diff --git a/Blazor/Blazor/Models/Administrator.cs b/Blazor/Blazor/Models/Administrator.cs
index 1fbe03e..a1c6b5e 100644
--- a/Blazor/Blazor/Models/Administrator.cs
+++ b/Blazor/Blazor/Models/Administrator.cs
@@ -2,5 +2,15 @@
 {
     public class Administrator
     {
+        public int Id { get; private set; }
+        public string Username { get; private set; }
+        public string hashedPassword { get; set; }
+
+        public Administrator(int id, string username, string hashedPassword)
+        {
+            Id = id;
+            Username = username;
+            this.hashedPassword = hashedPassword;
+        }
     }
 }
diff --git a/Blazor/Blazor/Models/Answer.cs b/Blazor/Blazor/Models/Answer.cs
index 3922505..a27ec6f 100644
--- a/Blazor/Blazor/Models/Answer.cs
+++ b/Blazor/Blazor/Models/Answer.cs
@@ -2,5 +2,15 @@
 {
     public class Answer
     {
+        public int Id { get; private set; }
+        public string Content { get; set; }
+        public int IdQuestion { get; private set; }
+
+        public Answer(int id, string content, int idQuestion)
+        {
+            Id = id;
+            Content = content;
+            IdQuestion = idQuestion;
+        }
     }
 }
diff --git a/Blazor/Blazor/Models/Player.cs b/Blazor/Blazor/Models/Player.cs
index 2cd44ce..e5ec93d 100644
--- a/Blazor/Blazor/Models/Player.cs
+++ b/Blazor/Blazor/Models/Player.cs
@@ -2,5 +2,16 @@
 {
     public class Player
     {
+        public int Id { get; private set; }
+        public string Nickname { get; private set; }
+        public string HashedPassword { get; set; }
+
+        public Player(int id, string nickname, string hashedPassword)
+        {
+            Id = id;
+            Nickname = nickname;
+            HashedPassword = hashedPassword;
+        }
+
     }
 }
diff --git a/Blazor/Blazor/Models/Question.cs b/Blazor/Blazor/Models/Question.cs
new file mode 100644
index 0000000..dd6d8ef
--- /dev/null
+++ b/Blazor/Blazor/Models/Question.cs
@@ -0,0 +1,22 @@
+namespace Blazor.Models
+{
+    public class Question
+    {
+        public int Id { get; private set; }
+        public string Content { get; set; }
+        public int IdChapter { get; set; }
+        public int IdAnswerGood { get; set; }
+        public int Difficulty { get; set; }
+        public int nbFails { get; set; }
+
+        public Question(int id, string content, int idChapter, int idAnswerGood, int difficulty, int nbFails = 0)
+        {
+            Id = id;
+            Content = content;
+            IdChapter = idChapter;
+            IdAnswerGood = idAnswerGood;
+            Difficulty = difficulty;
+            this.nbFails = nbFails;
+        }
+    }
+}