In IBM DB2, web services are defined by Document Access Definition Extension (DADX) files.
A PDM with the appropriate extended model definition allows you to generate a DADX file for each web service defined for IBM DB2.
You can attach the DADX extended model definition at model creation. In the New dialog box, once you have selected Physical Data Model in the Model type list, and IBM DB2 UDB 8.x Common Server in the DBMS list, click the Extended Model Definitions tab and select DADX.