CREATE TABLE stylesheets
 (name VARCHAR2(100),
  stylesheet XMLTYPE);

INSERT INTO stylesheets VALUES('mondial-simple.xsl',
 system.getxml(
  'http://www.dbis.informatik.uni-goettingen.de' ||
   '/Teaching/DBP/XML/mondial-simple.xsl'));

SELECT value(m).transform(s.stylesheet)
FROM mondial m, stylesheets s
WHERE s.name = 'mondial-simple.xsl';

SELECT XMLTransform(value(m),s.stylesheet)
FROM mondial m, stylesheets s
WHERE s.name = 'mondial-simple.xsl';
