The input ports of the REST Web Service Consumer transformation contain relational data from upstream transformations in a mapping. The Data Integration Service uses the method input to convert data from the input ports to elements in the request message.

To connect to the web service, the Data Integration Service reads the base URL that you configure in the transformation properties or the HTTP connection. It identifies the resource that you want to get, post, put, or delete by appending values from the URL ports or argument ports to the base URL.

When the Data Integration Service receives a response, it passes the data in the response message to the output ports of the transformation. The Data Integration Service passes data based on how you configure the method output. The output ports contain relational data. The Data Integration Service sends the data in the output ports to downstream transformations in the mapping or to the target.