akonadi-backend-postgresql software package provides PostgreSQL storage backend for Akonadi, you can install in your Ubuntu 12.04 LTS (Precise Pangolin) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install akonadi-backend-postgresql
akonadi-backend-postgresql is installed in your system.
Make ensure the akonadi-backend-postgresql package were installed using the commands given below,
$ sudo dpkg-query -l | grep akonadi-backend-postgresql *
You will get with akonadi-backend-postgresql package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Miscellaneous |
| Package | akonadi-backend-postgresql |
| Version | 1.7.2-0ubuntu1.1 |
| Description | PostgreSQL storage backend for Akonadi |
| Sub Section | misc |