I need to migrate an entire Oracle database to Confluence. Will Confluence create a new page for each file present in the database? Is there a limit to the number of pages that can be created? Is there a limit to the number of attachments per page? There are some files in this database that haven't been accessed in a long time and I would like to delete them. Do you recommend deciding which files to delete and which to keep before migration, or can I delete the unwanted files after migrating all of them? Or does it make no difference at all? Thank you!