If a database with the same name exists in the derby.system.home location, the whole database is deleted, copied from the backup location, and then restarted.
The log files are copied to the same location they were in when the backup
was taken. The
For more information about using this attribute, see "Restoring a database
from a backup copy" in the
Do not combine this attribute with createFrom, rollForwardRecoveryFrom, or create.