diff --git a/ProtRPP/DataModels/Models/ITask.cs b/ProtRPP/DataModels/Models/ITask.cs
index 61078b8..1bb2027 100644
--- a/ProtRPP/DataModels/Models/ITask.cs
+++ b/ProtRPP/DataModels/Models/ITask.cs
@@ -11,7 +11,7 @@ namespace SchoolAgainStudyDataModels.Models
         string Title { get;}
         DateTime DateIssue { get;}
         DateTime DateDelivery { get;}
-        int TeacherID { get; }
+        int TeacherId { get; }
         Dictionary<int, IMaterial> TaskMaterials { get; }
     }
 }
diff --git a/ProtRPP/SchoolAgainStudyContracts/BindingModel/TaskBindingModel.cs b/ProtRPP/SchoolAgainStudyContracts/BindingModel/TaskBindingModel.cs
index 5c7963c..b543652 100644
--- a/ProtRPP/SchoolAgainStudyContracts/BindingModel/TaskBindingModel.cs
+++ b/ProtRPP/SchoolAgainStudyContracts/BindingModel/TaskBindingModel.cs
@@ -15,7 +15,7 @@ namespace SchoolAgainStudyContracts.BindingModel
 
         public DateTime DateDelivery { get; set; }
 
-        public int TeacherID { get; set; }  
+        public int TeacherId { get; set; }  
 
         public Dictionary<int, IMaterial> TaskMaterials { get; set; } = new();
 
diff --git a/ProtRPP/SchoolAgainStudyContracts/ViewModel/TaskViewModel.cs b/ProtRPP/SchoolAgainStudyContracts/ViewModel/TaskViewModel.cs
index 6ce5700..bfb9bba 100644
--- a/ProtRPP/SchoolAgainStudyContracts/ViewModel/TaskViewModel.cs
+++ b/ProtRPP/SchoolAgainStudyContracts/ViewModel/TaskViewModel.cs
@@ -17,7 +17,7 @@ namespace SchoolAgainStudyContracts.ViewModel
         [DisplayName("Дата сдачи")]
         public DateTime DateDelivery { get; set; } 
 
-        public int TeacherID { get; set; }  
+        public int TeacherId { get; set; }  
 
         public Dictionary<int, IMaterial> TaskMaterials { get; set; } = new();
         [DisplayName("Номер")]
diff --git a/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Diy.cs b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Diy.cs
index 5dfe5f0..3a74596 100644
--- a/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Diy.cs
+++ b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Diy.cs
@@ -24,6 +24,7 @@ namespace SchoolAgainStudyDataBaseImplements.Models
         [Required]
         public int TaskId { get; set; }
         public string TaskName { get; set; } = string.Empty;
+        public virtual Task task { get; set; }
         public int StudentId { get; set; }
         private Dictionary<int, IInterest>? _DiyInterests = null;
         [NotMapped]
@@ -46,9 +47,9 @@ namespace SchoolAgainStudyDataBaseImplements.Models
         {
             return new Diy()
             {
-                Id = model.Id,
-                Title = model.Title,
-                Description = model.Description,
+               Id = model.Id,
+               Title = model.Title,
+               Description = model.Description,
                DateCreate = model.DateCreate,
                TaskId = model.TaskId,
                TaskName = model.TaskName,
@@ -64,6 +65,7 @@ namespace SchoolAgainStudyDataBaseImplements.Models
         {
             Title = model.Title;
             Description = model.Description;
+            DateCreate = model.DateCreate;
         }
 
         public DiyViewModel GetViewModel => new()
diff --git a/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Lesson.cs b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Lesson.cs
new file mode 100644
index 0000000..245a50e
--- /dev/null
+++ b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Lesson.cs
@@ -0,0 +1,106 @@
+using SchoolAgainStudyContracts.BindingModel;
+using SchoolAgainStudyContracts.ViewModel;
+using SchoolAgainStudyDataModels.Models;
+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;
+
+namespace SchoolAgainStudyDataBaseImplements.Models
+{
+    public class Lesson : ILesson
+    {
+        [Required]
+        public string Title { get; set; } = string.Empty;
+        [Required]
+        public DateTime DateEvent { get; set; }
+        [Required]
+        public int ProductId { get; set; }
+
+        public string ProductName { get; set; } = string.Empty;
+
+        public virtual Product product { get; set; }
+        public int TeacherId { get; set; }
+        private Dictionary<int, IMaterial>? _LessonMaterials = null;
+        [NotMapped]
+        public Dictionary<int, IMaterial> LessonMaterials 
+        { get 
