How can I access to the data?

Hi,
I am newbie in WebDynpro.
The WebDynpro is deployed in WAS. The WAS, I think, can be installed together to a R/3 or not. Is it correct?
How do I access to data in my web dynpro? RFCs? SELECTS? Web Services?
Regards,

hi......
Well it is not necessary ti install WAS always with your NWDS, NWDS can be installed separately and then the projects created in NWDS can be deployed in one WAS as long as you know the SDM password of that WAS. This i guess answers your first question. TO deploy your webdynpro project in one was, open the NWDS,
Window>preferences>SAP J2EE engine
There you can enter the name of the WAS. IF it Local Server, Select "SAP J2EE engine is stored on local host". For more information right back.
Now to connct to backend from Webdynpro,
You have use "ADAPTIVE RFC's" or BAPI. But before that the JCO(java connectors have to be configured).
Follow the link below, for Adaptive rfc, it is a pdf which gives everything in detail
[https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/user-interface-technology/webdynpro/wd%20java/wdjava%20archive/creating%20a%20web%20dynpro%20application%20accessing%20abap%20functions.pdf]
Foe webservice,
[https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/301ff0bb-74ca-2910-fa99-eae392695aad]
For further queries, write back

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