I don't think the entities/system are really that relational. Data is not denormalized in the same way and joins don't really exist. Indices are an after thou

I don't think the entities/system are really that relational. Data is not denormalized in the same way and joins don't really exist. Indices are an after thought. Full sequential scans are the main access pattern. But, it's easy to think of data for a component system as a table where each row is associated with an entity so I can see why you draw the similarity.