+            {
+                if (_LessonMaterials == null)
+                {
+                    _LessonMaterials = Materials
+                            .ToDictionary(recPC => recPC.MaterialId, recPC => (recPC.Material as IMaterial));
+                }
+                return _LessonMaterials;
+            } 
+        }
+
+        public int Id { get; set; }
+
+        [ForeignKey("LessonId")]
+        public virtual List<LessonMaterial> Materials { get; set; } = new();
+        public static Lesson Create(SchoolDataBase context, LessonBindingModel model)
+        {
+            return new Lesson()
+            {
+                Id = model.Id,
+                Title = model.Title,
+                DateEvent = model.DateEvent,
+                ProductId = model.ProductId,
+                ProductName = model.ProductName,
+                TeacherId = model.TeacherId,
+                Materials = model.LessonMaterials.Select(x => new LessonMaterial
+                {
+                    Material = context.Materials.First(y => y.Id == x.Key),
+                }).ToList()
+            };
+        }
+
+        public void Update(LessonBindingModel model)
+        {
+            Title = model.Title;
+            DateEvent = model.DateEvent;       
+        }
+
+        public LessonViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Title = Title,
+            DateEvent = DateEvent,
+            ProductId = ProductId,
+            ProductName = ProductName,
+            TeacherId = TeacherId,
+            LessonMaterials = LessonMaterials
+        };
+
+        public void UpdateMaterials(SchoolDataBase context, LessonBindingModel model)
+        {
+            var lessonMaterials = context.LessonMaterials.Where(rec => rec.LessonId == model.Id).ToList();
+            if (lessonMaterials != null && lessonMaterials.Count > 0)
+            {
+                context.LessonMaterials.RemoveRange(lessonMaterials.Where(rec => !model.LessonMaterials.ContainsKey(rec.MaterialId)));
+                context.SaveChanges();
+
+                foreach (var updateMaterial in lessonMaterials)
+                {
+                    model.LessonMaterials.Remove(updateMaterial.MaterialId);
+                }
+                context.SaveChanges();
+            }
+            var lesson = context.Lessons.First(x => x.Id == Id);
+            foreach (var pc in model.LessonMaterials)
+            {
+                context.LessonMaterials.Add(new LessonMaterial
+                {
+                    Lesson = lesson,
+                    Material = context.Materials.First(x => x.Id == pc.Key),
+                });
+                context.SaveChanges();
+            }
+            _LessonMaterials = null;
+        }
+    }
+}
diff --git a/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/LessonMaterial.cs b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/LessonMaterial.cs
new file mode 100644
index 0000000..2dac9ac
--- /dev/null
+++ b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/LessonMaterial.cs
@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SchoolAgainStudyDataBaseImplements.Models
+{
+    public class LessonMaterial
+    {
+        public int Id { get; set; }
+        [Required]
+        public int LessonId { get; set; }
+        [Required]
+        public int MaterialId { get; set; }
+        public virtual Lesson Lesson { get; set; } = new();
+        public virtual Material Material { get; set; } = new();
+    }
+}
diff --git a/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Material.cs b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Material.cs
new file mode 100644
index 0000000..d6e2dcc
--- /dev/null
+++ b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Material.cs
@@ -0,0 +1,71 @@
+using SchoolAgainStudyContracts.BindingModel;
+using SchoolAgainStudyContracts.ViewModel;
+using SchoolAgainStudyDataModels.Models;
+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;
+
+namespace SchoolAgainStudyDataBaseImplements.Models
+{
+    public class Material : IMaterial
+    {
+        [Required]
+        public string Title { get; set; } = string.Empty;
+        [Required]
+        public string SphereUse { get; set; } = string.Empty;
+
+        public int Id { get; set; }
+
+        [ForeignKey("MaterialId")]
