You need to implement full audit logging for all DML on the orders table in PostgreSQL. How?

Trigger-based audit: CREATE TABLE orders_audit (audit_id BIGSERIAL, operation CHAR(1), changed_by TEXT, changed_at TIMESTAMP, old_data JSONB, new_data JSONB); CREATE OR REPLACE FUNCTION log_orders_audit() RETURNS TRIGGER AS [func_body] CREATE TRIGGER orders_audit_trigger AFTER INSERT OR UPDATE OR DELETE ON orders FOR EACH ROW EXECUTE FUNCTION log_orders_audit(). In trigger body: operation = TG_OP[