diff --git a/SushiBar.sln b/SushiBar.sln
index 9456259..ce801dd 100644
--- a/SushiBar.sln
+++ b/SushiBar.sln
@@ -7,7 +7,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SushiBarView", "SushiBarVie
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SushiBarDataModels", "SushiBarDataModels\SushiBarDataModels.csproj", "{4A5A85B2-9B70-4493-B550-0E29FE82E9FD}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SushiBarDatabaseImplement", "SushiBarDatabaseImplement\SushiBarDatabaseImplement.csproj", "{135C846B-59EC-4803-B07C-8991C60C57D6}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SushiBarDatabaseImplement", "SushiBarDatabaseImplement\SushiBarDatabaseImplement.csproj", "{135C846B-59EC-4803-B07C-8991C60C57D6}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SushiBarContracts", "SushiBarContracts\SushiBarContracts.csproj", "{25C0DCD8-6A40-42C5-8459-00F6F085A8C6}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -27,6 +29,10 @@ Global
 		{135C846B-59EC-4803-B07C-8991C60C57D6}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{135C846B-59EC-4803-B07C-8991C60C57D6}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{135C846B-59EC-4803-B07C-8991C60C57D6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{25C0DCD8-6A40-42C5-8459-00F6F085A8C6}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{25C0DCD8-6A40-42C5-8459-00F6F085A8C6}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{25C0DCD8-6A40-42C5-8459-00F6F085A8C6}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{25C0DCD8-6A40-42C5-8459-00F6F085A8C6}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/SushiBarContracts/SushiBarContracts.csproj b/SushiBarContracts/SushiBarContracts.csproj
new file mode 100644
index 0000000..01dfc5c
--- /dev/null
+++ b/SushiBarContracts/SushiBarContracts.csproj
@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Folder Include="BindingModels\" />
+    <Folder Include="SearchModels\" />
+  </ItemGroup>
+
+</Project>
diff --git a/SushiBarContracts/ViewModels/ChequeItemViewModel.cs b/SushiBarContracts/ViewModels/ChequeItemViewModel.cs
new file mode 100644
index 0000000..c39e0d1
--- /dev/null
+++ b/SushiBarContracts/ViewModels/ChequeItemViewModel.cs
@@ -0,0 +1,22 @@
+using System.ComponentModel;
+
+namespace SushiBarContracts.ViewModels
+{
+    public class ChequeItemViewModel
+    {
+        public int CheuqueId { get; set; }
+
+        public int DishId { get; set; }
+
+        [DisplayName("Название блюда")]
+        public string DishName { get; set; } = string.Empty;
+
+        public int CookId { get; set; }
+
+        [DisplayName("Повар")]
+        public string CookFio { get; set; } = string.Empty;
+
+        [DisplayName("Количество")]
+        public int Count { get; set; }
+    }
+}
diff --git a/SushiBarContracts/ViewModels/ChequeViewModel.cs b/SushiBarContracts/ViewModels/ChequeViewModel.cs
new file mode 100644
index 0000000..57db2bb
--- /dev/null
+++ b/SushiBarContracts/ViewModels/ChequeViewModel.cs
@@ -0,0 +1,27 @@
+using System.ComponentModel;
+
+namespace SushiBarContracts.ViewModels
+{
+    public class ChequeViewModel
+    {
+        public int Id { get; set; }
+
+        public int? CustomerId { get; set; }
+
+        [DisplayName("Покупатель")]
+        public string? CustomerFio { get; set; } = string.Empty;
+
+        public Dictionary<int, ChequeItemViewModel> ChequeItems { get; set; } = new();
+
+        [DisplayName("Дата заказа")]
+        public DateTime OrderDate { get; set; }
+
+        [DisplayName("Сумма заказа")]
+        public double TotalSum { get; set; }
+
+        public int? PromotionId { get; set; }
+
+        [DisplayName("Скидка")]
+        public float? Discount { get; set; }
+    }
+}
diff --git a/SushiBarContracts/ViewModels/CookViewModel.cs b/SushiBarContracts/ViewModels/CookViewModel.cs
new file mode 100644
index 0000000..bcc6d5a
--- /dev/null
+++ b/SushiBarContracts/ViewModels/CookViewModel.cs
@@ -0,0 +1,15 @@
+using System.ComponentModel;
+
+namespace SushiBarContracts.ViewModels
+{
+    public class CookViewModel
+    {
+        public int Id { get; set; }
+
+        [DisplayName("Инициалы повара")]
+        public string Fio { get; set; } = string.Empty;
+
+        [DisplayName("Дата приема на работу")]
+        public DateTime EmploymentDate { get; set; }
+    }
+}
diff --git a/SushiBarContracts/ViewModels/CustomerViewModel.cs b/SushiBarContracts/ViewModels/CustomerViewModel.cs
new file mode 100644
index 0000000..4e54205
--- /dev/null
+++ b/SushiBarContracts/ViewModels/CustomerViewModel.cs
@@ -0,0 +1,18 @@
+using System.ComponentModel;
+
+namespace SushiBarContracts.ViewModels
+{
+    public class CustomerViewModel
+    {
+        public int Id { get; set; }
+
+        [DisplayName("Инициалы покупателя")]
+        public string Fio { get; set; } = string.Empty;
+
+        [DisplayName("Дата рождения")]
+        public DateTime? BirthdayDate { get; set; }
+
+        [DisplayName("Общая сумма всех заказов")]
+        public double SumOfAllOrders { get; set; }
+    }
+}
diff --git a/SushiBarContracts/ViewModels/DishIngredientViewModel.cs b/SushiBarContracts/ViewModels/DishIngredientViewModel.cs
new file mode 100644
index 0000000..e2822d1
--- /dev/null
