Saturday, July 2

Connectors and Unification

Connectors
Connectors are those which allow integration of application servers with Enterprise Information Systems (EIS) and enterprise applications with into the portal platform. The creation and running of connectors is supported by the portal runtime environment. Various services provided by the portal runtime are including a Web service that make connectors available to external clients, and also it allow these clients to access an enterprise system as if they were local. For doing this, the SOAP XML protocol is implemented to pass requests and responses between applications, like specific connectors and iViews.

Also, other portal services serve to making available a wizard framework for the creation of iViews for specific connectors, as an intermediary for user authentication and security, and also for connecting to back-end applications using existing connectors. Offering APIs for creation of local connectors, a software development kit (SDK) is available. This SDK is a part of the Portal Development Kit (PDK) which can be obtained at http://www.iviewstudio.com from the DevZone.

Unification
Unification helps to integrate the enterprise information sources and to provide unified access for its structured data. It is the engine at the back end which drives the union of databases, enterprise applications, and legacy systems in SAP Enterprise Portal. Through a web service, the Portal Framework helps in connecting the Unification Server, and the unifiers that runs over it.

The most important aspect of the Unification Server is the patented Drag & Relate technology. On top of existing data sources (applications and databases), you implement this technology. As such there are no changes needed to the IT infrastructure of your company. To implement this Drag & Relate technology, you make use of the development environment of the Unification Server which helps to create a Database Unifier project, that helps us in retrieving of structured data from the database. Other unifiers can also be installed on the Unification Server, in order to extend the development tools for handling of enterprise applications like SAP R/3, SAP BW, oracle Applications. The unifiers helpful for leveraging the target applications' own architecture, security mechanism, user interfaces and customizations.

At the front end, the user works from project’s Detailed Navigation Panel in the Portal, and queries data sources with the use of Drag & Relate which consists of user dragging the visual elements that represent data and dropping them on other elements, and also interrelating of the data for creating queries dynamically.

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