postgresql-client-10 10.5-1build2 (s390x binary) in ubuntu disco

 This package contains client and administrative programs for
 PostgreSQL: these are the interactive terminal client psql and
 programs for creating and removing users and databases.
 .
 This is the client package for PostgreSQL 10. If you install
 PostgreSQL 10 on a standalone machine, you need the server package
 postgresql-10, too. On a network, you can install this package on
 many client machines, while the server package may be installed on
 only one machine.
 .
 PostgreSQL is an object-relational SQL database management system.