diff --git a/check_db.py b/check_db.py
new file mode 100644
index 0000000..4285c42
--- /dev/null
+++ b/check_db.py
@@ -0,0 +1,87 @@
+#!/usr/bin/env python3
+import json
+from datetime import datetime
+
+from sqlalchemy import create_engine, Column, Integer, String, Float, DateTime, ForeignKey, Text
+from sqlalchemy.orm import declarative_base, relationship, sessionmaker
+
+# Definiere dieselben Modelle, wie im Bundle-Erfassungsskript:
+Base = declarative_base()
+
+class Bundle(Base):
+    __tablename__ = 'bundles'
+    id = Column(Integer, primary_key=True)
+    machine_name = Column(String, unique=True)
+    human_name = Column(String)
+    current_version_id = Column(Integer, ForeignKey('bundle_versions.id'))
+    
+    current_version = relationship("BundleVersion", uselist=False, foreign_keys=[current_version_id])
+    versions = relationship("BundleVersion", back_populates="bundle", foreign_keys='BundleVersion.bundle_id')
+    sales_history = relationship("BundleSalesHistory", back_populates="bundle")
+
+class BundleVersion(Base):
+    __tablename__ = 'bundle_versions'
+    id = Column(Integer, primary_key=True)
+    bundle_id = Column(Integer, ForeignKey('bundles.id'))
+    version_hash = Column(String)
+    version_data = Column(Text)  # als JSON-String
+    timestamp = Column(DateTime, default=datetime.utcnow)
+    
+    bundle = relationship("Bundle", back_populates="versions")
+
+class BundleSalesHistory(Base):
+    __tablename__ = 'bundle_sales_history'
+    id = Column(Integer, primary_key=True)
+    bundle_id = Column(Integer, ForeignKey('bundles.id'))
+    bundles_sold = Column(Float)
+    timestamp = Column(DateTime, default=datetime.utcnow)
+    
+    bundle = relationship("Bundle", back_populates="sales_history")
+
+def main():
+    # Verbindung zur vorhandenen SQLite-Datenbank
+    engine = create_engine('sqlite:///bundles.db')
+    Session = sessionmaker(bind=engine)
+    session = Session()
+    
+    # Alle Bundles abfragen
+    bundles = session.query(Bundle).all()
+    if not bundles:
+        print("Die Datenbank enthält noch keine Bundles.")
+        return
+
+    for bundle in bundles:
+        print("---------------------------------------------------")
+        print(f"Bundle-ID: {bundle.id}")
+        print(f"Machine Name: {bundle.machine_name}")
+        print(f"Human Name: {bundle.human_name}")
+        if bundle.current_version:
+            print(f"Aktuelle Version (ID): {bundle.current_version.id}")
+            print(f"Version Hash: {bundle.current_version.version_hash}")
+            try:
+                version_info = json.loads(bundle.current_version.version_data)
+                # Optional: gebe z. B. den 'human_name' oder weitere Felder aus
+                print(f"Version-Daten (gekürzt): {json.dumps(version_info, indent=2)[:300]} ...")
+            except Exception:
+                print("Version-Daten (roher Text):")
+                print(bundle.current_version.version_data)
+            print(f"Letzte Aktualisierung: {bundle.current_version.timestamp}")
+        else:
+            print("Keine Version hinterlegt.")
+
+        # Alle Versionen anzeigen
+        print("\nHistorische Versionen:")
+        for version in bundle.versions:
+            print(f"  Version-ID: {version.id}, Timestamp: {version.timestamp}, Hash: {version.version_hash}")
+
+        # Verkaufszahlen anzeigen
+        print("\nVerkaufshistorie:")
+        if bundle.sales_history:
+            for sale in bundle.sales_history:
+                print(f"  {sale.timestamp}: {sale.bundles_sold} verkauft")
+        else:
+            print("  Keine Verkaufsdaten vorhanden.")
+    print("---------------------------------------------------")
+
+if __name__ == "__main__":
+    main()