Hi, my name is Michael. I'm a new Enterprise Architect for my organization and I'm trying to find some getting started links to understand the underlying data structure of our GIS database. We are using 10.1 I believe and are trying to upgrade. Specifically, I would like to understand what part of the GIS database is ESRI and what part is our data and what is the recommended method to not tightly couple our data to a specific ESRI DB release instance. Does that make sense?