diff --git a/Course/DatabaseImplement/DatabaseImplement.csproj b/Course/DatabaseImplement/DatabaseImplement.csproj
index 184aa5f..b4206ce 100644
--- a/Course/DatabaseImplement/DatabaseImplement.csproj
+++ b/Course/DatabaseImplement/DatabaseImplement.csproj
@@ -8,11 +8,11 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.29" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="6.0.29" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="6.0.29">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="6.0.22" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Course/DatabaseImplement/FactoryGoWorkDatabase.cs b/Course/DatabaseImplement/FactoryGoWorkDatabase.cs
index d3cfb8d..c69a229 100644
--- a/Course/DatabaseImplement/FactoryGoWorkDatabase.cs
+++ b/Course/DatabaseImplement/FactoryGoWorkDatabase.cs
@@ -6,7 +6,9 @@ namespace DatabaseImplement
 	{
 		protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
 		{
-			optionsBuilder.UseNpgsql("Host=localhost;Port=5432;Database=GoWorkDB;Username=postgres;Password=postgres");
+			if (optionsBuilder.IsConfigured == false)
+				optionsBuilder.UseSqlServer("Data Source=.\\SQLEXPRESS;Initial Catalog=FactoryGoWorkDB;Integrated Security=True;MultipleActiveResultSets=True;;TrustServerCertificate=True");
+			base.OnConfiguring(optionsBuilder);
 		}
 
 		public virtual DbSet<Product> Products { get; set; }
diff --git a/Course/DatabaseImplement/Migrations/20240427181429_init.Designer.cs b/Course/DatabaseImplement/Migrations/20240427200038_somestrange.Designer.cs
similarity index 78%
rename from Course/DatabaseImplement/Migrations/20240427181429_init.Designer.cs
rename to Course/DatabaseImplement/Migrations/20240427200038_somestrange.Designer.cs
index 496ab3b..0d99a3d 100644
--- a/Course/DatabaseImplement/Migrations/20240427181429_init.Designer.cs
+++ b/Course/DatabaseImplement/Migrations/20240427200038_somestrange.Designer.cs
@@ -3,44 +3,44 @@ using System;
 using DatabaseImplement;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
 using Microsoft.EntityFrameworkCore.Migrations;
 using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
-using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
 
 #nullable disable
 
 namespace DatabaseImplement.Migrations
 {
     [DbContext(typeof(FactoryGoWorkDatabase))]
-    [Migration("20240427181429_init")]
-    partial class init
+    [Migration("20240427200038_somestrange")]
+    partial class somestrange
     {
         protected override void BuildTargetModel(ModelBuilder modelBuilder)
         {
 #pragma warning disable 612, 618
             modelBuilder
                 .HasAnnotation("ProductVersion", "6.0.29")
-                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+                .HasAnnotation("Relational:MaxIdentifierLength", 128);
 
-            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder, 1L, 1);
 
             modelBuilder.Entity("DatabaseImplement.Models.Detail", b =>
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<double>("Cost")
-                        .HasColumnType("double precision");
+                        .HasColumnType("float");
 
                     b.Property<string>("Name")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int>("UserId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -53,18 +53,18 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<int>("Count")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<int>("DetailId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<int>("ProductId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -79,15 +79,15 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<int>("DetailId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<int>("ProductionId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -102,25 +102,25 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<string>("Email")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Login")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Name")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Password")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.HasKey("Id");
 
@@ -131,25 +131,25 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<string>("Email")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Login")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Name")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Password")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.HasKey("Id");
 
@@ -160,20 +160,20 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<string>("Country")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Title")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int>("UserId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -186,22 +186,22 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<double>("Cost")
-                        .HasColumnType("double precision");
+                        .HasColumnType("float");
 
                     b.Property<int?>("MachineId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<string>("Name")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int>("UserId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -216,19 +216,19 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<double>("Cost")
-                        .HasColumnType("double precision");
+                        .HasColumnType("float");
 
                     b.Property<string>("Name")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int>("UserId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -241,26 +241,26 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<DateTime>("Birthday")
-                        .HasColumnType("timestamp with time zone");
+                        .HasColumnType("datetime2");
 
                     b.Property<string>("Name")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<double>("Salary")
-                        .HasColumnType("double precision");
+                        .HasColumnType("float");
 
