XML in Oracle 9i (best method to return a xml file from a table query)

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Hello.
What is the best method to query a table, or set of tables (that will return thousands of rows) using xml in oracle? (best performance)
I'm currently using DBMS_XMLGen, is there a better method ?
I think, if your talking about generating XML, that you should use XMLElement, XMLForest, etc. to create your XML.
Lets assume that you base is relational data, then maybe the following great example will give you an idea how to do it : Re: Generate XML Schema from oracle tables
As michaels pointed out (did you read the link/ URL given?), the general expectancy is that the packages will be less and less important. So also maintenance wise the XMLElement, etc way will be the best, also for the future, maintainable method.
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