+        public virtual List<LessonMaterial> LessonMaterials { get; set; } = new();
+        [ForeignKey("MaterialId")]
+        public virtual List<TaskMaterial> TaskMaterial { get; set; } = new();
+        [ForeignKey("MaterialId")]
+        public virtual List<TeacherMaterial> TeacherMaterial { get; set; } = new();
+
+        public static Material? Create(MaterialBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Material()
+            {
+                Id = model.Id,
+                Title = model.Title,
+                SphereUse = model.SphereUse
+            };
+        }
+
+        public static Material Create(MaterialViewModel model)
+        {
+            return new Material
+            {
+                Id = model.Id,
+                Title = model.Title,
+                SphereUse = model.SphereUse
+            };
+        }
+
+        public void Update(MaterialBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Title = model.Title;
+            SphereUse = model.SphereUse;
+        }
+
+        public MaterialViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Title = Title,
+            SphereUse = SphereUse
+        };
+    }
+}
diff --git a/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Product.cs b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Product.cs
index 6dc01ad..b9975cb 100644
--- a/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Product.cs
+++ b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Product.cs
@@ -60,6 +60,7 @@ namespace SchoolAgainStudyDataBaseImplements.Models
         {
             Title = model.Title;
             Description = model.Description;
+            DateCreate = model.DateCreate;
         }
 
         public ProductViewModel GetViewModel => new()
diff --git a/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Task.cs b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Task.cs
new file mode 100644
index 0000000..5b56111
--- /dev/null
+++ b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Task.cs
@@ -0,0 +1,103 @@
+using SchoolAgainStudyContracts.BindingModel;
+using SchoolAgainStudyContracts.ViewModel;
+using SchoolAgainStudyDataModels.Models;
+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;
+
+namespace SchoolAgainStudyDataBaseImplements.Models
+{
+    public class Task : ITask
+    {
+        [Required]
+        public string Title { get; set; } = string.Empty;
+        [Required]
+        public DateTime DateIssue { get; set; }
+        [Required]
+        public DateTime DateDelivery { get; set; }  
+
+        public int TeacherId { get; set; }
+        private Dictionary<int, IMaterial>? _TaskMaterials = null;
+        [NotMapped]
+        public Dictionary<int, IMaterial> TaskMaterials { get 
+            {
+                if (_TaskMaterials == null)
+                {
+                    _TaskMaterials = Materials
+                            .ToDictionary(recPC => recPC.MaterialId, recPC => (recPC.Material as IMaterial));
+                }
+                return _TaskMaterials;
+            } 
+        } 
+
+        public int Id { get; set; }
+        [ForeignKey("TaskId")]
+        public virtual List<TaskMaterial> Materials { get; set; } = new();
+        [ForeignKey("TaskId")]
+        public virtual List<Diy> Diys { get; set; } = new();
+
+        public static Task Create(SchoolDataBase context, TaskBindingModel model)
+        {
+            return new Task()
+            {
+                Id = model.Id,
+                Title = model.Title,
+                DateIssue = model.DateIssue,
+                DateDelivery = model.DateDelivery,
+                TeacherId = model.TeacherId,
+                Materials = model.TaskMaterials.Select(x => new TaskMaterial
+                {
+                    Material = context.Materials.First(y => y.Id == x.Key),
+                }).ToList()
+            };
+        }
+
+        public void Update(TaskBindingModel model)
+        {
+            Title = model.Title;
+            DateIssue = model.DateIssue;
+            DateDelivery = model.DateDelivery;
+        }
+
+        public TaskViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Title = Title,
+            DateIssue = DateIssue,
+            DateDelivery = DateDelivery,
+            TeacherId = TeacherId,
+            TaskMaterials = TaskMaterials
+        };