                     b.Property<string>("Specialization")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int>("UserId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -273,15 +273,15 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<int>("MachineId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<int>("WorkerId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -294,15 +294,15 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<int>("WorkerId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<int>("WorkshopId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -317,28 +317,28 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<string>("Address")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Director")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int?>("ProductionId")
                         .IsRequired()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<string>("Title")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int>("UserId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
diff --git a/Course/DatabaseImplement/Migrations/20240427181429_init.cs b/Course/DatabaseImplement/Migrations/20240427200038_somestrange.cs
similarity index 66%
rename from Course/DatabaseImplement/Migrations/20240427181429_init.cs
rename to Course/DatabaseImplement/Migrations/20240427200038_somestrange.cs
index dfc4705..1d7d553 100644
--- a/Course/DatabaseImplement/Migrations/20240427181429_init.cs
+++ b/Course/DatabaseImplement/Migrations/20240427200038_somestrange.cs
@@ -1,12 +1,11 @@
 using System;
 using Microsoft.EntityFrameworkCore.Migrations;
-using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
 
 #nullable disable
 
 namespace DatabaseImplement.Migrations
 {
-    public partial class init : Migration
+    public partial class somestrange : Migration
     {
         protected override void Up(MigrationBuilder migrationBuilder)
         {
@@ -14,12 +13,12 @@ namespace DatabaseImplement.Migrations
                 name: "Guarantors",
                 columns: table => new
                 {
-                    Id = table.Column<int>(type: "integer", nullable: false)
-                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
-                    Email = table.Column<string>(type: "text", nullable: false),
-                    Name = table.Column<string>(type: "text", nullable: false),
-                    Login = table.Column<string>(type: "text", nullable: false),
-                    Password = table.Column<string>(type: "text", nullable: false)
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Email = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Name = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Login = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Password = table.Column<string>(type: "nvarchar(max)", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -30,12 +29,12 @@ namespace DatabaseImplement.Migrations
                 name: "Implementers",
                 columns: table => new
                 {
-                    Id = table.Column<int>(type: "integer", nullable: false)
-                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
-                    Email = table.Column<string>(type: "text", nullable: false),
-                    Name = table.Column<string>(type: "text", nullable: false),
-                    Login = table.Column<string>(type: "text", nullable: false),
-                    Password = table.Column<string>(type: "text", nullable: false)
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Email = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Name = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Login = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Password = table.Column<string>(type: "nvarchar(max)", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -46,11 +45,11 @@ namespace DatabaseImplement.Migrations
                 name: "Machines",
                 columns: table => new
                 {
-                    Id = table.Column<int>(type: "integer", nullable: false)
-                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
-                    Title = table.Column<string>(type: "text", nullable: false),
-                    Country = table.Column<string>(type: "text", nullable: false),
-                    UserId = table.Column<int>(type: "integer", nullable: false)
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Title = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Country = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    UserId = table.Column<int>(type: "int", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -67,13 +66,13 @@ namespace DatabaseImplement.Migrations
                 name: "Workers",
                 columns: table => new
                 {
-                    Id = table.Column<int>(type: "integer", nullable: false)
-                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
-                    Name = table.Column<string>(type: "text", nullable: false),
-                    Birthday = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
-                    Specialization = table.Column<string>(type: "text", nullable: false),
-                    Salary = table.Column<double>(type: "double precision", nullable: false),
-                    UserId = table.Column<int>(type: "integer", nullable: false)
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Name = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Birthday = table.Column<DateTime>(type: "datetime2", nullable: false),
+                    Specialization = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Salary = table.Column<double>(type: "float", nullable: false),
+                    UserId = table.Column<int>(type: "int", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -90,11 +89,11 @@ namespace DatabaseImplement.Migrations
                 name: "Details",
                 columns: table => new
                 {
-                    Id = table.Column<int>(type: "integer", nullable: false)
-                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
-                    Name = table.Column<string>(type: "text", nullable: false),
-                    Cost = table.Column<double>(type: "double precision", nullable: false),
-                    UserId = table.Column<int>(type: "integer", nullable: false)
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Name = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Cost = table.Column<double>(type: "float", nullable: false),
+                    UserId = table.Column<int>(type: "int", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -111,11 +110,11 @@ namespace DatabaseImplement.Migrations
                 name: "Productions",
                 columns: table => new
                 {
-                    Id = table.Column<int>(type: "integer", nullable: false)
-                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
-                    Name = table.Column<string>(type: "text", nullable: false),
-                    Cost = table.Column<double>(type: "double precision", nullable: false),
-                    UserId = table.Column<int>(type: "integer", nullable: false)
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Name = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Cost = table.Column<double>(type: "float", nullable: false),
+                    UserId = table.Column<int>(type: "int", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -132,12 +131,12 @@ namespace DatabaseImplement.Migrations
                 name: "Products",
                 columns: table => new
                 {
-                    Id = table.Column<int>(type: "integer", nullable: false)
-                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
-                    Name = table.Column<string>(type: "text", nullable: false),
-                    Cost = table.Column<double>(type: "double precision", nullable: false),
-                    UserId = table.Column<int>(type: "integer", nullable: false),
-                    MachineId = table.Column<int>(type: "integer", nullable: true)
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Name = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Cost = table.Column<double>(type: "float", nullable: false),
+                    UserId = table.Column<int>(type: "int", nullable: false),
+                    MachineId = table.Column<int>(type: "int", nullable: true)
                 },
                 constraints: table =>
                 {
@@ -159,10 +158,10 @@ namespace DatabaseImplement.Migrations
                 name: "WorkerMachines",
                 columns: table => new
                 {
-                    Id = table.Column<int>(type: "integer", nullable: false)
-                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
-                    WorkerId = table.Column<int>(type: "integer", nullable: false),
-                    MachineId = table.Column<int>(type: "integer", nullable: false)
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    WorkerId = table.Column<int>(type: "int", nullable: false),
+                    MachineId = table.Column<int>(type: "int", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -172,23 +171,23 @@ namespace DatabaseImplement.Migrations
                         column: x => x.WorkerId,
                         principalTable: "Machines",
                         principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
+                        onDelete: ReferentialAction.NoAction);
                     table.ForeignKey(
                         name: "FK_WorkerMachines_Workers_WorkerId",
                         column: x => x.WorkerId,
                         principalTable: "Workers",
                         principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
+                        onDelete: ReferentialAction.NoAction);
                 });
 
