function Exists()
    {
        if ($this->KeyValue())
        {
            return $this->GetSchema()->Count(false, $this->KeyCondition()) > 0;
        }
        return false;
    }
function Exists()
    {
        if ($this->KeyValue())
        {
            return $this->GetSchema()->Count(false, $this->KeyCondition()) > 0;
        }
        return false;
    }
function Exists ( ) { if ( $ this -> KeyValue ( ) ) { return $ this -> GetSchema ( ) -> Count ( false , $ this -> KeyCondition ( ) ) > 0 ; } return false ; }
True if this record has a key value that exists in the database.
@return bool
True if this record has a key value that exists in the database .