diff --git a/my_movies/create_db.sql b/my_movies/create_db.sql
index 8311313..872dde5 100644
--- a/my_movies/create_db.sql
+++ b/my_movies/create_db.sql
@@ -1,5 +1,5 @@
     CREATE TABLE IF NOT EXISTS eggs(
-                            cooler_typ TEXT,
+                            cooler_typ TEXT PRIMARY KEY,
                             glückszahl INTEGER
                             );
                             
\ No newline at end of file
diff --git a/my_movies/database.py b/my_movies/database.py
index c0406f4..b76f23a 100644
--- a/my_movies/database.py
+++ b/my_movies/database.py
@@ -24,14 +24,15 @@ class db_work:
             cursor = con_db.cursor()
             fd = open(self.script_folder + os.sep + "add_value.sql", "r")
             sql_code = fd.read().format(coolertype=cooler_typ,eine_zahl=glueckszahl)
-            #sql_code =  '''
-            #               INSERT INTO eggs (cooler_typ, glückszahl)
-            #               VALUES('{coolertype}', {eine_zahl});
-            #            '''.format(coolertype=cooler_typ,eine_zahl=glueckszahl)
-
-            cursor.execute(sql_code)
+            
+            try:
+                cursor.execute(sql_code)
+            except sqlite3.IntegrityError:
+                return False            
+            
             con_db.commit()
-    
+            return True
+        
     def show_value(self):
         with sqlite3.connect(self.db_file) as con_db:
             cursor = con_db.cursor()
@@ -48,5 +49,6 @@ if __name__ == "__main__":
     db_file_full = script_folder + os.sep + "spam.db"
     my_db = db_work(db_file=db_file_full)
     my_db.create_db()
-    my_db.add_value_db(cooler_typ="daniel-3", glueckszahl=42)
+    add_value_to_db = my_db.add_value_db(cooler_typ="daniel-5", glueckszahl=42)
+    print (add_value_to_db)
     print(my_db.show_value())
\ No newline at end of file
diff --git a/my_movies/spam.db b/my_movies/spam.db
index 3bbf02c..c510326 100644
Binary files a/my_movies/spam.db and b/my_movies/spam.db differ
diff --git a/play_with_sqllite/main.py b/play_with_sqllite/main.py
new file mode 100644
index 0000000..4883f76
--- /dev/null
+++ b/play_with_sqllite/main.py
@@ -0,0 +1,62 @@
+#! /usr/bin/env python.3.11
+
+import sqlite3, os
+
+script_folder = os.path.dirname(os.path.realpath(__file__))
+
+def erzeuge_tabellen():
+    with sqlite3.connect(script_folder + "/startegie.db") as verbindung:
+        cursor = verbindung.cursor()
+        sql =   '''
+                    CREATE TABLE viren(
+                    name TEXT PRIMARY KEY, typ INTEGER, status TEXT);
+                '''
+        cursor.execute(sql)
+
+        sql =   '''
+                    CREATE TABLE viren_typ(
+                    typ INTEGER PRIMARY KEY,groesse INT,signatur TEXT);
+                '''
+        cursor.execute(sql)
+        verbindung.commit()
+
+def schreibe_tabellen():
+     with sqlite3.connect(script_folder + "/startegie.db") as verbindung:
+        cursor = verbindung.cursor()
+        sql =   '''
+                    INSERT INTO viren_typ(typ, groesse, signatur)
+                    VALUES(1,128,'ABAABA'),(2,256,'ABAABA'),(3,256,'BCCBCB')
+                '''
+        cursor.execute(sql)
+
+        sql =   '''
+                    INSERT INTO viren(name, typ, status)
+                    VALUES  ('T800', 1, 'aktiv'),
+                            ('T803', 2, 'aktiv'),
+                            ('Bit13', 3, 'aktiv'),
+                            ('Gorf3', 1, 'aktiv'),
+                            ('Gorf7', 2, 'aktiv')
+                '''
+
+        cursor.execute(sql)
+        verbindung.commit()
+
+
+def lese_tabellen():
+     with sqlite3.connect(script_folder + "/startegie.db") as verbindung:
+        cursor = verbindung.cursor()
+        sql = '''SELECT * FROM viren_typ;'''
+        cursor.execute(sql)
+        #for ergebnis in cursor:
+        #    print(ergebnis)
+        
+        return cursor.fetchall()
+    
+
+
+
+if __name__ == "__main__":
+#    erzeuge_tabellen()
+#    schreibe_tabellen()
+   for i in lese_tabellen():
+       print(i)
\ No newline at end of file
diff --git a/play_with_sqllite/startegie.db b/play_with_sqllite/startegie.db
new file mode 100644
index 0000000..db08a65
Binary files /dev/null and b/play_with_sqllite/startegie.db differ