4.1.10. Execution
BEGIN (not in order)
/* sql_statements */
UPDATE employee SET salary = salary+1;
/* conditionals */
IF (age < 0) THEN
age: = 0;
ELSE
age: = age + 1;
END IF;
/* transaction processing */
COMMIT; ROLLBACK;
/* loops */ /* cursors */
[END;] (if no exception handling)