slackbuilds_ponce/system/postgresql
..
doinst.sh
postgresql.info
postgresql.logrotate
postgresql.SlackBuild
rc.postgresql.new
README
README.SBo
setup.postgresql
slack-desc

PostgreSQL is an advanced object-relational database management
system (ORDBMS) based on POSTGRES. With more than 15 years of
development history, it is quickly becoming the de facto
database for enterprise level open source solutions.

Before you can run postgresql you'll need to create the database;
please see README.SBo.