diff --git a/SurveyBackend/SurveyBackend.Infrastructure/Data/Migrations/20250418123442_Initial.Designer.cs b/SurveyBackend/SurveyBackend.Infrastructure/Data/Migrations/20250418123442_Initial.Designer.cs
new file mode 100644
index 0000000..b8b673d
--- /dev/null
+++ b/SurveyBackend/SurveyBackend.Infrastructure/Data/Migrations/20250418123442_Initial.Designer.cs
@@ -0,0 +1,321 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using SurveyBackend.Infrastructure.Data;
+
+#nullable disable
+
+namespace SurveyBackend.Infrastructure.Data.Migrations
+{
+    [DbContext(typeof(ApplicationDbContext))]
+    [Migration("20250418123442_Initial")]
+    partial class Initial
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "8.0.15");
+
+            modelBuilder.Entity("GroupUser", b =>
+                {
+                    b.Property<int>("GroupsId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("UsersId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("GroupsId", "UsersId");
+
+                    b.HasIndex("UsersId");
+
+                    b.ToTable("GroupUser");
+                });
+
+            modelBuilder.Entity("SurveyBackend.Core.Models.Group", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Label")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Groups");
+                });
+
+            modelBuilder.Entity("SurveyBackend.Core.Models.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("FirstName")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("LastName")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Answer", b =>
+                {
+                    b.Property<int>("CompletionId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("QuestionId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("AnswerText")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("CompletionId", "QuestionId");
+
+                    b.HasIndex("QuestionId");
+
+                    b.ToTable("Answers");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.AnswerVariant", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int?>("MultipleAnswerQuestionId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("QuestionId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int?>("SingleAnswerQuestionId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Text")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("MultipleAnswerQuestionId");
+
+                    b.HasIndex("QuestionId");
+
+                    b.HasIndex("SingleAnswerQuestionId");
+
+                    b.ToTable("AnswerVariant");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Completion", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("FinishedAt")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("SurveyId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SurveyId");
+
+                    b.ToTable("Completions");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionBase", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Discriminator")
+                        .IsRequired()
+                        .HasMaxLength(34)
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("SurveyId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SurveyId");
+
+                    b.ToTable("Questions");
+
+                    b.HasDiscriminator().HasValue("QuestionBase");
+
+                    b.UseTphMappingStrategy();
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Survey", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Surveys");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionVariants.MultipleAnswerQuestion", b =>
+                {
+                    b.HasBaseType("SurveyLib.Core.Models.QuestionBase");
+
+                    b.HasDiscriminator().HasValue("MultipleAnswerQuestion");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionVariants.SingleAnswerQuestion", b =>
+                {
+                    b.HasBaseType("SurveyLib.Core.Models.QuestionBase");
+
+                    b.HasDiscriminator().HasValue("SingleAnswerQuestion");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionVariants.TextQuestion", b =>
+                {
+                    b.HasBaseType("SurveyLib.Core.Models.QuestionBase");
+
+                    b.HasDiscriminator().HasValue("TextQuestion");
+                });
+
+            modelBuilder.Entity("GroupUser", b =>
+                {
+                    b.HasOne("SurveyBackend.Core.Models.Group", null)
+                        .WithMany()
+                        .HasForeignKey("GroupsId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SurveyBackend.Core.Models.User", null)
+                        .WithMany()
+                        .HasForeignKey("UsersId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Answer", b =>
+                {
+                    b.HasOne("SurveyLib.Core.Models.Completion", "Completion")
+                        .WithMany("Answers")
+                        .HasForeignKey("CompletionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SurveyLib.Core.Models.QuestionBase", "Question")
+                        .WithMany("Answers")
+                        .HasForeignKey("QuestionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Completion");
+
+                    b.Navigation("Question");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.AnswerVariant", b =>
+                {
+                    b.HasOne("SurveyLib.Core.Models.QuestionVariants.MultipleAnswerQuestion", null)
+                        .WithMany("AnswerVariants")
+                        .HasForeignKey("MultipleAnswerQuestionId");
