first commit

backend/Models/UserQuizAttempt.cs

@@ -0,0 +1,28 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace backend.Models;
+
+public class UserQuizAttempt
+{
+    [Key]
+    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+    public int Id { get; set; }
+
+    [Required]
+    public int UserId { get; set; }
+
+    public int ParticipationPoints { get; set; }
+
+    public int CorrectAnswersCount { get; set; }
+
+    public int TotalQuizPoints { get; set; }
+
+    public DateTime CompletedAt { get; set; } = DateTime.UtcNow;
+
+    // Navigation
+    [ForeignKey(nameof(UserId))]
+    public User User { get; set; } = null!;
+
+    public ICollection<UserQuizAnswer> Answers { get; set; } = new List<UserQuizAnswer>();
+}