[otrs] update time for customer and mysql database dynamic value store

Hi , 1. How to find the customer update time. Any Ticket agent update time that is change time of ticket . same way customer also updated ticket is change time or any option there Column in database. 2. Specify ticket dynamic value where store in database in ticket table not having, how to linking dynamic field values in tickets . any ticket number base how to find out dynamic value. Please anybody help me Thank you Regards, Kalyana chakravarthy M .P, Sr software Engineer.