Вроде получилось создать составной первичный ключ для многие ко многим

HardwareShop/HardwareShopDatabaseImplement/FoodOrdersDatabase.cs

@@ -17,6 +17,8 @@ namespace HardwareShopDatabaseImplement
         protected override void OnModelCreating(ModelBuilder modelBuilder)
         {
             modelBuilder.Entity<BuildComponent>().HasKey(x => new { x.ComponentId, x.BuildID });
+            modelBuilder.Entity<PurchaseBuild>().HasKey(x => new { x.PurchaseID, x.BuildID });
+            modelBuilder.Entity<PurchaseGood>().HasKey(x => new { x.PurchaseID, x.GoodID });
         }
 
         public virtual DbSet<Build> Builds { set; get; }

HardwareShop/HardwareShopDatabaseImplement/Migrations/20230401103551_init.Designer.cs

@@ -0,0 +1,336 @@
+// <auto-generated />
+using System;
+using HardwareShopDatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace HardwareShopDatabaseImplement.Migrations
+{
+    [DbContext(typeof(HardwareShopDatabase))]
+    [Migration("20230401103551_init")]
+    partial class init
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.4")
+                .HasAnnotation("Relational:MaxIdentifierLength", 128);
+
+            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder);
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Build", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("BuildName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<decimal>("Price")
+                        .HasColumnType("decimal(18,2)");
+
+                    b.Property<int>("UserID")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Builds");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.BuildComponent", b =>
+                {
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("BuildID")
+                        .HasColumnType("int");
+
+                    b.Property<int>("BuildId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.HasKey("ComponentId", "BuildID");
+
+                    b.HasIndex("BuildId");
+
+                    b.ToTable("BuildComponent");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Comment", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("BuildID")
+                        .HasColumnType("int");
+
+                    b.Property<string>("BuildName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Text")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("BuildID");
+
+                    b.ToTable("Comments");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Good", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Goods");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Purchase", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime?>("DatePurchase")
+                        .HasColumnType("datetime2");
+
+                    b.Property<int>("PurchaseStatus")
+                        .HasColumnType("int");
+
+                    b.Property<decimal>("Sum")
+                        .HasColumnType("decimal(18,2)");
+
+                    b.Property<int>("UserID")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserID");
+
+                    b.ToTable("Purchase");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.PurchaseBuild", b =>
+                {
+                    b.Property<int>("PurchaseID")
+                        .HasColumnType("int");
+
+                    b.Property<int>("BuildID")
+                        .HasColumnType("int");
+
+                    b.Property<int>("BuildId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<int>("PurchaseId")
+                        .HasColumnType("int");
+
+                    b.HasKey("PurchaseID", "BuildID");
+
+                    b.HasIndex("BuildId");
+
+                    b.HasIndex("PurchaseId");
+
+                    b.ToTable("PurchasesBuilds");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.PurchaseGood", b =>
+                {
+                    b.Property<int>("PurchaseID")
+                        .HasColumnType("int");
+
+                    b.Property<int>("GoodID")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<int>("PurchaseId")
+                        .HasColumnType("int");
+
+                    b.HasKey("PurchaseID", "GoodID");
+
+                    b.HasIndex("GoodID");
+
+                    b.HasIndex("PurchaseId");
+
+                    b.ToTable("PurchasesGoods");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Login")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("Role")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.BuildComponent", b =>
+                {
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Build", "Build")
+                        .WithMany("Components")
+                        .HasForeignKey("BuildId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Component", "Component")
+                        .WithMany()
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Build");
+
+                    b.Navigation("Component");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Comment", b =>
+                {
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Build", "Build")
+                        .WithMany()
+                        .HasForeignKey("BuildID")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Build");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Purchase", b =>
+                {
+                    b.HasOne("HardwareShopDatabaseImplement.Models.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserID")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.PurchaseBuild", b =>
+                {
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Build", "Build")
+                        .WithMany("Purchases")
+                        .HasForeignKey("BuildId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Purchase", "Purchase")
+                        .WithMany("Builds")
+                        .HasForeignKey("PurchaseId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Build");
+
+                    b.Navigation("Purchase");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.PurchaseGood", b =>
+                {
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Good", "Good")
+                        .WithMany()
+                        .HasForeignKey("GoodID")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Purchase", "Purchase")
+                        .WithMany("Goods")
+                        .HasForeignKey("PurchaseId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Good");
+
+                    b.Navigation("Purchase");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Build", b =>
+                {
+                    b.Navigation("Components");
+
+                    b.Navigation("Purchases");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Purchase", b =>
+                {
+                    b.Navigation("Builds");
+
+                    b.Navigation("Goods");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