+++ b/SushiBarContracts/ViewModels/DishIngredientViewModel.cs
@@ -0,0 +1,17 @@
+using System.ComponentModel;
+
+namespace SushiBarContracts.ViewModels
+{
+    public class DishIngredientViewModel
+    {
+        public int DishId { get; set; }
+
+        public int IngredientId { get; set; }
+
+        [DisplayName("Наименование ингредиента")]
+        public string IngredientName { get; set; } = string.Empty;
+
+        [DisplayName("Количество")]
+        public int Count { get; set; }
+    }
+}
diff --git a/SushiBarContracts/ViewModels/DishViewModel.cs b/SushiBarContracts/ViewModels/DishViewModel.cs
new file mode 100644
index 0000000..cdea94b
--- /dev/null
+++ b/SushiBarContracts/ViewModels/DishViewModel.cs
@@ -0,0 +1,17 @@
+using System.ComponentModel;
+
+namespace SushiBarContracts.ViewModels
+{
+    public class DishViewModel
+    {
+        public int Id { get; set; }
+
+        [DisplayName("Название блюда")]
+        public string DishName { get; set; } = string.Empty;
+
+        [DisplayName("Категория")]
+        public string Category { get; set; } = string.Empty;
+
+        public Dictionary<int, DishIngredientViewModel> Ingredients { get; set; } = new();
+    }
+}
diff --git a/SushiBarContracts/ViewModels/IngredientViewModel.cs b/SushiBarContracts/ViewModels/IngredientViewModel.cs
new file mode 100644
index 0000000..59760fa
--- /dev/null
+++ b/SushiBarContracts/ViewModels/IngredientViewModel.cs
@@ -0,0 +1,18 @@
+using System.ComponentModel;
+
+namespace SushiBarContracts.ViewModels
+{
+    public class IngredientViewModel
+    {
+        public int Id { get; set; }
+
+        [DisplayName("Наименование ингредиента")]
+        public string IngredientName { get; set; } = string.Empty;
+
+        [DisplayName("Единицы измерения")]
+        public string Unit { get; set; } = string.Empty;
+
+        [DisplayName("Стоимость за единицу")]
+        public double Cost { get; set; }
+    }
+}
diff --git a/SushiBarContracts/ViewModels/PromotionViewModel.cs b/SushiBarContracts/ViewModels/PromotionViewModel.cs
new file mode 100644
index 0000000..dcf6d80
--- /dev/null
+++ b/SushiBarContracts/ViewModels/PromotionViewModel.cs
@@ -0,0 +1,18 @@
+using System.ComponentModel;
+
+namespace SushiBarContracts.ViewModels
+{
+    public class PromotionViewModel
+    {
+        public int Id { get; set; }
+
+        [DisplayName("Название акции")]
+        public string PromotionName { get; set; } = string.Empty;
+
+        [DisplayName("Размер скидки")]
+        public float Discount { get; set; }
+
+        [DisplayName("Минимальная сумма для применения")]
+        public double TriggeringSum { get; set; }
+    }
+}
diff --git a/SushiBarDatabaseImplement/Migrations/20240515165005_Initial.Designer.cs b/SushiBarDatabaseImplement/Migrations/20240515165005_Initial.Designer.cs
new file mode 100644
index 0000000..51c75a2
--- /dev/null
+++ b/SushiBarDatabaseImplement/Migrations/20240515165005_Initial.Designer.cs
@@ -0,0 +1,320 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using SushiBarDatabaseImplement;
+
+#nullable disable
+
+namespace SushiBarDatabaseImplement.Migrations
+{
+    [DbContext(typeof(SushiBarDatabase))]
+    [Migration("20240515165005_Initial")]
+    partial class Initial
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.19")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Cheque", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int?>("CustomerId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("OrderDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<int?>("PromotionId")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("TotalSum")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CustomerId");
+
+                    b.HasIndex("PromotionId");
+
+                    b.ToTable("Cheques");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.ChequeItem", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ChequeId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("CookId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("DishId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ChequeId");
+
+                    b.HasIndex("CookId");
+
+                    b.HasIndex("DishId");
+
+                    b.ToTable("ChequeItems");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Cook", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("EmploymentDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("Fio")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Cooks");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Customer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("BirthdayDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("Fio")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("SumOfAllOrders")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Customers");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Dish", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Category")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("DishName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Dishes");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.DishIngredient", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("DishId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("IngredientId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DishId");
