Every IIQ enthusiast has one time or the other felt the need to understand the three correlation options IIQ provides. They might have come up with questions like - which to use? Which supersedes the other? Can all three types coexist? Can I have no correlations defined?
I have tried to break down the three types and tried to answer the questions in the attached document. Feel free to suggest changes. Few likes on the post will be much appreciated. 
