Package "odbc-postgresql"

ODBC driver for PostgreSQL
This package provides a driver that allows ODBC-enabled applications to
access PostgreSQL databases. ODBC is an abstraction layer that allows
applications written for that layer to access databases in a manner
that is relatively independent of the particular database management
system.

You need to install this package if you want to use an application that
provides database access through ODBC and you want that application to
access a PostgreSQL database. This package would need to be installed
on the same machine as that client application; the PostgreSQL database
server can be on a different machine and does not need any additional
software to accept ODBC clients.

If you want to write software that can access a database through the
ODBC abstraction layer, you need to install the unixODBC driver manager
development package unixodbc-dev, and possibly additional packages for
language bindings. This driver package is only used at run time.