Although relational databases have dominated the world of data storage, there have always been other systems that specialize in alternative ways of working with data, for example document and object-oriented databases, key-value databases, and hierarchical databases. The popularity of these alternative databases has experienced a resurgence thanks to the recent NoSQL and Big Data movements. This recipe teaches you how to install MongoDB, a modern document-oriented database system.
This recipe requires a CentOS system with a working network connection and administrative privileges by either using the root account or sudo. It also assumes you have registered the EPEL repository (see the Registering the EPEL and Remi repositories recipe in Chapter 4, Software Installation Management).