anchor.diff:    `study_id` varchar(128) NOT NULL DEFAULT '',
     `criterium` varchar(128) NOT NULL,
     PRIMARY KEY (`study_id`,`criterium`),
  -  CONSTRAINT `FK_STUDY_INCLUSION_CRITERIA_study_id` FOREIGN KEY (`study_id`) REFERENCES `STUDY_META` (`id`),
     CONSTRAINT `STUDY_INCLUSION_CRITERIA_ibfk_1` FOREIGN KEY (`study_id`) REFERENCES `STUDY_META` (`id`) ON DELETE CASCADE
   ) ENGINE=InnoDB DEFAULT CHARSET=latin1;
   /*!40101 SET character_set_client = @saved_cs_client */;
  
positive.code:   `description` varchar(2000) DEFAULT NULL,
    PRIMARY KEY (`studyname`),
    UNIQUE KEY `id` (`id`),
    CONSTRAINT `FK_STUDY_META_studyname` FOREIGN KEY (`studyname`) REFERENCES `study` (`name`),
    CONSTRAINT `STUDY_META_ibfk_1` FOREIGN KEY (`studyname`) REFERENCES `study` (`name`)
  ) ENGINE=InnoDB DEFAULT CHARSET=latin1;
  /*!40101 SET character_set_client = @saved_cs_client */;
  
  
negative.code:   `added_by` varchar(255) NOT NULL,
    `team_role` enum('Master','Researcher','Guest') NOT NULL,
    PRIMARY KEY (`studyname`,`username`),
    CONSTRAINT `FK_study_group_members_studyname` FOREIGN KEY (`studyname`) REFERENCES `study` (`name`)
  ) ENGINE=InnoDB DEFAULT CHARSET=latin1;
  /*!40101 SET character_set_client = @saved_cs_client */;
  
  