+
+                    b.HasIndex("IngredientId");
+
+                    b.ToTable("DishIngredients");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Ingredient", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("IngredientName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Unit")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Ingredients");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Promotion", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<float>("Discount")
+                        .HasColumnType("real");
+
+                    b.Property<string>("PromotionName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("TriggeringSum")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Promotions");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Cheque", b =>
+                {
+                    b.HasOne("SushiBarDatabaseImplement.Models.Customer", "Customer")
+                        .WithMany("Cheques")
+                        .HasForeignKey("CustomerId");
+
+                    b.HasOne("SushiBarDatabaseImplement.Models.Promotion", "Promotion")
+                        .WithMany("Cheques")
+                        .HasForeignKey("PromotionId");
+
+                    b.Navigation("Customer");
+
+                    b.Navigation("Promotion");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.ChequeItem", b =>
+                {
+                    b.HasOne("SushiBarDatabaseImplement.Models.Cheque", "Cheque")
+                        .WithMany("ChequeItems")
+                        .HasForeignKey("ChequeId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SushiBarDatabaseImplement.Models.Cook", "Cook")
+                        .WithMany("ChequeItems")
+                        .HasForeignKey("CookId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SushiBarDatabaseImplement.Models.Dish", "Dish")
+                        .WithMany("ChequeItems")
+                        .HasForeignKey("DishId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Cheque");
+
+                    b.Navigation("Cook");
+
+                    b.Navigation("Dish");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.DishIngredient", b =>
+                {
+                    b.HasOne("SushiBarDatabaseImplement.Models.Dish", "Dish")
+                        .WithMany("DishIngredients")
+                        .HasForeignKey("DishId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SushiBarDatabaseImplement.Models.Ingredient", "Ingredient")
+                        .WithMany("DishIngredients")
+                        .HasForeignKey("IngredientId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Dish");
+
+                    b.Navigation("Ingredient");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Cheque", b =>
+                {
+                    b.Navigation("ChequeItems");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Cook", b =>
+                {
+                    b.Navigation("ChequeItems");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Customer", b =>
+                {
+                    b.Navigation("Cheques");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Dish", b =>
+                {
+                    b.Navigation("ChequeItems");
+
+                    b.Navigation("DishIngredients");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Ingredient", b =>
+                {
+                    b.Navigation("DishIngredients");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Promotion", b =>
+                {
+                    b.Navigation("Cheques");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/SushiBarDatabaseImplement/Migrations/20240515165005_Initial.cs b/SushiBarDatabaseImplement/Migrations/20240515165005_Initial.cs
new file mode 100644
index 0000000..a6ba372
--- /dev/null
+++ b/SushiBarDatabaseImplement/Migrations/20240515165005_Initial.cs
@@ -0,0 +1,239 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace SushiBarDatabaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class Initial : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Cooks",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Fio = table.Column<string>(type: "text", nullable: false),
+                    EmploymentDate = table.Column<DateTime>(type: "timestamp without time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Cooks", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Customers",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Fio = table.Column<string>(type: "text", nullable: false),
+                    BirthdayDate = table.Column<DateTime>(type: "timestamp without time zone", nullable: false),
+                    SumOfAllOrders = table.Column<double>(type: "double precision", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Customers", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Dishes",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    DishName = table.Column<string>(type: "text", nullable: false),
+                    Category = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Dishes", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Ingredients",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    IngredientName = table.Column<string>(type: "text", nullable: false),
