I understand EntityGroups allow you to use transaction management
across multple writes of different kinds. This is clear benefit but I
am trying to understand some more subtle benefits/costs of using
EntityGroups.
Question 1: When you define a chain of ownership between an entity and
child
Enrique,
Q1: The datastore stores members of the same entity group together. If
I correctly understand what you are asking, the entity group is defined by
the child entity itself. In other words book does not contain chapters,
but rather each chapter knows which book (if any) is its parent.
