$ sudo apt-get update
$ sudo apt-get install libopendbx1-firebird 

libopendbx1-firebird is installed in your system.

Make ensure the libopendbx1-firebird package were installed using the commands given below,

$ sudo dpkg-query -l | grep libopendbx1-firebird *

You will get with libopendbx1-firebird package name, version, architecture and description in a table

libopendbx1-firebird package basic information: