diff --git a/fuzzer/datatypes.py b/fuzzer/datatypes.py
index 2802a13..58ce336 100644
--- a/fuzzer/datatypes.py
+++ b/fuzzer/datatypes.py
@@ -1,55 +1,59 @@
-from dataclasses import dataclass
+from dataclasses import dataclass, asdict
 
 @dataclass
-class Kunde:
-    KundenNr: int
-    Vorname: str
-    Nachname: str
-    Strasse: str
-    Geburstdatum: str  # Assuming timestamp as a string for simplicity
-    HausNr: str
-    PLZ: int
-    Email: str
-    Telefon: int
-    Ort: str
+class Customer:
+    customer_id: int
+    first_name: str
+    last_name: str
+    street: str
+    birth_date: str  # Assuming timestamp as a string for simplicity
+    house_number: str
+    postal_code: int
+    email: str
+    phone: int
+    city: str
+
+    def dict(self):
+        return {k: str(v) for k, v in asdict(self).items()}
 
 @dataclass
-class Bestellung:
-    BestellNr: int
-    KundenNr: int
-    Rechnungsbetrag: int
-    Bestelldatum: str  # Assuming timestamp as a string for simplicity
+class Order:
+    order_id: int
+    customer_id: int
+    invoice_amount: int
+    order_date: str  # Assuming timestamp as a string for simplicity
 
 @dataclass
-class Zutat:
-    ZutatenNr: int
-    Bezeichnung: str
-    Bestand: int
-    Nettopreis: int
-    Einheit: str
-    Kohlenhydrate: int
-    Kalorien: int
-    Protein: int
+class Ingredient:
+    ingredient_id: int
+    designation: str
+    stock: int
+    net_price: int
+    unit: str
+    carbohydrates: int
+    calories: int
+    protein: int
 
 @dataclass
-class Lieferant:
-    LieferantenNr: int
-    Ort: str
-    Strasse: str
-    Email: str
-    Telefon: str
-    Liferantenname: str
-    HausNr: str
-    PLZ: int
+class Supplier:
+    supplier_id: int
+    city: str
+    street: str
+    email: str
+    phone: str
+    supplier_name: str
+    house_number: str
+    postal_code: int
 
 @dataclass
-class LieferantContainsZutaten:
-    LieferantenNr: int
-    ZutatenNr: int
+class SupplierContainsIngredients:
+    supplier_id: int
+    ingredient_id: int
+    delivery_cost: int
+    delivery_time: int
 
 @dataclass
-class BestellungContainsZutaten:
-    BestellNr: int
-    ZutatenNr: int
-    Menge: int
-
+class OrderContainsIngredients:
+    order_id: int
+    ingredient_id: int
+    quantity: int