+                    Unit = table.Column<string>(type: "text", nullable: false),
+                    Cost = table.Column<double>(type: "double precision", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Ingredients", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Promotions",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    PromotionName = table.Column<string>(type: "text", nullable: false),
+                    Discount = table.Column<float>(type: "real", nullable: false),
+                    TriggeringSum = table.Column<double>(type: "double precision", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Promotions", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "DishIngredients",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    DishId = table.Column<int>(type: "integer", nullable: false),
+                    IngredientId = table.Column<int>(type: "integer", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_DishIngredients", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_DishIngredients_Dishes_DishId",
+                        column: x => x.DishId,
+                        principalTable: "Dishes",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_DishIngredients_Ingredients_IngredientId",
+                        column: x => x.IngredientId,
+                        principalTable: "Ingredients",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Cheques",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    CustomerId = table.Column<int>(type: "integer", nullable: true),
+                    OrderDate = table.Column<DateTime>(type: "timestamp without time zone", nullable: false),
+                    TotalSum = table.Column<double>(type: "double precision", nullable: false),
+                    PromotionId = table.Column<int>(type: "integer", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Cheques", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Cheques_Customers_CustomerId",
+                        column: x => x.CustomerId,
+                        principalTable: "Customers",
+                        principalColumn: "Id");
+                    table.ForeignKey(
+                        name: "FK_Cheques_Promotions_PromotionId",
+                        column: x => x.PromotionId,
+                        principalTable: "Promotions",
+                        principalColumn: "Id");
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ChequeItems",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ChequeId = table.Column<int>(type: "integer", nullable: false),
+                    DishId = table.Column<int>(type: "integer", nullable: false),
+                    CookId = table.Column<int>(type: "integer", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ChequeItems", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ChequeItems_Cheques_ChequeId",
+                        column: x => x.ChequeId,
+                        principalTable: "Cheques",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_ChequeItems_Cooks_CookId",
+                        column: x => x.CookId,
+                        principalTable: "Cooks",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_ChequeItems_Dishes_DishId",
+                        column: x => x.DishId,
+                        principalTable: "Dishes",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ChequeItems_ChequeId",
+                table: "ChequeItems",
+                column: "ChequeId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ChequeItems_CookId",
+                table: "ChequeItems",
+                column: "CookId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ChequeItems_DishId",
+                table: "ChequeItems",
+                column: "DishId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Cheques_CustomerId",
+                table: "Cheques",
+                column: "CustomerId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Cheques_PromotionId",
+                table: "Cheques",
+                column: "PromotionId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_DishIngredients_DishId",
+                table: "DishIngredients",
+                column: "DishId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_DishIngredients_IngredientId",
+                table: "DishIngredients",
+                column: "IngredientId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "ChequeItems");
+
+            migrationBuilder.DropTable(
+                name: "DishIngredients");
+
+            migrationBuilder.DropTable(
+                name: "Cheques");
+
+            migrationBuilder.DropTable(
+                name: "Cooks");
+
+            migrationBuilder.DropTable(
+                name: "Dishes");
+
+            migrationBuilder.DropTable(
+                name: "Ingredients");
+
+            migrationBuilder.DropTable(
+                name: "Customers");
+
+            migrationBuilder.DropTable(
+                name: "Promotions");
+        }
+    }
+}
