public function getDsn(): string
  {
    // pgsql:host=<hostname>;port=26257;dbname=bank;sslmode=disable

    # Build the DSN
    $_dsn = $this->getDriver().':' . 
            'host=' . $this->GetHost().';' . 
            'port=' . ($this->GetPort()!=0 ? $this->GetPort() . ':' : '26257' ) .
            'dbname=' . $this->GetSchema().';' .
            'sslmode=' . $this->getSSLMode();
            // 'charset='.$this->GetCharset();
    # Set it
    $this->setDsn($_dsn);
    # Results
    return $this->pdo_dsn;
  }