Root1      TBLA      KEY1      COLA      A    B    
Root1      TBLA      KEY1      COLB      D    E    
Root1      TBLA      KEY3      COLX      M    N     
Root2      TBLB      KEY4      COLX      M    N     
Root2      TBLB      KEY4      COLD      A    B   
Root3      TBLC      KEY5      COLD      A    B 

##</code><code>##

Root1      TBLA      KEY6    
Root2      TBLB      KEY7    
Root3      TBLC      KEY8 

##</code><code>##

Root1      TBLA      KEY9    
Root1      TBLA      KEY10    
Root3      TBLC      KEY11 

##</code><code>##

   <Data>    
    <Root1>
        <TBLA>    
            <NEW1>
                <KEY>KEY6</KEY>
            <NEW1>              
            <NEW2>
                <KEY>KEY9</KEY>
                <KEY>KEY10</KEY>
            <NEW2>              
            <MODIFIED>
                <KEY name =KEY1>
                    <COLA>
                        <oldvalue>A</oldvalue>
                        <newvalue>B</newvalue>    
                    </COLA> 
                    <COLB>    
                        <oldvalue>D</oldvalue>    
                        <newvalue>E</newvalue>     
                    </COLB>
                </KEY>
                <KEY name =KEY3>
                    <COLX>
                        <oldvalue>M</oldvalue>
                        <newvalue>N</newvalue>    
                    </COLX> 
                </KEY>
            </MODIFIED>     
        </TBLA>
    </Root1>        
    <Data>