diff --git a/app/models.py b/app/models.py
index 39bb8c7..780d04f 100644
--- a/app/models.py
+++ b/app/models.py
@@ -1,28 +1,28 @@
 from app import db
 
 Semestres_Competences = db.Table("Semestres_Competences",
-    db.Column("Semestre_num", db.String(1), db.ForeignKey("semestre.num")),
-    db.Column("Competence_code", db.String(3), db.ForeignKey("competence.code"))
+    db.Column("Semestre_num", db.String(32), db.ForeignKey("semestre.num")),
+    db.Column("Competence_code", db.String(32), db.ForeignKey("competence.code"))
 )
 
 ACs_Competences = db.Table("ACs_Competences",
-    db.Column("AC_code", db.String(6), db.ForeignKey("AC.code")),
-    db.Column("Competence_code", db.String(3), db.ForeignKey("competence.code"))
+    db.Column("AC_code", db.String(32), db.ForeignKey("AC.code")),
+    db.Column("Competence_code", db.String(32), db.ForeignKey("competence.code"))
 )
 
 Ressources_ACs = db.Table("Ressources_ACs",
-    db.Column("Ressource_code", db.String(4), db.ForeignKey("ressource.code")),
-    db.Column("AC_code", db.String(6), db.ForeignKey("AC.code"))
+    db.Column("Ressource_code", db.String(32), db.ForeignKey("ressource.code")),
+    db.Column("AC_code", db.String(32), db.ForeignKey("AC.code"))
 )
 
 Ressources_SAEs = db.Table("Ressources_SAEs",
-    db.Column("Ressource_code", db.String(4), db.ForeignKey("ressource.code")),
-    db.Column("SAE_code", db.String(5), db.ForeignKey("SAE.code"))
+    db.Column("Ressource_code", db.String(32), db.ForeignKey("ressource.code")),
+    db.Column("SAE_code", db.String(32), db.ForeignKey("SAE.code"))
 )
 
 SAEs_ACs = db.Table("SAEs_ACs",
-    db.Column("SAE_code", db.String(5), db.ForeignKey("SAE.code")),
-    db.Column("AC_code", db.String(6), db.ForeignKey("AC.code"))
+    db.Column("SAE_code", db.String(32), db.ForeignKey("SAE.code")),
+    db.Column("AC_code", db.String(32), db.ForeignKey("AC.code"))
 )
 
 class Semestre(db.Model):
@@ -38,7 +38,7 @@ class Semestre(db.Model):
         return "<Semestre {}>".format(self.num)
 
 class Competence(db.Model):
-    code = db.Column(db.String(3), primary_key = True, info={'label': 'Code'})
+    code = db.Column(db.String(32), primary_key = True, info={'label': 'Code'})
     nom = db.Column(db.String(255), info={'label': 'Nom'})
     diminutif = db.Column(db.String(30), info={'label': 'Diminutif'})
     description = db.Column(db.Text(), info={'label': 'Description'})
@@ -85,8 +85,8 @@ class Competence(db.Model):
         return "<Competence {}>".format(self.code)
 
 class CoefSAE(db.Model):
-    competence_code = db.Column(db.String(3), db.ForeignKey("competence.code"), primary_key=True)
-    sae_code = db.Column(db.String(6), db.ForeignKey("SAE.code"), primary_key=True)
+    competence_code = db.Column(db.String(32), db.ForeignKey("competence.code"), primary_key=True)
+    sae_code = db.Column(db.String(32), db.ForeignKey("SAE.code"), primary_key=True)
     coef = db.Column(db.String(2))
     competence = db.relationship("Competence", lazy=False, backref=db.backref("saes"))
     sae = db.relationship("SAE", lazy=False, backref=db.backref("competences"))
@@ -97,8 +97,8 @@ class CoefSAE(db.Model):
         return result
 
 class CoefRessource(db.Model):
-    competence_code = db.Column(db.String(3), db.ForeignKey("competence.code"), primary_key=True)
-    ressource_code = db.Column(db.String(4), db.ForeignKey("ressource.code"), primary_key=True)
+    competence_code = db.Column(db.String(32), db.ForeignKey("competence.code"), primary_key=True)
+    ressource_code = db.Column(db.String(32), db.ForeignKey("ressource.code"), primary_key=True)
     coef = db.Column(db.String(2))
     competence = db.relationship("Competence", lazy=False, backref=db.backref("ressources"))
     ressource = db.relationship("Ressource", lazy=False, backref=db.backref("competences"))
@@ -109,7 +109,7 @@ class CoefRessource(db.Model):
         return result
 
 class AC(db.Model):
-    code = db.Column(db.String(6), primary_key = True, info={'label': 'Code'})
+    code = db.Column(db.String(32), primary_key = True, info={'label': 'Code'})
     titre = db.Column(db.String(255), info={'label': 'Titre'})
     saes = db.relationship("SAE", secondary=SAEs_ACs, lazy=False, backref=db.backref("acs", lazy=False))
     ressources = db.relationship("Ressource", order_by="Ressource.code", secondary=Ressources_ACs, lazy=False, backref=db.backref("acs", lazy=False))
@@ -126,7 +126,7 @@ class AC(db.Model):
         return "<AC {}>".format(self.code)
   
 class PN(db.Model):
-    code = db.Column(db.String(3), primary_key = True, info={'label': 'Code'})
+    code = db.Column(db.String(32), primary_key = True, info={'label': 'Code'})
     nom = db.Column(db.String(255), info={'label': 'Nom'})
     diminutif = db.Column(db.String(30), info={'label': 'Diminutif'})
     description = db.Column(db.Text(), info={'label': 'Description'})
@@ -141,7 +141,7 @@ class PN(db.Model):
         return "<PN {}>".format(self.code)
 
 class SAE(db.Model):
-    code = db.Column(db.String(5), primary_key = True, info={'label': 'Code'})
+    code = db.Column(db.String(32), primary_key = True, info={'label': 'Code'})
     titre = db.Column(db.String(255), info={'label': 'Titre'})
     semestre = db.Column(db.String(255), info={'label': 'Semestre'})
     heures_encadrees = db.Column(db.String(3), info={'label': 'Heures Encadrées'})
@@ -173,7 +173,7 @@ class SAE(db.Model):
         return "<SAE {}>".format(self.code)
 
 class Ressource(db.Model): 
-    code = db.Column(db.String(4), primary_key = True, info={'label': 'Code'})
+    code = db.Column(db.String(32), primary_key = True, info={'label': 'Code'})
     nom = db.Column(db.String(255), info={'label': 'Nom'})
     semestre = db.Column(db.String(255), info={'label': 'Semestre'})
     heures_formation = db.Column(db.String(3), info={'label': 'Heures Formation'})