Forget the world DB (unless you have a lot of custom crap), and forget the realm DB (unless you have a *LOT* of realms) -- you can recreate those two from scratch with the latest and greatest... Download the newest TC full DB from github and then apply all updates in sql/updates/world. For your realm DB, just use the one in sql/base and edit it to add your realms back in.
So that leaves the character DB. Look in sql/old/3.2.2a and execute all the *_characters_* sql in order from 7332+. Once you are done with that, move on to 3.3.2, 3.3.3a and finally 3.3.5a. Lastly run the 3 updates (as of this writing) in sql/updates/auth_char and you characters DB will be up to date and compatible with the latest and greatest TC.
-- Brian