Looks like data models done

PersonnelDepartment/PersonnelDepartment.sln

@@ -5,6 +5,8 @@ VisualStudioVersion = 17.9.34723.18
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PersonnelDepartmentView", "PersonnelDepartmentView\PersonnelDepartmentView.csproj", "{353F1467-69E0-4C42-85B0-BC4D3C5FC5A6}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PersonnelDepartmentDataModels", "PersonnelDepartmentDataModels\PersonnelDepartmentDataModels.csproj", "{CE6C1F1A-D6DB-4AA1-9F79-5A8CCB1C812C}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,6 +17,10 @@ Global
 		{353F1467-69E0-4C42-85B0-BC4D3C5FC5A6}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{353F1467-69E0-4C42-85B0-BC4D3C5FC5A6}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{353F1467-69E0-4C42-85B0-BC4D3C5FC5A6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{CE6C1F1A-D6DB-4AA1-9F79-5A8CCB1C812C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CE6C1F1A-D6DB-4AA1-9F79-5A8CCB1C812C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CE6C1F1A-D6DB-4AA1-9F79-5A8CCB1C812C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CE6C1F1A-D6DB-4AA1-9F79-5A8CCB1C812C}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

PersonnelDepartment/PersonnelDepartmentDataModels/IId.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PersonnelDepartmentDataModels
+{
+	public interface IId
+	{
+		int Id { get; }
+	}
+}

PersonnelDepartment/PersonnelDepartmentDataModels/Models/IDealModel.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PersonnelDepartmentDataModels.Models
+{
+	public interface IDealModel : IId
+	{
+		DateTime DateFrom { get; }
+		DateTime DateTo { get; }
+		int PositionId { get; }
+		int EmployeeId { get; }
+		int DepartmentId { get; }
+		int TypeId { get; }
+	}
+}

PersonnelDepartment/PersonnelDepartmentDataModels/Models/IDepartmentModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PersonnelDepartmentDataModels.Models
+{
+	public interface IDepartmentModel : IId
+	{
+		string Name { get; }
+		long Telephone { get; }
+	}
+}

PersonnelDepartment/PersonnelDepartmentDataModels/Models/IEmployeeModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PersonnelDepartmentDataModels.Models
+{
+	public interface IEmployeeModel : IId
+	{
+		string FirstName { get; }
+		string LastName { get; }
+		string Patronymic { get; }
+	}
+}

PersonnelDepartment/PersonnelDepartmentDataModels/Models/IPositionModel.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PersonnelDepartmentDataModels.Models
+{
+	public interface IPositionModel : IId
+	{
+		string Name { get; }
+	}
+}

PersonnelDepartment/PersonnelDepartmentDataModels/Models/ITypeModel.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PersonnelDepartmentDataModels.Models
+{
+	public interface ITypeModel : IId
+	{
+		string Name { get; }
+	}
+}

PersonnelDepartment/PersonnelDepartmentDataModels/PersonnelDepartmentDataModels.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>