$ sudo apt-get update
$ sudo apt-get install libgda-5.0-postgres 

libgda-5.0-postgres is installed in your system.

Make ensure the libgda-5.0-postgres package were installed using the commands given below,

$ sudo dpkg-query -l | grep libgda-5.0-postgres *

You will get with libgda-5.0-postgres package name, version, architecture and description in a table

libgda-5.0-postgres package basic information: