function supportedPlatform( $platform = NULL ) {
		return is_object( $this->parent ) ? $this->parent->supportedPlatform( $platform ) : TRUE;
	}
function supportedPlatform( $platform = NULL ) {
		return is_object( $this->parent ) ? $this->parent->supportedPlatform( $platform ) : TRUE;
	}
function supportedPlatform ( $ platform = NULL ) { return is_object ( $ this -> parent ) ? $ this -> parent -> supportedPlatform ( $ platform ) : TRUE ; }
Checks whether the specified RDBMS is supported by the current
database object or its ranking ancestor.

@param string $platform RDBMS platform name (from ADODB platform list).
@return boolean TRUE if RDBMS is supported; otherwise returns FALSE.
Checks whether the specified RDBMS is supported by the current database object or its ranking ancestor .