24. The system of claim 19 , wherein the operations further comprise: reading one or more values from at least one of a head block and a body block of a token being queried in the token database; and appending the one or more values to a result that is associated with execution of the execution tree.
19. The system of claim 7 , wherein the operations further comprise executing one or more nodes of the execution tree associated with querying one or more tokens in the token database.