You generate  a standard JDO persistence descriptor without any extension as follows:
        
            - 
                Select .
            
 
            - 
                Click on the Options tab.
            
 
            - 
                Set the "JDO provider" option to <Standard>
            
 
            - 
                Click Apply to save this option.
            
 
            - 
                Click Cancel to close the window.
            
 
        
        
            By default, PowerDesigner generates a single metadata.jdo file.