[support] MySQL table data safety/protection

Hi All I am using Drupal 6.26, MySQL (InnoDB). There are few mysql tables, that may be accessed by multiple users at sametime. Do I need to do anything extra to make sure mysql table data would not be corrupted. I read somewhere, I need to install transaction module to safeguard data. Can somebody advise me is it really required? Best Regards Kamal NECS, Bangalore