Backups
From DAViCal Wiki
All of the DAViCal data is stored in the database, and you should back this up periodically using the PotgreSQL pg_dump command something like:
pg_dump -Fc davical >davical.pgdump
The PostgreSQL companion to that is pg_restore:
createdb --owner davical_dba --encoding UTF8 --template template0 pg_restore -Fc -d davical davical.pgdump

