When working with related data and odata you can you something like
http://local/get/Contact//?$expand=ContactType

Where Contact is the primary record and ContactType is n-1 to Contact also need to support 1-n

So the schema needs to be able to handle complex relations right now it is flatted out so I cant specifiy ContactType as a related entity with its own fields in the current schema implementation.

Unless the hierarchical datasource can handle this and bind to more than just the treeview widget, but I can't tell from the docs on the hierarchical datasource.  But really this is more for using this in the model definition such as kendo.data.Model.define({
Thanks,