> H2 or SQLite can be very reasonable choices for in-app embedded > databases, so long as your app can operate within their constraints on > concurrency and data size. Firefox uses SQLite and the places.sqlite database is notorious for getting corrupted every five minutes. Libreoffice/Openoffice Base uses H2 and there are plenty of reports by users about data losses due to database corruption. Personally I'd *never* use an "embedded" database for anything. Sincerely, Wolfgang