diff --git a/backend/src/drawing/models.py b/backend/src/drawing/models.py
index 51c7990..af8865b 100644
--- a/backend/src/drawing/models.py
+++ b/backend/src/drawing/models.py
@@ -11,7 +11,6 @@ import logging as log
 import json
 import enum
 
-from werkzeug.security import generate_password_hash, check_password_hash
 from werkzeug.exceptions import HTTPException, RequestEntityTooLarge
 from werkzeug.utils import secure_filename
 
@@ -22,28 +21,40 @@ from src.db import mydb as db
 #########################################################
 # Class et Methods                                      #
 
-class Role(enum.Enum):
-    Administrateur = "Administrateur"
-    Coach = "Coach"
+class Type_Elem(enum.Enum):
+    ''' Type d'element
+    '''
+    Joueur = "JOUEUR"
+    Ballon = "BALLON"
+    Plot = "PLOT"
+    Piquet = "PIQUET"
+
+class Type_Design(enum.Enum):
+    ''' Type de design
+    '''
+    Circle = "CIRCLE"
+    Rectangle = "RECTANGLE"
 
 class Exercice(db.Model):
+    ''' Exercice Model
+    '''
     __tablename__ = 'Exercices'
 
     ExecID = db.Column(db.Integer, primary_key=True)
     Nom = db.Column(db.String(32), nullable=False, default="")
     Description = db.Column(db.Text, nullable=False, default="")
-    NbJoueurs = db.Column(db.Integer, nullable=False)
-    NbBallons = db.Column(db.Integer, nullable=False)
-    NbPlots = db.Column(db.Integer, nullable=False)
-    NbPiquets = db.Column(db.Integer, nullable=False)
+    NbJoueurs = db.Column(db.Integer, nullable=False, default=0)
+    NbBallons = db.Column(db.Integer, nullable=False, default=0)
+    NbPlots = db.Column(db.Integer, nullable=False, default=0)
+    NbPiquets = db.Column(db.Integer, nullable=False, default=0)
 
     def __init__(self, 
-                 Nom:str='',
-                 Description:str='',
-                 NbJoueurs:int=0, 
-                 NbBallons:int=0, 
-                 NbPlots:int=0,
-                 NbPiquets:int=0) -> None:
+                 Nom:str = '',
+                 Description:str = '',
+                 NbJoueurs:int = 0, 
+                 NbBallons:int = 0, 
+                 NbPlots:int = 0,
+                 NbPiquets:int = 0) -> None:
         ''' constructor '''
         self.Nom = Nom
         self.Description = Description
@@ -53,13 +64,79 @@ class Exercice(db.Model):
         self.NbPiquets = NbPiquets
 
     def as_dict(self):
-        ''' User as dictionnary '''
+        ''' Exercice as dictionnary '''
+        result = {}
+        for c in self.__table__.columns:
+            result[c.name] = getattr(self, c.name)
+        return result
+
+class Element(db.Model):
+    ''' Element Model
+    '''
+    __tablename__ = 'Etapes'
+
+    ElemID = db.Column(db.Integer, primary_key=True)
+    Type = db.Column(db.String(16), nullable=False, default=Type_Elem.Joueur)
+    Moving = db.Column(db.Boolean(), nullable=False, default=False)
+    Id = db.Column(db.Integer, nullable=False)
+    ExecID = db.Column(db.Integer, db.ForeignKey('exercice.ExecID'), nullable=False)
+    
+    def __init__(self,
+                 Type:Type_Elem = Type_Elem.Joueur,
+                 Moving:Boolean = False,
+                 Id:int = 0,
+                 ExecID:int = 0) -> None:
+        ''' constructor '''
+        self.Type = Type
+        self.Moving = Moving
+        self.Id = Id
+        self.ExecID = ExecID
+
+    def as_dict(self):
+        ''' Element as dictionnary '''
+        result = {}
+        for c in self.__table__.columns:
+            result[c.name] = getattr(self, c.name)
+        return result
+
+class Design(db.Model):
+    ''' Design Model
+    '''
+    __tablename__ = 'Designs'
+
+    DesignID = db.Column(db.Integer, primary_key=True)
+    Type = db.Column(db.String(16), nullable=False, default=Type_Design.Circle)
+    X = db.Column(db.Float, nullable=False, default=0.0)
+    Y = db.Column(db.Float, nullable=False, default=0.0)
+    Radius = db.Column(db.Integer, nullable=False, default=0)
+    Width = db.Column(db.Integer, nullable=False, default=0)
+    Height = db.Column(db.Integer, nullable=False, default=0)
+    ElemID = db.Column(db.Integer, db.ForeignKey('element.ElemID'), nullable=False)
+    
+    def __init__(self,
+                 Type:Type_Design = Type_Design.Circle,
+                 X:Float = 0.0,
+                 Y:Float = 0.0,
+                 Radius:int = 0,
+                 Width:int = 0,
+                 Height:int = 0,
+                 ElemID:int = 0) -> None:
+        ''' constructor '''
+        self.Type = Type
+        self.Moving = Moving
+        self.Id = Id
+        self.ExecID = ExecID
+
+    def as_dict(self):
+        ''' Design as dictionnary '''
         result = {}
         for c in self.__table__.columns:
             result[c.name] = getattr(self, c.name)
         return result
 
 class Etape(db.Model):
+    ''' Etape Model
+    '''
     __tablename__ = 'Etapes'
 
     EtapeID = db.Column(db.Integer, primary_key=True)
@@ -70,17 +147,17 @@ class Etape(db.Model):
     Duration = db.Column(db.Integer, nullable=False)
     StartTime = db.Column(db.Integer, nullable=False)
     EndTime = db.Column(db.Integer, nullable=False)
-    ElemID = db.Column(db.Integer, db.ForeignKey('utilisateur.userId'), nullable=False)
+    ElemID = db.Column(db.Integer, db.ForeignKey('Element.ElemID'), nullable=False)
     
     def __init__(self, 
-                 StartX:Float=0.0,
-                 StartY:Float=0.0,
-                 EndX:Float=0.0, 
-                 EndY:Float=0.0, 
-                 Duration:int=0,
-                 StartTime:int=0,
-                 EndTime:int=0,
-                 ElemID:int=0) -> None:
+                 StartX:Float = 0.0,
+                 StartY:Float = 0.0,
+                 EndX:Float = 0.0, 
+                 EndY:Float = 0.0, 
+                 Duration:int = 0,
+                 StartTime:int = 0,
+                 EndTime:int = 0,
+                 ElemID:int = 0) -> None:
         ''' constructor '''
         self.StartX = StartX
         self.StartY = StartY
@@ -92,7 +169,7 @@ class Etape(db.Model):
         self.ElemID = ElemID
 
     def as_dict(self):
-        ''' User as dictionnary '''
+        ''' Etape as dictionnary '''
         result = {}
         for c in self.__table__.columns:
             result[c.name] = getattr(self, c.name)