You can use the REST web service link to manage data in OneData objects. You can access the data either as an anonymous user or as a OneData user. When REST fetches the data from an object, it checks for the user privileges and displays the data accordingly. OneData returns the records in XML/JSON format. For conceptual objects, OneData returns the child records too.

You can also filter the data returned by REST by providing appropriate filter conditions in the request URL.