diff --git a/backend/Api/DBAccess/DBAccess.cs b/backend/Api/DBAccess/DBAccess.cs
index 3e9dd6a..39f5068 100644
--- a/backend/Api/DBAccess/DBAccess.cs
+++ b/backend/Api/DBAccess/DBAccess.cs
@@ -315,11 +315,7 @@ namespace Api.DBAccess
         /// <returns></returns>
         public async Task<List<TemperatureLogs>> ReadLogs(int deviceId, DateTimeRange range)
         {
-            return _context.TemperatureLogs
-                .Where(log => log.DeviceId == deviceId)
-                .Where(log => log.Date > range.DateTimeStart)
-                .Where(log => log.Date < range.DateTimeEnd)
-                .ToList();
+            return _context.Devices.Include(d => d.Logs.Where(l => l.Date > range.DateTimeStart && l.Date < range.DateTimeEnd)).Where(d => d.Id == deviceId).FirstOrDefault().Logs;
         }
 
         /// <summary>
diff --git a/backend/Api/DBAccess/DBContext.cs b/backend/Api/DBAccess/DBContext.cs
index df6600e..993a779 100644
--- a/backend/Api/DBAccess/DBContext.cs
+++ b/backend/Api/DBAccess/DBContext.cs
@@ -11,8 +11,6 @@ namespace Api
 
         public DbSet<Device> Devices { get; set; }
 
-        public DbSet<TemperatureLogs> TemperatureLogs { get; set; }
-
         public DBContext(DbContextOptions<DBContext> options) : base(options) { }
     }
 }
diff --git a/backend/Api/Migrations/20250403070932_RemovedLogsFromDbset.Designer.cs b/backend/Api/Migrations/20250403070932_RemovedLogsFromDbset.Designer.cs
new file mode 100644
index 0000000..90225f9
--- /dev/null
+++ b/backend/Api/Migrations/20250403070932_RemovedLogsFromDbset.Designer.cs
@@ -0,0 +1,138 @@
+// <auto-generated />
+using System;
+using Api;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace Api.Migrations
+{
+    [DbContext(typeof(DBContext))]
+    [Migration("20250403070932_RemovedLogsFromDbset")]
+    partial class RemovedLogsFromDbset
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder.HasAnnotation("ProductVersion", "9.0.3");
+
+            modelBuilder.Entity("Api.Models.Devices.Device", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("ReferenceId")
+                        .HasColumnType("TEXT");
+
+                    b.Property<double>("TempHigh")
+                        .HasColumnType("REAL");
+
+                    b.Property<double>("TempLow")
+                        .HasColumnType("REAL");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("INTEGER");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Devices");
+                });
+
+            modelBuilder.Entity("Api.Models.TemperatureLogs", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int?>("DeviceId")
+                        .HasColumnType("INTEGER");
+
+                    b.Property<double>("TempHigh")
+                        .HasColumnType("REAL");
+
+                    b.Property<double>("TempLow")
+                        .HasColumnType("REAL");
+
+                    b.Property<double>("Temperature")
+                        .HasColumnType("REAL");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("DeviceId");
+
+                    b.ToTable("TemperatureLogs");
+                });
+
+            modelBuilder.Entity("Api.Models.Users.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("INTEGER");
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("RefreshToken")
+                        .HasColumnType("TEXT");
+
+                    b.Property<DateTime>("RefreshTokenExpiresAt")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("Salt")
+                        .HasColumnType("TEXT");
+
+                    b.Property<string>("UserName")
+                        .IsRequired()
+                        .HasColumnType("TEXT");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("Api.Models.Devices.Device", b =>
+                {
+                    b.HasOne("Api.Models.Users.User", null)
+                        .WithMany("Devices")
+                        .HasForeignKey("UserId");
+                });
+
+            modelBuilder.Entity("Api.Models.TemperatureLogs", b =>
+                {
+                    b.HasOne("Api.Models.Devices.Device", null)
+                        .WithMany("Logs")
+                        .HasForeignKey("DeviceId");
+                });
+
+            modelBuilder.Entity("Api.Models.Devices.Device", b =>
+                {
+                    b.Navigation("Logs");
+                });
+
+            modelBuilder.Entity("Api.Models.Users.User", b =>
+                {
+                    b.Navigation("Devices");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}
diff --git a/backend/Api/Migrations/20250403070932_RemovedLogsFromDbset.cs b/backend/Api/Migrations/20250403070932_RemovedLogsFromDbset.cs
new file mode 100644
index 0000000..17c98c1
--- /dev/null
+++ b/backend/Api/Migrations/20250403070932_RemovedLogsFromDbset.cs
@@ -0,0 +1,59 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Api.Migrations
+{
+    /// <inheritdoc />
+    public partial class RemovedLogsFromDbset : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_TemperatureLogs_Devices_DeviceId",
+                table: "TemperatureLogs");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "DeviceId",
+                table: "TemperatureLogs",
+                type: "INTEGER",
+                nullable: true,
+                oldClrType: typeof(int),
+                oldType: "INTEGER");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_TemperatureLogs_Devices_DeviceId",
+                table: "TemperatureLogs",
+                column: "DeviceId",
+                principalTable: "Devices",
+                principalColumn: "Id");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_TemperatureLogs_Devices_DeviceId",
+                table: "TemperatureLogs");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "DeviceId",
+                table: "TemperatureLogs",
+                type: "INTEGER",
+                nullable: false,
+                defaultValue: 0,
+                oldClrType: typeof(int),
+                oldType: "INTEGER",
+                oldNullable: true);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_TemperatureLogs_Devices_DeviceId",
+                table: "TemperatureLogs",
+                column: "DeviceId",
+                principalTable: "Devices",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+        }
+    }
+}
diff --git a/backend/Api/Migrations/DBContextModelSnapshot.cs b/backend/Api/Migrations/DBContextModelSnapshot.cs
index ebab47a..f48f59b 100644
--- a/backend/Api/Migrations/DBContextModelSnapshot.cs
+++ b/backend/Api/Migrations/DBContextModelSnapshot.cs
@@ -55,7 +55,7 @@ namespace Api.Migrations
                     b.Property<DateTime>("Date")
                         .HasColumnType("TEXT");
 
-                    b.Property<int>("DeviceId")
+                    b.Property<int?>("DeviceId")
                         .HasColumnType("INTEGER");
 
                     b.Property<double>("TempHigh")
@@ -117,9 +117,7 @@ namespace Api.Migrations
                 {
                     b.HasOne("Api.Models.Devices.Device", null)
                         .WithMany("Logs")
-                        .HasForeignKey("DeviceId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
+                        .HasForeignKey("DeviceId");
                 });
 
             modelBuilder.Entity("Api.Models.Devices.Device", b =>
diff --git a/backend/Api/Models/TemperatureLogs.cs b/backend/Api/Models/TemperatureLogs.cs
index 9216987..16911a2 100644
--- a/backend/Api/Models/TemperatureLogs.cs
+++ b/backend/Api/Models/TemperatureLogs.cs
@@ -4,8 +4,6 @@
     {
         public int Id { get; set; }
 
-        public int DeviceId { get; set; }
-
         public double Temperature { get; set; }
 
         public DateTime Date { get; set; }
diff --git a/docs/Domainmodel.png b/docs/Domainmodel.png
new file mode 100644
index 0000000..2dec779
Binary files /dev/null and b/docs/Domainmodel.png differ
diff --git a/docs/TempAlarmModelDiagram.png b/docs/TempAlarmModelDiagram.png
index f607443..af323e5 100644
Binary files a/docs/TempAlarmModelDiagram.png and b/docs/TempAlarmModelDiagram.png differ