Efficient ways to exchange xml data?

[parkms]

Could you tell me an efficient ways or examples to exchange xml data? There are many scenarios to use xml. However in my case, I submit data using html' form tag so that it should be inserted in a database. Then, the data should be made to xml format to be sent to another remote server. If the remote server gets xml data the server also should insert it on RDBMS. Of couse, Each xml elements should be mapped to rdb's columns. Do you have a good idea? Please...