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Enterprise JavaBeans

Most of the examples cited in this chapter are at an industry, international, or global level. The application of XML mentioned here in relation to the Enterprise JavaBeans technology is at the opposite end of the spectrum. In Enterprise Java (J2EE) servers, the configuration information for the server is held in XML format in a file called the deployment descriptor.

Many existing e-commerce servers on the Web are using Sun's Java technology to provide platform independence and scalability, among other features. Many of these applications need to access data (not necessarily in XML) from remote machines. The Enterprise JavaBeans technology is an enterprise-level technology that is designed to implement many of the facilities needed for remote access to data stores. In version 1.1 of the Enterprise JavaBeans specification (http://java.sun.com), XML is already being used in what is called the deployment descriptor for the Enterprise JavaBeans container (a specialized application server). The deployment descriptor file defines important aspects of how the server (or container) will function.


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