Embedding UML inside a database seems particularly interesting. It seems possible to have tables handled by something running inside UML just as it would be possible to generate Web pages on the fly inside Apache.
Having Linux, with networking and full access to the outside world, generating tables, would allow a database to be constructed from arbitrary outside sources of data. These could be web sites, files on the host, or other databases. This last possiblility would allow databases to be linked together in the same way that pages are linked together on the Web, suggesting that this could be used to construct a World Wide DataBase.