Hi, I am not able to type my question in the Detail box, so I write my question in this text file. I am new to 800xA History Server and I come across the RTDB (Real time database). May I know does this RTDB developed based on Oracle or SQL? Or it is just ABB internal/proprietary database? The reason I am asking this is my company internal audit asked us what kind of database ABB system use for history data logging.