How to make Portal Application for connecting to SAP R/3(backend system)

Hello Experts,
I need to create a portal application that should connect to SAP R/3 & fetch some data in some table according to some input parameters provided at runtime & display the data in TABLEVIEW control.
Anyone can guide me on this i:e- how to go about it. What things i should know or should be aware of before creating this application. Any PDF documents , any help material, any guidance about the same will be of great help.
Thanks,
Chetan

Chetan,
Webdynpro & Visual Composer ars EP Development Tools.
If you only display BAPI data then go for Visual Composer with requires no coding So I suggest you to go for Visual Composer.
You can also use Webdynpro Java or ABAP to display BAPI data by creating
Adaptive RFC model.
You will integrate Webdynpro applications into EP by creating SAP Webdynpro iView.
*Visual Composer Documents:
http://help.sap.com/saphelp_nw2004s/helpdata/en/a0/0af7d34a8449e2b722878ce270a747/frameset.htm
*Webdynpro Documents:
http://help.sap.com/saphelp_erp2005/helpdata/en/a5/1a1e3e7181b60ae10000000a114084/frameset.htm
http://help.sap.com/saphelp_erp2005/helpdata/en/15/0d4f21c17c8044af4868130e9f
ea07/frameset.htm
Regards,
<b>Ramganesan K</b>

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