Now, we will create the PostgreSQL 10.5 database that we will use as a repository for our API. You will have to download and install a PostgreSQL database server if you aren't already running it in your computer or on a development server. You can download and install this database management system from its web page (http://www.postgresql.org). If you are working with macOS, Postgres.app provides a really easy way to install and use PostgreSQL on this operating system. You can refer to it from http://postgresapp.com. If you are working with Windows, EnterpriseDB and BigSQL provide graphics installers that simplify the configuration process on modern Windows server or desktop versions (visit https://www.postgresql.org/download/windows for more information).
Notice that the examples have been tested with PostgreSQL 10.5 on macOS, Linux, and Windows.
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