This illustration shows the J2EE Connector architecture. There is a large gray box in the left containing two smaller boxes: one labeled "OC4J" and the other labeled "Resource Adaptor". The "OC4J" box contains another smaller box labeled "J2EE Application Component". There is a straight line connecting the "J2EE Application Component" box to the "Resource Adaptor" box,labeled "Application Control (Client API: CGI, specific)". There is another straight line connecting the "OC4J" box to the "Resource Adpator" box, labeled "System Contracts (Quality of Service)".

There is another straight line from the "Resource Adaptor" box to a network cloud residing outside the large gray box; in turn, another straight line on the other side of the network cloud connects it with a box labeled "Enterprise Information Systems".