The programs needed to create and run a PostgreSQL server
PostgreSQL is an advanced Object-Relational database management system (DBMS). The postgresql-server package contains the programs needed to create and run a PostgreSQL server, which will in turn allow you to create and maintain PostgreSQL databases.
acquired package info from repodata DB: repodata/6bded347e614bd7bc6bfff5f4af69641e4056c5d4e8a7fa27e60a938e3a13b9b-primary.sqlite.bz2
The shared libraries required only for this build of PostgreSQL server
The postgresql-private-libs package provides the shared libraries for this build of PostgreSQL server and plugins build with this version of server. For shared libraries used by client packages that need to connect to a PostgreSQL server, install libpq package instead.
PostgreSQL is an advanced Object-Relational database management system (DBMS). The base postgresql package contains the client programs that you'll need to access a PostgreSQL DBMS server, as well as HTML documentation for the whole system. These client programs can be located on the same machine as the PostgreSQL server, or on a remote machine that accesses a PostgreSQL server over a network connection. The PostgreSQL server can be found in the postgresql-server sub-package.