public static function getPrimaryColumns()
    {
        return [
            MonitoringStorage::COLUMN_DELIVERY_EXECUTION_ID,
            MonitoringStorage::COLUMN_STATUS,
            MonitoringStorage::COLUMN_CURRENT_ASSESSMENT_ITEM,
            MonitoringStorage::COLUMN_TEST_TAKER,
            MonitoringStorage::COLUMN_AUTHORIZED_BY,
            MonitoringStorage::COLUMN_START_TIME,
            MonitoringStorage::COLUMN_END_TIME,
            MonitoringStorage::DELIVERY_ID,
            MonitoringStorage::DELIVERY_NAME,
        ];
    }
public static function getPrimaryColumns()
    {
        return [
            MonitoringStorage::COLUMN_DELIVERY_EXECUTION_ID,
            MonitoringStorage::COLUMN_STATUS,
            MonitoringStorage::COLUMN_CURRENT_ASSESSMENT_ITEM,
            MonitoringStorage::COLUMN_TEST_TAKER,
            MonitoringStorage::COLUMN_AUTHORIZED_BY,
            MonitoringStorage::COLUMN_START_TIME,
            MonitoringStorage::COLUMN_END_TIME,
            MonitoringStorage::DELIVERY_ID,
            MonitoringStorage::DELIVERY_NAME,
        ];
    }
public static function getPrimaryColumns ( ) { return [ MonitoringStorage :: COLUMN_DELIVERY_EXECUTION_ID , MonitoringStorage :: COLUMN_STATUS , MonitoringStorage :: COLUMN_CURRENT_ASSESSMENT_ITEM , MonitoringStorage :: COLUMN_TEST_TAKER , MonitoringStorage :: COLUMN_AUTHORIZED_BY , MonitoringStorage :: COLUMN_START_TIME , MonitoringStorage :: COLUMN_END_TIME , MonitoringStorage :: DELIVERY_ID , MonitoringStorage :: DELIVERY_NAME , ] ; }
Returns a list of columns stored in the primary table

@return array column identifiers
Returns a list of columns stored in the primary table