QatNode

TypeNode
- rowType
- alias

EntityNode : TypeNode
- entity
- filter

RootNode : TypeNode
- source

AssociationNode : EntityNode
- assoc

ElementNode

EntityRootNode : EntityNode + Root Node

SelectRootNode : TypeNode + RootNode - OK


QAT - OK
	Type - OK
		Entity 
			Assoc - OK
			EntityRoot + Root
		SelectRoot + Root - OK
	Element - OK


