diff --git a/lib/update_database.py b/lib/update_database.py
new file mode 100644
index 0000000..35a3c77
--- /dev/null
+++ b/lib/update_database.py
@@ -0,0 +1,55 @@
+import argparse
+import os
+import shutil
+import subprocess
+# import configparser
+# import json
+
+"""
+Dieses Programm holt sich aus
+- RD Fusion eine aktuellen Stand der exisitierenden IDS 
+- Sivas eine Liste der gewünschten Teile
+
+"""
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description='fetches data from sivas or ruledesigner fusion', prog='update_database')
+    parser.add_argument('-s', '--sivas', action='store', help='fetch data of this id from sivas fo local database folder')
+    parser.add_argument('-r', '--rd', action='store_true', help='fetch list of existing parts from RD Fusion')
+
+    args = parser.parse_args()
+
+    outDir = os.environ.get('CREMIG_DATA')
+    if args.rd:
+        inPath = os.environ.get('RD_DATABASE_SOURCE')
+        outFileName = "RD_Bestandspool.csv"
+        if os.path.isfile(inPath):
+
+            outFilePath = os.path.join(outDir, outFileName)
+            if os.path.isdir(outDir):
+                shutil.copyfile(inPath, outFilePath)
+            else:
+                print(f"no such directory ${outDir} of env CREMIG_DATA")
+            print("done")
+        else:
+            print(f"no such file ${inPath} of environment variable RD_DATABASE_SOURCE. have a look at cremig_setenv.bat")
+
+    if args.sivas:
+        exePath = os.environ.get('SIVAS_DATABASE_QUERY')
+        sivasId = str(args.sivas)
+        if os.path.isfile(exePath):
+            outFilePath = os.path.join(outDir, sivasId + ".json")
+            if os.path.isdir(outDir):
+                #subprocess.Popen([exePath, "-o", outDir, "--format json", "-number", sivasId ])
+                cmd = ' '.join([exePath, "-o", outDir, "--format json", "-number", sivasId ])
+                os.system(cmd)
+            else:
+                print(f"no such executable ${outDir}  of env CREMIG_DATA")
+            print("done")
+        else:
+            print(f"no such file ${exePath} of environment variable SIVAS_DATABASE_QUERY. have a look at cremig_setenv.bat")
+
+
+
+