In Chapter 10, we introduced the generic-entity cloud (GEC) and discussed its internal regulatory capabilities. In Sections 10.3 and 10.6, we indicated that the GEC approach also provided for regulation of the relationships between GECs via data structures called “externals.” This chapter looks at specific examples to see how the combination of GECs and externals provides business staff with control over the characteristics of entities and the relationships between them. In the initial example we look at financial transactions involving tuition charges and payments at a university.