ALTER TABLE trna_method ADD FOREIGN KEY (id) REFERENCES trna(id) ON DELETE CASCADE;
ALTER TABLE trna_names ADD FOREIGN KEY (id) REFERENCES trna(id) ON DELETE CASCADE;
ALTER TABLE trna_product ADD FOREIGN KEY (id) REFERENCES trna(id) ON DELETE CASCADE;
ALTER TABLE trna_systematic_id ADD FOREIGN KEY (id) REFERENCES trna(id) ON DELETE CASCADE;
ALTER TABLE trna_temporary_systematic_id ADD FOREIGN KEY (id) REFERENCES trna(id) ON DELETE CASCADE;
ALTER TABLE trna_xrefs ADD FOREIGN KEY (id) REFERENCES trna(id) ON DELETE CASCADE;
