InfoCenter Home > 4.1: Programming model and environmentIBM WebSphere Application Server supports a three-tier programming model in which the application server and its contents -- your applications -- reside in the middle tier. In this multi-tiered programming model, tier 0 represents Applets which run in a Web browser; tier 1, some application resources such as JSP files and servlets, which respond to HTTP requests; tier 2, the enterprise beans that run on the EJB server; and tier 3, the databases that store the business data. This documentation is geared towards the following layered approach to application development:
Application developers might specialize in areas such as data access, Java programming, and Web page design. The layered approach provides a model allowing these programmers to collaborate in designing, implementing, deploying, and maintaining applications with maximum efficiency. |
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