Some notes:

Some notes:

- Foreign keys are really cool (at the XMLDB Editor). Define them as necessary
  as they allow as one "formal" structure of the DB. They won't cause problems
  on generation, mainly because only the underlying index will be created.
- Please, put comments inside each table/field/key/index field, mainly because
  XML comments will be deleted if the file is edited by
- The XMLDB Editor. Please use it ;-)
- Also, one unique index was wrong in the XML file, fixed now.