XML by Example

Most of these applications are called n-tiered applications. XCommerce is

an n-tier application. Essentially, n-tiered applications are a specialized

form of client/server application.

Client/Server Applications

As Figure 11.1 illustrates, the Web is a good example of a client/server

application, so you are already familiar with the idea. On the left side is the

Web client also known as the browser. On the right side is the Web server.

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Chapter 11: N-Tiered Architecture and XML

EXAMPLE

Figure 11.1: The Web is a client/server application.

At the user initiative, the browser requests Web pages from the server. The

server delivers the pages and the client ...