changing XML values

If I use the REPLACE feature to change only a part of the XML document, does this require the whole document be reinserted and/or parsed, or just that bit of the XML that I changed? Since its shredded out from the XML, it seems to me that I should be fine and not take this performance hit. Just trying to figure out the performance impact of our application updating the XML that already exists. Thanks.The chunk of the document that you are going to insert into the existing document will need to be reparsed, but the existing document will not need to be reparsed since it is in the shredded form, it will just have the section replaced.

changing XML values

If I use the REPLACE feature to change only a part of the XML document, does this require the whole document be reinserted and/or parsed, or just that bit of the XML that I changed? Since its shredded out from the XML, it seems to me that I should be fine and not take this performance hit. Just trying to figure out the performance impact of our application updating the XML that already exists. Thanks.The chunk of the document that you are going to insert into the existing document will need to be reparsed, but the existing document will not need to be reparsed since it is in the shredded form, it will just have the section replaced.