diff --git a/SushiBarDatabaseImplement/Migrations/SushiBarDatabaseModelSnapshot.cs b/SushiBarDatabaseImplement/Migrations/SushiBarDatabaseModelSnapshot.cs
new file mode 100644
index 0000000..d3f1fa3
--- /dev/null
+++ b/SushiBarDatabaseImplement/Migrations/SushiBarDatabaseModelSnapshot.cs
@@ -0,0 +1,317 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using SushiBarDatabaseImplement;
+
+#nullable disable
+
+namespace SushiBarDatabaseImplement.Migrations
+{
+    [DbContext(typeof(SushiBarDatabase))]
+    partial class SushiBarDatabaseModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.19")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Cheque", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int?>("CustomerId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("OrderDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<int?>("PromotionId")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("TotalSum")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CustomerId");
+
+                    b.HasIndex("PromotionId");
+
+                    b.ToTable("Cheques");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.ChequeItem", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ChequeId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("CookId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("DishId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ChequeId");
+
+                    b.HasIndex("CookId");
+
+                    b.HasIndex("DishId");
+
+                    b.ToTable("ChequeItems");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Cook", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("EmploymentDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("Fio")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Cooks");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Customer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("BirthdayDate")
+                        .HasColumnType("timestamp without time zone");
+
+                    b.Property<string>("Fio")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("SumOfAllOrders")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Customers");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Dish", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Category")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("DishName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Dishes");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.DishIngredient", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("DishId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("IngredientId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DishId");
+
+                    b.HasIndex("IngredientId");
+
+                    b.ToTable("DishIngredients");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Ingredient", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("double precision");
+
+                    b.Property<string>("IngredientName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Unit")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Ingredients");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Promotion", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<float>("Discount")
+                        .HasColumnType("real");
+
+                    b.Property<string>("PromotionName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("TriggeringSum")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Promotions");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Cheque", b =>
+                {
+                    b.HasOne("SushiBarDatabaseImplement.Models.Customer", "Customer")
+                        .WithMany("Cheques")
+                        .HasForeignKey("CustomerId");
+
+                    b.HasOne("SushiBarDatabaseImplement.Models.Promotion", "Promotion")
+                        .WithMany("Cheques")
+                        .HasForeignKey("PromotionId");
+
+                    b.Navigation("Customer");
+
+                    b.Navigation("Promotion");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.ChequeItem", b =>
+                {
+                    b.HasOne("SushiBarDatabaseImplement.Models.Cheque", "Cheque")
+                        .WithMany("ChequeItems")
+                        .HasForeignKey("ChequeId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SushiBarDatabaseImplement.Models.Cook", "Cook")
+                        .WithMany("ChequeItems")
+                        .HasForeignKey("CookId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SushiBarDatabaseImplement.Models.Dish", "Dish")
+                        .WithMany("ChequeItems")
+                        .HasForeignKey("DishId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Cheque");
+
+                    b.Navigation("Cook");
+
+                    b.Navigation("Dish");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.DishIngredient", b =>
+                {
+                    b.HasOne("SushiBarDatabaseImplement.Models.Dish", "Dish")
+                        .WithMany("DishIngredients")
+                        .HasForeignKey("DishId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SushiBarDatabaseImplement.Models.Ingredient", "Ingredient")
