Portals IST 421 Spring 2008 Enterprise Information Portals
- Slides: 18
Portals IST 421 Spring 2008
Enterprise Information Portals � Portals – doorway to a focused set of resources either internal or external � Targeted for a specific audience ◦ Employees, customers, suppliers as a single coherent view of information aggregated from different sources � Serve
Enterprise Information Portals �Back Office Systems - ERP, financials, human resources, engineering, process automation/workflow, project management �Front Office Systems – sales force automation, customer relationship management, help desk, marketing automation �Personal Productivity Systems – word processor, spreadsheet, presentation, contact manager, personal information manager
Enterprise Information Challenges � Managed data ◦ Legacy systems, proprietary systems ◦ Disconnected islands of automation � Unmanaged data ◦ Ad-hoc productivity tools ◦ Chaotic access and exchange ◦ Restricted publication rights
Enterprise Information Portals �A system to manage access to information � Adopt a standard for transmitting and representing data using XML � Content must be abstract and kept separate from rendition ◦ Rendition – the file format that contains the actual data and the description of the format
Enterprise Information Portals � Primary advantage is that there is no need to integrate systems directly between companies or within trading communities � Connect to each system through a point of integration ◦ User interface, database, application server
Enterprise Information Portals � Today, more information flows through user interfaces than automatically through backend integration
Portal Advantages � Supports a noninvasive approach � Faster to implement than real-time information exchange � Technology is mature with many portaloriented applications to learn from
Portal Disadvantages � Information does not flow in real time � Requires human interaction � Information must be abstracted through another application logic layer – complexity issue � Security is a concern when data is being extended to users over the Web
Portal Evolution � Single-System Portals ◦ Single enterprise systems that have their user interfaces extended to the Web � Multiple Enterprise System Portals ◦ Multiple enterprise systems information is funneled through a single Web-enabled application
Portal Evolution � Trading Community Portals ◦ Multiple enterprise system portal is extended to include systems within many companies – trading community portal or digital exchange
Portal Architecture � Made ◦ ◦ ◦ up of components: Web clients Web servers Database servers Back-end applications Application servers
Portal Server Architecture From The XML Handbook by Goldfarb and Prescod, Prentice Hall PTR, 2001.
Portal Architecture � Web Clients – any device able to run a Web browser and display HTML and graphics ◦ PC, PDA’s, cell phones � Web Servers – file servers able to convert information into HTML and deliver to a Web browser using HTTP
Portal Architecture � Database Servers – work as a traditional client/server architecture � Back-End Applications – mix of applications such as SAP, custom applications, client/server applications ◦ Portals gather appropriate information from these systems and present it to the user interface
Portal Architecture � Application Servers – provide a middle layer between the back-end applications, databases, and the Web server.
Portal Servers � Three requirements for portal servers: ◦ Performance: reliability, availability, scalability ◦ Content distribution to PC’s, thin clients, mobile devices such as phones and PDA’s; personalization ◦ Business process integration
Portal Server Architecture � Personalization ◦ Content delivery agents (CDA) is a program or script that creates a window for providing a data source ◦ Each user is assigned a “role” which specifies a collection of pages, CDS’s, and a default theme ◦ User may change the layout of any page, change the color and background images of the desktop
- Enterprise information portals
- Enterprise information portals
- Ist 421
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- Advanced systems integration
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- Steps for application integration
- 2008 2008
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