Thanks T.J. for the reply. It was really helpful.
While going the the SOAP API documentation (Eloqua® Web Services API v1.2 User Guide.pdf), under section "ENTITY - GLOBAL TYPES", there are few more object in SOAP implementation like
1. Base
2. DataCardSet
3. DataCard
4. ProcessedActivity
We are planning to use REST for our plugin development and I am wondering if we can find some equivalent of these SOAP objects in REST Let us know if you any suggestions on these Eloqua objects.