sql to xml and replace value in database

Question

i am trying to extract a specific field from table and save it as xml file

 

id | description       | qty

1 | userdescripting | 20

2 | userdescripting | 10

 

after saving the file i would like to point to it in my sql table to look like this  

 

 

id | description | qty

1 | file1.xml | 20

2 | fil2.xml| 10

 

not sure if i should use webform or windowsform 

any tutotial would be great. 

thanks in advance