def edge_del_record(header, content, source, target): record = get_record("Source", source, get_records("Target", target, content)) content.remove(record)
def edge_upd_record(nheader, ncontent, eheader, econtent, record): existing = get_record("Source", record["Source"], get_records("Target", record["Target"], econtent)) econtent.remove(existing) edge_add_record(nheader, ncontent, eheader, econtent, record)