This bottom-up evaluator will execute all join and match operations inside the storage system. It is currently the best evaluator for materializing very large ontologies with a database. However, it is also an efficient evaluator for the RAM storage systems. DBBottomUp works for all RAM models and for H2. In order to start OntoBroker with this evaluator set

BottomUpEvaluator=DBBottomUp

in OntoConfig.prp.

NOTE: You can run the evaluation methods with all storage systems.