+
+                    b.HasOne("SurveyLib.Core.Models.QuestionBase", "Question")
+                        .WithMany()
+                        .HasForeignKey("QuestionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SurveyLib.Core.Models.QuestionVariants.SingleAnswerQuestion", null)
+                        .WithMany("AnswerVariants")
+                        .HasForeignKey("SingleAnswerQuestionId");
+
+                    b.Navigation("Question");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Completion", b =>
+                {
+                    b.HasOne("SurveyLib.Core.Models.Survey", "Survey")
+                        .WithMany("Completions")
+                        .HasForeignKey("SurveyId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Survey");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionBase", b =>
+                {
+                    b.HasOne("SurveyLib.Core.Models.Survey", "Survey")
+                        .WithMany("Questions")
+                        .HasForeignKey("SurveyId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Survey");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Completion", b =>
+                {
+                    b.Navigation("Answers");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionBase", b =>
+                {
+                    b.Navigation("Answers");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Survey", b =>
+                {
+                    b.Navigation("Completions");
+
+                    b.Navigation("Questions");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionVariants.MultipleAnswerQuestion", b =>
+                {
+                    b.Navigation("AnswerVariants");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionVariants.SingleAnswerQuestion", b =>
+                {
+                    b.Navigation("AnswerVariants");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/SurveyBackend/SurveyBackend.Infrastructure/Data/Migrations/20250418123442_Initial.cs b/SurveyBackend/SurveyBackend.Infrastructure/Data/Migrations/20250418123442_Initial.cs
new file mode 100644
index 0000000..26fbf8b
--- /dev/null
+++ b/SurveyBackend/SurveyBackend.Infrastructure/Data/Migrations/20250418123442_Initial.cs
@@ -0,0 +1,243 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SurveyBackend.Infrastructure.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class Initial : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Groups",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Label = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Groups", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Surveys",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Title = table.Column<string>(type: "TEXT", nullable: false),
+                    Description = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Surveys", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Users",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    Email = table.Column<string>(type: "TEXT", nullable: false),
+                    FirstName = table.Column<string>(type: "TEXT", nullable: false),
+                    LastName = table.Column<string>(type: "TEXT", nullable: false),
+                    Password = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Users", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Completions",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    SurveyId = table.Column<int>(type: "INTEGER", nullable: false),
+                    FinishedAt = table.Column<DateTime>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Completions", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Completions_Surveys_SurveyId",
+                        column: x => x.SurveyId,
+                        principalTable: "Surveys",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Questions",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    SurveyId = table.Column<int>(type: "INTEGER", nullable: false),
+                    Title = table.Column<string>(type: "TEXT", nullable: false),
+                    Discriminator = table.Column<string>(type: "TEXT", maxLength: 34, nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Questions", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Questions_Surveys_SurveyId",
+                        column: x => x.SurveyId,
+                        principalTable: "Surveys",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "GroupUser",
+                columns: table => new
+                {
+                    GroupsId = table.Column<int>(type: "INTEGER", nullable: false),
+                    UsersId = table.Column<int>(type: "INTEGER", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_GroupUser", x => new { x.GroupsId, x.UsersId });
+                    table.ForeignKey(
+                        name: "FK_GroupUser_Groups_GroupsId",
+                        column: x => x.GroupsId,
+                        principalTable: "Groups",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_GroupUser_Users_UsersId",
+                        column: x => x.UsersId,
+                        principalTable: "Users",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Answers",
+                columns: table => new
+                {
+                    CompletionId = table.Column<int>(type: "INTEGER", nullable: false),
+                    QuestionId = table.Column<int>(type: "INTEGER", nullable: false),
+                    AnswerText = table.Column<string>(type: "TEXT", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Answers", x => new { x.CompletionId, x.QuestionId });
