how to install postgres 11 on centos 7 code example

Example 1: how to install postgresql on centos 7

yum list postgresql*

Example 2: install postgresql 10 centos 7

# yum install https://download.postgresql.org/pub/repos/yum/10/redhat/rhel-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm -y