Indexing

[anushri kumar]

Hi,
 
I've 4 fields in a document ie. id, URL, modified date, contents. id is unique 
for each document. I wanted to know if I index a document with the same id 
again , will the previous document (in the index) be overwritten or do I have 
to delete the index for that document first and then re index the modified one. 
 
Thanks,
Anu 

                
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