Importance of databases,”The use of databases by Web applications and smartphone apps is illustrated here. In this figure, people have computers (desktop or notebook) and smartphones, which are examples of devices used by people, who are referred to as users. On these devices are client applications (Web browsers, apps) used by people to obtain services such are searching, browsing, on-line purchasing, and tweeting over the Internet or cell phone networks. These services are provided by server computers
and these are the computers that hold the databases containing the data needed by the client applications.”