Ontology-related configuration may be required for special cases that you won’t deal with in this example project. (See the section Cases That May Need Additional Setup in
TIBCO BusinessEvents Developer’s Guide for more details.) Ontology-related configuration is also required if you want to exclude any entity types from the backing store (or to include types that were earlier excluded). Cache preloading settings are not related to backing store setup, and can be configured and changed at any time.