The first step in setting up an enterprise geodatabase is to install your RDBMS. In many organizations, this is handled by someone in the IT department, such as a database administrator or systems administrator. If so, try to work with them as much as possible for the setup of your RDBMS; not only will you build a stronger working relationship with them, you will further understand how your RDBMS was installed and configured.
For this book, we will be using SQL Server 2014 Standard Edition SP2 as our RDBMS. As always, consult the documentation of your RDBMS for detailed installation and configuration instructions.