text: USE concurrency;
  
  INSERT INTO codes (`code`, `desc`) VALUES (1, 'start');
  INSERT INTO codes (`code`, `desc`) VALUES (2, 'acceptConsent');
  INSERT INTO codes (`code`, `desc`) VALUES (3, 'declineConsent');
  INSERT INTO codes (`code`, `desc`) VALUES (4, 'classificationEnd');
  INSERT INTO codes (`code`, `desc`) VALUES (5, 'sampleStart');
  INSERT INTO codes (`code`, `desc`) VALUES (6, 'codeStart');
  INSERT INTO codes (`code`, `desc`) VALUES (7, 'periodicCode');
  INSERT INTO codes (`code`, `desc`) VALUES (8, 'codeEnd');
  INSERT INTO codes (`code`, `desc`) VALUES (10, 'surveyEnd');
  INSERT INTO codes (`code`, `desc`) VALUES (11, 'end');