HardwareShop/HardwareShopDatabaseImplement/Migrations/20230401103551_init.cs

@@ -0,0 +1,273 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace HardwareShopDatabaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class init : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Builds",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Price = table.Column<decimal>(type: "decimal(18,2)", nullable: false),
+                    BuildName = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    UserID = table.Column<int>(type: "int", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Builds", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Components",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1")
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Components", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Goods",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1")
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Goods", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Orders",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1")
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Orders", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Users",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Login = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Email = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Password = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Role = table.Column<int>(type: "int", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Users", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Comments",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Text = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    BuildName = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    BuildID = table.Column<int>(type: "int", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Comments", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Comments_Builds_BuildID",
+                        column: x => x.BuildID,
+                        principalTable: "Builds",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "BuildComponent",
+                columns: table => new
+                {
+                    BuildID = table.Column<int>(type: "int", nullable: false),
+                    ComponentId = table.Column<int>(type: "int", nullable: false),
+                    Count = table.Column<int>(type: "int", nullable: false),
+                    BuildId = table.Column<int>(type: "int", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_BuildComponent", x => new { x.ComponentId, x.BuildID });
+                    table.ForeignKey(
+                        name: "FK_BuildComponent_Builds_BuildId",
+                        column: x => x.BuildId,
+                        principalTable: "Builds",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_BuildComponent_Components_ComponentId",
+                        column: x => x.ComponentId,
+                        principalTable: "Components",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Purchase",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Sum = table.Column<decimal>(type: "decimal(18,2)", nullable: false),
+                    PurchaseStatus = table.Column<int>(type: "int", nullable: false),
+                    DatePurchase = table.Column<DateTime>(type: "datetime2", nullable: true),
+                    UserID = table.Column<int>(type: "int", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Purchase", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Purchase_Users_UserID",
+                        column: x => x.UserID,
+                        principalTable: "Users",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PurchasesBuilds",
+                columns: table => new
+                {
+                    BuildID = table.Column<int>(type: "int", nullable: false),
+                    PurchaseID = table.Column<int>(type: "int", nullable: false),
+                    Count = table.Column<int>(type: "int", nullable: false),
+                    BuildId = table.Column<int>(type: "int", nullable: false),
+                    PurchaseId = table.Column<int>(type: "int", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PurchasesBuilds", x => new { x.PurchaseID, x.BuildID });
+                    table.ForeignKey(
+                        name: "FK_PurchasesBuilds_Builds_BuildId",
+                        column: x => x.BuildId,
+                        principalTable: "Builds",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_PurchasesBuilds_Purchase_PurchaseId",
+                        column: x => x.PurchaseId,
+                        principalTable: "Purchase",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PurchasesGoods",
+                columns: table => new
+                {
+                    PurchaseID = table.Column<int>(type: "int", nullable: false),
+                    GoodID = table.Column<int>(type: "int", nullable: false),
+                    Count = table.Column<int>(type: "int", nullable: false),
+                    PurchaseId = table.Column<int>(type: "int", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PurchasesGoods", x => new { x.PurchaseID, x.GoodID });
+                    table.ForeignKey(
+                        name: "FK_PurchasesGoods_Goods_GoodID",
+                        column: x => x.GoodID,
+                        principalTable: "Goods",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_PurchasesGoods_Purchase_PurchaseId",
+                        column: x => x.PurchaseId,
+                        principalTable: "Purchase",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_BuildComponent_BuildId",
+                table: "BuildComponent",
+                column: "BuildId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Comments_BuildID",
+                table: "Comments",
+                column: "BuildID");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Purchase_UserID",
+                table: "Purchase",
+                column: "UserID");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchasesBuilds_BuildId",
+                table: "PurchasesBuilds",
+                column: "BuildId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchasesBuilds_PurchaseId",
+                table: "PurchasesBuilds",
+                column: "PurchaseId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchasesGoods_GoodID",
+                table: "PurchasesGoods",
+                column: "GoodID");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchasesGoods_PurchaseId",
+                table: "PurchasesGoods",
+                column: "PurchaseId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "BuildComponent");
+
+            migrationBuilder.DropTable(
+                name: "Comments");
+
+            migrationBuilder.DropTable(
+                name: "Orders");
+
+            migrationBuilder.DropTable(
+                name: "PurchasesBuilds");
+
+            migrationBuilder.DropTable(
+                name: "PurchasesGoods");
+
+            migrationBuilder.DropTable(
+                name: "Components");
+
+            migrationBuilder.DropTable(
+                name: "Builds");
+
+            migrationBuilder.DropTable(
+                name: "Goods");
+
+            migrationBuilder.DropTable(
+                name: "Purchase");
+
+            migrationBuilder.DropTable(
+                name: "Users");
+        }
+    }
+}

HardwareShop/HardwareShopDatabaseImplement/Migrations/HardwareShopDatabaseModelSnapshot.cs

