> whats the difference between sap xi and sap xi/pi

XI 3.0 runs on WAS 6.40 and is a part of Netweaver 2004.

PI 7.0 runs on WAS 7.0 and is a part if Netweaevr 2004s.

There is technically no difference between XI and PI. All features in PI are supported in XI. when Nw2004s was aunched XI was renamed as PI.

> difference between client and server proxy and can we

> call them from XI

Client proxy is when the proxy initiates the call to XI. You create the proxy for an Outbound Interface in Client Proxy.

Server proxy is when the XI calls the proxy. Inbound Interfaces lead to Server proxies.

The Proxies should be triggered / called on a different client other than the integration server.

> DOM and SAX mapping advantages?

DOM is easy to use. DOM loads entire XML into memory and so can lead to performance overheads for huge XML.

SAX is a bit complex but provides better perfromance.

> steps to use java mpping & abap mapping. you make it

> make it simple to understand?

Java Mapping start with these blogs,

/people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-i

/people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-ii

/people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-iii

Regards

Bhavesh