As far as I know, there is nothing out there that converts XML files to any sort of Palm database "standard". Remember, PalmOS databases are not really "databases" as the term is used on PCs and other computers -- they're just a collection of records containing data formatted for a particular application.
There is documentation out there that would guide you in how to take data on the PC -- such as from an XML file -- and use it to create a PDB file on the PC that can be synced to your handheld. Your app can then access the data that was created on the PC. It is a bit tricky to implement, but is done all the time by various applications. -- For information on using the PalmSource Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