@@ -0,0 +1,333 @@
+// <auto-generated />
+using System;
+using HardwareShopDatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace HardwareShopDatabaseImplement.Migrations
+{
+    [DbContext(typeof(HardwareShopDatabase))]
+    partial class HardwareShopDatabaseModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.4")
+                .HasAnnotation("Relational:MaxIdentifierLength", 128);
+
+            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder);
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Build", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("BuildName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<decimal>("Price")
+                        .HasColumnType("decimal(18,2)");
+
+                    b.Property<int>("UserID")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Builds");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.BuildComponent", b =>
+                {
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("BuildID")
+                        .HasColumnType("int");
+
+                    b.Property<int>("BuildId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.HasKey("ComponentId", "BuildID");
+
+                    b.HasIndex("BuildId");
+
+                    b.ToTable("BuildComponent");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Comment", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("BuildID")
+                        .HasColumnType("int");
+
+                    b.Property<string>("BuildName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Text")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("BuildID");
+
+                    b.ToTable("Comments");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Good", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Goods");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Purchase", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime?>("DatePurchase")
+                        .HasColumnType("datetime2");
+
+                    b.Property<int>("PurchaseStatus")
+                        .HasColumnType("int");
+
+                    b.Property<decimal>("Sum")
+                        .HasColumnType("decimal(18,2)");
+
+                    b.Property<int>("UserID")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserID");
+
+                    b.ToTable("Purchase");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.PurchaseBuild", b =>
+                {
+                    b.Property<int>("PurchaseID")
+                        .HasColumnType("int");
+
+                    b.Property<int>("BuildID")
+                        .HasColumnType("int");
+
+                    b.Property<int>("BuildId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<int>("PurchaseId")
+                        .HasColumnType("int");
+
+                    b.HasKey("PurchaseID", "BuildID");
+
+                    b.HasIndex("BuildId");
+
+                    b.HasIndex("PurchaseId");
+
+                    b.ToTable("PurchasesBuilds");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.PurchaseGood", b =>
+                {
+                    b.Property<int>("PurchaseID")
+                        .HasColumnType("int");
+
+                    b.Property<int>("GoodID")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<int>("PurchaseId")
+                        .HasColumnType("int");
+
+                    b.HasKey("PurchaseID", "GoodID");
+
+                    b.HasIndex("GoodID");
+
+                    b.HasIndex("PurchaseId");
+
+                    b.ToTable("PurchasesGoods");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Login")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("Role")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.BuildComponent", b =>
+                {
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Build", "Build")
+                        .WithMany("Components")
+                        .HasForeignKey("BuildId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Component", "Component")
+                        .WithMany()
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Build");
+
+                    b.Navigation("Component");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Comment", b =>
+                {
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Build", "Build")
+                        .WithMany()
+                        .HasForeignKey("BuildID")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Build");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Purchase", b =>
+                {
+                    b.HasOne("HardwareShopDatabaseImplement.Models.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserID")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.PurchaseBuild", b =>
+                {
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Build", "Build")
+                        .WithMany("Purchases")
+                        .HasForeignKey("BuildId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Purchase", "Purchase")
+                        .WithMany("Builds")
+                        .HasForeignKey("PurchaseId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Build");
+
+                    b.Navigation("Purchase");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.PurchaseGood", b =>
+                {
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Good", "Good")
+                        .WithMany()
+                        .HasForeignKey("GoodID")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("HardwareShopDatabaseImplement.Models.Purchase", "Purchase")
+                        .WithMany("Goods")
+                        .HasForeignKey("PurchaseId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Good");
+
+                    b.Navigation("Purchase");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Build", b =>
+                {
+                    b.Navigation("Components");
+
+                    b.Navigation("Purchases");
+                });
+
+            modelBuilder.Entity("HardwareShopDatabaseImplement.Models.Purchase", b =>
+                {
+                    b.Navigation("Builds");
+
+                    b.Navigation("Goods");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

HardwareShop/HardwareShopDatabaseImplement/Models/Purchase.cs

@@ -20,8 +20,10 @@ namespace HardwareShopDatabaseImplement.Models
 
         public virtual User User { get; set; }
 
+        [NotMapped]
         public Dictionary<int, (IBuildModel, int)>? PurchaseBuilds { get; set; }
 
+        [NotMapped]
         public Dictionary<int, (IGoodModel, int)> PurchaseGoods { get; set; } = new();
 
 

HardwareShop/HardwareShopDatabaseImplement/Models/PurchaseBuild.cs

@@ -11,12 +11,8 @@ namespace HardwareShopDatabaseImplement.Models
     public class PurchaseBuild
     {
 
-        [Key]
-        [Column(Order = 1)]
         public int BuildID { get; set; }
 
-        [Key]
-        [Column(Order = 2)]
         public int PurchaseID { get; set; }
 
         [Required]

HardwareShop/HardwareShopDatabaseImplement/Models/PurchaseGood.cs

@@ -11,12 +11,8 @@ namespace HardwareShopDatabaseImplement.Models
     public class PurchaseGood
     {
 
-        [Key]
-        [Column(Order = 1)]
         public int PurchaseID { get; set; }
 
-        [Key]
-        [Column(Order = 2)]
         public int GoodID { get; set; }
 
         [Required]