add_database_info       add_database_info Assign passed databases db
                        metadata to passed dvobject
cett_nodes_options      returns carriers, enzymes,targets and
                        transporters node valid options.
drug_node_options       returns drug node valid options.
merge_drugbank_onsides
                        Merge DrugBank and OnSIDES Database Objects
merge_drugbank_twosides
                        Merge a DrugBank dvobject with a TWOSIDES
                        dvobject
parseDrugBank           parseDrugBank
parseOnSIDES            Parse the OnSIDES Core Relational Database
parseTWOSIDES           Parse the TWOSIDES Drug-Drug Interaction
                        Database
references_node_options
                        returns references node valid options.
show_dvobject_metadata
                        Display dvobject Metadata
subset_drugbank_dvobject
                        Subset a DrugBank dvobject by a vector of
                        DrugBank IDs
subset_onsides_dvobject
                        Subset an OnSIDES dvobject by a vector of
                        RxNorm Ingredient IDs (Schema-Aware)
