Using Xpath on relational data.

[William Wild]

Hi all,
I have a small problem trying to access relational data to get xml output. The database I want to run searches on using will be a relational set up, but my bosses are requiring that all data access (from my point in the project) is done using xquery. I have a copy of oracles xquery.jar, and have had some success with it when I use it directly on xml data. But I am now trying to find a solution to present the xquery.jar with xml created from relational data.
Does any one know of any products out there that could do this sort of thing? Or is it going tot be a case of writing some sql/xsql/sqlx queries to extract it?
Cheers
Bill