+
+        public void UpdateMaterials(SchoolDataBase context, TaskBindingModel model)
+        {
+            var taskMaterials = context.TaskMaterials.Where(rec => rec.TaskId == model.Id).ToList();
+            if (taskMaterials != null && taskMaterials.Count > 0)
+            {
+                context.TaskMaterials.RemoveRange(taskMaterials.Where(rec => !model.TaskMaterials.ContainsKey(rec.MaterialId)));
+                context.SaveChanges();
+
+                foreach (var updateMaterial in taskMaterials)
+                {
+                    model.TaskMaterials.Remove(updateMaterial.MaterialId);
+                }
+                context.SaveChanges();
+            }
+            var task = context.Tasks.First(x => x.Id == Id);
+            foreach (var pc in model.TaskMaterials)
+            {
+                context.TaskMaterials.Add(new TaskMaterial
+                {
+                    Task = task,
+                    Material = context.Materials.First(x => x.Id == pc.Key),
+                });
+                context.SaveChanges();
+            }
+            _TaskMaterials = null;
+        }
+    }
+}
diff --git a/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/TaskMaterial.cs b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/TaskMaterial.cs
new file mode 100644
index 0000000..37c513d
--- /dev/null
+++ b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/TaskMaterial.cs
@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SchoolAgainStudyDataBaseImplements.Models
+{
+    public class TaskMaterial
+    {
+        public int Id { get; set; }
+        [Required]
+        public int TaskId { get; set; }
+        [Required]
+        public int MaterialId { get; set; }
+        public virtual Task Task { get; set; } = new();
+        public virtual Material Material { get; set; } = new();
+    }
+}
diff --git a/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Teacher.cs b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Teacher.cs
new file mode 100644
index 0000000..a545ba5
--- /dev/null
+++ b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/Teacher.cs
@@ -0,0 +1,112 @@
+using SchoolAgainStudyContracts.BindingModel;
+using SchoolAgainStudyContracts.ViewModel;
+using SchoolAgainStudyDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Security.Claims;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SchoolAgainStudyDataBaseImplements.Models
+{
+    public class Teacher : ITeacher
+    {
+        [Required]
+        public string Name { get; set; } = string.Empty;
+        [Required]
+        public string Post { get; set; } = string.Empty;
+        [Required]
+        public string Phone { get; set; } = string.Empty;
+        [Required]
+        public string Login { get; set; } = string.Empty;
+        [Required]
+        public string Password { get; set; } = string.Empty;
+        private Dictionary<int, IMaterial>? _TeacherMaterials = null;
+        [NotMapped]
+        public Dictionary<int, IMaterial> TeacherMaterials {
+            get
+            {
+                if (_TeacherMaterials == null)
+                {
+                    _TeacherMaterials = Materials
+                            .ToDictionary(recPC => recPC.MaterialId, recPC => (recPC.Material as IMaterial));
+                }
+                return _TeacherMaterials;
+            }
+        } 
+
+        public int Id { get; set; }
+        [ForeignKey("TeacherId")]
+        public virtual List<TeacherMaterial> Materials { get; set; } = new();
+        [ForeignKey("TeacherId")]
+        public virtual List<Task> Tasks { get; set; } = new();
+        [ForeignKey("TeacherId")]
+        public virtual List<Lesson> Lessons { get; set; } = new();
+        public static Teacher Create(SchoolDataBase context, TeacherBindingModel model)
+        {
+            return new Teacher()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Post = model.Post,
+                Phone = model.Phone,
+                Login = model.Login,
+                Password = model.Password,
+                Materials = model.TeacherMaterials.Select(x => new TeacherMaterial
+                {
+                    Material = context.Materials.First(y => y.Id == x.Key),
+                }).ToList()
+            };
+        }
+
+        public void Update(TeacherBindingModel model)
