Peter Fischer

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Portals are Web sites that serve as a jumping-off point to information and applications on the Internet or from an intranet. To accommodate the aggregation and display of diverse content in a dynamic manner, a portal server must provide a framework that breaks the different portal components into pluggable portlets. Each portlet is responsible for providing specific information and must therefore perform tasks like accessing content from its source (for example, a Web site, database, or e-mail server) and transforming the content so it can be rendered to the client most efficiently. The IBM WebSphere Portal for Multiplatforms Version 4.1 provides a framework of services to make the task of writing and managing portlets as easy as possible. From a user's perspective, a portlet is a small window in the portal page that provides a specific service or information, for ... (more)