Question about postgresql version

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Updating from PostgreSQL 9.6 or 9.4 to PostgreSQL 11

This article only applies to UCS 5.0. UCS 5.0 ships PostgreSQL 11 by default, while UCS 4.3 shipped PostgreSQL 9.6 by default and UCS 4.2 shipped with PostgreSQL 9.4. When UCS 4.4 systems are updated, however, the installed PostgreSQL version is retained. The following steps are necessary on a UCS-5.0 system for updating PostgreSQL 9.4 or PostgreSQL 9.6 to PostgreSQL 11 The following commands are one-liners. You can simply triple-click on a line to completely select it for easy cop…