+        {
+            Name = model.Name;
+            Post = model.Post;
+            Phone = model.Phone;
+            Login = model.Login;
+            Password = model.Password;
+        }
+
+        public TeacherViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Post = Post,
+            Phone = Phone,
+            Login = Login,
+            Password = Password,
+            TeacherMaterials = TeacherMaterials
+        };
+
+        public void UpdateMaterials(SchoolDataBase context, TeacherBindingModel model)
+        {
+            var teacherMaterials = context.TeacherMaterials.Where(rec => rec.TeacherId == model.Id).ToList();
+            if (teacherMaterials != null && teacherMaterials.Count > 0)
+            {
+                context.TeacherMaterials.RemoveRange(teacherMaterials.Where(rec => !model.TeacherMaterials.ContainsKey(rec.MaterialId)));
+                context.SaveChanges();
+
+                foreach (var updateMaterial in teacherMaterials)
+                {
+                    model.TeacherMaterials.Remove(updateMaterial.MaterialId);
+                }
+                context.SaveChanges();
+            }
+            var teacher = context.Teachers.First(x => x.Id == Id);
+            foreach (var pc in model.TeacherMaterials)
+            {
+                context.TeacherMaterials.Add(new TeacherMaterial
+                {
+                    Teacher = teacher,
+                    Material = context.Materials.First(x => x.Id == pc.Key),
+                });
+                context.SaveChanges();
+            }
+            _TeacherMaterials = null;
+        }
+    }
+}
diff --git a/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/TeacherMaterial.cs b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/TeacherMaterial.cs
new file mode 100644
index 0000000..3435c05
--- /dev/null
+++ b/ProtRPP/SchoolAgainStudyDataBaseImplements/Models/TeacherMaterial.cs
@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SchoolAgainStudyDataBaseImplements.Models
+{
+    public class TeacherMaterial
+    {
+        public int Id { get; set; }
+        [Required]
+        public int TeacherId { get; set; }
+        [Required]
+        public int MaterialId { get; set; }
+        public virtual Teacher Teacher { get; set; } = new();
+        public virtual Material Material { get; set; } = new();
+    }
+}
diff --git a/ProtRPP/SchoolAgainStudyDataBaseImplements/SchoolDataBase.cs b/ProtRPP/SchoolAgainStudyDataBaseImplements/SchoolDataBase.cs
new file mode 100644
index 0000000..ddd2137
--- /dev/null
+++ b/ProtRPP/SchoolAgainStudyDataBaseImplements/SchoolDataBase.cs
@@ -0,0 +1,48 @@
+using Microsoft.EntityFrameworkCore;
+using SchoolAgainStudyDataBaseImplements.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Runtime.ConstrainedExecution;
+using System.Text;
+using System.Threading.Tasks;
+using Task = SchoolAgainStudyDataBaseImplements.Models.Task;
+
+namespace SchoolAgainStudyDataBaseImplements
+{
+    public class SchoolDataBase : DbContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            if (optionsBuilder.IsConfigured == false)
+            {
+                optionsBuilder.UseNpgsql("Server=PostgreSQL;Host=localhost;Port=5432;Database=AutoPlantDB;Username=postgres;Password=postgres");
+            }
+            base.OnConfiguring(optionsBuilder);
+        }
+
+        public virtual DbSet<Student> Students { set; get; }
+
+        public virtual DbSet<StudentInterest> StudentInterests { set; get; }
+
+        public virtual DbSet<Interest> Interests { set; get; }
+
+        public virtual DbSet<Diy> Diys { set; get; }
+        public virtual DbSet<DiyInterest> DiyInterests { set; get; }
+        public virtual DbSet<Product> Products { set; get; }
+        public virtual DbSet<ProductInterest> ProductInterests { set; get; }
+
+        public virtual DbSet<Teacher> Teachers { set; get; }
+
+        public virtual DbSet<TeacherMaterial> TeacherMaterials { set; get; }
+
+        public virtual DbSet<Material> Materials { set; get; }
+
+        public virtual DbSet<Lesson> Lessons { set; get; }
+        public virtual DbSet<LessonMaterial> LessonMaterials { set; get; }
+        public virtual DbSet<Task> Tasks { set; get; }
+        public virtual DbSet<TaskMaterial> TaskMaterials { set; get; }
+
+    }
+}