$ sudo apt-get update
$ sudo apt-get install libqdbm-perl 

libqdbm-perl is installed in your system.

Make ensure the libqdbm-perl package were installed using the commands given below,

$ sudo dpkg-query -l | grep libqdbm-perl *

You will get with libqdbm-perl package name, version, architecture and description in a table

libqdbm-perl package basic information: