An Aggregate is when a new Smart Contract is created from a collection of other Smart Contracts and the originally Smart Contracts no longer exist as entities. For example, a can of soup is an aggregate of a can, tomatoes, salt, and other sices. Each of the original objects contained within a Smart Contract are not part of the can of soup.
CREATE AGGREGATE CanOfSoup FROM Tomatoes, Salt, Spice, Water, Onion, Butter, Oregano, Broth WHERE Tomatoes.id = '$1' AND Salt.id = '$2' AND Spice.id = '$3' AND Water.id = '$4' AND Onion.id = '$5' AND Butter.id = '$6' AND Oregano.id = '$7' AND Broth.id = '$8' RECORD {"Tomatoes", Tomatoes.id} AND {"Salt", Salt.id} AND {"Spice", Spice.id} AND {"Water", Water.id} AND {"Onion", Onion.id} AND {"Butter", Butter.id} AND {"Oregano", Oregano.id} AND {"Broth", Broth.id} AS parents, "Canning Factory Q, Assembly Line 1" AS process;