Is there any thing to Compare PDK and Web Dynpro

Is there any thing to Compare Enterprise Portal PDK and Web Dynpro .
please inform me what is the role of PDK and Web Dynpro in a project.
i am just confused by the terms

Hi Krishna,
The PDK (Portal Development Kit) is especially made to produce portal content based on jsp using the htmlb library. With the combination of JSP and tag libraries, you can even separate the presentation from the logic. However, the use of HTML tags, JSP tags and Scriptlet code demand great discipline when you develop Web applications, as otherwise the advantages of separating the presentation from the logic quickly disappear.
Web Dynpro applications are able to run in a portal also, you can make use of features like portal eventing also (two Web Dynpro based iViews can communicate with eachother as well as two iViews built with PDK). Using the Web Dynpro Client for Java (a beta-version will be available soon) you could use the same application within a SAPGui-like environment also. The new development environment for professional User Interfaces follows the model view controller paradigm and goes a few steps further in UI programming, e.g.:
- Screen management and screen flow
- Automatic data transport
- Re-usability of Web Dynpro components
- Session management
- Internationalization
- etc.
Both development tools are available with the SAP NetWeaver Developer Studio.
Hope that helps.
Best regards,
Karin

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