+                    table.ForeignKey(
+                        name: "FK_Answers_Completions_CompletionId",
+                        column: x => x.CompletionId,
+                        principalTable: "Completions",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_Answers_Questions_QuestionId",
+                        column: x => x.QuestionId,
+                        principalTable: "Questions",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AnswerVariant",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "INTEGER", nullable: false)
+                        .Annotation("Sqlite:Autoincrement", true),
+                    QuestionId = table.Column<int>(type: "INTEGER", nullable: false),
+                    Text = table.Column<string>(type: "TEXT", nullable: false),
+                    MultipleAnswerQuestionId = table.Column<int>(type: "INTEGER", nullable: true),
+                    SingleAnswerQuestionId = table.Column<int>(type: "INTEGER", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AnswerVariant", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_AnswerVariant_Questions_MultipleAnswerQuestionId",
+                        column: x => x.MultipleAnswerQuestionId,
+                        principalTable: "Questions",
+                        principalColumn: "Id");
+                    table.ForeignKey(
+                        name: "FK_AnswerVariant_Questions_QuestionId",
+                        column: x => x.QuestionId,
+                        principalTable: "Questions",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_AnswerVariant_Questions_SingleAnswerQuestionId",
+                        column: x => x.SingleAnswerQuestionId,
+                        principalTable: "Questions",
+                        principalColumn: "Id");
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Answers_QuestionId",
+                table: "Answers",
+                column: "QuestionId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AnswerVariant_MultipleAnswerQuestionId",
+                table: "AnswerVariant",
+                column: "MultipleAnswerQuestionId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AnswerVariant_QuestionId",
+                table: "AnswerVariant",
+                column: "QuestionId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AnswerVariant_SingleAnswerQuestionId",
+                table: "AnswerVariant",
+                column: "SingleAnswerQuestionId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Completions_SurveyId",
+                table: "Completions",
+                column: "SurveyId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_GroupUser_UsersId",
+                table: "GroupUser",
+                column: "UsersId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Questions_SurveyId",
+                table: "Questions",
+                column: "SurveyId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Answers");
+
+            migrationBuilder.DropTable(
+                name: "AnswerVariant");
+
+            migrationBuilder.DropTable(
+                name: "GroupUser");
+
+            migrationBuilder.DropTable(
+                name: "Completions");
+
+            migrationBuilder.DropTable(
+                name: "Questions");
+
+            migrationBuilder.DropTable(
+                name: "Groups");
+
+            migrationBuilder.DropTable(
+                name: "Users");
+
+            migrationBuilder.DropTable(
+                name: "Surveys");
+        }
+    }
+}
diff --git a/SurveyBackend/SurveyBackend.Infrastructure/Data/Migrations/ApplicationDbContextModelSnapshot.cs b/SurveyBackend/SurveyBackend.Infrastructure/Data/Migrations/ApplicationDbContextModelSnapshot.cs
new file mode 100644
index 0000000..db4d61e
--- /dev/null
+++ b/SurveyBackend/SurveyBackend.Infrastructure/Data/Migrations/ApplicationDbContextModelSnapshot.cs
@@ -0,0 +1,318 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using SurveyBackend.Infrastructure.Data;
+
+#nullable disable
+
+namespace SurveyBackend.Infrastructure.Data.Migrations
+{
+    [DbContext(typeof(ApplicationDbContext))]
+    partial class ApplicationDbContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "8.0.15");
+
+            modelBuilder.Entity("GroupUser", b =>
+                {
+                    b.Property<int>("GroupsId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("UsersId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("GroupsId", "UsersId");
+
+                    b.HasIndex("UsersId");
+
+                    b.ToTable("GroupUser");
+                });
+
+            modelBuilder.Entity("SurveyBackend.Core.Models.Group", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Label")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Groups");
+                });
+
+            modelBuilder.Entity("SurveyBackend.Core.Models.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("FirstName")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("LastName")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Answer", b =>
+                {
+                    b.Property<int>("CompletionId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("QuestionId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("AnswerText")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("CompletionId", "QuestionId");
+
+                    b.HasIndex("QuestionId");
+
