Hi,

For a desktop database, I would go for dBase files. Before everyone starts screaming for SQLite, let me explain my reasoning:

it is an open format - just about every spreadsheet can read/write to it.
no cumbersome SQL to learn for end users.. nearly plug an play
reasonable performance
small number of files : 1 for the table and 1 for each index
tiny memory/resource requirements
no need to run a daemon

hope this helps

Jason L. Froebe