             migrationBuilder.CreateTable(
                 name: "DetailProductions",
                 columns: table => new
                 {
-                    Id = table.Column<int>(type: "integer", nullable: false)
-                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
-                    DetailId = table.Column<int>(type: "integer", nullable: false),
-                    ProductionId = table.Column<int>(type: "integer", nullable: false)
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    DetailId = table.Column<int>(type: "int", nullable: false),
+                    ProductionId = table.Column<int>(type: "int", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -198,26 +197,26 @@ namespace DatabaseImplement.Migrations
                         column: x => x.DetailId,
                         principalTable: "Details",
                         principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
+                        onDelete: ReferentialAction.NoAction);
                     table.ForeignKey(
                         name: "FK_DetailProductions_Productions_ProductionId",
                         column: x => x.ProductionId,
                         principalTable: "Productions",
                         principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
+                        onDelete: ReferentialAction.NoAction);
                 });
 
             migrationBuilder.CreateTable(
                 name: "Workshops",
                 columns: table => new
                 {
-                    Id = table.Column<int>(type: "integer", nullable: false)
-                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
-                    Title = table.Column<string>(type: "text", nullable: false),
-                    Address = table.Column<string>(type: "text", nullable: false),
-                    Director = table.Column<string>(type: "text", nullable: false),
-                    UserId = table.Column<int>(type: "integer", nullable: false),
-                    ProductionId = table.Column<int>(type: "integer", nullable: false)
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    Title = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Address = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Director = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    UserId = table.Column<int>(type: "int", nullable: false),
+                    ProductionId = table.Column<int>(type: "int", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -240,11 +239,11 @@ namespace DatabaseImplement.Migrations
                 name: "DetailProducts",
                 columns: table => new
                 {
-                    Id = table.Column<int>(type: "integer", nullable: false)
-                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
-                    DetailId = table.Column<int>(type: "integer", nullable: false),
-                    ProductId = table.Column<int>(type: "integer", nullable: false),
-                    Count = table.Column<int>(type: "integer", nullable: false)
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    DetailId = table.Column<int>(type: "int", nullable: false),
+                    ProductId = table.Column<int>(type: "int", nullable: false),
+                    Count = table.Column<int>(type: "int", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -254,23 +253,23 @@ namespace DatabaseImplement.Migrations
                         column: x => x.DetailId,
                         principalTable: "Details",
                         principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
+                        onDelete: ReferentialAction.NoAction);
                     table.ForeignKey(
                         name: "FK_DetailProducts_Products_ProductId",
                         column: x => x.ProductId,
                         principalTable: "Products",
                         principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
+                        onDelete: ReferentialAction.NoAction);
                 });
 
