The long IDs generated for children are unique within that Entity Group, but can be identical across Entity Groups. This is possible because the *key* of the child contains the identifier of the parent - i.e. the entire key is unique within the datastore.
In short, the examples you have given can definitely occur. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