+                        .WithMany("DishIngredients")
+                        .HasForeignKey("IngredientId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Dish");
+
+                    b.Navigation("Ingredient");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Cheque", b =>
+                {
+                    b.Navigation("ChequeItems");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Cook", b =>
+                {
+                    b.Navigation("ChequeItems");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Customer", b =>
+                {
+                    b.Navigation("Cheques");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Dish", b =>
+                {
+                    b.Navigation("ChequeItems");
+
+                    b.Navigation("DishIngredients");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Ingredient", b =>
+                {
+                    b.Navigation("DishIngredients");
+                });
+
+            modelBuilder.Entity("SushiBarDatabaseImplement.Models.Promotion", b =>
+                {
+                    b.Navigation("Cheques");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/SushiBarDatabaseImplement/Models/Cheque.cs b/SushiBarDatabaseImplement/Models/Cheque.cs
index f12ceee..738309f 100644
--- a/SushiBarDatabaseImplement/Models/Cheque.cs
+++ b/SushiBarDatabaseImplement/Models/Cheque.cs
@@ -22,7 +22,7 @@ namespace SushiBarDatabaseImplement.Models
 
         public virtual Promotion? Promotion { get; set; }
 
-        [ForeignKey("Cheque")]
-        public List<ChequeItem> ChequeItems { get; set; } = new();
+        [ForeignKey("ChequeId")]
+        public virtual List<ChequeItem> ChequeItems { get; set; } = new();
     }
 }
diff --git a/SushiBarDatabaseImplement/Models/Cook.cs b/SushiBarDatabaseImplement/Models/Cook.cs
index d02e8f7..bd662d2 100644
--- a/SushiBarDatabaseImplement/Models/Cook.cs
+++ b/SushiBarDatabaseImplement/Models/Cook.cs
@@ -15,6 +15,6 @@ namespace SushiBarDatabaseImplement.Models
         public DateTime EmploymentDate { get; set; }
 
         [ForeignKey("CookId")]
-        public List<ChequeItem> ChequeItems { get; set; } = new();
+        public virtual List<ChequeItem> ChequeItems { get; set; } = new();
     }
 }
diff --git a/SushiBarDatabaseImplement/Models/Customer.cs b/SushiBarDatabaseImplement/Models/Customer.cs
index 2f38f86..0109d4c 100644
--- a/SushiBarDatabaseImplement/Models/Customer.cs
+++ b/SushiBarDatabaseImplement/Models/Customer.cs
@@ -18,6 +18,6 @@ namespace SushiBarDatabaseImplement.Models
         public double SumOfAllOrders { get; set; }
 
         [ForeignKey("CustomerId")]
-        public List<Cheque> Cheques { get; set; } = new();
+        public virtual List<Cheque> Cheques { get; set; } = new();
     }
 }
diff --git a/SushiBarDatabaseImplement/Models/Dish.cs b/SushiBarDatabaseImplement/Models/Dish.cs
index e074a0c..2f277d7 100644
--- a/SushiBarDatabaseImplement/Models/Dish.cs
+++ b/SushiBarDatabaseImplement/Models/Dish.cs
@@ -18,6 +18,6 @@ namespace SushiBarDatabaseImplement.Models
         public virtual List<DishIngredient> DishIngredients { get; set; } = new();
 
         [ForeignKey("DishId")]
-        public List<ChequeItem> ChequeItems { get; set; } = new();
+        public virtual List<ChequeItem> ChequeItems { get; set; } = new();
     }
 }
diff --git a/SushiBarDatabaseImplement/Models/Promotion.cs b/SushiBarDatabaseImplement/Models/Promotion.cs
index d70bdae..c198c53 100644
--- a/SushiBarDatabaseImplement/Models/Promotion.cs
+++ b/SushiBarDatabaseImplement/Models/Promotion.cs
@@ -18,6 +18,6 @@ namespace SushiBarDatabaseImplement.Models
         public double TriggeringSum { get; set; }
 
         [ForeignKey("PromotionId")]
-        public List<Cheque> Cheques { get; set; } = new();
+        public virtual List<Cheque> Cheques { get; set; } = new();
     }
 }
diff --git a/SushiBarDatabaseImplement/Storages/IngredientStorage.cs b/SushiBarDatabaseImplement/Storages/IngredientStorage.cs
new file mode 100644
index 0000000..f9e9112
--- /dev/null
+++ b/SushiBarDatabaseImplement/Storages/IngredientStorage.cs
@@ -0,0 +1,7 @@
+namespace SushiBarDatabaseImplement.Storages
+{
+    public class IngredientStorage
+    {
+        public List<>
+    }
+}
diff --git a/SushiBarDatabaseImplement/SushiBarDatabaseImplement.csproj b/SushiBarDatabaseImplement/SushiBarDatabaseImplement.csproj
index 12c5ac5..ca3e10d 100644
--- a/SushiBarDatabaseImplement/SushiBarDatabaseImplement.csproj
+++ b/SushiBarDatabaseImplement/SushiBarDatabaseImplement.csproj
@@ -12,7 +12,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Npgsql" Version="8.0.3" />
+    <PackageReference Include="Npgsql" Version="7.0.7" />
     <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="7.0.18" />
   </ItemGroup>
 
diff --git a/SushiBarView/SushiBarView.csproj b/SushiBarView/SushiBarView.csproj
index b57c89e..c3d2ab9 100644
--- a/SushiBarView/SushiBarView.csproj
+++ b/SushiBarView/SushiBarView.csproj
@@ -8,4 +8,15 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.19">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\SushiBarDatabaseImplement\SushiBarDatabaseImplement.csproj" />
+  </ItemGroup>
+
 </Project>
\ No newline at end of file