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Back/Data/Models/Question.cs

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+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace  Back.Data.Models
+{
+    public class QuestionCategory
+    {
+        public int ID { get; set; }
+        public string Title { get; set; }
+
+        #region Navigation
+        public virtual ICollection<Question> questions { get; set; }
+        #endregion
+    }
+    public class Question
+    {
+        public int ID { get; set; }
+        public int QuestionCategoryID { get; set; }
+        public string Title { get; set; }
+        public string Answer { get; set; }
+        public bool Status { get; set; }
+
+        #region Navigation
+        [ForeignKey("QuestionCategoryID")]
+        public virtual QuestionCategory questionCategory { get; set; }
+        #endregion
+
+    }
+}