When it comes to perform the installation of the database engine Postgres SQL the link to download the software is: https://yum.postgresql.org/. Also take a look at the documentation to check the prerequisite: https://www.postgresql.org/docs/manuals/ The installation is performed using the repository and in this post I will install the version 9.5 on the operating system Red Hat el7.x86_64. So, let’s install the repository with the root user: Search for the installed repository using the command “yum search postgresql9”: After we have confirmed the installation of the repository, we can proceed with…