What is better method to backup postgresql DB.

new to postgresl. need to backup postgresql DB, which way is better to backup DB.

 

from training, I learned that we can backup the whole PGdata and other direcotries to acheive backup goal, originally I was plainned to schedule jobs to use pgdump to backup all DBs.

 

so which way is better for backup or there is other way to backup PGDB.

 

Thanks