Embedded SQL Databases?
kumquat asks: "We are creating a desktop version of a java web application that currently uses MySQL. What small footprint SQL databases would you recommend embedding into applications? I'm looking for: zero maintenance, small footprint, runs in multiple platforms (Windows, Unix, Linux). Low cost or free would be a bonus. Freshmeat turned up a couple of possibilities: hysqldb and Mckoi SQL."
I don't know much about embedded DBs. I do know that Borland (for whom I work) sells Interbase, mainly as an embedded database. I have it running on my Linux box, and its footprint and maintenance needs are both quite small. It's a full-featured multi-threaded relational DB. Open Source, of course!
It is not free, but it's not outrageously expensive either. I believe that it costs in the low hundreds of dollars.