Models/DBOperator.php
public function createDB($DBName, $charset = 'utf8', $collation = 'utf8_unicode_ci') {
        QC::executeSQL($this->generateDBSQL($DBName, $charset, $collation));
        return $this;
    }
public function createDB($DBName, $charset = 'utf8', $collation = 'utf8_unicode_ci') {
        QC::executeSQL($this->generateDBSQL($DBName, $charset, $collation));
        return $this;
    }
Using for creating database
@param string $DBName
@param string $charset
@param string $collation
@return $this