database connection documentation update

docs/rpi-documentation/Databaseconnection.md

@@ -100,13 +100,17 @@ Sadly this version of the code is only able to push the data from the one node b
             print(query ,i)
             cursor.execute(query, i)
             mydb.commit()
-        
+    #in the case of an error, show what and where, and after, close the database connection.
     except mysql.connector.Error as err:
         print("MySQL Error:", err)
     finally:
         cursor.close()
         mydb.close()
+```
+In the next function, the connection is established with the WebSocket and collects the data sent by the nodes. This data is then stored in a variable named "data". (This data is the same data that was being processed to make it readable for Python and was split up in differnt types.)
 
+This function also verifies if the WebSocket connection can be established and provides an error message when this is not the case.
+```py
 async def receive_data():
     uri = "ws://145.92.8.114/ws"
 
@@ -118,12 +122,15 @@ async def receive_data():
                 await process_data(data)
     except websockets.ConnectionClosedError as e:
         print("WebSocket connection closed:", e)
-
+```
+This is one of the last functions where the file is instructed to wait for a WebSocket connection before executing the code. This is done to prevent false data from entering the database.
+```py
 async def main():
     await receive_data()
 
 asyncio.run(main())
 ```
+As a summary, this code is meant to establish connections both to the database and the WebSocket to enable a data connection between them. When new data arrives, it will be pushed to the database, and if a new MAC address is encountered, it will be added to the list of addresses.
 
 # New Version (by sietse)