A simple CRM with DTP4?

Has anyone made a simple CRM with DTP4? There’ve been earlier discussions about DTP3 and earlier as a base for a CRM, but perhaps something’s changed in 4.

I’m starting with Linkedin lists of connections, messages, and invitations. I want to link them automatically with matching fields and to sort them in various simple ways.

So, my question: Has anyone done this or even tried it in DTP4?