DROP TABLE plant_relationships; DROP TYPE relationship_kind; ALTER TABLE plants DROP COLUMN family_id, DROP COLUMN subfamily_id, DROP COLUMN genus_id, DROP COLUMN species_id; DROP TYPE taxonomic_rank;
DROP TABLE plant_relationships; DROP TYPE relationship_kind; ALTER TABLE plants DROP COLUMN family_id, DROP COLUMN subfamily_id, DROP COLUMN genus_id, DROP COLUMN species_id; DROP TYPE taxonomic_rank;