel model)
+		{
+			return new Service()
+			{
+				Id = model.Id,
+				ServiceName = model.ServiceName,
+				DoctorId = model.DoctorId,
+				VisitId = model.VisitId,
+				Medications = model.ServiceMedications.Select(x => new ServiceMedication
+				{
+					Medication = context.Medications.First(y => y.Id == x.Key),
+					Count = x.Value.Item2
+				}).ToList()
+			};
+		}
+		public void Update(ServiceBindingModel model)
+		{
+			ServiceName = model.ServiceName;
+		}
+		public ServiceViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ServiceName = ServiceName,
+			DoctorId = DoctorId,
+			VisitId = VisitId,
+			ServiceMedications = ServiceMedications
+		};
+
+		public void UpdateMedications(VeterinaryDataBase context, ServiceBindingModel model)
+		{
+			var serviceMedications = context.ServiceMedications.Where(rec => rec.ServiceId == model.Id).ToList();
+			if (serviceMedications != null && serviceMedications.Count > 0)
+			{
+				context.ServiceMedications.RemoveRange(serviceMedications.Where(rec => !model.ServiceMedications.ContainsKey(rec.MedicationId)));
+				context.SaveChanges();
+				foreach (var updateMedication in serviceMedications)
+				{
+					updateMedication.Count =
+					model.ServiceMedications[updateMedication.MedicationId].Item2;
+					model.ServiceMedications.Remove(updateMedication.MedicationId);
+				}
+				context.SaveChanges();
+			}
+			var service = context.Services.First(x => x.Id == Id);
+			foreach (var pc in model.ServiceMedications)
+			{
+				context.ServiceMedications.Add(new ServiceMedication
+				{
+					Service = service,
+					Medication = context.Medications.First(x => x.Id == pc.Key),
+					Count = pc.Value.Item2
+				});
+				context.SaveChanges();
+			}
+			_serviceMedications = null;
+		}
+
+	}
+}
diff --git a/VeterinaryView/VeterinaryDatabaseImplement/Models/ServiceMedication.cs b/VeterinaryView/VeterinaryDatabaseImplement/Models/ServiceMedication.cs
new file mode 100644
index 0000000..94f6f05
--- /dev/null
+++ b/VeterinaryView/VeterinaryDatabaseImplement/Models/ServiceMedication.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace VeterinaryDatabaseImplement.Models
+{
+	public class ServiceMedication
+	{
+		public int Id { get; set; }
+		[Required]
+		public int ServiceId { get; set; }
+		[Required]
+		public int MedicationId { get; set; }
+		[Required]
+		public int Count { get; set; }
+		public virtual Medication Medication { get; set; } = new();
+		public virtual Service Service { get; set; } = new();
+	}
+}
diff --git a/VeterinaryView/VeterinaryDatabaseImplement/VeterinaryDatabaseImplement.csproj b/VeterinaryView/VeterinaryDatabaseImplement/VeterinaryDatabaseImplement.csproj
index 1d0ecbf..ad320eb 100644
--- a/VeterinaryView/VeterinaryDatabaseImplement/VeterinaryDatabaseImplement.csproj
+++ b/VeterinaryView/VeterinaryDatabaseImplement/VeterinaryDatabaseImplement.csproj
@@ -12,7 +12,6 @@
   </ItemGroup>
 
   <ItemGroup>
-    <Folder Include="Models\" />
     <Folder Include="Implements\" />
   </ItemGroup>