I must develop an web application with H2 database engine. However, I still don't understand how to support the information as the database is running after reading through this tutorial:

http://www.h2database.com/html/tutorial.html#upgrade_backup_restore

Does H2 output its saved file to somewhere within the file system? Can One just support the outputted files?

H2 is saved around the file system, but it might be easier to make use of the backup tools that you simply reference, since the extendable can alter between versions of H2. Should you upgrade H2, it might not any more have the ability to browse the files it produced inside a previous version. Also, should you copy the files it uses, I would suggest shutting the database lower first, otherwise the replicated files might be unreadable by H2.

The position of the file is dependent around the jdbc url you specify. Begin to see the FAQ: http://www.h2database.com/html/faq.html