Re: XML+XSL= XML only?

OK, here goes the big pool of characters...
We would like to build a service on our messaging infrastructure that would
apply XSL to XML to produce:
1) HTML (for the browser client)
2) XML (transformed messages to the middleware publishers/subscribers)
3) SQL (to RDBMS)
4) Cobol Copy book formats...(to the mainframe legacy apps)
Our middleware infrastructure running on UNIX, NT and MVS provides an
efficient (request/reply and publish/subscribe) message transport. We would
like to build a message transformation service that would give the
applications the data they want by applying XSL to XML, as real-time data
flows (let's assume XML messages) thro' the middleware infrastructure. 
Yesterday, the XML/XSL course instructor 'kind of" indicated XML+XSL was
'intended' to produce XML only. I just wanted to know the views of the
'learned' ones in this community. Thus, XML+ XSL= XML only?
Regards
Balu Nadig
PS: 1) I have some understanding of XML and XSL technologies. Hence the
reference to 'learned ones...' 
2) Just wanted to apologize for the typos. Hence last line. 
3) I was in a hurry. Hence the cryptic XML+XSL=XML only equation.


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