             migrationBuilder.CreateTable(
                 name: "WorkerWorkshops",
                 columns: table => new
                 {
-                    Id = table.Column<int>(type: "integer", nullable: false)
-                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
-                    WorkerId = table.Column<int>(type: "integer", nullable: false),
-                    WorkshopId = table.Column<int>(type: "integer", nullable: false)
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    WorkerId = table.Column<int>(type: "int", nullable: false),
+                    WorkshopId = table.Column<int>(type: "int", nullable: false)
                 },
                 constraints: table =>
                 {
@@ -280,13 +279,13 @@ namespace DatabaseImplement.Migrations
                         column: x => x.WorkerId,
                         principalTable: "Workers",
                         principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
+                        onDelete: ReferentialAction.NoAction);
                     table.ForeignKey(
                         name: "FK_WorkerWorkshops_Workshops_WorkshopId",
                         column: x => x.WorkshopId,
                         principalTable: "Workshops",
                         principalColumn: "Id",
-                        onDelete: ReferentialAction.Cascade);
+                        onDelete: ReferentialAction.NoAction);
                 });
 
             migrationBuilder.CreateIndex(
diff --git a/Course/DatabaseImplement/Migrations/FactoryGoWorkDatabaseModelSnapshot.cs b/Course/DatabaseImplement/Migrations/FactoryGoWorkDatabaseModelSnapshot.cs
index d2202fe..1be806c 100644
--- a/Course/DatabaseImplement/Migrations/FactoryGoWorkDatabaseModelSnapshot.cs
+++ b/Course/DatabaseImplement/Migrations/FactoryGoWorkDatabaseModelSnapshot.cs
@@ -3,8 +3,8 @@ using System;
 using DatabaseImplement;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
 using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
-using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
 
 #nullable disable
 
@@ -18,27 +18,27 @@ namespace DatabaseImplement.Migrations
 #pragma warning disable 612, 618
             modelBuilder
                 .HasAnnotation("ProductVersion", "6.0.29")
-                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+                .HasAnnotation("Relational:MaxIdentifierLength", 128);
 
-            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder, 1L, 1);
 
             modelBuilder.Entity("DatabaseImplement.Models.Detail", b =>
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<double>("Cost")
-                        .HasColumnType("double precision");
+                        .HasColumnType("float");
 
                     b.Property<string>("Name")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int>("UserId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -51,18 +51,18 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<int>("Count")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<int>("DetailId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<int>("ProductId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -77,15 +77,15 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<int>("DetailId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<int>("ProductionId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -100,25 +100,25 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<string>("Email")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Login")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Name")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Password")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.HasKey("Id");
 
@@ -129,25 +129,25 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<string>("Email")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Login")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Name")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Password")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.HasKey("Id");
 
@@ -158,20 +158,20 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<string>("Country")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Title")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int>("UserId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -184,22 +184,22 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<double>("Cost")
-                        .HasColumnType("double precision");
+                        .HasColumnType("float");
 
                     b.Property<int?>("MachineId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<string>("Name")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int>("UserId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -214,19 +214,19 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<double>("Cost")
-                        .HasColumnType("double precision");
+                        .HasColumnType("float");
 
                     b.Property<string>("Name")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int>("UserId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -239,26 +239,26 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<DateTime>("Birthday")
-                        .HasColumnType("timestamp with time zone");
+                        .HasColumnType("datetime2");
 
                     b.Property<string>("Name")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<double>("Salary")
-                        .HasColumnType("double precision");
+                        .HasColumnType("float");
 
                     b.Property<string>("Specialization")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int>("UserId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -271,15 +271,15 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<int>("MachineId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<int>("WorkerId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -292,15 +292,15 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<int>("WorkerId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<int>("WorkshopId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");
 
@@ -315,28 +315,28 @@ namespace DatabaseImplement.Migrations
                 {
                     b.Property<int>("Id")
                         .ValueGeneratedOnAdd()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
-                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
 
                     b.Property<string>("Address")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<string>("Director")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int?>("ProductionId")
                         .IsRequired()
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.Property<string>("Title")
                         .IsRequired()
-                        .HasColumnType("text");
+                        .HasColumnType("nvarchar(max)");
 
                     b.Property<int>("UserId")
-                        .HasColumnType("integer");
+                        .HasColumnType("int");
 
                     b.HasKey("Id");