ALTER TABLE files ADD CONSTRAINT files_location FOREIGN KEY (location) REFERENCES location(id) MATCH FULL;
ALTER TABLE source ADD CONSTRAINT source_maintainer FOREIGN KEY (maintainer) REFERENCES maintainer(id) MATCH FULL;
+ALTER TABLE source ADD CONSTRAINT source_changedby FOREIGN KEY (changedby) REFERENCES maintainer(id) MATCH FULL;
ALTER TABLE source ADD CONSTRAINT source_file FOREIGN KEY (file) REFERENCES files(id) MATCH FULL;
ALTER TABLE source ADD CONSTRAINT source_sig_fpr FOREIGN KEY (sig_fpr) REFERENCES fingerprint(id) MATCH FULL;