I would argue that when you represent a graph as an Entity, Attribute, Value (just like a tuple in RDF) in the database as just those three columns, there are a

I would argue that when you represent a graph as an Entity, Attribute, Value (just like a tuple in RDF) in the database as just those three columns, there are a lot of opportunities for indexing. You're right though, a large full rendered graph is unwieldy by definition.