urm...thanks..
my job is about to write a transformation tool to transform XML documents into a database. The tools is written for users to extract data in XML format and store it into a database. But i would choose MYSQL. Mapping files are used to store information correctly into database to avoid the need to write new code for each type of XML files. And can choose any programing langugage for implementation such as Java and C#.........and currently still looking on Java or VB