This official tutorial ( Sun Microsystems, Inc. ) is a guide to developing enterprise applications for the JavaTM Platform, Enterprise Edition 5 ( Java EE 5 ). Before proceeding with this tutorial, you should have a good knowledge of the Java programming language. You should also be familiar with the Java DataBase Connectivity ( JDBCTM ) and relational database features. This tutorial uses examples to describe the features and functionalities available in the Java EE 5 platform for developing enterprise applications. The Java platform ( Enterprise Edition ) differs from the Java Standard Edition Platform ( Java SE ) in that it adds libraries which provide functionality to deploy fault-tolerant, distributed, multi-tier Java software, based largely on modular components running on an application server. Java EE is designed to support applications that implement enterprise services for customers, employees, suppliers, partners, and others who make demands on or contributions to the enterprise. Such applications are inherently complex, potentially accessing data from a variety of sources and distributing applications to a variety of clients.

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