Please let us know how that works? I'm curious and I'm sure others are, too.
I have OpenOffice installed on a U3 flash drive and was going to try creating a database just to do some testing for your question. But, the Base database part of OpenOffice doesn't work on the flash drive; I get a message about needing a Java plug-in and I think I cannot install that plug-in on a portable version of OpenOffice.