Create Xml string and update table column using stored proc

I have the following string stored in my database column called TreeXml.


<C filename="00013024228c4e24a79bae959588acd4" parents="9daf7c70ac37479b8f91ef7bd08e07e6" DateModified="1217355187" taxonomyId="6aa742c4edff43a798c9067a2a4e223c" typeId="514044723" typeName="Answer" title="No" description=""><Conclusion /><Ps><P name="Approved" value="true" /><P name="Global or Country" value="Global" /><P name="Display on Questionaire" value="EA" /><P name="SL/SSL Owner /Maintained" value="02" /><P name="Sort Key" value="125" /><P name="Unique Number" value="963478" /></Ps></C>


I need to update this string
to add a new attribute called "Modified" in the  <C ...so the new string sould be

<C filename="00013024228c4e24a79bae959588acd4" parents="9daf7c70ac37479b8f91ef7bd08e07e6" DateModified="1217355187" taxonomyId="6aa742c4edff43a798c9067a2a4e223c" typeId="514044723" typeName="Answer" title="No" description=""  Modified="xyz ">


i am getting this xyz value using this

Select top (1)  C.UserName as LastModifiedBy
      from      QMSDocuments D
                  join QMSTaxonomyNames T on D.TaxonomyID = T.TaxonomyID
                  join QMSChanges C on C.Rowid = D.Rowid
      where      DocumentID = '00013024228c4e24a79bae959588acd4' order by C.ChangeDate desc



How do i achieve all this  in a stored proc
angireddyAsked:
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BigRatConnect With a Mentor Commented:
Well the way to do this properly is to create an XML DOM and using the LoadXML() method to load the string you have read from the database into it.

You now need to select the "C" node like

    cNode = xmldom.selectSingleNode('/C');

and then create a new attribute node with

   attrNode = xmldom.CreateAttribute('Modified');

and then set it's value :-

    attrNode.Value = today();  // or whatever

now add the new attribute to the attribute of the C node

    cNode.attributes.setNamedItem(attrNode);

and then save the document into a string

    str = xmldom.xml

and then write the string back into the database.
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