Urgently!! Is this possible?

Hi,
I had read xml specification long back and couldnot
get oppurtunity to work with this that time,Now I want
to create an xml file which will replace one of the table
in database, and using an java I should be able to
view ,insert ,delete and update from the xml file.
one of my friend had earlier had worked on this
and was unable to update the contents to xml file.
According to me it should be possible and I would
like to get the feed back from those who had already
worked with the same logic,if possible please send
the sample code so that I can verify it.
I require the solution urgently as my work is held
because of this.
regards vicky

forgot to mention
I read in FAQ's and quote:-
"Why should I use a native XML Database instead of a relational database?
Three reasons: Superior Performance, Reduced Development Efforts and Greater Flexibility.
Relational databases are structured with a rigid columns and rows model, which is poorly adapted to represent the variety and the richness of the relationships found in the structure of XML documents. Using relational databases for storing and retrieving XML documents involves complex and time-consuming bi-directional transformations. They deconstruct XML documents and store their elements in tables resulting in database inefficiencies. In order to "shoehorn" the XML content into tables, one must programmatically map the data, and in many cases re-program this process, in the event that the content, or the application that it supports, changes. Conversely, creating tables that indiscriminately seize all information contained in XML documents creates volumes of empty results spaces, which in turn produce database inefficiencies.
Native XML databases store XML documents in their original format, which eliminates the mapping processes and gives rise to superior performance. The structure of native XML databases will evolve to reflect changes in the structure of the XML content, or changes to the applications they support without exhaustive re-programming."

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