DATAMODEL

The Data Model describes how the data is stored

We try to follow some simple principles.
	- Never Duplicate Data
	- Never Duplicate Data
	
	
Each Notification is stored.

	Next to each subscription notification an index entry is added, 
		one is a list of all the owners of the data.
		another is a list of all the people the entry is aimed for.
	Each notification has a parent that is a subscription ( this might need to be changed to a reference property.)
		
SubscriptionOwners - 
	A subscription has many owners (users), this is used by queries that need
	
SubscriptionReaders -
	A subscription can have many subscribers (people who read the subscription), when an notification is added we attach a list of the people who are to read this.