Yum is the default package manager on Fedora.
Yum is a front for RPM.
Package database is done automatically each time you use yum. If you want to do it manually anyway:
yum install filezilla
yum list paquet
We can use pattern (for example all package beginning with file) :
yum list file*
To search in package desciption
yum search file
yum list installed
aptitude install build-essential
Will become on Fedora :
yum groupinstall "Development Tools"