The Web Services Hub Service is an application service in the Informatica domain that exposes PowerCenter functionality to external clients through web services.
The Web Services Hub Service receives requests from web service clients and passes them to the PowerCenter Repository Service. The PowerCenter Repository Service processes the requests and sends a response to the Web Services Hub. The Web Services Hub sends the response back to the web service client.
When you create the Web Services Hub Service, you do not associate it with any relational databases.