PowerDesigner supports web services for IBM DB2 v8.1 and over.
In IBM DB2, web services are defined by Document Access Definition Extension (DADX) files.
For more information about generating DADX files, see Generating web services for IBM DB2 v8.1.
A DADX file specifies a web service through a set of operations defined by SQL statements or Document Access Definition (DAD) files, which specify the mapping between XML elements and DB2 tables.
For more information on DAD files, see XML Modeling > Working with XML and Databases > Generating a DAD File for IBM DB2.