+                    b.ToTable("Answers");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.AnswerVariant", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int?>("MultipleAnswerQuestionId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int>("QuestionId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<int?>("SingleAnswerQuestionId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Text")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("MultipleAnswerQuestionId");
+
+                    b.HasIndex("QuestionId");
+
+                    b.HasIndex("SingleAnswerQuestionId");
+
+                    b.ToTable("AnswerVariant");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Completion", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("FinishedAt")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("SurveyId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SurveyId");
+
+                    b.ToTable("Completions");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionBase", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Discriminator")
+                        .IsRequired()
+                        .HasMaxLength(34)
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("SurveyId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SurveyId");
+
+                    b.ToTable("Questions");
+
+                    b.HasDiscriminator().HasValue("QuestionBase");
+
+                    b.UseTphMappingStrategy();
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Survey", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Surveys");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionVariants.MultipleAnswerQuestion", b =>
+                {
+                    b.HasBaseType("SurveyLib.Core.Models.QuestionBase");
+
+                    b.HasDiscriminator().HasValue("MultipleAnswerQuestion");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionVariants.SingleAnswerQuestion", b =>
+                {
+                    b.HasBaseType("SurveyLib.Core.Models.QuestionBase");
+
+                    b.HasDiscriminator().HasValue("SingleAnswerQuestion");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionVariants.TextQuestion", b =>
+                {
+                    b.HasBaseType("SurveyLib.Core.Models.QuestionBase");
+
+                    b.HasDiscriminator().HasValue("TextQuestion");
+                });
+
+            modelBuilder.Entity("GroupUser", b =>
+                {
+                    b.HasOne("SurveyBackend.Core.Models.Group", null)
+                        .WithMany()
+                        .HasForeignKey("GroupsId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SurveyBackend.Core.Models.User", null)
+                        .WithMany()
+                        .HasForeignKey("UsersId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Answer", b =>
+                {
+                    b.HasOne("SurveyLib.Core.Models.Completion", "Completion")
+                        .WithMany("Answers")
+                        .HasForeignKey("CompletionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SurveyLib.Core.Models.QuestionBase", "Question")
+                        .WithMany("Answers")
+                        .HasForeignKey("QuestionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Completion");
+
+                    b.Navigation("Question");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.AnswerVariant", b =>
+                {
+                    b.HasOne("SurveyLib.Core.Models.QuestionVariants.MultipleAnswerQuestion", null)
+                        .WithMany("AnswerVariants")
+                        .HasForeignKey("MultipleAnswerQuestionId");
+
+                    b.HasOne("SurveyLib.Core.Models.QuestionBase", "Question")
+                        .WithMany()
+                        .HasForeignKey("QuestionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SurveyLib.Core.Models.QuestionVariants.SingleAnswerQuestion", null)
+                        .WithMany("AnswerVariants")
+                        .HasForeignKey("SingleAnswerQuestionId");
+
+                    b.Navigation("Question");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Completion", b =>
+                {
+                    b.HasOne("SurveyLib.Core.Models.Survey", "Survey")
+                        .WithMany("Completions")
+                        .HasForeignKey("SurveyId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Survey");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionBase", b =>
+                {
+                    b.HasOne("SurveyLib.Core.Models.Survey", "Survey")
+                        .WithMany("Questions")
+                        .HasForeignKey("SurveyId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Survey");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Completion", b =>
+                {
+                    b.Navigation("Answers");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionBase", b =>
+                {
+                    b.Navigation("Answers");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.Survey", b =>
+                {
+                    b.Navigation("Completions");
+
+                    b.Navigation("Questions");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionVariants.MultipleAnswerQuestion", b =>
+                {
+                    b.Navigation("AnswerVariants");
+                });
+
+            modelBuilder.Entity("SurveyLib.Core.Models.QuestionVariants.SingleAnswerQuestion", b =>
+                {
+                    b.Navigation("AnswerVariants");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}