You are right Pete. There's very little value in a graphic like this. I rarely look at these things. Years ago, I used Visio. But I really didn't use it to the max either.
There's too much to these technologies for me to understand. So I do what I can to build useful applications, knowing that I am just scratching the surface. I thank folks on AWF and those who were on UA for comments. My favorite way to learn is to study screenshots of forms and reports. I try to attend all the Access User Groups meetings that I can. I attended local meetings for about 15 years.