PostgreSQL

PostgreSQL is a enterprise grade open source database. http://www.postgresql.org/

Backup

The following assumes the database username is fusionpbx and the database to backup is fusionpbx. Make sure you have the database password ready.

pg_dump -U fusionpbx fusionpbx -b -v -f /tmp/fusionpbx.sql

Additional Info

http://www.mkyong.com/database/backup-restore-database-in-postgresql-pg_dumppg_restore/

http://www.postgresql.org/docs/9.1/static/backup.html