Must I use the sample database?

The sample database contains lots of attachments, unused pages, etc. I would like to be able to set up an xwiki installation with a clean starting point; ultimately I will need to have my own SQL file to create multiple virtual xwikis each with the same custom initial state. In other words, it is not practical for me to manually remove and replace the sample content. Due to version history each virtual xwiki would be bloated with all the photos and other sample data. Has anyone created a minimal database SQL file? I assume it is needed as I did try running xwiki with an empty database. If not, any suggestions? Is there a good Hibernate tool that would make it easier to manually edit the database? (I tried editing the SQL but it is hard to separate the essential xwiki structure from the sample data.) Or is there some way to strip all the unused data from the database? -Trevor