Adding content to Drupal database I'm running a rather large Drupal 6 site and I need to include additional information in the database, things that run independently of Drupal. Is it best to create a separate database and connect to it from the files I need to access the info from, or is it just safe to add a custom table to the Drupal database and add whatever I want in there?

Thanks!
In theory, it's no problem to add tables to the database. It won't hurt Drupal. That said, I wouldn't recommend it. If things already are separated and there is no important reason to use a single db, just keep them separated for flexibility and performance in the future.