title: Add new tables to moodle database
body: <p>I just want to know is it ok to add new tables to the <code>moodle</code> database or should I create a new database for that? I need a table to save a unique id and a token in one table and client's ip address, client's MAC address and computer name in another table.(and what are the best data types to store those?)
  And I just want to know does moodle save these things in there tables? Then it will be easy for me. 
  Thank You  </p>