Thanks for that info, that is on the same line as what I read before. When the relationship class is created and the geodata service is shared on our server along with the Map service, do I only have to load the REST url of the feature class that I want to be able to access both attribute data from?
For example:
The gdb has a line feature class, point feature class and relationship class for the line feature class to reference the point feature class attributes. When loading the REST url, I would normally load both line and point which would be www.somegisserver.com/mapservice/0 and www.somegisserver.com/mapservice/1 respectively (0 being line, and 1 being point). If I understand this correctly, I should only have to bring in the line feature (www.somegisserver.com/mapservice/0) and the relationship class will reference the point features attributes in the gdb when a line is selected in the webapp? Or does it not work like that for webapplications?