XML data validation

[tHw]

Hello,

Is there any dedicated languege for validating data in XML documents,
against data in database?
I mean: I will generate XML schema (for example with XML SQL Utility
from Oracle XDK) to map database relations to XML. Then, when I get new
data in such a schema I would like to validate it with data in
databases (for ex. if they match).
Is there a dedicated solution (language) for such a procedure?

regards