This table provides a list of valid node types.
Source romber_node_types_tbl.sql
create table romber_network.node_types ( node_type_id romber_item.type_id not null );
Source romber_node_types_pk.sql
alter table romber_network.node_types add constraint romber_node_types_pk primary key ( node_type_id );
Source romber_node_types_fk1.sql
alter table romber_network.node_types add constraint romber_node_types_fk1 foreign key ( node_type_id ) references romber_meta.objects ( meta_object_id );
Source romber_node_types_load.sql
insert into romber_network.node_types ( node_type_id ) values ( 0 );